JPH10291350A - Paper feed cartridge - Google Patents

Abstract

PROBLEM TO BE SOLVED: To set simply a recording paper roll in various kinds of processors and keep lightproofness and airtightness at the time of storage. SOLUTION: A cartridge case provided with lightproofness and airtightness is constituted of a case main body 17 and a cover. A holder main body 51 is installed in the case main body 17. A paper feed roller 13 and a pair of guide channels 60 are provided in the holder main body 51. The guide channels 60 are formed longer toward the paper feed roller 13. Roll supporting shafts 50 are inserted on both ends of a core 15 of the recording paper roll 14. Roll supporting shafts 50 are put into the channels 60. A press lever 61 is urged by a coil spring 64 to press the roll supporting shaft 50 to the side of the paper feed roller 13. Even when the core diameter becomes small by the consumption of recording papers 16, the recording papers 16 can be fed at the constant speed at all times. The holder main body 51 is constituted integrally by folding a metal plate.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to a paper feed cartridge set in a paper feed mechanism of various processing apparatuses.

[0002]

2. Description of the Related Art In the case of various processing apparatuses, for example, printers for business use, recording paper rolls which take up and store band-shaped recording paper are used more often than cut sheet type paper because of the necessity of mass processing. .

[0003]

When the recording paper roll is set on a printer or the like, the recording paper roll is set on a paper feeding mechanism, and then, the leading edge of the recording paper is held by the paper feeding roller. There is a need. In addition, various automatic paper feed types are provided to make setting easier,
There is a problem that the device configuration becomes complicated.

In a color thermal printer, a color thermal recording paper is used, and a full-color image is recorded sequentially in three color planes. In this color thermosensitive recording paper, a cyan thermosensitive coloring layer, a magenta thermosensitive coloring layer, and a yellow thermosensitive coloring layer are sequentially provided on a base. The yellow thermosensitive coloring layer, which is the uppermost layer, has the highest thermal sensitivity and the lowermost layer. Is the lowest heat sensitivity of the cyan thermosensitive coloring layer. Each thermosensitive coloring layer is recorded in order from the uppermost layer, but during recording of the magenta thermosensitive coloring layer, a yellow fixing lamp is used after the yellow image is recorded so that uncolored components in the yellow thermosensitive coloring layer do not develop color. 42
It is fixed by irradiating it with a violet visible ray of 0 nm. Similarly, after recording of the magenta thermosensitive coloring layer, the magenta thermosensitive coloring layer is fixed by irradiating 365 nm ultraviolet rays from a fixing lamp for magenta.

As described above, a color thermal printer uses color thermal recording paper, and thus has the advantage of not requiring the use of an ink ribbon unlike a sublimation type thermal transfer printer. However, since it has light fixing properties as described above, it has a light shielding property. It must be saved in a state. Further, since the coloring characteristics also change due to a change in humidity, it is preferable to store in a sealed state. In particular, in the case of a color thermal printer for business use, operability is significantly impaired if the recording paper is set for each print. Therefore, it is desired to always set the recording paper in the printer. Similarly, in a silver halide photographic printer, there is a demand for facilitating the setting of a recording paper roll, and the recording paper roll needs to be stored in a light-shielded state.

An object of the present invention is to solve the above-mentioned problems, and an object of the present invention is to provide a paper feed cartridge which enables a recording paper roll to be easily set in various processing apparatuses. Still another object of the present invention is to provide a paper feed cartridge that retains light-shielding properties and airtightness during storage.

[0007]

According to a first aspect of the present invention, there is provided a paper feed cartridge which is set in a paper feed mechanism of a processing apparatus, and feeds a band-shaped recording paper from a built-in recording paper roll. A paper supply cartridge supplied to the processing apparatus through a roll holder for rotatably holding a recording paper roll, a cartridge case for housing the roll holder, and a paper supply roller provided in the cartridge case near the entrance. Wherein the roll holder comprises a roll support shaft attached to both ends of the recording paper roll, and a holder main body rotatably holding the roll support shaft, wherein the holder main body includes the paper feed roller. And a guide member for guiding the roll support shaft toward the paper feed roller so that the outer peripheral surface of the recording paper roll is always in contact.

[0008] The roll support shaft is provided with a cap fitted to both ends of a core of a recording paper roll, a shaft member attached to the cap, and a shaft member rotatable between the shaft member and the cap. It is preferable to comprise a supporting roller to be attached. It is preferable that the cap and the support roller are made of synthetic resin, and the shaft member is made of metal and has a flange to prevent the support roller from falling off. Further, the collar of the shaft member serves as a fingerhold when removing the roll support shaft from the winding core.

The holder body comprises a base member and a pair of side plates provided at both ends of the base member, and the guide member is formed by a guide groove formed on the side plate so as to extend toward the paper feed roller. It is preferable to configure. Also,
It is preferable that the holder body is formed by integrating a base member and a side plate by bending a metal plate, and that the base member is integrally formed with a roller support bracket for supporting the paper feed roller. Further, it is preferable that the holder main body has an urging means for urging the recording paper roll toward the paper feed roller.
The urging means includes a pressing lever attached to the side plate via a mounting shaft, and an urging member for urging the pressing lever toward the paper feed roller, and the pressing lever is rolled by the urging member. It is preferable that the roll supporting shaft is freely displaceable between a biasing position for biasing the support shaft toward the paper feed roller and a retracted position so that the roll support shaft can be taken out of the guide groove apart from the guide groove.

It is preferable that the cartridge case comprises a case body and a lid, and the lid is freely opened and closed via a hinge. Preferably, a seal member is arranged between the case body and the lid, and a shutter member is arranged at the entrance.

The press lever is attached to the side plate via an attachment shaft, and the urging means is constituted by a tension coil spring. When the press lever is at the urging position, the roll support shaft is moved to the feed roller side by the tension coil spring. It is preferable that when the retracted position is at the retracted position, it is biased toward the side that holds the retracted position. It is preferable that an interlocking member is provided to the holding lever, and the interlocking member moves the holding lever from the retracted position to the biasing position in conjunction with the displacement of the lid when the lid is closed. Further, a deformable interlocking member is provided between the interlocking member and the lid, and the pressing lever is displaced from the biased position to the retracted position in conjunction with the displacement of the lid when the lid is opened by the deformed interlocking member. Is preferred. It is preferable that the deformation interlocking member is constituted by any of a toggle spring, a coil spring, a string, a chain, and a link mechanism.

The paper feed roller of the processing device rotates the paper feed roller in the paper feed direction to feed the band-shaped recording paper of the recording paper roll from the entrance and exit, and rotates the paper feed roller in the direction opposite to the paper feed direction to form the band-shaped recording paper. The paper is preferably wound up and stored on a recording paper roll.

[0013]

The paper feed cartridge is set in a paper feed mechanism of various processing devices, for example, a color thermal printer. A roll holder is housed in the cartridge case. The roll holder holds a recording paper roll rotatably. The recording paper roll is guided via a guide member such that the outer peripheral surface thereof is always in contact with the paper feeding roller, so that when the paper feeding roller rotates, the recording paper roll also rotates, and the band-shaped recording paper is heated by the color heat from the entrance. Sent to the printer. By rotating the paper feed roller in the direction opposite to the paper feed direction, the band-shaped recording paper is rewound into the cartridge case. The cartridge case is composed of a case main body and a lid, and since a seal member is arranged between the case main body and the lid, and a shutter member is arranged at the entrance and exit, light shielding and airtightness are maintained.

[0014]

1 to 3 are perspective views showing a sheet supply cartridge according to the present invention. Paper feed cartridge 1
0 is a cartridge case 11 and a roll holder 12
And a paper feed roller 13 rotatably attached to the roll holder 12. A recording paper roll 14 is loaded into the paper supply cartridge 10 via a roll holder 12. The recording paper roll 14 has a core 15
The recording paper 16 is wound up.

As shown in FIG. 3, the cartridge case 1
1 is formed in a cylindrical shape as a whole,
And a lid 18. Case body 17 and lid 1
8 is connected via a hinge 19, and the hinge 18 allows the lid 18 to open about 150 degrees. As shown in FIG. 4, a pedestal 17a is formed at the bottom of the case
Is not rolling unsteadily. The pedestal 17a is guided by a rail on the paper feed mechanism side when the paper feed cartridge 10 is inserted into the paper feed mechanism in the direction of arrow A in FIG.

As shown in FIG. 4, an entrance 20 for the recording paper 16 is formed on the front side of the case body 17, and a shutter 21 is attached to the entrance 20.
The shutter 21 is rotatably attached to a shutter cover 23 via an attachment shaft 22 so as to close and close the entrance 17b on the case body side from outside by a spring material (not shown). Then, the shutter 21 is set to the open position from the closed position urged by the spring material by the shutter opening / closing member on the paper feed mechanism side. The shutter cover 23 is attached to the front side of the case body 17 and covers the shutter 21.

As shown in FIG. 3, a grip 25 is formed integrally with the case main body 17 at the left end of the case main body 17 when the entrance 20 side of the case main body 17 is viewed from the front. The grip 25 is formed in an L shape, and has a grip portion 25a parallel to the side plate 17c of the case body 17.
And a connecting portion 25b for connecting the grip portion 25a to the case body 17.

As shown in FIGS. 5 and 6, the connecting portion 25b
Inside, a lock mechanism 30 is provided. Lock mechanism 3
Reference numeral 0 denotes a lock block 31 and an insertion detection lever 32. The lock block 31 includes the lock pin 3
1a and a slide button 31b, and are slidably disposed in the connecting portion 25b between a retracted position (the state shown in FIG. 5) and a locked position (the state shown in FIG. 6). At the retracted position, the lock pin 31a is stored in the connecting portion 25b. In the lock position, the lock pin 31a protrudes from the connecting portion 25b. The lock block 31 is biased toward the lock position by a coil spring 33 so as to always protrude from the connecting portion 25b. As shown in FIG. 3, the slide button 31b protrudes from the upper surface of the connecting portion 25b.

The insertion detecting lever 32 is rotatably mounted in the connecting portion 25b via a mounting shaft 32b, and is urged toward the lock block 31 by a coil spring 34. The insertion detection lever 32 has a locking portion 32a, and locks the lock pin 31a at the retracted position with the locking portion 32a. Further, the tip of the insertion detection lever 32 is formed to protrude outside from the connecting portion 25b. Therefore, when the paper feed cartridge 10 is inserted into the paper feed mechanism of the color thermal printer to the proper position, the tip of the paper feed mechanism comes into contact with the unlocking corner 36 of the paper feed mechanism, and the lock of the lock block 31 is released. Thereby, the lock pin 31
a enters the lock hole 37 on the paper feed mechanism side, the paper feed cartridge 10 cannot be pulled out from the paper feed mechanism 35, and the removal is restricted. When removing the paper supply cartridge 10 from the paper supply mechanism, the slide button 31b is pulled back to the locking position to release the lock, and in this state, the paper supply cartridge 10 is removed from the paper supply mechanism. The lock block 31 and the insertion detection lever 32 are not limited to those shown in the drawings, but may be of various shapes.

As shown in FIG. 2 and FIG.
A sealing groove 40 is formed on the mating surface of the cover 7 and the cover 18 on the cover 18 side.
Is formed, and an O-ring 41 is inserted into the seal groove 40 as a seal material. In addition, closing fittings 42 are attached to upper portions of both ends of the case main body 17. The closing fitting 42 is formed by bending a steel wire, and is to be locked to locking edges 43 at both ends of the lid 18.

As shown in FIG. 2, a scraper 46 is attached to the inside of the case main body 17 by an attachment screw 44. As shown in FIG. 4, the scraper 46 is attached to the inside of the case main body 17 near the entrance 17b of the case main body 17, and includes a mounting bracket 47 and a scraper main body 48. The scraper body 48 is made of a thin synthetic resin sheet. When the recording paper roll 14 rotates, the scraper body 48 comes into contact with the outer peripheral surface thereof, scoops up the leading end of the strip-shaped recording paper 16, and guides it to the entrances 17 b and 20. I do. The tip of the scraper body 48 is formed in a triangular shape with a central portion protruding so that the leading edge of the recording paper can be reliably scooped.

As shown in FIG. 1, the roll holder 12 is mounted in the case main body 17 by mounting screws 45. The roll holder 12 is provided with a roll support shaft 50.
And a holder main body 51.

The roll support shaft 50 is fitted into both ends of the core 15 of the recording paper roll 14. The roll support shaft 50 includes a cap 52, a shaft member 53, and a support roller 54, as shown in FIGS. The cap 52 is formed of a cylindrical body with a brim 52a, and is fitted to both ends of the core 15 of the recording paper roll 14. The cap 52 is made of a synthetic resin, and the ribs 52b and 52c are used to increase the strength and reduce the weight.
And bosses 52d and 52e are formed. Support roller 5
Reference numeral 4 also comprises a cylindrical body with a collar 54a made of synthetic resin. The shaft member 53 is composed of a pin with a metal collar 53a, and is rotatably holding the support roller 54 and is pressed into the fitting hole 52f of the cap 52. Note that reference numeral 5
2 g is an air vent hole formed in the cap 52.

As shown in FIG. 1, the holder main body 51 is formed by bending a metal plate into a U-shape, and includes a base member 51a and one end provided at both ends of the base member 51a.
It is composed of a pair of side plates 51b and 51c. The interval between the side plates 51b and 51c is formed slightly larger than the width of the recording paper roll 14, so that the recording paper roll 14 can be easily set on the holder main body 51. A roller support bracket 51 is provided on the front side of the holder body 51 (the side facing the entrance 17b of the cartridge case 11).
d and 51e are provided. Roller support bracket 5
1d and 51e are formed by bending a part of the base plate 51a. The paper feed roller 13 is rotatably attached to the roller support brackets 51d and 51e.

As shown in FIG. 1, a rubber lining 56 is formed at the center of the paper feed roller 13, and this lining 56 controls the rotation of the paper feed roll 13 to the recording paper roll 1.
4 is reliably transmitted to the outer peripheral surface. A gear 57 is fixed to the shaft end of the paper feed roller 13 and meshes with a drive gear of the paper feed mechanism when the paper feed cartridge 10 is set in the paper feed mechanism.

A guide groove 60 is formed diagonally on the pair of side plates 51b and 51c. As shown in FIG. 4, the guide groove 60 is formed longer toward the paper feed roller 13, and guides the support roller 54 of the roll support shaft 50 toward the paper feed roller 13. Therefore, even if the recording paper roll 14 is consumed and its winding diameter is reduced, the guide groove 6
0, the roll support shaft 50 is guided.
3 is always in contact with the outer peripheral surface of the recording paper roll 14, and the rotation of the paper feed roller 13 is reliably transmitted to the recording paper roll 14.

A holding lever 61 is attached to the outer surfaces of the pair of side plates 51b and 51c. The holding lever 61 moves the outer peripheral surface of the recording paper roll 14 to the feed roller 1.
The roller support shaft 50 is urged toward the paper feed roller 13 in order to stably contact the roller 3. This holding lever 61
It is composed of a triangular lever main body 61a and an interlocking arm 61b extending from the lever main body 61a, and is attached to the side plates 51b and 51c via a mounting shaft 62 provided at one end of the lever main body 61a. It is mounted swingably. Due to this swinging, the holding lever 61 biases the roll support shaft 50 toward the paper feed roller 13 as shown in FIGS. 4 and 10, and the biasing position as shown in FIG. From the evacuation position rotated by 120 degrees. In the biasing position shown in FIGS. 4 and 10, one side of the lever main body 61 a contacts the support roller 54 and biases the support roller 54 toward the paper feed roller 13. Accordingly, even if the remaining amount of the band-shaped recording paper 16 becomes small, the recording paper 16 is reliably sent out from the entrance 20 by the paper feeding roller 13 to the paper feeding mechanism side as shown in FIG. Also,
In the retracted position shown in FIG. 12, the press lever 61 is separated from the guide groove 60, so that the recording paper roll 14 can be replaced. FIG. 12 shows a state where a new recording paper roll 14 is set in the holder main body 51.

As shown in FIG. 4, a spring mounting pin 63 is provided near the apex angle of the lever main body 61a, and a coil spring 64 is hung on this pin. The other end of the coil spring 64 is hung on a spring mounting bracket 65 extending a part of the base plate 51a. The urging direction of the coil spring 64 changes when the pressing lever 61 changes from the urging position shown in FIGS. 4, 10 and 11 to the retracted position shown in FIG. In the biasing position, the holding lever 61 is biased clockwise as shown in FIGS. Further, when the holding lever 61 rotates and the spring mounting pin 63 crosses the extension line between the spring mounting bracket 65 and the lever mounting shaft 62, the biasing direction is switched counterclockwise, and as shown in FIG. Lever 6
1 is urged to the retreat position side. As shown in FIG.
Stoppers 66, 67 for restricting rotation of the holding lever 61 are formed on the side plates 51b, 51c by cutting out and bending a part of the side plates 51b, 51c.

The interlocking arm 61b is formed in an arc shape so that the hinge 19 can be straddled when the lid 18 is opened as shown in FIG. Thus, the distal end portion 61c of the interlocking arm 61b is arranged so as to approach near the inner surface of the lid 18. Therefore, when the operation of closing the lid 18 is performed, the inner surface of the lid 18 pushes the tip of the interlocking arm 61b, and the holding lever 61 is automatically switched from the retracted position to the biased position in conjunction with the closing operation of the lid 18, The state becomes usable as shown in FIG.

FIG. 13 shows a sheet feeding cartridge 10 according to the present invention.
FIG. 1 is a schematic diagram showing a color thermal printer 70 in which is used. When the print start operation is performed, the feed motor 71 of the printer 70 rotates and the rollers 13, 72a, 7
3, 74a is rotated in the paper feeding direction. By this rotation, the leading end of the recording paper 16 sent from the paper feed roller 13 is guided to the entrance 20 by the scraper 46.

Immediately after the recording paper roll 14 is replaced with a new one, as shown in FIG.
Is set at the upper end edge of the mounting bracket 47 of the scraper 46. Therefore, when the paper supply cartridge 10 is reloaded, the printer 7
The controller on the 0 side rotates the paper feed roller 13 in the rewinding direction to return the leading end of the recording paper 16 to a position where the recording paper 16 is guided by the scraper 46. Thereafter, the paper feed roller 13 is rotated in the paper feed direction, and the recording paper 16 is sent out from the paper feed cartridge 10.

The recording paper 16 delivered from the paper supply cartridge 10 is supplied to the paper supply roller pair 72, the thermal head 75 and the platen roller 73, the feed roller pair 74, and the cutter 7.
6. The fixing device 77 is sent out in this order, and the recording paper 16 is reciprocated, so that a full-color image is recorded by three-color surface sequential recording.

In this embodiment, the paper feed roller 13, the paper feed roller pair 72, and the feed roller pair 74 of the paper feed cartridge 10 are used.
The roller ratio and the roller diameter are set so that the peripheral speeds of the rollers 72a and 74a and the platen roller 73 are the same, and the yellow, magenta, and cyan colors Is recorded and fixed. That is, the recording paper 16 sent from the paper supply cartridge 10 is thermally recorded on the yellow thermosensitive recording layer of the recording paper 16 by the thermal head 75. The heat-recorded yellow image recording area is light-fixed by a yellow fixing lamp 78 of a fixing device 77. When the optical fixing is completed, the rollers 13, 72a, 74a and the platen roller 73 rotate in the direction opposite to the sheet feeding direction. As a result, the recording paper 16 is fed in the retraction direction shown by the arrow C,
Pull it back into the paper supply cartridge 10. At this time, since the recording paper roll 14 is pressed against the paper supply roller 13, the recording paper 16 is securely stored in the paper supply cartridge 10 by the reverse rotation of the paper supply roller 13.

Next, a magenta image is thermally recorded in the image recording area where the yellow image is recorded. In addition, the fixing device 7
The magenta fixing layer 79 fixes the magenta heat-sensitive coloring layer. When the fixing is completed, the recording paper 16
Is pulled back. Thereafter, the recording paper 16 is fed in the paper feeding direction, and the cyan image is thermally recorded. Also during cyan recording, the magenta fixing lamp 79 is turned on, and the uncolored portion having a yellow tint is bleached. When the scheduled cutting line is positioned on the cutter 76 after the end of the cyan recording, the cutter 76 operates, the recording paper 16 is cut at the scheduled line, and the belt-shaped recording paper 16 is cut into sheets. The separated sheet is discharged by a discharge roller pair (not shown). Hereinafter, each image is recorded on the recording paper 16 in the same manner. When the printing operation is completed, the paper feed roller 13 rotates in the retraction direction,
The unrecorded portion of the recording paper 16 is pulled back into the paper supply cartridge 10. The amount of pullback is determined in advance, so that the leading edge of the recording paper 16 does not return past the paper feed roller 13.

The replacement of the recording paper roll 14 is performed as follows. When pulling out the paper feed cartridge 10 from the paper feed mechanism 71, the slide button is moved from the lock position in FIG. 6 to the release position in FIG.
5b. After that, the paper feed cartridge 10 is pulled out from the paper feed mechanism 71. Next, after the closing fitting 42 is removed from the locking edge 43 and the lid 18 is opened, as shown in FIG. 11, the holding lever 61 is raised by holding the distal end 61c of the interlocking arm 61b, and is moved to the retracted position. Let it. Thereafter, the winding core 15 is removed from the holder main body 51.

The roll support shaft 50 is removed from the winding core 15 and replaced with a new unused recording paper roll 14.
Next, the recording paper roll 14 is set in the guide groove 60 in the holder main body 51. Next, the loosening prevention tape 80 (see FIG. 1) attached to the leading end of the recording paper roll 14 is peeled off, and as shown in FIG.
After the recording paper roll 14 is rotated and positioned so that a is positioned at the upper edge of the scraper mounting bracket 47, the lid 18 is closed.

When the lid 18 is closed, the interlocking arm 61b is pressed against the inner surface of the lid 18, so that the pressing lever 61 is set from the retracted position to the biased position, and the state shown in FIG. 4 is obtained. Thereafter, as shown in FIG.
After the lock of the sheet feeder 8, the sheet feed cartridge 10 is inserted in the direction indicated by the arrow C, and is set in the sheet feed mechanism 35. When the paper feed cartridge 10 is set at the proper position, as shown in FIG. 6, the insertion detection lever 32 hits the unlocking corner 36 on the paper feed mechanism 35 side.
1a is moved from the retracted position to the locked position, and locked so that the sheet supply cartridge 10 cannot be removed. When the recording paper 16 is consumed and exhausted, this is detected by a sensor (not shown), so that an alarm for replacing the recording paper is issued to the operator. In this case, after the slide button 31b is slid to the unlock position to put the lock device in the unlocked state as shown in FIG. 5, the paper feed cartridge is removed from the paper feed mechanism 71.

In the above embodiment, only when the cover 18 is closed, the holding lever 6 is linked to the closing operation of the cover 18.
1 was set from the retracted position to the biased position,
In addition, as shown in FIGS. 14 and 15, a coil spring 85 is provided between
The holding lever 61 may be set from the biased position to the retracted position in conjunction with the operation of opening the cover. The same components as those in the above embodiment are denoted by the same reference numerals. In this case, the holding lever 61 can be set from the biased position to the retracted position by the coil spring 85 only by performing the operation of opening the lid 18 as shown in FIG. Therefore, as soon as the lid 18 is opened, the core 15 can be taken out from the roll holder 12, and the usability is improved. Instead of using the coil spring 85, the lid 18 and the holding lever 61 may be linked with each other using a toggle spring, a string, a chain, a link mechanism, or the like.

In the above embodiment, the guide groove 6 formed by cutting out the side plates 52b and 52c as a guide member.
Although 0 is used, a guide member may be formed by providing a guide rail or a guide ridge on the side plate.

In the above embodiment, the paper supply cartridge 10 for a color thermal printer is used. However, the present invention may be applied to a photographic paper paper supply cartridge for a silver halide photographic printer. Further, the present invention may be applied to a paper supply cartridge for ordinary plain paper that does not require light shielding or moisture proofing. In this case, the recording paper roll can be easily set in one-touch type in various processing devices such as a printer. Can be
In addition, the recording paper can be reliably sent out.

[0041]

According to the present invention, there is provided a roll holder for rotatably holding a recording paper roll, a cartridge case for accommodating the roll holder, and a paper feed roller provided in the cartridge case near the entrance. The roll holder comprises a roll support shaft attached to both ends of the recording paper roll, and a holder main body rotatably holding the roll support shaft, and the holder main body includes a recording medium on the paper feed roller. Since the guide member for guiding the roll support shaft toward the paper feed roller is provided so that the outer peripheral surface of the paper roll is always in contact, the belt-shaped recording paper can be reliably sent out of the cartridge case from the recording paper roll. Moreover, since the recording paper is sent out by the contact between the paper feed roller and the recording paper roll, even if the band-shaped recording paper is consumed and the winding diameter of the recording paper roll is reduced, the recording paper is always kept at a constant speed regardless of the winding diameter. Can be sent out. Therefore, the paper feed mechanism of the processing apparatus using the paper feed cartridge and the paper feed roller can always be linked, and the paper feed control of the paper feed mechanism can be simplified.

A roll support shaft is mounted on both ends of the core of the recording paper roll, a shaft member mounted on the cap, and a shaft member rotatably mounted between the shaft member and the cap. And the supporting roller is inserted into the guide groove of the holder body, so that the recording paper roll can be smoothly guided to the paper feeding roller side and the recording paper roll is rotatably held. be able to.

Since the cap and the support roller are made of synthetic resin and the shaft member is made of metal, the weight can be reduced and the cost can be reduced. In addition, the roller support shaft can be easily assembled by press-fitting the support roller into the cap with the shaft member fitted with a collar and rotatably fitted.

The holder body is constituted by a base member and a pair of side plates provided at both ends of the base member, and the guide member is constituted by a guide groove formed on the side plate so as to extend toward the paper feed roller. Thus, the configuration of the holder main body can be simplified. Furthermore, the holder body
By bending the metal plate to integrate the base member and the side plate, it is possible to increase the strength while reducing the weight. In addition, since the roller support bracket for supporting the paper feed roller is formed integrally with the base member, the paper feed roller can be easily assembled and the assembly accuracy can be improved.

Since the holder body has an urging means for urging the recording paper roll toward the paper feeding roller side, the paper feeding roller always comes into stable contact with the recording paper roll, so that the recording paper can be reliably and precisely formed. Can be sent out well.

An urging means is constituted by a pressing lever attached to the side plate via an attaching shaft, and an urging member for urging the pressing lever toward the paper feeding roller, and the pressing lever is supported by the urging member in a roll. The guide groove of the recording paper roll is configured to be freely displaceable between an urging position for urging the shaft toward the paper feed roller and a retracted position so that the roll support shaft can be taken out of the guide groove apart from the guide groove. And the pressing of the recording paper roll toward the paper feed roller in the guide groove can be reliably performed.

Since the cartridge case is composed of a case body and a lid, and the lid can be opened and closed via a hinge,
The lid can be easily opened and closed. Furthermore, since a seal member is arranged between the case body and the lid, and a shutter member is arranged at the entrance and exit, light-shielding and moisture-proof of the recording paper roll can be reliably performed. It becomes the most suitable for feeding paper.

The holding lever is attached to the side plate via the mounting shaft, and the urging means is constituted by a tension coil spring. When the holding lever is in the urging position, the tension spring urges the roll support shaft toward the paper feed roller. Then, when it is in the retracted position, it is urged to the side that holds the retracted position,
The pressing lever can be reliably set at both the urging position and the retracted position, and the setting of the recording paper roll and the feeding of the recording paper can be reliably performed.

The holding lever is provided with an interlocking member that comes into contact with the inner surface of the lid, and the interlocking member moves the holding lever from the retracted position to the biasing position in conjunction with the displacement of the lid when the lid is closed, thereby opening the lid. When closed, the press lever is automatically set to the biasing position, so that the setting of the recording paper roll can be simplified.

A deformable interlocking member is provided between the interlocking member and the lid, and the pressing lever is displaced from the biased position to the retracted position in conjunction with the displacement of the lid when the lid is opened by the deformable interlocking member. Thus, when the cover is opened, the press lever is automatically set to the retracted position, so that the setting of the recording paper roll is simplified. In particular, the configuration is simplified by configuring the deformation interlocking member from any of a toggle spring, a coil spring, a string, a chain, and a link mechanism.

The paper feed roller of the processing apparatus rotates the paper feed roller in the paper feed direction to feed the band-shaped recording paper of the recording paper roll from the entrance, and rotates the paper feed roller in the direction opposite to the paper feed direction to form the band-shaped recording paper. In the case of a color thermal printer in which recording paper is rolled up and stored in a recording paper roll, and the recording paper is reciprocated to sequentially record three color planes, the recording paper is wound into a cartridge without being stored in a loop. Since it can be stored and stored, a looper or the like is not required, and the configuration is simplified. Further, when the printing operation is completed, the recording paper can be wound up and stored in the paper feed cartridge, thereby facilitating storage of the recording paper.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing a main part of a paper feed cartridge of the present invention.

FIG. 2 is a perspective view showing a state where a cartridge case is opened.

FIG. 3 is a perspective view showing a state in which a cartridge case is closed.

FIG. 4 is an enlarged sectional view taken along line IV-IV in FIG.

FIG. 5 is a plan view showing an unlocked state of the lock mechanism.

FIG. 6 is a plan view showing a locked state of a lock mechanism.

FIG. 7 is a front view showing a roll support shaft.

FIG. 8 is a cross-sectional view corresponding to the line VIII-VIII in FIG. 7 in a state where the roll support shaft is disassembled into components.

FIG. 9 is a rear view showing the roll support shaft.

FIG. 10 is a cross-sectional view of the sheet supply cartridge showing a state immediately before the recording paper is used up.

FIG. 11 is a cross-sectional view of the sheet supply cartridge showing a state where a cover is opened to refill recording paper.

FIG. 12 is a cross-sectional view of the sheet supply cartridge showing a state where a new recording sheet roll is set.

FIG. 13 is a schematic view showing a color thermal printer using a paper feed cartridge.

FIG. 14 is a cross-sectional view of a sheet feeding cartridge according to another embodiment in which a lid and a holding lever are interlocked by using a coil spring, showing a state in which the lid is being opened.

FIG. 15 is a cross-sectional view of the sheet supply cartridge showing a state where a cover is completely opened in the embodiment.

[Explanation of symbols]

 REFERENCE SIGNS LIST 10 paper feed cartridge 11 cartridge case 12 roll holder 13 paper feed roller 14 recording paper roll 15 core 16 belt-shaped recording paper 17 case body 17 a doorway 18 lid 19 hinge part 20 doorway 21 shutter 25 grip 30 lock mechanism 31 a lock pin 42 closing fitting 46 Scraper 50 Roll support shaft 51 Holder body 52 Cap 53 Shaft member 54 Support roller 60 Guide groove 61 Press lever

Claims (14)

[Claims] 1. A paper feed cartridge which is set in a paper feed mechanism of a processing device and supplies a band-shaped recording paper from a built-in recording paper roll to a processing device via an entrance and exit, wherein the recording paper roll is rotatably held. A roll holder, a cartridge case for accommodating the roll holder, and a paper feed roller provided in the cartridge case near the entrance, wherein the roll holder comprises a roll support shaft attached to both ends of the recording paper roll. A holder body rotatably holding the roll support shaft. The holder body has the roll support shaft on the paper feed roller side such that the outer peripheral surface of the recording paper roll always contacts the paper feed roller. A sheet feeding cartridge provided with a guide member for guiding the sheet. 2. A cap fitted to both ends of a roll core of a recording paper roll, a shaft member attached to the cap, and a shaft member rotated between the shaft member and the cap. 2. The paper feed cartridge according to claim 1, further comprising a support roller that is freely attached. 3. The cap and the support roller are made of synthetic resin, and the shaft member is made of metal and has a flange.
3. The support roller is prevented from falling off.
Paper feed cartridge as described. 4. A guide wherein the holder body comprises a base member and a pair of side plates provided at both ends of the base member, and wherein the guide member is formed on the side plate so as to extend toward the paper feed roller. 4. The sheet feeding cartridge according to claim 1, wherein the sheet feeding cartridge is constituted by a groove. 5. The holder body is formed by bending a metal plate to integrate the base member and the side plate, and a roller support bracket for supporting the paper feed roller is integrally formed on the base member. The paper feed cartridge according to claim 4, wherein 6. The paper feed cartridge according to claim 4, wherein the holder main body has an urging means for urging the recording paper roll toward the paper feed roller. 7. The pressing means comprises a pressing lever attached to the side plate via a mounting shaft, and an urging member for urging the pressing lever toward the paper feed roller, wherein the pressing lever comprises: It is characterized in that it can be freely displaced between an urging position where the urging member urges the roll support shaft toward the paper feed roller and a retracted position where the roll support shaft can be taken out of the guide groove apart from the guide groove. The paper feed cartridge according to claim 6, wherein 8. The paper feed cartridge according to claim 1, wherein the cartridge case comprises a case body and a lid, and the lid is opened and closed via a hinge. 9. The paper feed cartridge according to claim 8, wherein a seal member is disposed between the case body and the lid, and a shutter member is disposed at the entrance. 10. The cartridge case includes a case main body, a lid, and a hinge portion for opening and closing the lid to the case main body, and a seal member is disposed between the case main body and the lid, A shutter member is arranged at the entrance, the holding lever is attached to the side plate via an attachment shaft, and the urging means is constituted by a tension coil spring. When the holding lever is at the urging position, the roll supporting shaft The sheet feeding cartridge according to claim 7, wherein the sheet feeding roller is urged toward the sheet feeding roller, and is urged toward the side that holds the retreat position when the retraction position is at the retreat position. 11. An interlocking member for contacting an inner surface of a lid is provided on the holding lever, and the interlocking member moves the holding lever from a retracted position to a biased position in conjunction with displacement of the lid when the lid is closed. The paper feed cartridge according to claim 10, wherein: 12. A deformable interlocking member is provided between the interlocking member and the lid. The deformable interlocking member interlocks with the displacement of the lid when the lid is opened, and moves the holding lever from the biased position to the retracted position. 2. The apparatus according to claim 1, wherein
The paper feed cartridge according to 1. 13. The sheet feeding cartridge according to claim 12, wherein said deformation interlocking member is formed by any one of a toggle spring, a coil spring, a string, a chain, and a link mechanism. 14. A paper feed roller of the processing device rotates a paper feed roller in a paper feed direction to feed a band-shaped recording paper of a recording paper roll from an entrance and exit, and rotates the paper feed roller in a direction opposite to the paper feed direction. 14. The paper feeding cartridge according to claim 1, wherein the recording paper roll is wound around a recording paper roll and stored.