JP2007307656A - Cutting device, post-treatment device and image formation device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent the occurrence of trouble wherein cutting chips generated by a cutting device are attached around a cutting blade and not discharged, and to secure the durability of a paddle. <P>SOLUTION: This cutting device for uniformly cutting the end part of a paper sheet bundle stacked with a plurality of paper sheets with a cutting blade, is disposed with the rotatable paddle near the cutting blade in such a position that its tip part slidingly rubs the side face of the cutting blade when the paddle is rotated. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a cutting device for trimming the edge portion of a sheet bundle in which a plurality of sheets are stacked, a post-processing device for post-processing an image-recorded sheet discharged from an image forming apparatus and cutting a fore edge, The present invention also relates to an image forming apparatus including an image forming unit and a post-processing device.

  2. Description of the Related Art Conventionally, a post-processing apparatus including a cutting device that cuts a small edge portion of a booklet and aligns the small edge of a booklet that has been subjected to saddle stitching processing or half-folding processing has been put into practical use in the printing industry.

  In recent years, a paper on which an image has been formed by an image forming apparatus such as a copying machine or a printer is received, subjected to saddle stitching processing and half-folding processing, and is bound into a book like a weekly magazine. There is provided a post-processing apparatus provided with a cutting device that cuts the fore edge portion to align the fore edge.

  The sheet bundle cutting device described in Patent Document 1 holds a sheet bundle vertically or obliquely by a holding rotation unit that holds the sheet bundle, and the sheet cutting waste generated when the sheet bundle is subjected to the cutting process by its own weight or It is removed from the vicinity of the cutting blade by the removing means.

  The sheet bundle cutting apparatus described in Patent Document 2 is a sheet bundle cutting apparatus that reciprocates the cutting blade to cut the end portion of the sheet bundle. From the vicinity of the cutting blade, the cutting pieces cut by the cutting blade are removed from the vicinity of the cutting blade. To be removed.

  The cutting device described in Patent Document 3 is provided with a scraper formed of an elastic thin plate that elastically contacts the upper moving blade and removes cutting waste adhering to the upper moving blade.

The paper cutting device described in Patent Document 4 includes a paper presser that descends and a cutter that rises, and a continuous paper dust drop cover is attached to the blade surface at the tip of the cutter.
Japanese Patent Laying-Open No. 2005-40890 (Claim 15, FIG. 15) Japanese Patent Laying-Open No. 2005-169598 (paragraph number 0080, FIG. 11) JP-A-2005-342854 (Claim 1, FIG. 1) Japanese Patent Laying-Open No. 2005-271175 (paragraph number 0027, FIG. 5)

  In the sheet bundle cutting apparatus disclosed in Patent Document 1, a removing unit such as a paddle abuts on sheet cutting waste cut from a vertically or obliquely held sheet bundle and removes it in a direction away from the sheet bundle. Therefore, the sheet bundle is not suitable for a cutting apparatus that holds the sheet bundle at a horizontal or near-horizontal angle and cuts the end portion of the sheet bundle.

  The sheet bundle cutting device of Patent Document 2 is provided with paddles for discharging chips on both sides of the disk-shaped cutting blade in the forward and backward directions, and it is impossible to cut the end of a thick sheet bundle at a time. is there.

  The cutting device described in Patent Document 3 is a device that removes cutting waste adhering to the upper moving blade by a scraper formed of an elastic thin plate and drops it by its own weight. When cutting the end of a thick sheet bundle, It is difficult to reliably remove cutting waste from the vicinity of the tip of the moving blade that has bitten into the bundle.

  The paper cutting device described in Patent Document 4 has the same paper cutting device as the paper cutting device according to the present invention, and the paper cutting device provided with the descending paper restraint and the ascending cutter is continuous with the blade surface at the tip of the cutter. However, it does not remove the cutting waste adhering to the tip of the cutter.

  The cutting device of the present invention aims to prevent the occurrence of trouble in which cutting waste generated by the cutting device adheres to the cutting blade and is not discharged. Furthermore, it aims at ensuring the durability of the paddle.

  Another object of the post-processing apparatus of the present invention is to reliably and stably operate a cutting apparatus for cutting an edge portion of a bound sheet bundle.

  It is another object of the present invention to provide an image forming apparatus capable of continuing the image forming operation and the post-processing operation without stopping the driving of the post-processing device and the image forming apparatus. Is.

  The above object is achieved by the following post-processing apparatus and image forming apparatus of the present invention.

  1. In a cutting apparatus for cutting and aligning an edge portion of a bundle of sheets on which a plurality of sheets are stacked with a cutting blade, a rotatable paddle is disposed in the vicinity of the cutting blade, and the leading end of the paddle is rotated when the paddle is rotated. A cutting apparatus, wherein the paddle is disposed at a position where the side surface of the sheet is rubbed.

  2. 2. A post-processing apparatus according to claim 1, wherein the post-processing apparatus performs bookbinding by aligning a plurality of sheets, and includes the cutting apparatus according to 1 described above that cuts an edge portion of the bound sheet bundle.

  3. An image forming unit that forms an image on a sheet, and an edge portion of a sheet bundle produced by performing post-processing on a plurality of sheets on which an image has been formed by the image forming unit is cut by a cutting device to produce a bookbinding product. An image forming apparatus comprising: the post-processing apparatus according to 2 above.

  The cutting apparatus, post-processing apparatus, and image forming apparatus of the present invention provide the following effects.

  1. It is possible to prevent a trouble that cutting waste generated by the cutting device for cutting the edge of the sheet bundle adheres to the cutting blade and is not discharged.

  2. After performing post-processing such as half-folding and saddle stitching, in a post-processing apparatus that aligns and binds a plurality of sheets, the cutting device that cuts the edge portion of the bound sheet bundle is surely stable. It can be activated.

  3. By the stable operation of the cutting apparatus, an image forming apparatus capable of continuously performing high-speed processing of the image forming operation and the post-processing operation without stopping the driving of the image forming apparatus is provided.

  Hereinafter, the present invention will be described in detail with reference to embodiments shown in the drawings.

[Cutting device]
FIG. 1A is a main part front view showing a standby state of the cutting apparatus 100, and FIG. 1B is a side view of the main part.

  A blade receiving member driving means 110 is disposed at the upper part of the main body of the cutting apparatus 100, and a cutting blade moving means 120 is disposed at the lower part of the main body.

  The edge portion a of the sheet bundle SS carried into the cutting device 100 is cut by the vertical lowering of the blade receiving plate of the blade receiving member driving unit 110 and the upward raising of the cutting blade 121 of the cutting blade moving unit 120 in the oblique direction.

  On the upper part of the blade receiving member driving means 110, a rotating shaft 111 supported at both ends is installed. The rotating shaft 111 is rotated by the motor M1. The rotating shaft 111 is provided with screw portions 111A and 111B having twist angles opposite to each other, and a screw 112A and a screw 112B are screwed into the screw portion 111A and the screw portion 111B, respectively. As the rotary shaft 111 rotates, the moving body 113A holding the screw 112A and the moving body 113B holding the screw 112B linearly move in directions opposite to each other.

  The lower end of the connecting rod 114A that is swingably supported by a part of the moving body 113A is engaged with the upper left portion of the small-mouth pressurizing member 115 in the figure and supported so as to be movable up and down. Similarly, the lower end of the connecting rod 114B that is swingably supported by a part of the moving body 113B is engaged with the upper right portion of the figure shown in FIG.

  Therefore, the rotation shaft 111 is rotated by the driving rotation of the motor M1, the moving bodies 113A and 113B move to the left and right, the inclination of the connecting rods 114A and 114B changes, and the fore edge pressurizing member 115 moves in parallel up and down. .

  A blade receiving plate 116 is fixed to the lower surface of the fore edge pressurizing member 115 and moves up and down in parallel with the fore edge pressurizing member 115. The blade receiving plate 116 is made of a resin material.

  The cutting blade moving means 120 includes a cutting blade 121, a cutting blade holder 122, support plates 123 </ b> A and 123 </ b> B, a distance holding member 124, a connecting member 125, a fixing means, a fixed support stand 127, and the like.

  The cutting blade 121 having a cutting edge formed on the upper edge is fixed and held on the cutting blade holder 122 by a screw member 121A. The cutting blade holder 122 is supported so as to be movable between opposing surfaces of a pair of support plates 123A and 123B arranged in parallel. A gap holding member 124 is sandwiched between the opposing surfaces of the support plates 123A and 123B, and the cutting blade holder 122 is held at a movable gap.

  The connecting member 125 passes through the support plates 123A and 123B and the space holding member 124 having a hollow cylindrical shape, and holds and fastens the support plates 123A and 123B at a predetermined interval.

  The interval between the sliding surfaces of the support plates 123A and 123B facing each other by the interval holding member 124 is set within a range of 0.1 to 0.5 mm with respect to the thickness of the cutting blade holder 122, and the cutting blade holder 122 is obstructed. The gap can be lifted up and down without any problems

  The connecting means including the connecting member 125 and the interval holding member 124 is disposed at a plurality of locations on the support plates 123A and 123B, and firmly holds a predetermined interval.

  Rollers 128A and 128B are fixed to the cutting blade holder 122, and the rollers 128A and 128B are respectively guided by guide members 129A and 129B that are inclined to the right.

  By the driving means connected to the motor M2, the pin 122A fixed to the cutting blade holder 122 is linearly moved to the left and right in the drawing, and the cutting blade holder 122 is linearly moved to the left and right via the pin 122A, whereby the cutting blade holder 122 is moved. The rollers 128A and 128B fixed to the head move obliquely up and down as indicated by the arrow J direction along the guide members 129A and 129B.

  The sheet bundle SS introduced into the cutting apparatus 100 is transported on the fixed support stand 127 of the cutting blade moving means 120 with the front end a leading by a transport means (not shown) and stops at a predetermined position. At this stop position, the sheet bundle SS is sandwiched between the fixed support base 127 and the descending blade receiving plate 116, and the fore edge a is cut by the ascending cutting blade 121.

  Next, the operation of the cutting apparatus 100 will be described.

  In the standby state, the moving body 113A is positioned at the left end, the moving body 113B is positioned at the right end, the blade receiving plate 116 is at the upper limit position, and the cutting blade 121 is waiting at the lower limit position.

  When the sheet bundle SS is introduced into the cutting apparatus 100, the motor M1 is activated to drive the moving bodies 113A and 113B, and the fore edge pressurizing member 115 is lowered via the connecting rods 114A and 114B. At the position where the fore edge pressurizing member 115 is detected by the detecting means PS, the motor M1 stops and the forehead pressurizing member 115 stops. The stop position of the edge pressing member 115 is determined by the position setting of the detection means PS, and the position of the detection means PS is determined by the number of sheets forming the sheet bundle SS. Therefore, in the operation unit of the image forming system, the lowering position of the edge pressing member 115 is set according to the number of sheets constituting the set sheet bundle SS.

  The fore edge pressing member 115 presses the sheet bundle SS with a large pressure so that no deviation occurs even when a lateral force is applied to the stacked sheets by the cutting blade 121 at the time of cutting described later. .

  At the stage where the pressing of the sheet bundle SS is completed, the motor M2 is activated to move the cutting blade 121 to the upper left of the arrow J. By this movement of the cutting blade 121, the sheet bundle SS is cut. Since the cutting action of the cutting blade 121 is cutting by sliding the blade, cutting with a relatively small driving force is possible, and even if the number of sheets to be cut increases, only the moving stroke of the cutting blade 121 changes. The driving force does not change.

  When all the sheets of the sheet bundle SS are cut, the cutting edge of the cutting blade 121 comes into contact with the blade receiving plate 116, and the driving force of the cutting blade 121 increases. The control means detects the increase of the driving force, that is, the increase of the motor driving current due to the increase of the load of the motor M1, and the control unit stops the driving of the motor M2. In this way, all the sheets constituting the sheet bundle SS are cut.

  When the fore edge cutting process is completed, the motor M2 rotates in the reverse direction, and the cutting blade 121 descends to a predetermined position diagonally downward to the right in FIG.

  When the lowering of the cutting blade 121 is completed, the fore edge pressing member 115 is raised to the initial position.

  After the rise of the fore edge pressure member 115 is completed, when the crease pressing member and the receiving plate (not shown) that sandwiched the vicinity of the fold portion b of the sheet bundle SS return to the initial positions, the fore edge pressure member 115 and the blade receiving plate 116 are raised. Then, the holding of the sheet bundle SS is released.

  By the series of operations described above, the edge cutting process for the sheet bundle SS is completed.

  FIG. 2 is a cross-sectional view of the cutting apparatus 100. FIG. 3 is an enlarged cross-sectional view of the cutting apparatus 100.

  The cutting device 100 cuts the edge portion a of the sheet bundle SS by the cutting blade 121 disposed below the conveyance path of the sheet bundle SS and the blade receiving plate 116 disposed above the conveyance path. The cutting blade 121 is fixed to a movable cutting blade holder 122. The cutting blade holder 122 is slidably held on the support plates 123A and 123B, and can be moved obliquely upward by driving means (not shown).

  As the cutting blade holder 122 moves obliquely upward, the cutting blade 121 is placed on the upper surface of the fixed support stand 127 and shears the small edge portion a of the sheet bundle SS pressed against the blade receiving plate 116.

  The blade receiving plate 116 is connected to connecting rods 114 </ b> A and 114 </ b> B that are swung by a driving source (not shown) to move up and down, press the sheet bundle SS placed on the upper surface of the fixed support stand 127, and The small edge portion a of the sheet bundle SS is sheared by coming into contact with the blade edge.

  One end of the cutting waste guide member 130 is adhered to the upper inclined surface of the cutting blade holder 122 with a double-sided tape or the like. An intermediate portion of the cutting waste guide member 130 covers the support plate 123A, the L-shaped member 123C, and the connecting member 125. Since the cutting waste guide member 130 covers the entire front side Bf (the left side in FIG. 2) of the post-processing apparatus B except for the replaceable cutting blade 121, the cutting waste guide member 130 has the cutting waste SB on these members. Prevents adhesion. Here, the cutting waste SB means not only a small piece of paper with a small edge portion a generated during the cutting process but also fine paper powder.

  The cutting waste guide member 130 may be made of a resin material such as nylon, PVC, PET, polycarbonate, or the like containing a conductive material such as carbon, metal, or metal oxide and processed into a sheet shape as a countermeasure against static electricity. Preferably, the conductive cutting waste guide member 130 is more preferably grounded. In addition to the above, as the conductive cutting waste guide member 130, a thin metal plate such as an aluminum alloy or stainless steel can also be used.

  The cut cutting waste SB falls from the cutting blade inclined surface and slides down along the smooth curved surface of the cutting waste guide member 130.

  In the vicinity of the cutting blade 121, a rotatable paddle unit 131 is arranged to lightly drop the cutting waste SB cut by the cutting blade 121. The paddle unit 131 includes a paddle shaft 132, a plurality of holding members 133 provided in the axial direction of the paddle shaft 132, and a plurality of paddles (blade plates) 134 provided respectively on the holding members 133.

  As shown in FIG. 4, the paddle shaft 132 is rotated by driving means including a motor M3. A plurality of holding members 133 are locked at a plurality of positions of the paddle shaft 132. A paddle 134 is attached to each holding member 133.

  The paddle 134 of the paddle unit 131 is formed of an elastic thin plate. For example, a thin plate of about 1 mm of polyurethane material.

  The tip of the paddle 134 of the paddle unit 131 does not contact the cutting edge of the cutting blade 121, but contacts the cutting edge 121 at the side surface close to the cutting edge. When the tip of the paddle 134 comes into contact with the cutting edge of the cutting blade 121, the paddle 134 is consumed quickly. Therefore, the paddle 134 is disposed at a position where it does not reach the cutting edge of the cutting blade 121.

  When the front end portion of the paddle 134 of the paddle unit 131 is rotated, the cutting scraps SB electrostatically attracted to the side surfaces of the cutting blade 121 are forcibly dropped by rubbing the side surfaces of the cutting blade 121.

  In the cutting apparatus of the present invention, when the edge of the booklet is cut, the paddle 134 is driven and rotated to drop the cutting waste SB and accommodate it in the lower cutting waste container 142, but the scraping force of the rotating paddle 134 Is too strong, the cutting waste SB that has once fallen is scattered and blown up, and may adhere to the members of the cutting apparatus 100 and cause malfunctions, or problems such as poor conveyance of the sheet bundle SS may occur. There is.

  In order to prevent the cutting waste SB from being blown up while ensuring the drop performance of the cutting waste SB, it is desirable to rotate the paddle 134 at an appropriate rotational speed.

  Further, by arranging the paddle 134 at a plurality of positions in the axial direction of the paddle shaft 132, the cutting waste SB can be accommodated for various paper sizes such as wide paper, A3 size, B4 size, A4 size, and B5 size. Can be scraped off.

  FIG. 4 is a plan view of the paddle unit 131 and the sheet bundle SS of various sizes to be cut.

  The paddles 134 attached to the holding member 133 are arranged at a plurality of locations (10 locations in the figure) in the width direction orthogonal to the transport direction. The plurality of paddles 134 are disposed to face a plurality of positions in the width direction of the edge portion a of the sheet bundle SS of various sizes.

  5A and 5B are a perspective view and a cross-sectional view of various post-processed sheet bundles SS. FIG. 5A is a perspective view of the sheet bundle SS that has been subjected to center folding and saddle stitching, and FIG. FIG. 5C is a perspective view of the sheet bundle SS that has undergone flat stitching, and FIG. 5D is a perspective view of the sheet bundle SS that has undergone gluing. In these drawings, a is a fore edge, b is a crease, c is a cutting line, SP is a binding needle, and d is an adhesive sticking part.

[Post-processing apparatus and image forming apparatus provided with cutting apparatus]
A post-processing apparatus B according to the present invention is a post-processing apparatus provided with a cutting apparatus 100, and the image forming apparatus is connected to an image forming apparatus main body A shown in FIG. An integrated image forming apparatus. It should be noted that the post-processing apparatus incorporating the cutting apparatus according to the present invention can be configured to be used alone. The post-processing apparatus and the image forming apparatus including the post-processing apparatus of the present invention are not limited to the following embodiments.

[Image forming device body]
FIG. 6 is an overall configuration diagram of an image forming apparatus including a post-processing apparatus B having the cutting apparatus 100 according to the present invention and an image forming apparatus main body A.

  The image forming apparatus includes an image forming apparatus main body A, an automatic document feeder DF, a post-processing apparatus B, and a large capacity sheet feeding apparatus LT.

  The illustrated image forming apparatus main body A includes an image reading unit 1, an image processing unit 2, an image writing unit 3, an image forming unit 4, a paper feeding cassette 5, a first paper feeding unit 6A, a second paper feeding unit 6B, a fixing unit. The apparatus 7 includes a paper discharge unit 8, an automatic double-sided copy paper supply unit (ADU) 8A, and the like.

  A post-processing device B having a cutting device 100 is connected to the paper discharge unit 8 side on the left side of the image forming apparatus main body A shown in the drawing.

  The operation unit 9 selects and sets processing functions of the image forming apparatus including the image forming apparatus main body A and the post-processing apparatus B.

  The main control unit 10A of the image forming apparatus main body A is connected to the post-processing control unit 10B of the post-processing apparatus B via the communication units 10C and 10D and the communication line 10E.

[Post-processing equipment]
FIG. 7 is a schematic diagram showing sheet conveyance in the half-folding and saddle stitching process of the post-processing apparatus B. FIG. 8 is a left side view of the post-processing apparatus B.

  As shown in FIGS. 7 and 8, when the bookbinding process of half-folding and saddle stitching is set in the operation unit 9, the sheet S discharged from the image forming apparatus main body A is input to the inlet 11 of the post-processing apparatus B. Introduced, pinched by the entrance roller 12, and conveyed to the paper conveyance path r1 below the conveyance path switching means G1.

  The sheet S conveyed to the sheet conveyance path r1 below the conveyance path switching unit G1 descends substantially vertically and is temporarily stopped and stored at a predetermined position. At the first stop position Q1, a plurality of subsequent sheets S are stacked and stored.

  The accommodated paper S is moved in a right angle direction by the transport roller pair 18A, 18B, the first transport roller pair 18C, 18D, and a guide plate (not shown), and the paper transport path wraps around the front side Bf inside the post-processing apparatus B. It passes r2 with the paper surface upright, and temporarily stops at the second stop position Q2.

  Next, the sheet S is conveyed vertically upward by the second conveying roller pair 18E, then deflected in the horizontal direction, and then moved along the sheet conveying path r3.

  The aligning means (not shown) is disposed on the downstream side of the sheet conveyance path r3 in the sheet conveyance direction, and is positioned by bringing the leading end of the sheet into contact with the sheet conveyance path r3, and temporarily stops at the third stop position Q3.

  On the downstream side of the aligning unit in the sheet conveyance direction, the center folding unit 30 is arranged. The middle folding means 30 is composed of a folding roller, a folding plate and the like, and performs a middle folding process.

  The signature SA that has been folded in half by the middle folding means 30 to form the fold portion b is returned to the original horizontal conveyance path. The signature SA is continuously conveyed by the conveying belt 41 of the conveying means 40, the conveying claw 42, and the introduction guide member 51 of the signature guide means 50 to the sheet conveying path r4 in the extension line direction of the fold portion b, and the saddle stitching means 60. Is sent to.

  In this way, the center folding means 30 performs a center folding process on a small number of one to three sheets S, firmly attaches the crease part b, and sequentially feeds it to the saddle stitching means 60, whereby the fold part b is swollen. It is possible to produce a sheet bundle SS with less.

  The signature SA that has been subjected to the middle folding process in the middle folding means 30 is advanced by the conveying means 40 in the direction of the paper conveying path r4 and is placed on the hook stacking means 61 of the saddle stitching means 60. The subsequent signature SA that has undergone the middle folding process continues to pass through the sheet transport path r4 and is stacked on the hook stacking means 61.

  The hook stacking means 61 is composed of two guide plates substantially orthogonal to each other, and is fixed to the main body of the post-processing apparatus B. In the vicinity of the top of the hook stacking means 61, a pressing member 61 </ b> A that can be lifted and lowered by a spring is supported by the needle receiving mechanism 64.

  The top portion of the pressing member 61A has a convex shape that is substantially perpendicular to the upper side, and the fold portion b of the signature SA that has been subjected to the middle folding process is placed on the top ridge line.

  The plurality of signatures SA placed on the hook stacking means 61 and the pressing member 61A are aligned by the width aligning means 62.

  A needle striking mechanism 63 is fixedly disposed above the pressing member 61A. Inside the hook stacking means 61, a pressing member 61A and a needle receiving mechanism 64 are supported so as to be movable in the vertical direction.

  Two sets of binding means having a two-part structure composed of the needle-striking mechanism 63 and the needle-receiving mechanism 64 are arranged in the direction of the sheet fold. When the saddle stitching process is set in the operation unit, the needle receiving mechanism 64 is raised to perform the saddle stitching process. That is, the two sets of binding means strike the binding needles SP at two places in the central distribution along the fold portion b of the signature SA on the pressing member 61A.

  The sheet bundle SS that has been subjected to the saddle stitching process in the saddle stitching means 60 is held by a support member 72 fixed to the distal end portion of the arm member 71 of the booklet taking-out means 70 and is swung in the direction of the one-dot chain line by the arm member 71. It is conveyed to the booklet conveying means 80.

  The sheet bundle SS transported to the booklet transport unit 80 is placed on the transport belt 82. The sheet bundle SS is conveyed obliquely downward by the rotation of the conveyance belt 82, and is further held in an inclined state, and is transported by the rotating conveyance belt 83 and stopped at a predetermined position. Thereafter, the conveyor belt 83 swings and is supported in a horizontal state.

  Since the fore edge a which is the free end opposite to the fold part b of the sheet bundle SS placed on the transport belt 83 in the horizontal state is uneven depending on the number of sheets in the sheet bundle SS, Cutting is performed by the cutting blade 121 and the blade receiving plate 116 of the cutting apparatus 100 of the present invention, and the fore edges a are aligned.

  The booklet SSS produced by the cutting process is placed on the transport belt 83 that rotates in the reverse direction, and is transported in a state where the rear end portion of the booklet SSS is pressed by the movable alignment member 84 fixed to the transport belt 83. It falls in the direction of the arrow from the tip of the belt 83. The fallen booklet SSS is discharged to a discharge tray 86 disposed outside the front side Bf of the post-processing apparatus B by a rotating discharge belt 85.

  A cutting waste processing unit 140 is disposed below the booklet conveying unit 80 and the cutting apparatus 100. The cutting waste SB having the cut end a cut by the cutting blade 121 and the blade receiving plate 116 of the cutting device 100 is dropped and transferred onto the rotating cutting waste transport belt 141 and accommodated in the cutting waste container 142. .

  In the embodiment of the present invention, the cutting device 100 of the post-processing apparatus B having the function of half-folding and saddle stitching connected to the copying machine main body has been described. The present invention can also be applied to a cutting device. Alternatively, the post-processing apparatus may be a sheet bundle manufacturing apparatus such as a glue binding apparatus.

  It is also possible to selectively connect a post-processing apparatus equipped with the cutting apparatus of the present invention to a bookbinding apparatus connected to a light printing machine, so that multi-purpose and multi-function post-processing can be processed consistently.

  The same effect can be obtained by applying to a post-processing apparatus used by connecting to an image forming apparatus such as a light printing machine, a printer, a facsimile machine, or a multifunction machine.

  In the above-described embodiment, the electrophotographic method is exemplified as the recording method. However, the recording method is not limited to this, and other recording methods such as an ink jet method may be used.

  Further, various types of folding processing, binding processing, and cutting processing can be performed as a single type of post-processing device separated from the image forming apparatus.

The principal part front view which shows the standby state of a cutting device, and a principal part side view. Sectional drawing of a cutting device. The expanded sectional view of a cutting device. The top view of a paddle and a sheet bundle of various sizes to be cut. The perspective view and sectional drawing of the various paper bundles which were post-processed. 1 is an overall configuration diagram of an image forming apparatus including a post-processing apparatus having a cutting apparatus according to the present invention and an image forming apparatus main body. The schematic diagram which shows the paper conveyance of the middle folding of a post-processing apparatus, and a saddle stitching process. The left view of a post-processing apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 9 Operation part 100 Cutting apparatus 110 Blade receiving member drive means 115 Small edge pressurizing member 116 Blade receiving plate 120 Cutting blade moving means 121 Cutting blade 122 Cutting blade holder 123A, 123B Support plate 124 Space | interval holding member 125 Connection member 127 Fixed support stand 130 Cutting waste guide member 131 Paddle unit 132 Paddle shaft 133 Holding member 134 Paddle (blade)
140 Cutting waste processing means A Image forming apparatus main body B Post-processing apparatus SS Paper bundle a Small edge

Claims (7)

In a cutting device that cuts and aligns the edge portion of a stack of sheets in which a plurality of sheets are stacked with a cutting blade,
A cutting device, wherein a rotatable paddle is disposed in the vicinity of the cutting blade, and the paddle is disposed at a position where a tip of the paddle slides on a side surface of the cutting blade when the paddle rotates. 2. The paddle is disposed at a position where a tip end portion of the paddle contacts a position of a side surface close to the cutting edge of the cutting blade without contacting a cutting edge of the cutting blade. The cutting apparatus described. The cutting apparatus according to claim 1 or 2, wherein the paddle is formed of an elastic thin plate. The cutting apparatus according to any one of claims 1 to 3, wherein the cutting apparatus includes a cutting blade that rises obliquely from below and a receiving plate that descends from above. In a post-processing device that aligns and binds multiple sheets of paper,
5. A post-processing apparatus comprising the cutting device according to claim 1, which cuts an edge portion of a bound sheet bundle. The post-processing device includes a folding unit that performs a folding process on a plurality of sheets and a binding unit that performs a saddle stitching process on a plurality of sheets, and is manufactured by performing the folding process and the saddle stitching process. The post-processing apparatus according to claim 5, wherein the edge portion of the sheet bundle is cut by the cutting apparatus to produce a bookbinding product. An image forming unit that forms an image on a sheet, and an edge portion of a sheet bundle produced by performing post-processing on a plurality of sheets on which an image has been formed by the image forming unit is cut by a cutting device to produce a bookbinding product. An image forming apparatus comprising: the post-processing device according to claim 5.

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