JP5350032B2 - Sheet storage device and recording device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sheet storage part capable of favorably guiding the front end of a sheet to an abutting surface, and improving sheet stacking performance. <P>SOLUTION: This sheet storage device storing the sheet S discharged by a discharging means includes a receiving member 12 receiving the discharged sheet S, a first abutting surface locking the front end of the sheet S supported by the receiving member 12, a second abutting surface 19 movable between a lock position locking the front end of the sheet S supported by the receiving member 12 and a retreat position not locking it between the discharging means and the first abutting surface, and a guide surface 18 guiding the front end of the sheet S to the second abutting surface 19 by guiding the surface of the discharged sheet S on the side facing the receiving member 12 when the second abutting surface is located at the lock position. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a sheet storage device for storing sheets discharged from a recording device or the like, and more particularly to a sheet storage device suitable for stacking large format sheets such as A0 and A1, and a recording device using the same.

  There exists a thing described in patent documents 1 as a sheet storage device. In the sheet storage device of Patent Document 1, a sheet receiving surface formed of cloth or a thin resin material is provided, and sheets are stacked on the sheet receiving surface.

  A roll-shaped sheet has a wrinkle (hereinafter referred to as a curl wrinkle) that is curled and rounded. In order to guide the leading edge of the sheet that floats from the sheet receiving surface due to the curl, a belt-like guide member is provided at a position facing the sheet receiving surface. Further, in order to stack sheets of a plurality of sizes, the belt-shaped guide member is provided with an abutting member for restraining the front end of the sheet so as to be slidable in the belt length direction.

  When stacking sheets on the sheet storage device, first, the front end of the sheet hangs down toward the sheet storage device provided below the recording device. The front end of the seat stops when it hits the abutting member. The sheet in this state is supported by the discharge guide, the abutting member, and the sheet receiving surface, and a predetermined loop is formed around the middle between the sheet front end and the cutting position. When the rear end of the sheet is cut here, the reaction force or inertia force of the sheet generated by forming the loop acts so as to drop the rear end of the sheet from the upper end of the sheet storage portion toward the lower end. It is held when it hangs down from the sheet storage unit. By repeating this, a plurality of sheets were stacked and stacked. Furthermore, sheets of different sizes can be stacked by changing the position of the abutting member.

JP 2007-145459 A

  In order to stably stack the sheets, it is necessary to guide the front end of the sheet with the sheet receiving surface and the belt-shaped guide member, and reliably restrain the sheet with the abutting member. If this is not possible, it will not be possible to form a predetermined loop necessary for stacking sheets, and it will not be possible to apply the reaction force and inertial force required to hang the trailing end of the sheet from the sheet storage portion to the outside. This causes paper jams, poor loading, and the like.

  In the prior art (see FIG. 6), a sheet receiving member 51 formed of a cloth or a thin resin material, and a belt-shaped guide member 52 are provided so as to face the sheet receiving member. I was guiding. The abutting member 53 is configured by a gentle slope whose belt-shaped guide member side is higher than the sheet receiving member side. Since the sheet receiving member 51 and the strip-shaped guide member 52 are thin materials, the processing accuracy varies. Furthermore, when the belt-shaped guide member 52 stores a sheet having a large reaction force due to the curl wrinkles, the belt-shaped guide member 52 may be displaced due to the reaction force of the sheet. Furthermore, the abutting member 53 is slidably provided on the belt-shaped guide member 52, and the positional deviation is also caused by sliding the abutting member 53.

  As a result, the variation in the mounting position accuracy of the sheet receiving member 51 and the belt-shaped guide member 52 increases, and a gap 55 is generated between the sheet receiving member 51 and the abutting member 53.

  Sheets to be stacked are roll-shaped sheets, and there is always a curl hook. The amount of curl wrinkles (hereinafter referred to as curl amount) varies greatly between the outside of the winding (a place far from the paper tube) and the inside of the winding (a place near the paper tube) even with one roll.

  When such a roll-shaped sheet is stopped by the abutting member 53 having a predetermined slope, as described above, if there is a gap 55 between the abutting member 53 and the sheet receiving member 51, the front end of the sheet is a gap. May invade.

  Specifically, as shown in FIG. 6A, since the roll sheet S has curl wrinkles, the front end of the sheet contacts the abutting member 53 even if there is a slight gap 55. However, the abutting member 53 of the prior art has a low inclination on the gap side, which causes the front end of the sheet not to be picked up and enters the gap 55. This makes it impossible to stably stack sheets.

  Further, even if the front end of the sheet can be stopped by the abutting member 53, when the curl amount is large, in the process of forming a predetermined loop near the center of the sheet, a loop 57 as shown in FIG. Enters the gap 55 with the sheet receiving member 51. Then, the loop 57 grows in the gap 55. In this case, the alignment of the sheets stacked on the sheet storage unit is impaired, and the storage quality deteriorates. Furthermore, since the storage state of the sheet is not stable, the sheet may overflow from the storage unit, and the print surface may come into contact with the floor or the like and be damaged.

  The present invention has been made based on the recognition of the above-described problems, and aims to further improve the conventional apparatus. A more specific object of the present invention is to provide a sheet storage device capable of reliably guiding the leading end of the sheet to the abutting surface and improving the stackability of the sheet, and a recording apparatus having the sheet storage device.

The configuration of the present invention that achieves the above object is as follows.
A sheet storage device for storing the discharged sheets by the discharge means, a receiving member for receiving the sheet discharged, a first abutment surface for engaging the leading end of the sheet is supported by the receiving member, Between the discharge means and the first abutment surface, a second abutment that is movable between a latching position for latching a leading end of the sheet supported by the receiving member and a retracted position that is not latched. When the surface and the second abutting surface are in the locking position, the leading edge of the sheet is guided to the second abutting surface by guiding the surface of the discharged sheet facing the receiving member. A sheet storage device having a guide surface.

  According to the present invention, it becomes possible to satisfactorily guide the leading edge of the sheet to the abutting surface, and the sheet stacking property is improved.

The figure which shows the state in which the butting member was accommodated. The figure which shows the place where the 1st size sheet | seat is stacked on the sheet storage apparatus. The figure which shows the state which the butting member opened. The figure which shows the place where the small sized sheet | seat is stacked on the sheet storage apparatus. The figure which shows the state which accommodated the sheet | seat storage apparatus. The figure which shows the conventional sheet storage apparatus.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  In FIG. 1, reference numeral 200 denotes an ink jet recording apparatus that performs recording on a large recording sheet. Reference numeral 300 denotes a stand for holding the recording apparatus 200, and 100 denotes a sheet storage apparatus equipped in the recording apparatus 200.

  The recording apparatus 200 is an apparatus that records an image on a roll sheet, which is a continuous recording material, and a roll-shaped sheet 1 before recording is held by a roll-shaped sheet holding member 2 therein. As the material of the sheet, various materials can be used as long as they can record an image, such as paper, a plastic sheet, photographic printing paper, and leather.

  When recording on the roll sheet 1, the feeding roller pair 3 is rotated to feed the sheet to the conveying roller 4, and the conveying roller pair 4 is further rotated to be conveyed to the platen 5 which is a printing area. Ink is ejected from the recording head 6 onto a sheet supported by the platen 5 to record an image.

  The recording head 6 serving as a recording unit records an image (including characters and symbols) on a recording material based on image information. In the case of an ink jet type, a plurality of discharge heads based on image information is recorded. Recording is performed by discharging ink from the outlet onto the sheet.

  The conveyance roller pair 4 conveys the sheet intermittently. The recording head 6 is held by a carriage, and the carriage reciprocates in a direction perpendicular to the sheet conveyance direction. When the conveyance of the sheet by the conveyance roller pair 4 is stopped, the recording head 6 scans in the sheet width direction by the carriage, and simultaneously discharges ink to perform recording. The recording head 6 performs recording on the surface that was outside when the roll-shaped sheet was wound.

  Recording for a predetermined recording width by the recording head 6 and conveyance by a predetermined distance by the conveyance roller pair 4 are alternately performed, and the recorded sheet is discharged from the sheet discharge port 7 to the outside of the apparatus little by little. Further, when the recording of one image is completed, a portion corresponding to the rear end of the image of the sheet S is cut by the cutter 9 disposed inside the discharge port 7 and sent out from the discharge port 7. A paper discharge guide 8 for guiding the discharged sheet is provided in the vicinity of the discharge port 7.

  Reference numeral 100 denotes a sheet storage device for storing and holding a recorded sheet S discharged by a discharge unit including a conveyance roller pair 4 and a discharge guide 8. The sheet storage apparatus 100 is disposed below the discharge guide 8 of the recording apparatus 200 and is supported by being connected to a stand 300.

  The sheet storage device includes a sheet receiving member 12 that forms a sheet receiving surface on which sheets S are stacked and held. The sheet receiving member 12 is a cloth or resin sheet, one end of which is fixed near the sheet abutting surface 15 (first abutting surface) of the sheet guide member 10, and the other end is supported by the stay 24 at both ends. Held by the shaft 23. Furthermore, the vicinity of the other end is supported by the rod-like member 11 held at both ends by the stay 24, and is held with a predetermined tension.

  The sheet storage device 100 is provided with a sheet guide member 10 that opposes the sheet receiving member 12 and guides the front end of the sheet S that hangs down from the end of the discharge guide 8.

  A plurality of sheet guide members 10 are provided in the sheet width direction, and are provided at predetermined positions corresponding to the sheet size to be discharged so as to guide the vicinity of both side end portions of the sheet. In the present invention, the sheet sizes stacked by the sheet storage device are A1 (24 inches × 36 inches) and A0 (36 inches × 48 inches). For this reason, the sheet guide member regulates the reference side guide member for regulating the reference side end portion of the sheet, the A1 non-reference side end guide member for regulating the non-reference side end portion of A1, and the non-reference side end portion of A0. Three locations of the A0 non-reference side end guide member are provided. In the present invention, the number of sheet guide members is not limited to three, and a plurality of sheet guide members may be provided according to the sheet size to be stacked.

  The space between the sheet guide member 10 and the sheet receiving member 12 is configured to be wide near the upper discharge port 7 and narrow near the sheet abutting surface 15 of the lower sheet guide member 10.

  In the sheet guide member 10, a plurality of abutting members 16 that lock the end portions of the sheets S are arranged so as to be accommodated in the sheet guide member. Specifically, it is provided in three places. Furthermore, the abutting members provided at the three locations are connected by a rod-shaped member 17 that is a shaft member, and can rotate integrally around the rod-shaped member 17 as an axis. The sheet abutting member 16 can move at two positions corresponding to the size of the sheets stacked on the sheet storage device 100 by rotating around the rod-shaped member 17. When stacking large sized sheets, it is used at the retracted position retracted inside the sheet guiding member 10 (FIG. 1), and when storing small sized sheets, it is used between the sheet receiving member 12 and the sheet guiding member 10. (Fig. 3).

  In the present embodiment, the large size sheet is A0 or 36 inches × 48 inches, and the small size sheet is A1 or 24 inches × 36 inches. In the present invention, the stackable sheet size is not limited to the above, and the length and shape of the sheet guide member 10 and the sheet receiving member 12 and the mounting position of the sheet abutting member 16 are changed. Accordingly, sheet sizes other than those described above can be accommodated.

  Here, the sheet abutting member 16 will be described in detail. As shown in FIG. 3, the sheet abutting member 16 is opened and used only when a small size sheet is stacked. The sheet abutting member 16 is provided with a sheet guide surface 18 that guides the leading edge of the sheet S to the abutting surface 19 (second abutting surface) and the abutting surface 19 so as to be approximately orthogonal to each other. The sheet guide surface 18 guides the surface of the sheet S on the side facing the sheet receiving member 12. Further, the sheet abutting member 16 is provided with a curl pressing surface 22 (second guiding surface) that presses the curl at the front end of the sheet so as to face the sheet guiding surface 18 so as to intersect the abutting surface 19. Yes. The abutting surface 19, the sheet guide surface 18, and the curl pressing surface 22 protrude from the sheet guide member 10 only when the abutting member 16 is opened. When the abutting member 16 is opened, the end portion of the sheet guide surface 18 on the sheet receiving member 12 side is higher than the end portion on the sheet guide member 10 side, and the end portion on the sheet receiving surface 12 side is directed toward the abutting surface 19. And is configured to guide the sheet downward.

  Next, the operation of the sheet S when the sheet S is stacked on the sheet storage device 100 having the above configuration will be described. First, with reference to FIGS. 1 and 2, the case where the sheet size to be stacked is A0 which is a large size or 36 inches × 48 inches will be described. In this case, the sheet abutting member 16 is housed in the sheet guide member 10. As shown in FIG. 1, the front end of the sheet S is sent from the discharge port 7 and guided along the discharge guide 8, and then hangs down from the end of the discharge guide 8 toward the sheet storage device 100. Further, the front end of the sheet S continues to hang down along the sheet guide member 10 while being in contact with the receiving surface of the sheet receiving member 12, and the leading end is restrained by the abutting surface 15 provided on the sheet guide member 10. Thereafter, as shown in FIG. 2A, the sheet S is conveyed until it reaches a predetermined length while being supported by the shaft 23, the rod-shaped member 11 and the sheet receiving surface 12, and the rod-shaped member 11 is moved by the rigidity and inertial force of the sheet. As a fulcrum, the loop 21 is formed by slackening in the direction of arrow A. When image formation is completed in a predetermined sheet area, the sheet S is cut into a predetermined size by the cutter 9 in the recording apparatus 200. As shown in FIG. 2B, the rear end of the cut sheet S falls in the direction of the arrow B, and reverses and hangs down with the rod-shaped member 11 as a fulcrum. Further, when recording is continuously performed, the operations shown in FIGS. 1, 2A, and 2B are repeated, and the previously recorded sheets are placed downward and stacked in order.

  Next, with reference to FIG. 3 and FIG. 4, a description will be given of a case where recording is performed on a small-size sheet of A1 or 24 inches × 36 inches and stacked.

  First, the sheet abutting member 16 is rotated around the shaft 17 in accordance with the small size sheets stacked on the sheet storage device 100 so as to be positioned at the restriction position between the sheet receiving member 12 and the sheet guiding member 10. Put out. As a result, the sheet guide surface 18, the sheet abutting surface 19, and the curl pressing surface 22 integrally formed with the sheet abutting member 16 are moved to the projecting position. At this time, the leading end portion of the sheet guide surface 18 is in contact with or close to the sheet receiving surface of the sheet receiving member 12. In the present embodiment, the close state is preferably a case where the gap between the sheet receiving surface and the front end portion of the sheet guide surface 18 is 15 mm or less. This is to prevent the sheet from entering the gap even if the sheet has a small curl amount due to unwinding of the roll or the like. In the present invention, the gap is not limited to 15 mm or less, and may be 15 mm or more as long as the sheet does not enter the gap due to curling at the leading edge of the sheet.

  Next, the operation of the sheet S when the sheet S is stacked will be described. As shown in FIG. 3, the front end of the sheet S is sent out from the discharge port 7 and guided along the discharge guide 8, and then hangs down from the end portion of the discharge guide 8 toward the sheet storage device 100. Further, the lower end of the sheet S continues to hang down along the sheet guide member 10, is guided by the sheet guide surface 18 provided on the sheet abutting member 16, and is locked when the front end abuts the abutting surface 19. The Thereafter, as shown in FIG. 4A, the sheet S is conveyed until it reaches a predetermined length, and is slackened in the direction of the arrow A due to the rigidity and inertial force of the sheet S, and the rod-shaped member 11 and the sheet receiving surface 12. As a support, a loop 21 is formed. When image formation is completed in a predetermined sheet area, the sheet S is cut into a predetermined size by the cutter 9 in the recording apparatus 200. The rear end of the cut sheet S falls in the direction of arrow B as shown in FIG. 4 (B), and is inverted and drooped with the rod-shaped member 11 as a fulcrum. Further, when recording is continuously performed, the operations shown in FIGS. 3, 4A, and 4B are repeated, and the previously recorded sheets are placed downward and stacked in order.

  Since the sheet S is a roll-shaped sheet, there is a curl wrinkle. Furthermore, the curl amount varies greatly depending on the roll state, such as when the roll is unwound or inside. In this embodiment, in order to reliably hold the sheet S having a significantly different curl amount against the abutting surface 19 in this embodiment, the curl holding surface 22 is opposed to the sheet guide surface 18 at the sheet abutting member 16. Provided. The curl holding surface 22 guides a surface of the sheet opposite to the surface guided by the sheet guide surface 18. As a result, the front end of the sheet with the curled ridges that abuts against the abutting surface 19 is sandwiched between the curl pressing surface 22 and the sheet guide surface 18, and is difficult to come off from the abutting surface 19.

  As described above, according to the present embodiment, it is possible to stably store a large number of sheets of at least two sizes by opening and closing the sheet abutting member 16 according to the size of the sheet to be stored.

  Further, the sheet storage device 100 has a structure that can be stored so that the installation space can be reduced when not in use. This structure will be described with reference to FIGS. First, the case where the sheet storage apparatus 100 is used will be described with reference to FIG. When the sheet storage device 100 is used, the stay 24 supported by the stand 300 near the bottom of the recording device 200 so as to be swingable about the hinge 24 </ b> A is pulled out in a direction away from the discharge port 7. The sheet receiving member 12 and the bar-shaped member 11 are located at positions protruding from the discharge guide 8 of the recording apparatus 200 in the discharge direction. The rod-like member 13 is held in a state in which it is loosely fitted in a groove 24 c at the tip of a support arm 24 b attached to the stay 24.

  The rod-shaped member 11 is at a higher position than the rod-shaped member 23. In addition, a guide member 25 that is rotatably supported by a hinge 25a is disposed on the upper portion of the sheet guide member 10. The guide member 25 is in an upright position when the sheet storage device is used. The guide member 25 is urged by a hinge spring 25b in a direction to rotate counterclockwise about the hinge 25a, and is positioned at a substantially upright position shown in FIG. 3 by contacting the regulating member 25c. .

  Next, a case where the sheet storage device 100 is stored will be described with reference to FIG. FIG. 5 shows a state in which the stay 24 is rotated about the hinge 24a in the direction opposite to the sheet discharging direction and the sheet storage device 100 is stored in the storage position. The sheet receiving surface 12, the rod-shaped member 11, and the rod-shaped member 23 are located inside the recording apparatus installation area and inside the leading end 8 a of the discharge guide 8. At this time, the rod-shaped member 11 pushes the guide member 25 against the urging force of the spring member 25b, which is a leaf spring, and the guide member 25 rotates clockwise about the shaft 25a and retracts to the horizontal position.

  As described above, the sheet storage apparatus 100 can be stored and stored in the installation area of the recording apparatus 200.

  In the above embodiment, the abutting member 16 is provided with the curl pressing surface 22 at the front end of the sheet so as to face the sheet guide surface. As a result, the sheet front end that abuts against the abutting surface is sandwiched between the sheet guide surface and the curl pressing surface. A reaction force is generated on a sheet with curl wrinkles, and it tends to come off from the abutting surface. However, by sandwiching between the sheet guide surface and the curl pressing surface, the reaction force of the sheet can be regulated and it can be prevented from coming off from the abutting surface. As described above, the behavior of the front end of the sheet when the sheets are stacked can be stabilized.

  According to the third, fourth, and fifth aspects, a plurality of abutting members are provided so that they can be coupled and rotated by the connecting members. As described above, when the position of the abutting member is switched, the abutting member can be operated simultaneously. In addition, it is easy to move and align to the desired position, improving operability.

  According to the sixth, seventh, and eighth aspects, the spring-biased guide member is provided on the rigid sheet guide member, and the sheet receiving surface constituted by the cloth and the rod-shaped member is rotated by the support member. Supported movably. When using the sheet storage device, the sheet receiving surface protrudes from the recording device, and the guide member is in an upright position. On the other hand, when the sheet storage device is not used, the sheet receiving surface retracts into the installation area of the recording apparatus, and at the same time, the sheet receiving surface pushes the guide member and moves to the retracted position. As described above, the installation area when the sheet storage device is not used can be reduced.

DESCRIPTION OF SYMBOLS 1 Roll-shaped sheet 6 Recording head 7 Ejection port 8 Ejection guide 11 Bar-shaped member 12 Sheet receiving member 13 Bar-shaped member 15 Sheet abutting surface (first abutting surface)
16 Abutting member 17 Bar-shaped member 18 Sheet guide surface 19 Sheet abutting surface (second abutting surface)
20 Guide member 100 Sheet storage device 200 Recording device S Sheet

Claims (13)

A sheet storage device for storing the discharged sheets by the discharge means,
A receiving member for receiving the discharged sheet;
A first abutting surface for locking the leading edge of the sheet supported by the receiving member;
Between the discharge means and the first abutment surface, a second abutment that is movable between a latching position for latching a leading end of the sheet supported by the receiving member and a retracted position that is not latched. Surface,
When the second abutting surface is in the locking position, the front end of the sheet is guided to the second abutting surface by guiding the surface of the discharged sheet that faces the receiving member. A guide surface,
A sheet storage device comprising:   The sheet storage device according to claim 1, wherein when the second abutting surface is positioned at the retracted position, the guide surface retracts to a position where the sheet is not guided.   A second guide surface facing the guide surface and guiding a surface opposite to the guide surface of the sheet, and the second guide surface when the second abutting surface is located at the retracted position; The sheet storage device according to claim 2, wherein the surface is retracted to a position where the sheet is not guided.   The sheet is discharged by the discharging means while being locked to the first or second abutting surface, so that the rear end of the sheet hangs down on the opposite side of the receiving surface of the receiving member. The sheet storage device according to claim 1, wherein the sheet storage device is held by the receiving member in a state. The guide member is disposed at a position facing the receiving member and guides a surface of the sheet opposite to the receiving member, and the receiving member is movably supported at a storage position below the discharge means, The sheet storage device according to claim 1, wherein the guide member is moved by being pushed by the receiving member that moves to the storage position. A recording device for recording on a sheet ,
A sheet outlet for discharging recorded sheets;
A receiving member that is disposed below the sheet discharge port and receives the discharged sheet;
A first abutting surface that abuts on the lower end portion of the sheet is supported by the receiving member,
The Te smell between the discharge port and the first abutment surface, a second abutting surface that abuts on the lower end portion of the sheet is supported by the receiving member, the receiving sheet to be discharged has a abutment member having a guide surface for guiding the sheet to the second abutting surface by guiding the surface on the side facing the member,
Said abutment member, said second abutment surface is abutted against an end portion of the sheet, and abutting position where the guide surface for guiding the sheet, and the second abutment surface and the guide surface sheet A recording apparatus, wherein the recording apparatus is movably supported at a retracted position where it does not contact.   The recording apparatus according to claim 6, wherein a plurality of the abutting members are arranged in the width direction of the sheet.   The recording apparatus according to claim 7, wherein the plurality of abutting members are connected by a connecting member and integrally move to the restriction position and the retracted position.   The recording apparatus according to claim 8, wherein the connecting member is a shaft member extending in a width direction of the sheet, and the plurality of abutting members rotate about the shaft member.   The guide member is disposed at a position facing the receiving member and guides a surface of the sheet opposite to the sheet receiving member, and the sheet receiving member is movably supported at a storage position below the discharge port. The sheet storage device according to claim 6, wherein the guide member is pushed and retracted by the sheet receiving member that moves to the storage position.   The recording apparatus according to claim 10, wherein the guide member is rotatably supported and abuts on the regulating member by a spring bias.   The receiving member has a cloth supported by a rod-shaped member, and the rod-shaped member is supported by a holding member that is rotatably supported near the bottom of the recording apparatus, and moves the sheet receiving member to a storage position. The recording apparatus according to claim 11, wherein the sheet receiving member retracts the guide member against the spring bias. The recording apparatus according to claim 6, wherein the recording apparatus performs recording on a surface that is outside when the roll-shaped sheet is wound .