JP3787407B2 - Paper supply cartridge - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a paper feed cartridge set in a paper feed mechanism of various processing apparatuses.
[0002]
[Prior art]
In the case of various processing apparatuses, for example, a business printer, a recording paper roll that winds and stores a strip-shaped recording paper is used more than a cut sheet type because a large amount of processing is required.
[0003]
[Problems to be solved by the invention]
When the recording paper roll is set in a printer or the like, it is necessary to set the recording paper roll by placing the leading edge of the recording paper in the paper feeding roller after setting the recording paper roll in the paper feeding mechanism. Various types of automatic paper feed types are also provided to facilitate the setting, but there is a problem that the apparatus configuration becomes complicated.
[0004]
In the color thermal printer, color thermal recording paper is used, and a full color image is recorded in three-color plane order. This color thermosensitive recording paper has a cyan thermosensitive coloring layer, a magenta thermosensitive coloring layer, and a yellow thermosensitive coloring layer sequentially arranged on the base. The yellow thermosensitive coloring layer, which is the uppermost layer, has the highest thermal sensitivity and the lowest layer. The thermal sensitivity of the cyan thermosensitive coloring layer is the lowest. Each thermosensitive coloring layer is recorded in order from the top layer, but when recording the magenta thermosensitive coloring layer, a yellow fixing lamp is used after recording the yellow image so that the uncolored components in the yellow thermosensitive coloring layer do not color. Fix by irradiation with 420 nm purple visible rays. Similarly, after the recording of the magenta thermosensitive coloring layer, the magenta thermosensitive coloring layer is fixed by irradiating ultraviolet rays of 365 nm with a magenta fixing lamp.
[0005]
As described above, since color thermal recording paper uses color thermal recording paper, it has the advantage of not using an ink ribbon like a sublimation type thermal transfer printer, but has a light fixing property as described above and is stored in a light-shielded state. There is a need to. Further, since the color development 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 commercial color thermal printer, setting the recording paper for each print significantly impairs the operability. Therefore, it is desired to always set the recording paper in the printer. Similarly, a silver salt type photo printer is required to facilitate the setting of the recording paper roll, and the recording paper roll needs to be stored in a light-shielded state.
[0006]
SUMMARY An advantage of some aspects of the invention is that it provides a paper feed cartridge in which a recording paper roll can be easily set in various processing apparatuses. It is another object of the present invention to provide a paper feed cartridge that maintains light shielding and airtightness during storage.
[0007]
[Means for Solving the Problems]
To achieve the above objective, Of the present invention The paper feed cartridge is set in the paper feed mechanism of the processing unit and has a built-in recording paper roll. From the doorway In the paper supply cartridge to be supplied to the processing device, A cartridge case comprising a case body with a lid that is freely opened and closed via a hinge portion, a paper feed roller provided near the doorway in the cartridge case, and a roll support shaft attached to both ends of the recording paper roll A guide member that holds and moves the roll support shaft so that the outer peripheral surface of the recording paper roll always contacts the paper feed roller; and the recording paper roll that contacts the roll support shaft and feeds the recording paper roll. A pressing lever that is displaceable between a biasing position that biases the recording paper roll away from the roll support shaft and a retracted position that allows the recording paper roll to be removed from the guide member; and A biasing member that biases the roll support shaft toward the paper feed roller when in the position, and biases the roll support shaft toward the side that holds the retracted position when in the retracted position; With It is characterized by that.
[0011]
In addition, It is preferable that the holding lever is provided with an interlocking member that contacts the inner surface of the lid, and the interlocking member is displaced from the retracted position to the biasing position in conjunction with the displacement of the lid when the lid is closed. Also, A deformable interlocking member is provided between the interlocking member and the lid, and the pressing lever is displaced from the biasing position to the retracted position in conjunction with the displacement of the lid when the lid is opened by the deformation interlocking member. preferable. It is preferable that the deformation interlocking member is composed of any one of a toggle spring, a coil spring, a string, a chain, and a link mechanism.
[0012]
The feeding roller of the processing device rotates the paper feeding roller in the paper feeding direction to feed the belt-like recording paper of the recording paper roll from the entrance and exit, and the belt feeding roller rotates in the direction opposite to the paper feeding direction to record the belt-like recording paper. It is preferable to wind and store the paper roll.
[0013]
[Action]
The paper supply cartridge is set in various processing apparatuses, for example, a paper supply mechanism of a color thermal printer. A roll holder is accommodated in the cartridge case. A recording paper roll is rotatably held by the roll holder. Since the recording paper roll is guided through the guide member so that the outer peripheral surface thereof is always in contact with the paper feeding roller, when the paper feeding roller rotates, the recording paper roll also rotates, and the belt-like recording paper enters the color thermosensitive from the entrance / exit. Sent to the printer. Further, the belt-like recording paper is rewound into the cartridge case by rotating the paper feed roller in the direction opposite to the paper feed direction. The cartridge case includes a case main body and a lid, and a seal member is disposed between the case main body and the lid, and a shutter member is disposed at the entrance / exit, so that light shielding and airtightness are maintained.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
1 to 3 are perspective views showing a paper feed cartridge of the present invention. The paper feed cartridge 10 includes a cartridge case 11, a roll holder 12, and a paper feed roller 13 that is rotatably attached to the roll holder 12. A recording paper roll 14 is loaded into the paper feed cartridge 10 via a roll holder 12. The recording paper roll 14 is obtained by winding a strip-shaped recording paper 16 around a winding core 15.
[0015]
As shown in FIG. 3, the entire cartridge case 11 is formed in a cylindrical shape, and includes a case main body 17 and a lid 18. The case body 17 and the lid 18 are connected to each other via a hinge portion 19, and the lid portion 18 is opened about 150 degrees by the hinge portion 19. As shown in FIG. 4, a pedestal 17a is formed at the bottom of the case body 17, so that the cartridge case 11 does not roll unstably. The pedestal 17a is guided to the 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.
[0016]
As shown in FIG. 4, an entrance / exit 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 / exit 20. The shutter 21 is rotatably attached to the shutter cover 23 via an attachment shaft 22 so as to close and close the doorway 17b on the case body side from outside by a spring material (not shown). The shutter 21 is set from the closed position biased by the spring material to the open position 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 so as to cover it.
[0017]
As shown in FIG. 3, when the door 20 side of the case body 17 is viewed from the front, a grip 25 is formed integrally with the case body 17 at the left end of the case body 17. The grip 25 is formed in an L shape, and includes a grip portion 25 a parallel to the side plate 17 c of the case body 17 and a connecting portion 25 b that connects the grip portion 25 a to the case body 17.
[0018]
As shown in FIGS. 5 and 6, a lock mechanism 30 is provided in the connecting portion 25b. The lock mechanism 30 includes a lock block 31 and an insertion detection lever 32. The lock block 31 includes a lock pin 31a and a slide button 31b, and is disposed in the connecting portion 25b so as to be slidable between a retracted position (state shown in FIG. 5) and a lock position (state shown in FIG. 6). Yes. In the retracted position, the lock pin 31a is housed in the connecting portion 25b. Further, the lock pin 31a protrudes from the connecting portion 25b at the lock position. The lock block 31 is urged toward the lock position by the 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.
[0019]
The insertion detection lever 32 is rotatably attached to the connecting portion 25b via an attachment shaft 32b, and is urged toward the lock block 31 by a coil spring 34. The insertion detection lever 32 includes a locking portion 32a, and the locking portion 32a locks the lock pin 31a at the retracted position. In addition, the tip of the insertion detection lever 32 is formed to protrude outward 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 normal position, the leading end of the paper feed mechanism hits the lock release corner portion 36 of the paper feed mechanism, and the lock block 31 is unlocked. As a result, the lock pin 31a enters the lock hole 37 on the paper feed mechanism side, and the paper feed cartridge 10 cannot be removed from the paper feed mechanism 35, and the removal is restricted. When taking out 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, and various shapes can be used.
[0020]
As shown in FIGS. 2 and 4, a sealing groove 40 is formed on the lid 18 side at the mating surface of the case body 17 and the lid 18, and an O-ring 41 is used as a sealing material in the sealing groove 40. It is put. In addition, closing metal fittings 42 are attached to the upper portions of both ends of the case body 17. The closing metal fitting 42 is formed by bending a steel wire and is engaged with the engagement edge portions 43 at both ends of the lid 18.
[0021]
As shown in FIG. 2, a scraper 46 is attached in 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 body 17 near the entrance / exit 17 b of the case body 17, and includes a mounting bracket 47 and a scraper body 48. The scraper body 48 is composed of a thin synthetic resin sheet, and contacts the outer peripheral surface of the recording paper roll 14 when it rotates, scoops the leading edge of the strip-shaped recording paper 16 and guides it to the doorways 17b and 20b. To do. The tip of the scraper body 48 is formed in a triangular shape with a protruding central portion so that the tip of the recording paper can be reliably scraped off.
[0022]
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 includes a roll support shaft 50 and a holder main body 51.
[0023]
The roll support shaft 50 is fitted into both end openings of the winding 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 composed of a cylindrical body with a collar 52 a and is fitted to both ends of the winding core 15 of the recording paper roll 14. The cap 52 is made of a synthetic resin, and ribs 52b and 52c and bosses 52d and 52e are formed in order to reduce the weight while increasing the strength. The support roller 54 is also made of a cylindrical body with a synthetic resin flange 54a. The shaft member 53 is composed of a metal pin with a flange 53a, and is press-fitted into the fitting hole 52f of the cap 52 while holding the support roller 54 so as to be rotatable. Reference numeral 52 g denotes an air vent hole formed in the cap 52.
[0024]
As shown in FIG. 1, the holder body 51 is formed by bending a metal plate into a U-shape, and includes a base member 51a and a pair of side plates 51b and 51c provided at both ends of the base member 51a. It is configured. The interval between the side plates 51b and 51c is formed to be slightly wider 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. Roller support brackets 51d and 51e are provided on the front side of the holder main body 51 (the side facing the doorway 17b of the cartridge case 11). The roller support brackets 51d 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.
[0025]
As shown in FIG. 1, a rubber lining 56 is formed at the center of the paper feed roller 13, and this lining 56 reliably transmits the rotation of the paper feed roll 13 to the outer peripheral surface of the recording paper roll 14. A gear 57 is fixed to the shaft end of the paper feed roller 13 and meshes with the drive gear of the paper feed mechanism when the paper feed cartridge 10 is set in the paper feed mechanism.
[0026]
A pair of side plates 51b and 51c are formed with guide grooves 60 obliquely. As shown in FIG. 4, the guide groove 60 is formed long 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 when the recording paper roll 14 is consumed and its winding diameter is reduced, the roll support shaft 50 is guided by the guide groove 60, so that the outer peripheral surface of the recording paper roll 14 always contacts the paper feed roller 13. The rotation of the paper feed roller 13 is reliably transmitted to the recording paper roll 14.
[0027]
A pressing lever 61 is attached to the outer side surfaces of the pair of side plates 51b and 51c. The holding lever 61 urges the roll support shaft 50 toward the paper feed roller 13 in order to stably contact the outer peripheral surface of the recording paper roll 14 with the paper feed roller 13. The pressing lever 61 includes a lever body 61a formed in a triangular shape and an interlocking arm 61b extending from the lever body 61a, and via a mounting shaft 62 provided at one end of the lever body 61a. The side plates 51b and 51c are swingably attached. As shown in FIGS. 4 and 10, by this swinging, the pressing lever 61 urges the roll support shaft 50 toward the paper feed roller 13 and the urging position as shown in FIG. It is displaced between the retracted position rotated 120 degrees. 4 and 10, one side of the lever main body 61 a comes into contact with the support roller 54 and biases the support roller 54 toward the paper feed roller 13. Therefore, even if the remaining amount of the strip-shaped recording paper 16 is reduced, the recording paper 16 is reliably fed from the entrance / exit 20 to the paper feeding mechanism side by the paper feeding roller 13 as shown in FIG. In the retracted position shown in FIG. 12, the pressing lever 61 is separated from the guide groove 60, so that the recording paper roll 14 can be replaced. FIG. 12 shows a state in which a new recording paper roll 14 is set on the holder main body 51.
[0028]
As shown in FIG. 4, a spring mounting pin 63 is provided in the vicinity of the apex angle of the lever main body 61a, and a coil spring 64 is applied to this. The other end of the coil spring 64 is hung on a spring mounting bracket 65 that extends a part of the base plate 51a. The urging direction of the coil spring 64 is changed when the urging position shown in FIGS. 4, 10, and 11 is changed from the urging position shown in FIGS. At the urging position, the pressing lever 61 is urged clockwise as shown in FIGS. Further, when the pressing lever 61 rotates and the spring mounting pin 63 exceeds the extension line between the spring mounting bracket 65 and the lever mounting shaft 62, the biasing direction is switched counterclockwise, and the pressing lever 61 is pressed as shown in FIG. The lever 61 is urged toward the retracted position. As shown in FIG. 4, stoppers 66 and 67 for restricting the rotation of the pressing lever 61 are formed on the side plates 51b and 51c by notching and bending the side plates 51b and 51c.
[0029]
The interlocking arm 61b is formed in an arc shape, and as shown in FIG. 12, the hinge portion 19 is straddled when the lid 18 is opened. Thereby, the front-end | tip part 61c of the interlocking | linkage arm 61b is arrange | positioned so that it may approach near the inner surface of the lid | cover 18. As shown in FIG. 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 pressing lever 61 is automatically switched from the retracted position to the urging position in conjunction with the closing operation of the lid 18. It becomes a usable state as shown in FIG.
[0030]
FIG. 13 is a schematic view showing a color thermal printer 70 in which the paper feed cartridge 10 of the present invention is used. When a print start operation is performed, the feed motor 71 on the printer 70 side rotates to rotate the rollers 13, 72a, 73, 74a in the paper feeding direction. By this rotation, the leading edge of the recording paper 16 delivered from the paper supply roller 13 is guided to the entrance / exit 20 by the scraper 46.
[0031]
Immediately after the recording paper roll 14 is replaced with a new one, the recording paper leading edge 16a is set at the upper edge of the mounting bracket 47 of the scraper 46 as shown in FIG. Therefore, when the paper supply cartridge 10 is reloaded, the controller on the printer 70 side rotates the paper supply roller 13 in the rewinding direction and pulls it back to the position where the tip of the recording paper 16 is guided to the scraper 46. Thereafter, the recording paper 16 is sent out from the paper supply cartridge 10 by rotating the paper supply roller 13 in the paper supply direction.
[0032]
The recording paper 16 sent out from the paper supply cartridge 10 is sent out in the order of the paper supply roller pair 72, the thermal head 75 and the platen roller 73, the feed roller pair 74, the cutter 76, and the fixing device 77 to reciprocate the recording paper 16. Thus, a full-color image is recorded by three-color surface sequential recording.
[0033]
In the present embodiment, the gear ratio and the roller diameter are set so that the peripheral speeds of the paper feed roller 13 of the paper feed cartridge 10, the paper feed roller pair 72, the rollers 72a and 74a of the feed roller pair 74, and the platen roller 73 are the same. Is set, and when feeding in the paper feeding direction indicated by an arrow B, recording, fixing of each color of yellow, magenta, and cyan is performed. That is, the recording paper 16 delivered from the paper supply cartridge 10 is thermally recorded on the yellow thermal recording layer of the recording paper 16 by the thermal head 75. The thermally recorded yellow image recording area is optically fixed by the yellow fixing lamp 78 of the fixing device 77. When the light fixing is completed, the rollers 13, 72a, 74a and the platen roller 73 rotate in the direction opposite to the paper feeding direction. As a result, the recording paper 16 is fed in the pull-back direction indicated by the arrow C and pulled back into the paper feed cartridge 10. At this time, since the recording paper roll 14 is pressed against the paper supply roller 13, the recording paper 16 is reliably stored in the paper supply cartridge 10 by the reverse rotation of the paper supply roller 13.
[0034]
Next, the magenta image is thermally recorded in the image recording area where the yellow image is recorded. Further, the magenta thermosensitive coloring layer is fixed by the magenta fixing lamp 79 of the fixing device 77. When the fixing is completed, the recording paper 16 is pulled back in the same manner. Thereafter, the recording paper 16 is fed in the paper feeding direction, and a cyan image is thermally recorded. During cyan recording, the magenta fixing lamp 79 is lit, and the yellow-colored uncolored portion is bleached. When the planned cutting line is positioned at the cutter 76 after the cyan recording is finished, the cutter 76 is operated, and the recording paper 16 is cut by this planned line, and the strip-shaped recording paper 16 is cut into sheets. The separated sheet is discharged by a pair of discharge rollers (not shown). Thereafter, 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 pullback direction, and the unrecorded portion of the recording paper 16 is pulled back into the paper feed cartridge 10. Note that the pullback amount is determined in advance, so that the leading edge of the recording paper 16 is not returned past the paper feed roller 13.
[0035]
The recording paper roll 14 is exchanged 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. Thereafter, the paper feed cartridge 10 is pulled out from the paper feed mechanism 71. Next, after removing the closing metal fitting 42 from the locking edge 43 and opening the lid 18, as shown in FIG. 11, the holding lever 61 is raised by holding the distal end portion 61c of the interlocking arm 61b, and this is moved to the retracted position. Let Thereafter, the winding core 15 is taken out from the holder main body 51.
[0036]
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 front end of the recording paper of the recording paper roll 14 is peeled off, so that the front end 16a of the recording paper 16 is the upper edge of the scraper mounting bracket 47 as shown in FIG. After the recording paper roll 14 is rotated and positioned so as to be positioned at, the lid 18 is closed.
[0037]
When the lid 18 is closed, the interlocking arm 61b is pushed against the inner surface of the lid 18, so that the pressing lever 61 is set from the retracted position to the urging position, resulting in the state shown in FIG. Thereafter, as shown in FIG. 3, after the lid 18 is locked by the closing metal fitting 42, the paper feed cartridge 10 is inserted in the direction indicated by the arrow C, and this is set in the paper feed mechanism 35. When the paper feed cartridge 10 is set at the normal position, as shown in FIG. 6, the insertion detection lever 32 hits the locking release corner 36 on the paper feed mechanism 35 side, so that the lock pin 31a is moved from the retracted position to the lock position. The paper feed cartridge 10 is locked so that it cannot be removed. When the recording paper 16 is consumed and lost, this is detected by a sensor (not shown), and an alarm for replacing the recording paper is issued to the operator. In this case, the slide button 31b is slid to the unlock position to bring the lock device into the unlocked state as shown in FIG.
[0038]
In the above-described embodiment, only when the lid 18 is closed, the pressing lever 61 is set from the retracted position to the biased position in conjunction with the closing operation of the lid 18. As shown, a coil spring 85 may be provided between the lid 18 and the pressing lever 61, and the pressing lever 61 may be set from the biased position to the retracted position in conjunction with the operation of opening the lid 18. In addition, the same code | symbol is attached | subjected to the same structural member as the said embodiment. In this case, the holding lever 61 can be set from the biased position to the retracted position in conjunction with the lid 18 by the coil spring 85 simply by opening the lid 18 as shown in FIG. Therefore, as soon as the lid 18 is opened, the winding 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 pressing lever 61 may be interlocked using a toggle spring, string, chain, link mechanism, or the like.
[0039]
In the above embodiment, the side plate is used as the guide member. 51b, 51c The guide groove 60 formed by cutting out the guide groove 60 is used. Alternatively, a guide member may be configured by providing a guide rail or a guide protrusion on the side plate.
[0040]
In the above embodiment, the paper supply cartridge 10 for the color thermal printer is used. However, the present invention may be applied to a paper supply cartridge for photographic paper for a silver salt type photographic printer. In addition, the present invention may be applied to a normal plain paper feed cartridge that does not require light shielding or moisture proofing. In this case, the recording paper roll can be easily set in various processing devices such as a printer in a one-touch manner. In addition, it is possible to reliably feed out the recording paper.
[0041]
【The invention's effect】
According to the present invention, a roll holder that rotatably holds a recording paper roll, a cartridge case that stores the roll holder, and a paper feed roller provided in the cartridge case near the entrance / exit, the roll holder is provided. A roll support shaft attached to both ends of the recording paper roll, and a holder main body for rotatably holding the roll support shaft. The holder main body includes an outer peripheral surface of the recording paper roll on the paper feed roller. Since the guide member for guiding the roll support shaft to the paper feed roller side is provided so as to be always in contact, the belt-like recording paper can be reliably sent out of the cartridge case from the recording paper roll. Moreover, since the recording paper is fed out by contact between the paper feed roller and the recording paper roll, the recording paper is always kept at a constant speed regardless of the winding diameter even if the recording paper roll is consumed and the winding diameter of the recording paper roll is reduced. Can be sent out. Therefore, the paper feed mechanism on the processing apparatus side using the paper feed cartridge and the paper feed roller can always be linked, and the paper feed control on the paper feed mechanism side can be simplified.
[0042]
A cap for fitting the roll support shaft to both ends of the winding core of the recording paper roll, a shaft member attached to the cap, and a support roller rotatably attached to the shaft member between the shaft member and the cap Since the support roller is inserted into the guide groove of the holder body, the recording paper roll can be smoothly guided to the paper feeding roller side, and the recording paper roll can be held rotatably. .
[0043]
Since the cap and the support roller are made of synthetic resin and the shaft member is made of metal, the cost can be reduced while reducing the weight. Also, the roller support shaft can be easily assembled by pressing the shaft member into the cap and press-fitting the cap into the cap with the support roller rotatably fitted.
[0044]
The holder main body is composed of a base member and a pair of side plates provided at both ends of the base member, and the guide member is composed of a guide groove formed long in the side plate toward the paper feed roller side, The structure of the holder body can be simplified. Further, the holder main body is constructed by bending the metal plate and integrating the base member and the side plate, thereby providing strength while reducing the weight. In addition, since the roller support bracket for supporting the paper feed roller is integrally formed on the base member, the assembly accuracy of the paper feed roller can be increased and the assembly accuracy can be increased.
[0045]
The holder body has an urging means for urging the recording paper roll toward the paper feeding roller, so that the paper feeding roller always contacts the recording paper roll stably, so that the recording paper can be fed out reliably and accurately. Can do.
[0046]
The pressing lever mounted on the side plate via the mounting shaft and the biasing member that biases the pressing lever toward the paper feed roller constitute the biasing means, and the pressing lever is fed to the roll support shaft by the biasing member. Since it is configured to be displaceable between an urging position for urging the paper roller side and a retreat position so that the roll support shaft can be removed from the guide groove away from the guide groove, the recording paper roll is set in the guide groove. Then, the recording paper roll can be reliably pressed toward the paper feed roller in the guide groove.
[0047]
Since the cartridge case is composed of a case body and a lid, and the lid can be freely opened and closed via the hinge portion, the lid can be easily opened and closed. In addition, since a seal member is arranged between the case body and the lid, and a shutter member is arranged at the doorway, the recording paper roll can be securely shielded from moisture and moisture-proof, so that color thermal recording materials and color photographic paper can be used. It becomes the most suitable for paper feeding.
[0048]
The holding lever is attached to the side plate via the mounting shaft, and the urging means is composed of a tension coil spring. When the holding lever is in the urging position, this tension spring urges the roll support shaft toward the paper feed roller and retracts. By urging to the side that holds the retracted position when it is in the position, the pressing lever can be reliably set to both the urging position and the retracted position. Can be reliably delivered.
[0049]
The holding lever is provided with an interlocking member that contacts the inner surface of the lid, and this interlocking member automatically moves when the lid is closed by displacing the pressing lever from the retracted position to the biased position in conjunction with the displacement of the lid when the lid is closed. Since the pressing lever is set at the biased position, the recording paper roll can be easily set.
[0050]
By providing a deformable interlocking member that can be deformed between the interlocking member and the lid, and by interlocking with the displacement of the lid when the lid is opened by this deformation interlocking member, the pressing lever is displaced from the biased position to the retracted position, When the lid is opened, the holding lever is automatically set to the retracted position, so that the recording paper roll can be easily set. In particular, by configuring the deformation interlocking member from any one of a toggle spring, a coil spring, a string, a chain, and a link mechanism, the configuration is simplified.
[0051]
The feeding roller of the processing device rotates the paper feeding roller in the paper feeding direction to feed the belt-like recording paper of the recording paper roll from the entrance and exit, and the belt feeding roller rotates in the direction opposite to the paper feeding direction to record the belt-like recording paper In the case of a color thermal printer that performs three-color surface sequential recording by reciprocating the recording paper by winding and storing it on a paper roll, the recording paper is wound and stored in the cartridge as it is without being stored in a loop shape. This eliminates the need for a looper and simplifies the configuration. Further, when the printing operation is finished, the recording paper can be wound and stored in the paper supply cartridge, and the recording paper can be easily stored.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view showing a main part of a paper feed cartridge according to 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 where a cartridge case is closed.
4 is an enlarged cross-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 the lock mechanism.
FIG. 7 is a front view showing a roll support shaft.
8 is a cross-sectional view corresponding to the line VIII-VIII in FIG. 7 in a state in which the roll support shaft is disassembled into parts.
FIG. 9 is a back view showing a roll support shaft.
FIG. 10 is a cross-sectional view of the paper feed cartridge showing a state immediately before the recording paper is used up.
FIG. 11 is a cross-sectional view of the paper feed cartridge showing a state where a lid is opened to refill recording paper.
FIG. 12 is a cross-sectional view of the paper feed cartridge showing a state where a new recording paper roll is set.
FIG. 13 is a schematic diagram showing a color thermal printer using a paper feed cartridge.
FIG. 14 is a cross-sectional view of the sheet feeding cartridge showing another embodiment in which the lid and the pressing lever are interlocked using a coil spring and showing a state in the middle of opening the lid.
FIG. 15 is a cross-sectional view of the paper feed cartridge showing a state where the lid is completely opened in the embodiment.
[Explanation of symbols]
10 Paper feed cartridge
11 Cartridge case
12 Roll holder
13 Paper feed roller
14 Recording paper roll
15 roll core
16 Strip recording paper
17 Case body
17a doorway
18 lid
19 Hinge part
20 Doorway
21 Shutter
25 grip
30 Locking mechanism
31a Lock pin
42 Closing bracket
46 Scraper
50 Roll support shaft
51 Holder body
52 cap
53 Shaft member
54 Support roller
60 Guide groove
61 Holding lever

Claims (4)

In a paper feed cartridge that is set in the paper feed mechanism of the processing device and supplies the recording paper roll of the built-in recording paper roll to the processing device from the doorway ,
A cartridge case consisting of a case body with a lid that can be freely opened and closed via a hinge portion;
A paper feed roller provided near the doorway in the cartridge case;
A guide member that holds roll support shafts attached to both ends of the recording paper roll, and guides the roll support shaft so that the outer peripheral surface of the recording paper roll is always in contact with the paper feed roller;
Between an urging position where the recording paper roll is urged toward the paper feed roller side in contact with the roll support shaft, and a retreat position where the recording paper roll can be removed from the guide member away from the roll support shaft. With a freely displaceable holding lever,
And a biasing member that biases the roll support shaft toward the paper feed roller when the pressing lever is in the biasing position, and biases toward the side that holds the retracting position when the pressing lever is in the retracting position. Paper cartridge to be used. An interlocking member that contacts the inner surface of the lid is provided on the pressing lever, and the pressing lever is displaced from the retracted position to the biasing position in conjunction with the displacement of the lid when the lid is closed by the interlocking member. Item 2. The paper feed cartridge according to Item 1 . A deformable interlocking member is provided between the interlocking member and the lid, and the pressing lever is displaced from the urging position to the retracted position in conjunction with the displacement of the lid when the lid is opened by the deformation interlocking member. 3. The paper feed cartridge according to claim 2, wherein 4. The paper feed cartridge according to claim 3 , wherein the deformation interlocking member is formed of any one of a toggle spring, a coil spring, a string, a chain, and a link mechanism.

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