JP3858974B2 - Discharge stacker and recording apparatus provided with the discharge stacker - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a discharge stacker that stacks discharged recording materials in a recording apparatus that performs recording on the recording material. The present invention also relates to a recording apparatus provided with the paper discharge stacker.
[0002]
[Prior art]
One of the recording apparatuses is a printer, and some printers include a paper discharge stacker for stacking recorded recording materials. Furthermore, the paper discharge stacker includes a stacker base and a stacker drawer that can be pulled out from the stacker base in the paper discharge direction. Some are configured so as to save a printer installation space by forming a long stack surface and storing it when not in use.
[0003]
Here, the stacker base portion is configured by a main body portion that is attached to the recording apparatus main body for storing the stacker drawer portion, and a lid portion that covers an open upper portion of the main body portion, and the stacker drawer portion is a lid portion. Is held in the stacker base by being attached to the main body.
[0004]
[Problems to be solved by the invention]
By the way, the discharge stacker protrudes toward the front side of the printer, and a space is formed between the discharge stacker and the printer installation surface, so that an external force is applied to the discharge stacker from above. It is a component that is easily damaged. Accordingly, as described above, in a configuration in which the stacker drawer portion is held in the stacker base by the lid portion, when a strong external force is applied to the stacker drawer portion from above, the external force is applied to the lid portion that is low in strength, As a result, the lid part may come off or the lid part may be damaged.
[0005]
Therefore, the present invention has been made in view of such a problem, and the problem is that a discharge stacker configured by a stacker base and a stacker drawer drawn from the stacker base has a stacker drawer from above. An object of the present invention is to obtain a paper discharge stacker in which the stacker base portion is not easily damaged even when a strong external force is applied.
[0006]
[Means for Solving the Problems]
In order to solve the above-described problem, a paper discharge stacker according to claim 1 of the present application is a paper discharge stacker that stacks discharged recording materials in a recording apparatus that records on a recording material. A stacker base that is attached to the recording apparatus and forms a stack surface of the recording material, and when used, the upper surface forms the stack surface together with the stacker base by being pulled out from the stacker base toward the paper discharge direction. A stacker drawer portion that is slidable with respect to the stacker base portion and is housed in the stacker base portion by being pushed toward the upstream side, and the stacker base portion houses the stacker drawer portion. It is composed of a main body part and a lid part that covers the open upper part of the main body part. Engaging protrusions that protrude toward the surface are provided, and guide rails that engage with the engaging protrusions extend in the sliding direction of the stacker drawer portion on surfaces that guide both side surfaces of the stacker drawer portion in the main body. When the stacker drawer portion is pulled out from the stacker base portion, the stacker drawer portion is supported by the main body portion by the engagement of the engagement protrusion and the guide rail, and is disposed above the stacker drawer portion. When the external force is applied from the stacker, the stacker pull-out portion can be lifted upward with the front side of the recording apparatus main body as a fulcrum through the stacker base. To do.
[0007]
According to the first aspect of the present invention, the paper discharge stacker has a stacker base portion including a main body portion attached to the recording apparatus main body and a lid portion covering the upper portion of the main body portion, and the stacker base portion faces in the paper discharge direction. And a stacker drawer portion to be pulled out. When an external force is applied from above to the stacker drawer in a state where the stacker drawer is pulled out from the stacker base (when in use), the external force is applied to the main body from the engaging projections formed on both side surfaces of the stacker drawer. It is transmitted to the main body portion with high strength attached to the recording apparatus main body via a guide rail formed in the portion.
[0008]
That is, even if an external force is applied to the stacker drawer from above, the lid that forms the stacker base will not be affected, and the stacker drawer will be supported by the high-strength body. Thus, it is possible to prevent the occurrence of problems such as the lid part being detached from the main body part or being damaged.
Further, when an external force is applied to the stacker drawer portion from above, the stacker drawer portion can lift the rear side of the recording apparatus body upward with the front side of the recording apparatus body as a fulcrum via the stacker base. Therefore, even if a strong external force is applied to the stacker drawer portion from above, the paper discharge stacker will not be damaged.
[0009]
The paper discharge stacker according to claim 2 of the present application is characterized in that, in claim 1, a stopper portion for restricting a maximum pull-out position of the stacker pull-out portion is provided.
According to the second aspect of the present invention, the stopper portion for restricting the maximum pull-out position of the stacker pull-out portion is provided, so that when the stacker pull-out portion is pulled out, the stacker pull-out portion falls off from the stacker base portion. There is nothing.
[0010]
The paper discharge stacker according to claim 3 of the present invention is characterized in that, in claim 1 or 2, the engaging projection is integrally formed with the stacker drawer portion by resin molding.
According to the third aspect of the present invention, since the engaging protrusion is integrally formed with the stacker drawer portion by resin molding, the engaging protrusion can be easily and at low cost and with high strength. Can be provided.
[0011]
The paper discharge stacker according to claim 4 of the present invention is characterized in that, in any one of claims 1 to 3, the guide rail is formed integrally with the main body by resin molding.
According to the invention of claim 4 of the present application, since the guide rail is integrally formed with the main body by resin molding, the guide rail can be provided simply and at low cost and with high strength. it can.
[0012]
The discharge stacker according to claim 5 of the present invention is the discharge stacker according to any one of claims 1 to 4, wherein the stacker drawer portion includes a stacker drawer portion subsequent to the stacker that is further drawn downstream from the stacker drawer portion. It is characterized by having. According to the invention described in claim 5 of the present application, the stacker drawer portion includes the stacker drawer portion from the stacker that is pulled out further downstream from the stacker drawer portion. It is possible to reliably stack the recording materials.
[0014]
A recording apparatus according to a sixth aspect of the present invention includes the paper discharge stacker according to any one of the first to fifth aspects. According to the sixth aspect of the present invention, the recording apparatus for recording on the recording material includes the paper discharge stacker according to any one of the first to fifth aspects. It is possible to obtain the same effect as that of the invention described in any one of 5 above.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
<Inkjet printer configuration>
First, the overall configuration of an ink jet printer (hereinafter referred to as “printer”) 100 according to the present invention will be described with reference to FIGS. 1 to 3. Here, FIG. 1 and FIG. 2 are external perspective views of the printer 100, and FIG.
In FIG. 1, a printer 100 includes a paper feeding device 2 on the rear side (upstream side) of the apparatus main body 3 and a paper discharge stacker 1 described in detail later on the front side (downstream side). 3) is fed from the rear side by the paper feeding device 2, and discharged from the paper discharge port 6 provided on the front side toward the paper discharge stacker 1.
[0016]
A roll paper holder 5 for pivotally supporting a roll paper roll R wound in a roll shape can be mounted on the paper supply device 2, and a roll paper is provided at a paper discharge port 6 of the printer 100. Or the cutter unit 4 which cuts a cut sheet | seat by predetermined length can be mounted | worn. FIG. 2 shows a state in which the roll paper holder 5 is attached to the rear side of the paper feeding device 2 and the cutter unit 4 is attached to the paper discharge port 6. As described above, the printer 100 is configured to be able to use both cut paper and roll paper, and is configured to be cut at a predetermined length.
[0017]
1 and 2, the paper discharge stacker 1 is configured to extend and contract toward the front and rear of the apparatus (three-stage configuration). By extending toward the front of the apparatus, the upper surface forms a wide stack surface of the paper P. Thus, the use state shown in FIGS. 1 and 2 is obtained. Moreover, it retracts to the rear of the device and turns upward about a rotation shaft 30a (see FIG. 4) to enter the storage state (the storage state is not shown). A more detailed configuration of the paper discharge stacker 1 will be described later.
[0018]
Next, the internal configuration of the printer 100 will be described with reference to FIG. First, as described above, the printer 100 includes the paper feeding device 2 at the rear (right side in FIG. 3). The sheet feeding device 2 includes a hopper 16, and the sheets P as cut sheets are stacked and stored on the hopper 16 in an inclined posture. In the case of roll paper, it is fed from the lower side of the hopper 16 toward the downstream side (not shown). The hopper 16 is provided so as to be rotatable around a rotation fulcrum (not shown) located above the rear portion of the paper feeding device 2, and its tip is pressed against and separated from the paper feed roller 14 that is rotationally driven. It is supposed to work. The uppermost one of the stacked sheets P is fed out downstream by the hopper 16 performing a pressure contact operation with respect to the paper feed roller 14 and rotating the paper feed roller 14 in the pressure contact state. The paper feed roller 14 has a substantially D shape when viewed from the side, and is controlled so that the flat portion faces the paper P during the printing operation (the state of FIG. 3), thereby reducing the transport load of the paper P. .
[0019]
A sheet guide 15 as a plate-like body is provided substantially horizontally on the lower side downstream from the sheet feed roller 14, and the leading edge of the sheet P fed out from the sheet feed device 2 is in contact with the sheet guide 15 obliquely, so that smooth To the downstream side. A conveyance roller 19 including a conveyance driving roller 19 a that is rotationally driven and a conveyance driven roller 19 b that is in pressure contact with the conveyance driving roller 19 a is provided downstream from the paper guide 15, and the sheet P is conveyed by the conveyance roller 19. Nipped and conveyed downstream at a constant pitch.
[0020]
The conveyance driven roller 19b is pivotally supported on the downstream side of the conveyance driven roller holder 18, and the conveyance driven roller holder 18 is provided so as to be rotatable in the clockwise and counterclockwise directions in FIG. In addition, the conveyance driven roller 19b is always urged to rotate in a direction (counterclockwise in FIG. 3) in pressure contact with the conveyance drive roller 19a by a torsion coil spring (not shown).
[0021]
Next, a paper detector 17 composed of a sensor main body 17a and a detector 17b for detecting the passage of the paper P is disposed on the paper P feeding path from the paper feed roller 14 to the transport roller 19. ing. The detector 17b has a substantially "<" shape when viewed from the side, and is provided so as to be pivotable in the clockwise and counterclockwise directions of FIG. 3 around the pivot shaft 17c near the center thereof. The lower side is formed so as to smoothly come into contact with the leading edge of the paper P traveling from the downstream to the upstream at a gentle angle.
[0022]
The sensor main body 17a located above the detector 17b includes a light emitting portion (not shown) and a light receiving portion (not shown) that receives light from the light emitting portion, and the upper side of the rotation shaft 17c of the detector 17b is on the upper side. The rotation operation blocks and passes light from the light emitting portion toward the light receiving portion. Therefore, as shown in FIG. 3, when the detector 17b is rotated so as to be pushed upward with the passage of the paper P, the upper side of the detector 17b is detached from the sensor main body 17a. Thus, the passage of the paper P is detected.
[0023]
Subsequently, the platen 28 and the ink jet recording head 13 constituting the recording unit (recording unit) of the printer 100 are disposed downstream of the conveying roller 19 so as to face each other. The platen 28 is long in the main scanning direction (the front and back direction in FIG. 3), and the paper P transported below the inkjet recording head 13 by the transport roller 19 is supported from below by the platen 28. The ink jet recording head 13 is provided at the bottom of the carriage 10 on which the ink cartridge 11 is mounted. The carriage 10 reciprocates in the main scanning direction while being guided by a carriage guide shaft 12 extending in the main scanning direction.
[0024]
Next, downstream of the ink jet recording head 13 is a paper discharge portion (paper discharge means) of the printer 100, and by lightly contacting the paper discharge drive roller 20a that is rotationally driven and the paper discharge drive roller 20a. A paper discharge roller 20 including a paper discharge driven roller 20b that is driven to rotate is provided. The paper P printed by the inkjet recording head 13 is nipped by the paper discharge roller 20, and the paper discharge drive roller 20a rotates. It is discharged by moving. The paper discharge driven roller 20 b is pivotally supported by a paper discharge driven roller holder 23, and the paper discharge driven roller holder 23 is attached to the paper discharge driven frame 25. The paper discharge slave frame 25 is formed of a plate-like body that is long in the main scanning direction, and the paper discharge slave frame 25 is in pressure contact with the paper discharge main frame 24 that is similarly formed of a plate-like body that is long in the main scanning direction. It is attached in a state.
[0025]
Subsequently, a paper discharge auxiliary roller 22 is provided slightly upstream of the paper discharge driven roller 20b, and the paper P is pressed slightly downward by the paper discharge auxiliary roller 22. Further, the nip point between the paper discharge driving roller 20a and the driven driven roller 20b is set slightly upstream, and further, the nip point between the transport driving roller 19a and the transport driven roller 19b is set slightly downstream. . As a result, the paper P is curved slightly convexly between the paper discharge roller 20 and the transport roller 19, and the paper P positioned under the inkjet recording head 13 is pressed against the platen 28, thereby P lift is prevented and normal print quality is maintained.
[0026]
Here, when the trailing edge of the paper P is removed from the conveying roller 19, the paper P is pressed against the platen 28 only by the paper discharge roller 20. Therefore, in this case, when the downstream portion of the paper P is significantly lowered from the paper discharge roller 20, the upstream portion of the paper P is lifted from the paper discharge roller 20 and normal print quality cannot be obtained. In view of this, the printer 100 is configured to prevent the problem by the cutter unit 4 and a paper discharge stacker 1 described later.
[0027]
As described with reference to FIGS. 1 and 2, the cutter unit 4 provided downstream of the paper discharge roller 20 is detachably provided at the paper discharge port 6 on the front side of the apparatus main body 3 by snap means (not shown). The cutter unit 4 has a rotary cutter 43 provided so as to be capable of reciprocating in the main scanning direction, a plate member 44 for shearing the paper P by the rotary cutter 43, and a guide member 45 for guiding the paper P to the rotary cutter 43. Then, the paper P is cut by reciprocating the rotary cutter 43 in the main scanning direction by a drive motor (not shown).
The overall configuration of the printer 100 has been described above.
[0028]
<Configuration and operation effect of paper discharge stacker>
Next, with reference to FIGS. 4 to 7, the configuration and operational effects of the paper discharge stacker 1 will be described in detail. 4 and 5 are side views of the paper discharge stacker 1. FIG. 4 shows a state where the cutter unit 4 is removed, and FIG. 5 shows a state where the cutter unit 4 is attached. FIG. 6 is a perspective view of the paper discharge port 6 as viewed from the front, and FIG. 7 is an exploded perspective view of the paper discharge stacker 1.
[0029]
First, in FIG. 4, the paper discharge stacker 1 includes a stacker base portion 30 having a thin box shape, a first drawer portion 31 having a thin box shape housed in the stacker base portion 30, and the first drawer. The stacker is constituted by a second drawer portion 32 having a thin box shape and housed in the portion 31 and a sheet stopper portion 33 formed of a plate-like body provided at the tip of the second drawer portion 32. The base 30, the first drawer 31, and the second drawer 32 have a configuration (three-stage configuration) that expands and contracts forward (paper discharge direction: left side in FIG. 4) and rear (right side in FIG. 4). ing.
[0030]
A rotation shaft 30a is provided on both sides of the upstream side of the stacker base 30 (right side in FIGS. 4 and 5), and the rotation shaft 30a is formed on both side walls in the paper discharge port 6 (see FIG. 6). The paper discharge stacker 1 is attached to the apparatus main body 3 by being supported by a bearing (not shown) provided. When used, the upper surface of the stacker base 30, the first drawer 31, and the second drawer 32 forms a wide stack surface of the paper P by extending toward the front of the apparatus. The two drawer portions 32 are pushed into the first drawer portion 31 and the first drawer portion 31 is pushed into the stacker base portion 30, respectively. Thus, the storage state of the printer 100 is saved. Furthermore, the stacker base 30 is rotated upward about the rotation shaft 30a from the stored state (clockwise in FIG. 4), so that the installation space of the printer 100 can be further saved. Yes.
[0031]
As shown in FIG. 7, the stacker base 30 is configured such that a thin plate-like lid 30f is attached to the main body 30g by snap means (not shown), and the first drawer 31 can be slid on the main body 30g. It comes to be stored in. More specifically, the main body portion 30g is integrally formed with guide plates 30e and 30e that stand upright so as to extend in the paper discharge direction and guide both side surfaces of the first drawer portion 31. . Further, on the guide plate 30e, 30e on the side (inner side) facing the first drawer portion 31, a guide rail top 30b as a ridge extending in the paper discharge direction (left and right direction in FIG. 5), and the guide rail top Guide rails 30c are integrally formed with the guide plate 30e as protrusions extending in parallel with the guide rail upper 30b at a predetermined interval below the 30b. Here, the lower guide rail 30c extends longer on the downstream side than the upper guide rail 30b (see also FIGS. 4 and 5).
[0032]
On the other hand, an engagement protrusion 31a having a rectangular shape in front view is formed in the vicinity of the upstream end portion (on the right side in FIG. 5) on both side surfaces of the first lead portion 31. The engaging protrusion 31a is inserted between the upper guide rail 30b and the lower guide rail 30c when the first drawer portion 31 is provided in the stacker base 30. That is, when the first drawer portion 31 is provided on the main body portion 30g of the stacker base portion 30, the engagement protrusion 31a is formed between the guide rail upper portion 30b and the guide rail lower portion 30c from the rear end (right end in FIG. 5) of the guide rail upper portion 30b. Thus, even if the first drawer portion 31 is pulled out from the stacker base portion 30, the first drawer portion 30b is held on the main body portion 30g of the stacker base portion 30 by the guide rail upper portion 30b and the guide race lower portion 30c. .
[0033]
In FIG. 7, the protrusions 30 d and 30 d formed in the main body 30 g are stoppers that restrict the maximum pull-out position of the first pull-out part 31. The protrusions 30 d and 30 d and the first pull-out part 31 Engagement with the provided stopper portions 31b and 31b restricts the maximum pull-out position of the first pull-out portion 31, thereby preventing the first pull-out portion 31 from dropping from the stacker base portion 30.
[0034]
By being configured as described above, the paper discharge stacker 1 has the following operational effects. That is, the discharge stacker 1 protrudes toward the front side of the printer 100 during use, and a space is formed below the printer installation surface (see FIGS. 4 and 5). When an external force more than necessary is applied, the structure is easily damaged. Therefore, for example, if the first drawer portion 31 is configured to be held from above in the main body portion 30g of the stacker base portion 30 by the lid portion 30f, the external force is directly applied to the lid portion 30f having low strength, As a result, the lid 30f may come off from the main body 30g, or the lid 30f may be damaged.
[0035]
However, as described above, in the paper discharge stacker 1 according to the present embodiment, the first drawer portion 31 is not the lid portion 30f but the main body portion 30g having a high strength, and the engagement protrusion 31a and the guide rail upper portion 30b are engaged. It comes to be supported by the match. Therefore, even if an external force more than necessary is applied to the first drawer portion 31 or the second drawer portion 32 from above, the lid portion 30f is not affected, and the first drawer portion 31 and the main drawer portion 30g are not affected. Since the second drawer 32 is supported, it is possible to increase the strength of the paper discharge stacker 1.
[0036]
By the way, in the present embodiment, when an external force is applied to the first drawer portion 31 or the second drawer portion 32 from above, the entire paper discharge stacker 1 is slightly bent. The strength is such that the rear side of the apparatus body 3 can be lifted with the side as a fulcrum. Therefore, even when an external force more than necessary is applied to the paper discharge stacker 1 from above, the apparatus main body 3 is lifted upward before the paper discharge stacker 1 is damaged, so that the paper discharge stacker 1 is effectively damaged. It is possible to prevent.
[0037]
Next, the stacking posture of the paper discharge stacker 1 will be described. The paper discharge stacker 1 has two paper discharge postures in a use state where the paper discharge stacker 1 is pulled out toward the front of the apparatus. 4 shows the first stacking posture of the paper discharge stacker 1, and FIG. 5 shows the second stacking posture.
[0038]
In FIG. 4, the paper discharge stacker 1 is inclined such that the downstream end (the left side in FIG. 4) faces upward, and the sheets P are stacked in such a first stacking attitude. Here, the inclined posture is formed by a pressing leaf spring 26 as an urging means shown in FIG. That is, in FIG. 6, the pressure plate springs 26, 26 are provided on both side walls of the paper discharge port 6 so as to protrude toward the center, and the upstream end of the stacker base 30 is formed on the pressure plate springs 26, 26. (See the arrow in FIG. 4 is the direction of action of the spring force). That is, since the first stacking posture is not firmly maintained, for example, when an external force more than necessary is applied from above as described above, the paper discharge stacker 1 is caused by the urging force of the pressing leaf springs 26 and 26. Thus, it is possible to obtain an operational effect that the paper discharge stacker 1 can be prevented from being damaged by elastically rotating in the horizontal direction.
[0039]
The reason why the sheets P are stacked in such a first stacking posture (tilted posture) is as follows. That is, as described above, the printer 100 has a curved posture such that the paper P protrudes downward by the paper discharge roller 20 and the transport roller 19, thereby pressing the paper P against the platen 28, and thereby the paper P and the ink jet recording. The distance from the head 13 (see FIG. 3) is defined. However, after the trailing edge of the paper P is separated from the transport roller 19, only the paper discharge roller 20 regulates the transport posture of the paper P. Accordingly, when the downstream portion of the paper P from the paper discharge roller 20 drastically hangs down, the paper P under the inkjet recording head 13 is lifted from the platen 28 due to this influence, and normal print quality cannot be obtained. Therefore, by setting the sheet discharge stacker 1 to the first stacking posture (inclined posture), the paper P is prevented from drooping significantly downward, and such a problem is solved.
[0040]
Next, when the cutter unit 4 described above is attached to the paper discharge port 6, the inclined paper discharge stacker 1 becomes an obstacle. Here, in FIG. 5, the cutter unit 4 includes the driving roller 41 and the driven roller 42 as described above, and includes a mechanism for feeding the cut paper P (or a case where the paper is not cut) with these two rollers. Yes. Therefore, even if the trailing edge of the paper P is separated from the transport roller 19 by the driving roller 41 and the driven roller 42, the downstream side vicinity of the paper discharge roller 20 does not hang downward, and therefore the cutter unit 4 is attached. In this case, the problem of the lifting of the paper P from the platen 28 as described above can be prevented.
[0041]
Therefore, the paper discharge stacker 1 according to the present embodiment can adopt the second stack posture shown in FIG. 5 in addition to the first stack posture shown in FIG. In the second stacking posture, when the cutter unit 4 is mounted in the paper discharge port 6, the paper discharge stacker 1 is rotated horizontally against the urging force of the pressing plate springs 26, 26 by the cutter unit 4. And is formed by attaching the cutter unit 4 by snap means (not shown). In other words, the cutter unit 4 functions as a holding unit that forms the second stacking posture of the paper discharge stacker 1.
A stopper member 27 is provided at the upstream end portion of the stacker base 30 at the sheet discharge port 6 to prevent the discharge stacker 1 from rotating further downward from the horizontal posture (FIG. 4). Thus, the sheet stacker 1 is regulated so as not to rotate in a downward direction more than necessary.
[0042]
As described above, the paper discharge stacker 1 according to the present embodiment has the first stacking posture in which the paper P is stacked in the inclined posture, and the second stacking in which the paper P is stacked by rotating horizontally from the first stacking posture. Therefore, in the first stack posture, the vicinity of the downstream side of the paper P from the paper discharge roller 20 does not hang down significantly, and normal printing is performed. The quality can be ensured, and in the second stack posture, the paper discharge stacker 1 does not get in the way when the cutter unit 4 is mounted.
Note that the second stack posture is not limited to a horizontal posture, and may be any angle as long as the cutter unit 4 can be easily mounted.
[0043]
Incidentally, since the stack surface of the discharge stack 1 is closer to the horizontal posture in the second stack posture than the first stack posture, the paper P that is cut and discharged by the cutter unit 4 is discharged from the discharge stacker 1. If the paper P is dropped, the discharged paper P slides down from the paper discharge stacker 1 and the printing surface is stained. Even when the paper is not cut by the cutter unit 4, if the paper discharge stacker is in the second stacking posture by mounting the cutter unit 4, the paper P (sheet paper) may slide down from the paper discharge stacker 1. is there.
[0044]
Therefore, the paper discharge stacker 1 according to the present embodiment has a sheet stopper portion 33 provided with an inclined surface inclined at a steep angle toward the upstream side of the stack surface in the second stack posture at the downstream end portion. Is provided. As shown in FIG. 5, the paper stopper portion is formed of a plate-like body, and is provided so as to be rotatable around the rotation fulcrum 33 c at the front end of the second drawer portion 32 as viewed from the paper P discharge path. By turning, it can be moved freely. That is, the state shown in FIG. 4 is a submerged state, and in the submerged state, the front side surface 33 a of the paper stopper portion 33 forms a smooth stack surface of the paper P together with the upper surfaces of the stacker base portion 30 and the first drawer portion 31. In addition, the state shown in FIG. 5 rotated in the direction of rising from the descent state to the upstream side is the out state, and in the out state, the paper discharge stacker 1 in which the back side surface 33b of the paper stopper portion 33 is in the second stacking posture. An inclined surface that is steeper than the stack surface is formed. Note that the sheet stopper portion 33 has an L-shaped shape at the end thereof in a side view, and when rotated, the sheet stopper portion 33 comes into contact with a stopper 32a formed in the second drawer portion 32 by the L-shape. Thus, the tilt angle in the extended state is regulated.
[0045]
As described above, the paper P discharged to the paper discharge stacker 1 does not slide downward from the leading edge due to the steep slope of the paper stopper portion 33 in the output state, thereby preventing problems such as soiling the printing surface of the paper P. It is possible. At the same time, since the paper stopper portion 33 is formed by an inclined surface, the front end of the paper is caught by the portion of the paper stopper portion 33 even when a long paper P, for example, uncut roll paper is discharged. The sheet P discharged by the sheet P does not stay on the sheet discharge stacker, and the sheet P stops over the sheet stopper portion 33, thereby preventing the interference of the sheet P on the sheet discharge stacker 33 and preventing problems such as staining the printing surface. It becomes possible.
When the paper stopper 33 is not required, for example, when stacking is performed in the first stacking posture (inclined posture), the paper stopper unit 33 may be placed in a submerged state so as not to interfere with the paper discharge operation. It becomes possible.
[0046]
【The invention's effect】
As described above, according to the present invention, the paper discharge stacker has a stacker base portion including a main body portion attached to the recording apparatus main body and a lid portion covering the upper portion of the main body portion, and the stacker base portion faces the paper discharge direction. A stacker drawer portion to be pulled out. When an external force is applied from above to the stacker drawer in a state where the stacker drawer is pulled out from the stacker base (when in use), the external force is applied to the main body from the engaging projections formed on both side surfaces of the stacker drawer. It is transmitted to the main body portion with high strength attached to the recording apparatus main body via a guide rail formed in the portion.
That is, even if an external force is applied to the stacker drawer from above, the lid that forms the stacker base will not be affected, and the stacker drawer will be supported by the high-strength body. Thus, it is possible to prevent the occurrence of problems such as the lid part being detached from the main body part or being damaged.
[Brief description of the drawings]
FIG. 1 is an external perspective view of an ink jet printer according to the present invention, showing a state in which a cutter unit is removed.
FIG. 2 is an external perspective view of an ink jet printer according to the present invention, showing a state in which a cutter unit is attached.
FIG. 3 is a side sectional view of the ink jet printer according to the present invention.
FIG. 4 is a side view of the paper discharge stacker according to the present invention, and shows a state in which the cutter unit is removed.
FIG. 5 is a side sectional view of a paper discharge stacker according to the present invention, showing a state in which a cutter unit is attached.
FIG. 6 is a perspective view of a sheet discharge port as viewed from the front.
FIG. 7 is an exploded perspective view of a paper discharge stacker according to the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Paper discharge stacker 2 Paper feed device 3 Apparatus main body 4 Cutter unit 6 Paper discharge port 13 Inkjet recording head 19 Conveyance roller 20 Paper discharge roller 26 Pressing plate spring 27 Stopper member 28 Platen 30 Stacker base 31 First drawer part 32 Second Drawer 33 Paper stopper 100 Inkjet printer

Claims (6)

In a recording apparatus for recording on a recording material, a discharge stacker for stacking the discharged recording materials,
A stacker base attached to the recording apparatus, the upper surface of which forms a stack surface of the recording material;
When used, the upper surface forms the stack surface together with the stacker base by being pulled out from the stacker base toward the paper discharge direction, and is stored in the stacker base by being pushed toward the upstream side when not in use. A stacker drawer portion slidably provided with respect to the stacker base portion,
The stacker base portion is constituted by a main body portion that houses the stacker drawer portion, and a lid portion that covers an open upper portion of the main body portion,
Engagement protrusions projecting sideways are provided on both side surfaces of the stacker drawer portion,
Guide rails that engage with the engaging projections extend in a sliding direction of the stacker drawer portion on the surfaces that guide both side surfaces of the stacker drawer portion in the main body portion,
When the stacker drawer portion is pulled out from the stacker base portion, the stacker drawer portion is supported by the main body portion by the engagement of the engagement protrusion and the guide rail, and from above the stacker drawer portion. When an external force is applied, the stacker pull-out portion can be lifted upward with the front side of the recording apparatus main body as a fulcrum through the stacker base. Paper output stacker.   2. The paper discharge stacker according to claim 1, further comprising a stopper portion that regulates a maximum pull-out position of the stacker pull-out portion.   3. The paper discharge stacker according to claim 1, wherein the engaging protrusion is integrally formed with the stacker drawer portion by resin molding.   4. The paper discharge stacker according to claim 1, wherein the guide rail is formed integrally with the main body by resin molding. 5.   5. The paper discharge stacker according to claim 1, wherein the stacker drawer portion includes a stacker drawer portion subsequent to the stacker that is further drawn downstream from the stacker drawer portion. .   A recording apparatus for recording on a recording material, comprising the paper discharge stacker according to any one of claims 1 to 5.

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