JP4479205B2 - Printing device capable of printing an image on a multi-page cut sheet - Google Patents

Description

  The present invention relates to a technique for printing an image on a multi-page cut sheet composed of a plurality of serially connected pages.

  2. Description of the Related Art Conventionally, a printing apparatus that prints an image on continuous paper composed of a plurality of linked pages is known (for example, Patent Document 1). According to this technique, continuous paper is provided with a perforation at the boundary line between pages, and a mark is provided at one end of each perforation, and the printing apparatus reads the mark with an optical sensor, Control is made so that the perforation position matches the transfer start position.

JP 05-104811 A

  However, in the prior art, the mark is provided only at one end of the boundary line. For this reason, it is not always possible to perform printing alignment with high accuracy.

  Moreover, although the above-described conventional printing apparatus is used exclusively for printing continuous paper, it may be preferable to use not only multi-page cut sheets but also other types of sheets. In that case, what kind of operation is performed becomes a problem.

  Accordingly, an object of the present invention is to enable accurate printing alignment in a printing apparatus capable of printing an image on a multi-page cut sheet.

  Another object of the present invention is to provide a printing apparatus capable of printing an image by selectively using a multi-page cut sheet and another type of sheet and performing a suitable operation.

  Other objects of the present invention will become clear from the following description.

  A printing apparatus according to a first aspect of the present invention (hereinafter referred to as a first printing apparatus) is a printing apparatus capable of printing an image on a multi-page cut sheet composed of a plurality of serially connected pages. A print head for printing an image on a page cut sheet, a position of a first boundary mark provided at one end of a page-to-page boundary line of the multi-page cut sheet, and a second provided at the other end of the boundary line Boundary mark detecting means for detecting the position of the boundary mark, boundary position grasping means for grasping the boundary position between the page based on the position detection result of the first boundary mark and the second boundary mark, and the grasping A print position control method for controlling a relative print position between the print head and the multi-page cut sheet at the start of image printing based on the boundary position. With steps.

  In a first preferred embodiment of the first printing apparatus, the first boundary mark and the second boundary mark are a first stripe having a certain length in a direction perpendicular to the boundary line with the boundary line as a center. It is a second stripe, and the boundary mark detecting means is at the first end and the second end at both ends of the first stripe in the length direction, and at both ends of the second stripe on the downstream side in the length direction. A third end and a fourth end can be detected, and the boundary position grasping unit is configured to detect the boundary based on a method determined according to the detection state of the four ends by the boundary mark position detecting unit. Know the location.

In a second preferred embodiment of the first printing apparatus, the boundary position grasping means includes the following processes (1) to (4):
(1) When four positions from the first end to the fourth end are detected, the boundary position is grasped based on the detected four positions.
(2) Although the four positions were not detected, the first end and the second end, the first end and the fourth end, the second end and the third end, or the third end When the two positions of the fourth end are detected, the boundary position is grasped based on the two detected positions.
(3) Although the four positions are not detected, the two detected positions are detected when two positions of the first end and the third end or the second end and the fourth end are detected. Grasping the boundary position based on one position and the length of the stripe;
(4) When only one position of the first end to the fourth end is detected, the boundary position is grasped based on the detected one position and the length of the stripe.
At least one of the processes is executed. The stripe is, for example, a mark or notch printed on a multi-page cut sheet.

  In a third preferred embodiment of the first printing apparatus, the first printing apparatus further comprises an end position detecting means for detecting a print end position and a storage means for storing the print end position, and the print position control The means stores the print end position in the storage means, and then detects the positions of the first boundary mark and the second boundary mark to detect the print start position of the next page. As a result, the boundary mark is detected. If not, the stored print end position is set as the print start position of the next page.

  The printing apparatus according to the second aspect of the present invention (hereinafter referred to as the second printing apparatus) is a sheet of a different type from a multi-page cut sheet having a plurality of serially connected pages and provided with a unique mark as a print medium. Is a printing apparatus capable of printing an image by selectively using a medium, a medium taking-in means for taking in and conveying a print medium, a mark detecting means for detecting the specific mark, and the taken-in printing When the specific mark is detected from the medium, the print control for the multi-page cut sheet is performed. When the specific mark is not detected from the print medium, the print control for the different type of sheet is performed. Printing control means.

  In a preferred first embodiment of the second printing apparatus, the multi-page cut sheet has the width of the multi-page cut sheet at a predetermined position in the transport direction of the multi-page cut sheet as the specific mark. The other type of sheet does not have a notch at a predetermined position in the transport direction, and the printing control means includes the printing medium in the taken-in print medium. The width of the predetermined position in the transport direction is compared with the width at another position, and the notch is detected based on the result of the comparison (specifically, for example, the predetermined width in the transport direction) The notch is detected when the width of the position is shorter than the width at other positions). Specifically, for example, the mark detection unit is provided in a recording head that travels in a main scanning direction orthogonal to the transport direction, and the printing control unit includes the recording head traveling and the captured printing. By controlling the conveyance of the medium, the width of the print medium in the conveyance direction at a predetermined position and the width at the other position are detected and compared, and the notch is detected based on the result of the comparison It is like that.

  In a second preferred embodiment of the second printing apparatus, the second printing apparatus includes a recording head arranged on the conveyance path of the print medium, and a discharge roller arranged on the downstream side in the conveyance direction of the print head. Further, the another type of sheet is a long sheet that does not include the specific mark, and the print control unit is configured to control a front end of the multi-page cut sheet when performing print control for the multi-page cut sheet. When printing is started after transporting to the recording position of the recording head and printing control for the long sheet is performed, a position where the leading end of the long sheet is sandwiched between the discharge rollers (for example, a platen and a discharge roller) The printing is started after the sheet is conveyed to a position between the two sheets.

  A printing apparatus according to a third aspect of the present invention (hereinafter, third printing apparatus) is a printing apparatus capable of printing an image on a multi-page cut sheet composed of a plurality of serially connected pages. Nipping means for niping the finished multi-page cut sheet so as not to drop from the printing apparatus, discharge request receiving means for receiving a sheet discharge request from a user, and sheet discharge after printing of the multi-page cut sheet is completed And a sheet discharge means for discharging the multi-page cut sheet by causing the nip means to release the multi-page cut sheet when receiving a request.

  In a first preferred embodiment of the third printing apparatus, a nipple portion that protrudes from a page for printing an image is provided at a rear end of the multi-page cut sheet, and the nip means includes the multi-page. Nip the nipple portion of the cut sheet.

  In a second preferred embodiment of the third printing apparatus, the third printing apparatus further comprises cancel request receiving means for receiving a print cancel request from the user, and the sheet discharging means is for printing the multi-page cut sheet. If the cancel request is received before the process is completed, the multi-page cut sheet is discharged without causing the nip means to nip the multi-page cut sheet.

  A printing apparatus according to a fourth aspect of the present invention (hereinafter referred to as a fourth printing apparatus) is a printing apparatus capable of printing an image on a multi-page cut sheet composed of a plurality of serially connected pages. The page cut sheet has a plurality of page-to-page boundary lines, and the mountain-folding boundary line that is scheduled to be folded and the valley-folding boundary line that is scheduled to be folded are alternately arranged Print data acquisition means for acquiring print data, page determination means for determining whether the target page to be printed is downstream of the valley folding boundary in the sheet conveying direction, and the target page When it is determined that the boundary line for mountain folding is downstream of the sheet conveyance direction, an image based on the acquired print data is spread over two pages, the target page and the next page. And a printing means for printing.

  In a first preferred embodiment of the fourth printing apparatus, when the printing unit determines that the target page is downstream of the mountain fold boundary line in the sheet conveying direction, the data size of the print data is If it is equal to or larger than a predetermined data size, an image based on the acquired print data is printed over the two pages of the target page and the next page, and the data size of the print data is smaller than the predetermined data size. For example, an image based on the acquired print data is printed only on the target page.

  In a second preferred embodiment of the fourth printing apparatus, a predetermined mark is provided on the mountain fold boundary line, and the fourth printing apparatus further comprises mark detection means for detecting the predetermined mark, The page discriminating unit discriminates that the target page is a page on the downstream side of the mountain fold boundary line when the mark detection unit detects the predetermined mark.

  A printing apparatus according to a fifth aspect of the present invention (hereinafter referred to as fifth printing apparatus) is a printing apparatus capable of printing an image on a multi-page cut sheet composed of a plurality of serially connected pages. The page cut sheet has a plurality of page-to-page boundary lines, and the mountain-folding boundary line that is scheduled to be folded and the valley-folding boundary line that is scheduled to be folded are alternately arranged And a page for determining whether the print data acquisition means for acquiring print data and the target page to be printed are located on the downstream side in the sheet conveying direction of the boundary line for the valley fold or the mountain fold When it is determined that the determination unit and the target page are downstream of the mountain folding boundary line in the sheet conveyance direction, an image based on the acquired print data is displayed on the target page. And and a printing means for printing over two pages of the next page.

  According to the first printing apparatus, the position of the first boundary mark provided at one end of the boundary between the page and the page of the multi-page cut sheet, and the position of the second boundary mark provided at the other end of the boundary line. Based on the detection result of the position of the two boundary marks, the boundary position between the pages is grasped and the printing position is controlled. Thereby, it is possible to perform printing alignment with higher accuracy than in the past.

  According to the second printing apparatus, it is determined whether a multi-page cut sheet or another type of sheet is detected depending on whether or not a specific mark that should be provided on the multi-page cut sheet is detected, and print control according to the determination result. Is done. Thus, an operation suitable for printing an image on a multi-page cut sheet is performed, and an operation suitable for printing an image on another type of sheet is performed.

  According to the third printing apparatus, after printing of the multi-page cut sheet is completed, when a sheet discharge request is received from the user, the nipped multi-page cut sheet is released and the multi-page cut sheet is discharged. The This prevents the image on the page where the colorant has not dried from getting dirty due to the fall of the multi-page cut sheet on which the image has been printed. The page cut sheet can be detached from the printing apparatus.

  According to the fourth printing apparatus, when printing a multi-page cut sheet, when the target page is on the downstream side of the mountain folding boundary line in the sheet conveyance direction (in other words, the target page is upstream of the valley folding boundary line in the sheet conveyance direction). The image is printed over the target page and the next page. Thus, one image is printed on the two spread pages across the two pages.

  According to the fifth printing apparatus, when printing a multi-page cut sheet having a mountain fold boundary line and a valley fold boundary line, printing is started only when the target page is on the downstream side in the conveyance direction of the mountain fold boundary line. The position is controlled. This enables high-speed printing compared to the case where the print start position is controlled for each page, and even if the print start position is shifted at the valley fold, the shift is within an area that can be viewed in a spread. It is easier for the user to see than when the mountain folds are shifted.

  Hereinafter, first to fourth examples in one embodiment of the present invention will be described.

  FIG. 1 is a schematic perspective view of the printing apparatus according to the first embodiment of the present invention when viewed obliquely from the rear. FIG. 2 is a sectional view of the printing apparatus.

  The printing apparatus 100 is an ink jet printer that prints an image on a print medium P (recording material) by an ink jet method, and includes a carriage 10 that is supported by a carriage guide shaft 12 so as to be reciprocable in the main scanning direction X. The carriage 10 includes a print head 13 that ejects ink onto the print medium P, and an ink cartridge 11 that is filled with ink.

  A platen 28 that defines the gap between the head surface of the print head 13 and the print medium P is provided below the print head 13 so as to face the print head 13. In the printing apparatus 100, the print medium P is transported between the carriage 10 and the platen 28 by a predetermined transport amount in the sub-scanning direction Y orthogonal to the main scanning direction X, and the print head 13 is moved in the main scanning direction X. An image is printed on the print medium P by alternately repeating the operation of ejecting ink from the print head 13 to the print medium P during the reciprocation.

  Examples of the print medium P that can be used in the printing apparatus 100 include a single page cut sheet (for example, a sheet of a predetermined standard size such as A4) S, a roll print medium R on which a long print medium P is wound, There is a multi-page cut sheet Z composed of a plurality of pages connected serially.

  The single page cut sheet S is supplied from the supply tray 5 to the inside of the apparatus main body 3. The supply tray 5 is provided with an edge guide 15 that is in contact with the side end surface of the single page cut sheet S and enables smooth conveyance in the sub-scanning direction Y. The single page cut sheet S on the supply tray 5 is separated by a hopper 16 that is raised at a predetermined timing and pushed up toward the supply roller 14 as the rotation shaft 17 of the supply roller 14 rotates. The unit is picked up by the number of units with the help of a pad or a retard roller, and is fed into the apparatus main body 3 along the direction of conveyance of the print medium P (note that the apparatus including these supply tray 5, supply roller 14, and hopper 16) Is called a feeding device 2).

  A print media detection unit (not shown) such as an optical sensor that detects the passage of the single page cut sheet S is provided downstream of the supply roller 14, and a drive roller 19 a for conveyance and a driven roller for conveyance are provided downstream thereof. The conveyance roller 19 comprised by 19b is provided. Among these, the conveyance driven roller 19b is pivotally supported on the downstream side of the roller holder 18 for the conveyance driven roller, and the roller holder 18 is provided so as to be rotatable about a rotation shaft (not shown). The driven follower roller 19b is urged to rotate so as to be in a nip state in which the driven roller 19b is always in pressure contact with the driving roller 19a.

  Single page cut sheet S or the like conveyed in a state of being pinched by the conveyance roller 19 (the roll printing medium R and the multi-page cut sheet Z follow the same conveyance path after the nip point of the conveyance roller 19 and so on. Is also guided to the recording unit 26 below the print head 13, and is desired over almost the entire recording surface of the single page cut sheet S or the like by the operation of the carriage 10 and the single page cut sheet S described above. Is recorded. The gap between the print head 13 and the platen 28 provided opposite to the print head 13 is an extremely important element in executing high-precision recording, and the thickness of the single page cut sheet S or the like is large. It is adjusted appropriately according to the change.

  Disposed downstream of the print head 13 is a discharge roller 20 composed of a discharge drive roller 20a and a discharge driven roller 20b, and the single page cut sheet S discharged by the discharge roller 20 is Further, the sheet is discharged onto the mounting surface 51 on the discharge stacker 50 located downstream.

  The discharge driven roller 20b is a toothed roller having a plurality of teeth on its outer periphery, and is rotatably supported by a roller holder (not shown) for the discharge driven roller. An auxiliary toothed roller 22 is provided upstream of the discharge driven roller 20b, and the single page cut sheet S or the like is pressed slightly downward by the auxiliary toothed roller 22. Further, the transport driven roller 19b is disposed at a slightly downstream side with respect to the transport driving roller 19a, and the discharge driven roller 20b has a shaft center position that is slightly greater than that of the discharge drive roller 20a. Arranged upstream.

  With such a configuration, the single-page cut sheet S or the like is in a curved state commonly referred to as “reverse sled” that slightly protrudes downward between the conveyance roller 19 and the discharge roller 20, and is printed. The single page cut sheet S or the like located at the position facing the head 13 is pressed against the platen 28, thereby preventing the single page cut sheet S or the like from being lifted and recording is executed normally. The auxiliary toothed roller 22 is composed of a toothed roller similar to the discharge driven roller 20b, and is supported by a roller holder for an auxiliary toothed roller (not shown).

  Next, the configuration of the printing apparatus 100 related to the conveyance of the roll print medium R will be described.

  The transport path of the roll print medium R is basically the same as the transport path of the multi-page cut sheet Z. The roll print medium R is a continuous long print medium P having a predetermined width wound around a roll core, and is held by a roll holder 45 in a freely rotatable state. The roll holder 45 is fixed to the apparatus main body 3 in a fixed state, and the apparatus main body so that the roll holder 45 can slide in the width dimension of the roll print medium R according to the width dimension of the roll print medium R or the like. 3 and a movable holder 49 attached in a movable state, and also has a function as a guide member for supplying the print medium P into the transport path.

  The feeding end of the roll print medium R and the like held by the roll holder 45 passes from the entrance 40 of the conveyance path of the roll print medium R through the rear surface of the above-mentioned feed apparatus 2 for the single page cut sheet S, and the feed apparatus 2, and is guided to the recording unit 26 below the print head 13 while receiving the nipping and conveying action by the conveying roller 19 described above. Then, the roll print media R and the like follow the same conveyance path as the single page cut sheet S described above, reach the discharge roller 20, and are conveyed to the cutter device 43 provided further downstream from the discharge stacker 50. Then, if necessary, it is cut into a predetermined length and discharged.

  FIG. 3 is a block diagram schematically illustrating the configuration and functions of the printing apparatus 100.

In addition to the above-described elements, the printing apparatus 100 includes a PE (Paper Existence) sensor 215, a PW (Paper Paper).
Width) sensor 213, rewritable volatile or nonvolatile memory (for example, RAM) 231, and print controller 211.

  The PE sensor 215 is a print media detection sensor provided on the upstream side, for example, above the supply roller 14 and the transport roller 19 in the print media transport path of the printing apparatus 100. The PW sensor 213 is another print medium detection sensor provided on the downstream side, for example, the lower surface of the carriage 10 facing the print medium P in the print medium conveyance path of the printing apparatus 100 (specifically, As will be described later, it is used to detect the width or the like of the print medium P). The PE sensor 215 and the PW sensor 213 are, for example, optical sensors having a light emitting element and a light receiving element, and whether there is a print medium below the sensor is determined by incident light (for example, light incident on the light receiving element) The print controller 211 determines whether the intensity of the reflected light has changed.

  The print controller 211 is a computer program (or hardware or a combination thereof) for controlling various operations for printing, and functions by being read into a CPU from a predetermined storage medium (for example, ROM). . The print controller 211 controls the driving of the carriage motor 209, thereby controlling the travel of the carriage 10, and controlling the print media conveyance control mechanism (for example, various motors) 207, thereby supplying the supply roller 14 and the conveyance roller 14. The rotation of the roller 19 and the discharge roller 20 is controlled. The print controller 211 also performs a process of writing information based on the detection result of the PW sensor 213 accompanying the traveling of the carriage 10 in the memory 231 (details will be described later).

  FIG. 4 shows the multi-page cut sheet Z and the carriage 10 that runs above the multi-page cut sheet Z. In the illustrated multi-page cut sheet Z, the front side of the paper surface is the printing surface, and the back side of the paper surface is the non-printing surface.

  The multi-page cut sheet Z is formed by connecting one or more odd pages 350A and one or more even pages 350B. By alternately valley-folding and mountain-folding a plurality of boundary lines between pages, Can be bellows. Then, on the back surface (the surface on which the image is not printed) of the first page and the last page of the bellows-shaped booklet, the back surface (for example, a two-page spread cover of a multi-page cut sheet) A booklet can be obtained by attaching a surface on which an image is not printed (the booklet is, for example, a photo album if a photographic image is printed on each page of the multi-page cut sheet Z).

  When the upstream side in the transport direction is an odd page 350A and the downstream side thereof is an even page 350B, the boundary line 34 between the odd page 350A and the even page 350B is a valley-folded portion. In this case, it is located inside the printing surface (hereinafter, “boundary line 34” is referred to as “valley folded portion 34”). The valley fold portion 34 is, for example, perforated.

  In the case where the upstream side in the transport direction is the even page 350B and the downstream side is the odd page 350A, the boundary line 33 between the even page 350B and the odd page 350A is a mountain-folded portion. In this case, it is located outside the printing surface (hereinafter, “boundary line 33” is referred to as “mountain fold 33”). For example, muscle push is applied to the mountain fold portion 33. Note that the muscle push means a process of compressing with a press device or the like to make the wall thickness somewhat thin and easy to break, but in this embodiment, a part of the wall thickness of the multi-page cut sheet Z is further reduced. It is used in a broad sense including a so-called half cut that makes it easy to break by cutting a predetermined depth.

  In the multi-page cut sheet Z, a predetermined position in the print medium conveyance direction (hereinafter simply referred to as “conveyance direction”), for example, both ends of the mountain fold portion 33 and both the front end 301 and the rear end 302 of the sheet Z, A notch having a certain length in the transport direction and a certain depth in the main scanning direction is provided. The two notches in each of the mountain fold 33, the front end 301 and the rear end 302 of the sheet Z are constant in the conveying direction with the mountain fold 33, the edge of the front end 301, and the edge of the rear end 302 as centers. Have a length of

  Further, from the rear end 302 of the multi-page cut sheet Z, a nipple tag 300 that protrudes from a page 350B for printing an image extends.

The print controller 211 controls the drive of the print media conveyance control mechanism 207 and the rotation of the carriage motor 209, so that the PW sensor 213 is placed on the position on the conveyance path of the multi-page cut sheet Z and the surface facing the sheet Z. The position of the carriage 10 provided is controlled. That is, the relative printing position between the print head and the multi-page cut sheet Z is controlled. At this time, the printing position PP (in other words, the ink ejection position) from which ink droplets are ejected on the surface of the carriage 10 facing the sheet Z and the sensor position SP of the PW sensor 213 are a predetermined distance Y _OFF. Therefore, the distance (hereinafter referred to as “print offset”) Y _OFF is used. This print offset is stored in advance in the memory 231, for example.

  FIG. 5 shows a processing flow of the print controller 211 when performing print alignment. FIG. 6 shows an enlarged view of the mountain fold 33 and two notches at both ends thereof. Hereinafter, the print alignment process performed by the print controller 211 will be described with reference to both drawings. In the following description, when referring to FIG. 6, the upper side in FIG. 6 is referred to as “back side in the main scanning direction” and the lower side in FIG. 6 is referred to as “front side in the main scanning direction”.

When printing for the target page is completed, the print controller 211 controls the positions of the carriage 10 and the multi-page cut sheet Z so that the print position PP overlaps the boundary line between the page and the next page. Therefore, for example, as shown in FIG. 6, when printing of the target page on the downstream side in the conveyance direction of the mountain fold portion 33 is completed, the print position PP overlaps the mountain fold portion 33, so that the PW sensor 213 It exists at a position Y _E that is separated from the position PP by a print offset Y _OFF along the upstream in the transport direction. When printing of the target page is completed, the print controller 211 calculates a print position at the end of printing based on the sensor position Y _E and the print offset Y _OFF at that time, and writes the calculated print position in the memory 231. (Step S1).

  The print controller 211 can grasp whether the target page is an odd page or an even page by counting the number of printed pages each time an image is printed on the page. When there is a next print request (for example, an unprocessed print job in a predetermined buffer) (Y in S2), the print controller 211 is an odd-numbered target page on which an image is printed in response to the print request. Or an even page (S3).

  As a result of the determination, if the target page is an odd page (Y in S3), the print controller 211 detects that the first sheet edge on the back side in the main scanning direction is detected by the PW sensor 213 (that is, the sheet Z Until the output signal value from the upper PW sensor 213 changes), the carriage 10 is moved to the back side in the main scanning direction (S4).

  Next, the print controller 211 reversely rotates a motor such as the conveyance roller 19 by a predetermined step, and returns the sheet Z to the upstream side in the conveyance direction by a predetermined distance (S5). As a result, the PW sensor 213 moves from the first position y1 on the first sheet edge to the second position y2 on the same sheet edge beyond the notch (hereinafter referred to as the first notch) K1 in the main scanning direction. Located in.

  Next, the print controller 211 causes the carriage 10 to travel forward in the main scanning direction by a predetermined distance (for example, 5 mm) (S6). As a result, the PW sensor 213 is located at the third position y3 inside the sheet Z from the second position y2 on the first sheet edge.

  Next, the print controller 211 continues to transport the multi-page cut sheet Z downstream in the transport direction (S7). When the output signal value from the PW sensor 213 changes, that is, when the first notch edge on the downstream side in the transport direction of the first notch K1 is detected (Y in S8), the print controller 211 detects the sheet Z. The conveyance is temporarily stopped, and the position of the PW sensor 213 (hereinafter referred to as the first notch edge position) Y1 when the first notch edge is detected is written in the memory 231 (S9).

  Next, the print controller 211 continues to convey the multi-page cut sheet Z further downstream in the conveyance direction (S10). When the second notch edge on the upstream side in the transport direction of the first notch K1 is detected (Y in S11), the print controller 211 temporarily stops the transport of the sheet Z, and when the second notch edge is detected. The position of the PW sensor 213 (hereinafter, the second notch edge position) Y2 is written in the memory 231 (S12).

  Next, the print controller 211 conveys the sheet Z to the downstream side in the conveyance direction so that the PW sensor 213 is located at the fourth position y4 that is a predetermined distance away from the third position y3 to the upstream side in the conveyance direction. Subsequently, the carriage 10 is moved forward in the main scanning direction until the second sheet edge on the front side in the main scanning direction is detected (that is, until the output signal value from the PW sensor 213 changes) (S13).

  Thereafter, the same processing as S5 to S12 described above is executed.

  That is, the print controller 211 reversely rotates a motor such as the conveyance roller 19 by a predetermined step, and returns the sheet Z to the upstream side in the conveyance direction by a predetermined distance. As a result, the PW sensor 213 passes from the fifth position y5 on the second sheet edge to the notch (hereinafter referred to as the second notch) K2 on the front side in the main scanning direction, and reaches the sixth position y6 on the sheet edge. Located in.

  Next, the print controller 211 moves the carriage 10 to the back side in the main scanning direction by a predetermined distance (for example, 5 mm). As a result, the PW sensor 213 is located at the seventh position y7 inside the sheet Z from the sixth position y6 on the second sheet edge.

  Next, the print controller 211 continues to convey the multi-page cut sheet Z downstream in the conveyance direction. When the output signal value from the PW sensor 213 changes, that is, when the third notch edge on the downstream side in the transport direction of the second notch K2 is detected, the print controller 211 temporarily stops the transport of the sheet Z. The position of the PW sensor 213 (hereinafter, the third notch edge position) Y3 at the time of detecting the third notch edge is written in the memory 231.

  Next, the print controller 211 continues to convey the multi-page cut sheet Z further downstream in the conveyance direction. The print controller 211 temporarily stops the conveyance of the sheet Z when the fourth notch edge on the upstream side in the conveyance direction of the second notch K2 is detected, and the PW sensor 213 detects the fourth notch edge. The position (hereinafter, the fourth notch edge position) Y4 is written in the memory 231.

  Through the series of processes described above, the first notch edge position Y1, the second notch edge position Y2, the third notch edge position Y3, and the fourth notch edge position Y4 are stored in the memory 231. Each position Y1 to Y4 can be grasped from the number of rotations of the carriage motor 209, the motor of the conveying roller 19, and the like.

Print controller 211, using the position Y1~Y4 stored in the memory 231, calculates the position _{Y 5} of mountain fold portion 33, specifically, for example, the following equation (1),
Y ₅ = (Y1 + Y2 + Y3 + Y4) / 4 (1)
Situated _{Y 5} mountain folding portion 33 by. Then, the print controller 211 calculates a print position at the start of printing based on the calculated position YS and the print offset Y _OFF stored in advance in the memory 231 (S15). As a result, the printing position at the start of printing is located on the mountain folded portion 33.

  Thereafter, the print controller 211 controls the conveyance of the sheet Z and the traveling of the carriage 10 so that the print position PP on the carriage 10 overlaps the print position at the start of printing calculated in S15 (S16). Thereafter, for example, the printing process is started after the print controller 211 returns the carriage 10 to the home position.

  As a result of the determination in S3, if the target page is an even page (N in S3), the boundary line between the previous page and the target page is a valley fold portion 34 and no notch is provided. The controller 211 determines the print position at the end of printing stored in the memory 231 in S1 as the print position at the start of printing of the target page, and performs S16 described above. The reason why the notch is not provided in the valley fold portion 34 is to improve the appearance when the multi-page cut sheet Z is used for a photo album or the like. In other words, two pages sandwiching the valley fold portion 34 are spread, but if a notch is provided in the valley fold portion 34, there will be depressions above and below the boundary line of such two spread pages, This is because there may be users who do not like this.

  The above is the processing flow of the print controller 211 when performing print alignment.

  In this processing flow, for example, the print controller 211 continues to convey the sheet Z downstream in the conveyance direction without stopping from the third position y3 to the fourth position y4, and at that time, the output signal of the PW sensor 231 Each time the value changes, the sensor position (the first notch edge position Y1 to the fourth notch edge position Y4) at that time may be stored in the memory 231.

In the processing flow described above, there is a case where at least one of the first notch edge position Y1 to the fourth notch edge position Y4 is detected. In that case, the print controller 211, in a manner illustrated below, determine the position Y ₅ mountain folding portion 33.

(A) Although the four notch edge positions Y1 to Y4 were not detected, the first notch edge position Y1 and the second notch edge position Y2, the first notch edge position Y1 and the fourth notch edge position Y4. When two positions of the second notch edge position Y2 and the third notch edge position Y3 or the third notch edge position Y3 and the fourth notch edge position Y4 are detected, the print controller 211 detects The position Y5 of the mountain fold portion 33 is calculated based on the two positions. Specifically, for example, the print controller 211 has the following equation (2):
Y ₅ = (first detection success position (for example, Y1) + second detection success position (for example, Y2)) / 2 (2)
Obtaining the _{Y 5} using.

(B) Although the four notch edge positions Y1 to Y4 were not detected, the first notch edge position Y1 and the third notch edge position Y3, or the second notch edge position Y2 and the fourth notch edge When the two positions Y4 are detected, the print controller 211 calculates the position Y5 of the mountain fold portion 33 based on the two detected positions and the length N of the notches K1 and K2. Specifically, for example, the print controller 211 has the following equation (3):
Y ₅ = (first detection success position (for example, Y1) + second detection success position (for example, Y3)) / 2 + N / 2 (or −N / 2) (3)
Obtaining the _{Y 5} using.

(C) When only one of the four notch edge positions Y1 to Y4 is detected, the print controller 211 is based on the detected one position and the length N of the notches K1 and K2. Thus, the position Y5 of the mountain fold portion 33 is calculated. Specifically, for example, the print controller 211 has the following equation (4):
Y ₅ = successful detection position (for example, Y1) + N / 2 (or −N / 2) (4)
Obtaining the _{Y 5} using.

  (D) If all the four notch edge positions Y1 to Y4 have failed to be detected, the print controller 211 prints the print position at the end of printing stored in the memory 231 in S1 at the start of printing the target page. Determine the position.

  As described above, according to the first embodiment described above, the printing apparatus 100 includes the position of the first notch provided at one end of the page-to-page boundary line 33 of the multi-page cut sheet Z and the boundary line 33. The position of the second notch provided at the other end is detected, and the printing position is controlled by grasping the boundary position between the pages based on the position detection result of the two boundary marks. As a result, even if the multi-page cut sheet Z is conveyed in an inclined state, printing alignment is controlled with high accuracy based on the positions of the two notches on both sides orthogonal to the conveyance direction.

  The second embodiment of the present invention will be described below. In the second embodiment, the printing apparatus 100 selects and executes a print control mode corresponding to the type of print medium among a plurality of print control modes in addition to or instead of the above-described print alignment process. This will be specifically described below. In addition, description is abbreviate | omitted or simplified about the same part as 1st Example, and difference is mainly demonstrated (this is the same also about the other 2nd-4th Example mentioned later).

  FIG. 7 shows an outline of the processing flow of the print controller 211 that selectively executes the print control mode.

  When performing printing using the roll holder 45 (see FIG. 1 and FIG. 2), the print controller 211 takes the printing medium (roll printing medium R or multi-page cut sheet Z) from the roll holder 45 into the apparatus main body 3. (S21).

  Next, the print controller 21 performs a print media width measurement process (S22). Specifically, the print controller 21 controls the conveyance of the print medium P and the travel of the carriage 10, and should exist if the print medium P is a multi-page cut sheet Z based on the output signal value of the PW sensor 213. The first sheet width at the first predetermined position in the transport direction where there is a notch and the second sheet width at the second predetermined position where there is no notch even for the sheet Z are measured, and the first sheet width and the second sheet width are measured. If the sheet widths are substantially different, the print medium P is determined to be a multi-page cut sheet Z, and if not, the print medium P is determined to be a roll print medium R.

  When it is determined that the print controller 21 is the roll print medium R (N in S23), the print controller 21 executes the roll print medium mode (S24), and when it is determined that the roll page is the multi-page cut sheet Z (Y in S23). Then, the multi-page cut sheet mode is executed (S25).

  FIG. 8 shows a detailed flow of the print media width measurement process. FIG. 9 shows the position of the width measured in the print media width measurement process.

  The print controller 211 passes a predetermined time length (for example, 3 seconds) after the print medium P is detected by the PE sensor 215 due to the taken print medium P passing below the PE sensor 215 (see FIG. 3). (S22-1), the print medium P is transported by a predetermined distance downstream in the transport direction (S22-2). As a result, when the carriage 10 travels in the main scanning direction, the first predetermined position of the print medium P reaches the position where the PW sensor 213 passes above the first predetermined position. Yes.

  Therefore, the print controller 211 causes the carriage 10 to travel and measures the first sheet width PW1 of the print medium P based on the output signal value from the PW sensor 213 that changes accordingly (S22-3). The first sheet width PW1 thus written is written in the memory 231.

  Next, the print controller 211 further transports the print medium P by a predetermined distance further downstream in the transport direction (S22-4). As a result, the second predetermined position of the print medium P reaches a position where the PW sensor 213 passes above the second predetermined position when the carriage 10 travels in the main scanning direction.

  Therefore, the print controller 211 causes the carriage 10 to travel and measures the second sheet width PW2 of the print medium P based on the output signal value from the PW sensor 213 that changes in accordance with the travel (S22-5). The second sheet width PW2 thus written is written in the memory 231.

  Then, the print controller 211 compares the first sheet width PW1 and the second sheet width PW2 stored in the memory 231 (S22-6).

  As a result of the comparison, if the first sheet width PW1 and the second sheet width PW2 are substantially the same (Y in S22-7), the print controller 211 selects the roll print media mode (S22-8). On the other hand, as a result of the comparison, if the first sheet width PW1 and the second sheet width PW2 are substantially different, specifically, if the first sheet width PW1 is shorter than the second sheet width PW2 ( In step S22-7, N), the print controller 211 selects the multi-page cut sheet mode (S22-9).

  When the multi-page cut sheet mode is executed, the print controller 211 controls the conveyance of the multi-page cut sheet Z as shown in FIG. 10A, and the leading end of the sheet Z is placed under the print head 13 (in other words, In this case, it is positioned just below the printing position PP in the carriage 10. Thereby, when an image is printed on the multi-page cut sheet Z, the image is printed from the front end of the sheet Z.

  When the roll print medium mode is executed, the print controller 211 further conveys the roll print medium R to the downstream side in the conveyance direction, as shown in FIG. Capture below. Thus, when an image is printed on the roll print medium R, the image is printed from the middle of the roll print medium R, but the leading edge of the roll print medium is pressed by the discharge roller 20 so that the roll print medium is not bent. Therefore, a good printed image can be obtained.

  As described above, according to the second embodiment described above, if the print medium P is a multi-page cut sheet Z, print control suitable for the sheet Z is performed, and if the print medium P is a roll print medium R, Print control suitable for the roll print medium R is performed.

  The third embodiment of the present invention will be described below. In the third embodiment, in addition to or in place of the print alignment process in the first embodiment and / or the print control mode selection in the second embodiment, even when printing of the multi-page cut sheet Z is completed. A process of nipping the multi-page cut sheet Z is performed so as not to fall from the printing apparatus 100 (in other words, not to be detached). This will be specifically described below.

  FIG. 11 shows a processing flow of the print controller 211 that controls the multi-page cut sheet Z that has been printed so as not to be discharged from the printing apparatus and dropped.

  The print controller 211 starts printing in response to a certain print request (Y in S31), and executes a printing process (for example, ink droplet ejection from the print head 13) (S32). While this printing process is being executed (N in S33), the print controller 211 is a print cancel request for stopping the printing process in response to a print request for all pages or a part of the pages of the multi-page cut sheet Z. If no request is received (S34N), the printing process is continued (note that the print cancel request is a predetermined method, for example, when the user presses a print cancel request button provided in the printing apparatus 100, the printing apparatus 100 This is received when the power supply of the computer is turned off or when a predetermined operation is performed on a host device connected to be communicable).

  When the printing process is completed (Y in S33), if the presence of the sheet Z is detected by the PE sensor 215 on the upstream side in the transport direction of the printing position PP (Y in S37), the print controller 211 Since print processing may be performed on the remaining pages, the process returns to S31.

  On the other hand, when the printing process is finished (Y in S33), if the presence of the sheet Z is not detected by the PE sensor 215 (N in S37), in other words, the print controller 211 returns the last page of the sheet Z. When printing is completed, a predetermined alert, for example, a message “Please issue a sheet discharge request and take out a sheet” is displayed on a predetermined display screen (for example, an operation panel of the printing apparatus 100 or a display screen of its host device). (S38).

  That is, when printing of the last page of the multi-page cut sheet Z is completed, the print controller 211 stops driving the transport roller 19 so that the sheet Z is not transported any more after transporting the sheet Z by a predetermined distance. The nipple tag 300 shown in FIG. 12 is pressed against the platen by the conveying roller 19. As a result, the multi-page cut sheet Z is nipped without dropping from the printing apparatus 100 even after printing is finished (note that the length L in the conveyance direction of the nipple tag 300 is the image up to the rear end of the last page. Is sufficiently long (for example, 3 cm) that the nipple tag 300 is nipped by the transporting roller 19 even if is printed. For this reason, it is possible to prevent the image printed on each page from being broken due to the sheet Z falling when the ink is not dry.

  However, in this state, the user cannot take out the multi-page cut sheet Z that has been printed.

  Therefore, the print controller 211 receives a sheet discharge request, which is a request for discharging the multi-page cut sheet Z that has not been released from the printing apparatus 100 so as to be released. The nip of the page cut sheet Z is opened and the multi-page cut sheet Z is discharged in a detachable manner (note that the sheet discharge request is a predetermined method, for example, a sheet discharge request provided in the printing apparatus 100) This is received when the button is pressed by the user or when a predetermined operation is performed on the host device connected to be communicable).

  That is, if the print controller 211 does not receive a sheet discharge request after S38 (N in S39), the print controller 211 maintains the state where the sheet Z is nipped by the conveying roller 19, but when the sheet discharge request is received ( In step S39, the sheet discharge process is executed to cancel the state and discharge the sheet Z in a detachable manner (S35). When the print controller 211 receives a sheet discharge request after N in S31, for example, the print controller 211 executes a sheet discharge process for discharging the taken sheet Z in a detachable manner (S35). Further, when the print controller 211 receives a print cancel request during the printing process (Y in S34), the print controller 211 executes a process of discharging the multi-page cut sheet Z without being niped (S35).

  FIG. 13 shows the detailed flow of the sheet discharge process.

  First, the print controller 211 determines whether or not the presence of the sheet Z is detected by the PE sensor 215 (S35-1).

  If the presence of the sheet Z is not detected (N in S35-1), for example, since the nipple tag 300 of the sheet Z is nipped by the conveyance roller 19, the print controller 211 performs conveyance to release the state. By rotating a motor such as the roller 19 for n steps (n is a predetermined integer) (S35-3), the sheet Z is discharged so as to be detached from the printing apparatus 100.

  On the other hand, if the presence of the sheet Z is detected (Y in S35-1), for example, since the printing process is in progress, the print controller 211 continues to convey the sheet Z until the presence of the sheet Z is no longer detected (S35-2). ). Accordingly, when the presence of the sheet Z is not detected (N in S35-1), as described above, the print controller 211 rotates the motor such as the conveying roller 19 by n steps (n is a predetermined integer). (S35-3), the sheet Z is discharged so as to be detached from the printing apparatus 100.

  As described above, according to the third embodiment, even when printing of the last page of the multi-page cut sheet Z is completed, the sheet Z is nipped without dropping from the printing apparatus 100. For this reason, it is possible to prevent the image printed on each page from being broken due to the sheet Z falling when the ink is not dry.

  The fourth embodiment of the present invention will be described below. In this fourth embodiment, in addition to or instead of the print alignment processing in the first embodiment, the print control mode selection in the second embodiment, and the nip of the sheet Z in the third embodiment, the target page is Printing control is performed according to whether or not the mountain-folded portion 33 is downstream in the transport direction. This will be specifically described below.

  FIG. 14 shows a processing flow of the print controller 211 that performs print control according to whether or not the target page is downstream in the conveyance direction of the mountain fold portion 33.

  Each time an image is printed on the multi-page cut sheet Z, the print controller 211 counts the number of printed pages and updates the count value to determine whether the target page to be printed is an odd page or an even page. can do.

  When the print controller 211 obtains a print request when printing an image on the multi-page cut sheet Z (Y in S51), the print controller 211 determines whether the target page is an odd page or an even page (S52). As a result, if the target page is an odd page (Y in S52), that is, if the target page is on the downstream side in the conveyance direction of the mountain fold portion, the print controller 211 has two A print position at the start of printing is determined based on the notch (S53). On the other hand, if the target page is an even number, that is, if the target page is on the downstream side in the conveyance direction of the mountain fold portion, the print controller 211 sets the print position at the end of printing the previous page at the start of printing the target page. (S54).

  Next, the print controller 211 determines whether or not the size of the image (for example, the vertical and horizontal length of the image) based on the target print data included in the print request acquired in S51 is equal to or larger than a predetermined size, for example, the image It is determined whether the size is for one page or two pages (S55).

  As a result of the determination in S55, if it is determined that there is one page (for example, if the target print data has a data size suitable for printing on the L plate) (N in S55), the print controller 211 determines the number of printed pages. The count value is incremented by 1 (S56), and an image based on the target print data is printed on the target page (S58).

  On the other hand, as a result of the determination in S55, when it is determined that there are two pages (for example, the target print data has a data size suitable for 2L printing) (Y in S55), the print controller 211 prints the printed page. The count value of the number is incremented by 2 (S57), and an image based on the target print data is printed over the two pages of the target page and the next page (S58).

  As described above, according to the fourth embodiment described above, when the target page is an even page, in other words, when the target page is on the downstream side in the transport direction of the valley fold portion, the print start position is not controlled. The print start position is controlled only when the target page is on the downstream side in the conveyance direction of the mountain folded portion. As a result, printing can be performed at a higher speed than when the print start position is controlled for each page. Since the two pages sandwiching the valley fold portion are spread, the print start position is not controlled at the valley fold portion, so even if the print start position slightly deviates from the valley fold portion, it is very uncomfortable for the user to view the image. It will not be.

  By the way, in the modification of the fourth embodiment, whether or not to print an image over two pages depends on whether or not the target page is on the downstream side in the transport direction of the valley fold portion 34 (in other words, the target It may be controlled based on whether or not the page is a left-page spread. Specifically, for example, when the target page is downstream in the conveyance direction of the valley fold portion 34 (for example, when the target page is an odd page), the size of the image based on the target print data is a predetermined size. If it is above (or regardless of the image size), the image may be printed over two pages, the target page and the next page. Further, for example, when the target page is on the upstream side in the conveyance direction of the valley fold portion 34 (for example, when the target page is an even page), the print controller 211 prints an image based on the target print data only on the target page. Also good. As a result, when two continuous pages are spread, one image is printed over the two pages. However, when the two pages are not spread, the two pages are spread. No single image is printed.

  In the modification of the fourth embodiment (or other embodiments), when printing a multi-page cut sheet to which a cover is attached, an odd page is not cut out of two spread pages of the multi-page cut sheet. The print controller 211 may skip printing the even two pages of the two spread pages and start printing from the odd pages of the next two spread pages.

  That is, as shown in FIG. 15A, when the cover sheet 500 is pasted on a multi-page cut sheet composed of a plurality of (for example, two) spread two pages, the back surface of the odd page 350A that is the first page The back surface of the cover sheet 500 is pasted on the back surface of the even page 350B which is the last page.

  However, in this multi-page cut sheet, when an odd page (for example, the first page) 350A of two spread pages is cut, when the cover 500 is pasted on the cover 500 to the multi-page cut sheet from which the odd page 350A is cut, As shown in FIG. 15B, the next even page (that is, the first page here) 350B is folded on the back side of the next two-page spread odd page 350A and the cover page 500 is pasted. Is attached to the back surface of the cover sheet 500. For this reason, it is useless to print an image on the front page. In view of this, in the second modified example, when the odd page is not cut out of the two spread pages of the multi-page cut sheet, the print controller 211 determines that the two spread pages are even pages. Printing may be skipped and printing may be started from the next odd-numbered two-page spread. Specifically, for example, the print controller 211 performs printing on the first page or skips based on whether or not a specific mark (for example, a notch) is detected from the first page of the multi-page cut sheet. May be controlled. More specifically, for example, when a cutout is provided only in the mountain fold portion 33 and no cutout is provided in the valley fold portion 34, the print controller 211 has not detected a cutout from the first page. In this case, printing of an image may be started from the next page without printing an image on the first page.

  The preferred embodiments of the present invention have been described above, but these are examples for explaining the present invention, and the scope of the present invention is not limited to these embodiments. The present invention can be implemented in various other forms.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic perspective view when a printing apparatus according to a first embodiment of the present invention is viewed obliquely from the rear. FIG. 2 is a cross-sectional view of the printing apparatus of FIG. 1. 2 is a block diagram schematically showing the configuration and functions of the printing apparatus 100. FIG. A multi-page cut sheet Z and a carriage 10 that travels above the multi-page cut sheet Z are shown. The processing flow of the print controller 211 when performing print position alignment is shown. An enlarged view of a mountain fold 33 and two notches at both ends thereof is shown. An outline of a processing flow of the print controller 211 that selectively executes the print control mode, which is a processing flow performed in the second embodiment of the present invention, is shown. The detailed flow of a print media width measurement process is shown. The position of the width measured in the print media width measurement process is shown. (A) is a figure for demonstrating the printing control in case multipage cut sheet mode is performed, (B) is a figure for demonstrating the printing control in case roll printing media mode is performed. It is. 9 shows a processing flow performed in the third embodiment of the present invention, and shows a processing flow of the print controller 211 that controls the multi-page cut sheet Z that has been printed so as not to be ejected from the printing apparatus and dropped. A nipple tag 300 is shown. The detailed flow of sheet discharge processing is shown. The processing flow performed in the fourth embodiment of the present invention, showing the processing flow of the print controller 211 that performs print control according to whether or not the target page is on the downstream side of the mountain folded portion 33 in the transport direction. The figure for demonstrating the modification in the 1st-4th at least 1 Example of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Carriage 13 Print head 14 Supply roller 19 Transport roller 20 Discharge roller 100 Printing device 207 Print media transport control mechanism 209 Carriage motor 211 Print controller 213 PW sensor 215 PE sensor 231 Memory

Claims (5)

A printing apparatus capable of printing an image on a multi-page cut sheet composed of a plurality of serially connected pages,
A print head for printing an image on the multi-page cut sheet;
Notch detection means for detecting a position of a first notch provided at one end of a page-to-page boundary line of the multi-page cut sheet and a position of a second notch provided at the other end of the boundary line When,
A boundary position grasping means for grasping a boundary position between the pages based on the position detection result of the first notch and the second notch;
A print control means for controlling a relative print position between the print head and the multi-page cut sheet at the start of image printing based on the grasped boundary position;
The first notch and the second notch have a certain length in a direction perpendicular to the boundary line with the boundary line as a center,
The notch detection means detects a first end and a second end at both ends in the length direction of the first notch, and a third end and a fourth end at both ends in the length direction of the second notch. Is able to
The first end and the third end are at one end of the first notch and the second notch, and the second end and the fourth end are of the first notch and the second notch. At the other end,
The boundary position grasping means includes the following processes (1) to (4):
(1) When four positions from the first end to the fourth end are detected, the boundary position is grasped based on the detected four positions.
(2) Although the four positions were not detected, the first end and the second end, the first end and the fourth end, the second end and the third end, or the third end When the two positions of the fourth end are detected, the boundary position is grasped based on the two detected positions.
(3) Although the four positions are not detected, the two detected positions are detected when two positions of the first end and the third end or the second end and the fourth end are detected. Grasping the boundary position based on one position and the length of the notch,
(4) When only one position from the first end to the fourth end is detected, the boundary position is grasped based on the detected one position and the length of the notch.
Run the
Printing device. The boundary position grasping means is
In the processing of (1), the boundary position is grasped by calculating (the position of the first end + the position of the second end + the position of the third end + the position of the fourth end) / 4. And
In the process (2), the position of the boundary is grasped by calculating (one position of the two positions + the other position of the two positions) / 2,
In the process (3), {(one position of the two positions + the other position of the two positions) / 2} + (the length of the first and second notches) / 2 or {(one position of the two positions + the other position of the two positions) / 2} − (the length of the first and second notches) / 2 By grasping the position of the boundary,
In the process of (4), (the detected one position) + (the length of the first and second notches) / 2, or (the detected one position) − (the first position And the length of the second notch) / 2 to obtain the position of the boundary,
The printing apparatus according to claim 1 . An end position detecting means for detecting a print end position;
Storage means for storing the print end position,
The multi-page cut sheet is provided with a plurality of page-to-page boundary lines, and a mountain-folding boundary line that is scheduled to be folded and a valley-folding boundary line that is scheduled to be folded alternately Lined up
The first and second cutouts are provided at both ends of the mountain fold boundary line, but are not provided at both ends of the valley fold boundary line,
The print control means stores the print end position in the storage means, and then detects the positions of the first notch and the second notch to detect the print start position of the next page. When the lack is not detected, the stored print end position is set as the print start position of the next page.
The printing apparatus according to claim 1 or 2 . The multi-page cut sheet is provided with a plurality of page-to-page boundary lines, and a mountain-folding boundary line that is scheduled to be folded and a valley-folding boundary line that is scheduled to be folded alternately Lined up
Print data acquisition means for acquiring print data;
Page discrimination means for discriminating whether the target page to be printed is located on the downstream side in the sheet conveying direction of the boundary line for the valley fold or the mountain fold,
When it is determined that the target page is downstream of the mountain fold boundary line in the sheet conveyance direction, the print control unit displays an image based on the acquired print data as two pages, the target page and the next page. Printing over
The printing apparatus according to any one of claims 1 to 3. The multi-page cut sheet is provided with a plurality of page-to-page boundary lines,
The plurality of boundary lines include a mountain fold boundary line that is to be folded in a mountain and a valley fold boundary line that is to be folded in a valley,
Print data acquisition means for acquiring print data;
Page discrimination means for discriminating whether the target page to be printed is located on the downstream side in the sheet conveying direction of the boundary line for the valley fold or the mountain fold;
If it is determined that the target page is downstream of the valley folding boundary line in the sheet conveyance direction, the print control unit does not control the print start position of the target page and immediately before the target page. When printing is started from the printing end position of the page and it is determined that the target page is downstream of the mountain fold boundary line in the sheet conveying direction, printing is performed after controlling the printing start position of the target page. Start,
The printing apparatus according to any one of claims 1 to 3.