JP2003095512A - Paper discharging stacker and recording apparatus having the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a paper discharging stacker which may not bother when mounting a removable cutter apparatus and may provide a suitable paper discharging operation even when the cutter apparatus is not mounted. SOLUTION: The paper discharging stacker 1 comprises a stacker base 30, a first pull out part 31 stored in the stacker base 30, a second pull out part 32 stored in the first pull out part 31, a paper stopper part 33 turnable at a head of the second pull out part 32. The paper discharging stacker 1 may switch between a second stack attitude of a horizontal attitude and a first stack attitude inclining above the second stack attitude. The second stack attitude does not bother the cutter unit 4 with mounting. The first stack attitude may prevent a paper P from swelling at an ink-jet recording head part.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a discharge stacker for stacking discharged recording materials in a recording apparatus for recording on recording materials. The present invention also relates to a recording apparatus provided with the paper discharge stacker.

[0002]

2. Description of the Related Art A printer is one of recording devices,
Some printers include a paper discharge stacker for stacking recording materials on which recording has been performed. Further, the discharge stacker is provided with a rotation fulcrum on the upstream side when the discharge path of the recording material is viewed from the side, and by rotating the discharge stacker, the downstream end has an inclined posture such that the downstream end faces upward. , There is one that is configured to be in a vertical position when not in use to save the installation space.

Here, the reason why the downstream end portion is inclined so that the downstream end portion faces upward in use is that the recording material does not float above the platen facing the recording head. That is, the recording apparatus includes a platen below the recording head,
The conveying roller provided on the upstream side of the platen and the discharging roller provided on the downstream side of the platen make the recording material a gentle curved posture so as to be convex downward, and thereby press the recording material against the platen. , Defines the distance between the recording head and the recording material. However, after the trailing edge of the recording material has come off the transport roller, only the paper discharge roller regulates the transporting posture of the recording material. Therefore, when the portion of the recording material downstream from the paper discharge roller droops significantly, the recording material under the recording head floats up from the platen due to this effect, and normal printing quality cannot be obtained. Therefore, such a problem is solved by setting the discharge stacker in a tilted posture such that the downstream side end faces upward in use.

[0004]

By the way, a printer may be configured to be able to use roll paper as a recording material. In such a printer, a cutter device for cutting the roll paper to a predetermined length is used. In some cases, the recording material may be detachably provided on the downstream side of a discharge roller that discharges the recording material. The cutter device includes a feed roller that feeds paper while nipping the recording material, and a cutter blade that cuts the recording material,
While the recording material is being fed by the feed roller, the cutter blade is moved in the main scanning direction to perform cutting.

However, if such a cutter device is to be provided on the downstream side of the paper discharge rollers, the paper discharge stacker in the inclined posture as described above becomes an obstacle, and the cutter device cannot be mounted. There are cases.

Here, in the case of the cutter device having the feed roller for feeding the recording material while nipping the recording material as described above, the recording material is nipped by the feeding roller on the downstream side from the discharge roller. Therefore, the downstream side of the discharge roller does not drastically hang downward, and the above-mentioned problem of floating of the recording material from the platen does not occur. On the other hand, in order to perform the paper discharge operation with the cutter device removed, the paper discharge stacker needs to be in the inclined posture as described above.

Therefore, the present invention has been made in view of such a situation, and an object thereof is to perform an appropriate recording operation without being a hindrance when the detachable cutter device is attached, and even when the cutter device is not attached. Is to obtain a paper discharge stacker that can execute.

[0008]

In order to solve the above-mentioned problems, the paper ejection stacker according to claim 1 of the present invention has a recording unit for recording on a recording material and a recording unit for recording on the recording unit. A recording apparatus including a rotationally driven paper ejection drive roller for ejecting a material, and a paper ejection driven roller that is driven to rotate by nipping a recording material between the paper ejection drive roller, A discharge stacker that is provided on the downstream side of the discharge driving roller and stacks discharged recording materials, and has a rotation fulcrum on the upstream side when looking at the discharging path of the recording material. The downstream end has an inclined posture such that the end faces upward, and in the inclined posture, the first stack posture in which the recording materials are stacked, and the recording medium is rotated in the horizontal direction from the first stack posture. It is configured to be able to switch between the second stacking posture and the stacking posture. The features.

According to the first aspect of the present invention, the paper discharge stacker is rotatably provided, and has a first stack posture in which the recording materials are stacked in an inclined posture, and a horizontal direction from the first stack posture. It is configured to be able to switch between two postures, that is, a second stacking posture in which the recording material is stacked by being rotated to. Therefore, in the first stacking posture, the downstream side of the recording material does not drastically hang downward from the sheet discharge driving roller, and normal recording quality can be secured, and in the second stacking posture, For example, when the cutter device that cuts the recording material at a predetermined position is attached, the paper output stacker does not get in the way. From the above, it does not get in the way when attaching the detachable cutter device,
In addition, it is possible to obtain a paper discharge stacker that can execute an appropriate paper discharge operation even when the cutter device is not attached.

According to a second aspect of the present invention, in the sheet stacker according to the first aspect, an urging means for exerting an urging force from above is provided on an upper portion of the upstream side from the rotation fulcrum, and the first stacking posture is Is formed by the urging force of the urging means, and the second stack posture is formed by a holding means for rotating and holding the discharge stacker in the horizontal direction against the urging force of the urging means. It is characterized by
According to the second aspect of the present invention, the discharge stacker is formed in the first stack posture by the urging force of the urging means, so that, for example, in the first stack posture, an external force is applied to the discharge stacker from above. Even if granted
The discharge stacker elastically rotates in the horizontal direction, so that the effect that the discharge stacker is not damaged can be obtained, and the discharge stacker can be moved in the horizontal direction against the urging force of the urging means. Even when the sheet discharging stacker is rotated by the holding means that rotates and holds the sheet, the sheet stacker can be easily rotated.

According to a third aspect of the present invention, in the second aspect, the urging means comprises a leaf spring. According to the third aspect of the present invention, since the biasing means is a leaf spring, the biasing means can be constructed at low cost.

According to a fourth aspect of the present invention, in the third aspect of the present invention, the leaf springs are provided on both side ends of the sheet stacker. According to the invention of claim 4 of the present application, since the leaf springs are provided on both side ends of the paper discharge stacker, it is possible to more reliably form the first stack posture.

According to a fifth aspect of the present invention, there is provided a paper discharge stacker according to any one of the first to fourth aspects, wherein the holding means is
A cutter device for cutting the recording material to a predetermined length is provided above the paper output stacker. According to the invention of claim 5 of the present application, the holding means is a cutter device which is provided above the paper discharge stacker and cuts the recording material to a predetermined length. It is not necessary to provide the holding means having the stacking posture for the exclusive use thereof, so that it does not become an obstacle when the detachable cutter device is attached, and an appropriate paper discharge operation can be executed even when the cutter device is not attached. Therefore, it is possible to obtain the effect of the paper discharge stacker at low cost.

The discharge stacker according to claim 6 of the present application is characterized in that, in any one of claims 1 to 5, the second stack posture is a substantially horizontal posture. According to the invention of claim 6 of the present application, since the second stack posture is a substantially horizontal posture, the discharge stacker does not become an obstacle when the detachable cutter device is attached. The effect can be obtained.

According to a seventh aspect of the present invention, there is provided a paper discharge stacker according to any one of the first to fifth aspects, in which the paper output stacker is a stopper member that prevents the paper output stacker from rotating further downward from a substantially horizontal posture. It is characterized by having. According to the seventh aspect of the present invention, since the paper discharge stacker is provided with the stopper member that suppresses the rotation in the downward direction from the substantially horizontal posture, the recording materials stacked by this are It is possible to prevent the problem of slipping off the paper output stacker and falling onto the floor or the like.

According to an eighth aspect of the present invention, there is provided a paper discharge stacker according to any one of the first to seventh aspects, in which a stacker base portion having an upper surface forming a stack surface of a recording material and attached to the recording device, and a stacker base portion when used. The upper surface forms the stack surface together with the stacker base by being pulled out from the stacker base in the paper direction, and is housed 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 configured by a main body portion that accommodates the stacker drawer portion, and a lid portion that covers an open upper portion of the main body portion, Engagement protrusions protruding laterally are provided on both side surfaces of the stacker drawer portion, and the stacker is provided in the main body portion. The surface for guiding both sides of the feeder out portion, when the engaging projection and the engaging guide rails extending in the sliding direction of the stacker lead portions, the stacker lead portions are led out from the stacker base,
The stacker drawer portion is supported by the main body portion by the engagement between the engagement protrusion and the guide rail.

According to the eighth aspect of the present invention, the paper discharge stacker includes a stacker base part including a main body part attached to the main body of the recording apparatus and a lid part covering the upper part of the main body part, and a discharge direction from the stacker base part. And a stacker drawer portion that is drawn toward. Then, when an external force is applied to the stacker drawer portion from above in the state where the stacker drawer portion is pulled out from the stacker base portion (in use), the external force is applied from the engaging projections formed on both side surfaces of the stacker drawer portion to the main body. It is adapted to be transmitted to the high-strength main body portion attached to the recording apparatus main body through a guide rail formed in the portion.

That is, even if an external force is applied to the stacker drawer portion from above, the weak lid portion constituting the stacker base portion is not affected, and the stacker drawer portion is supported by the main body portion having high strength. Therefore, this makes it possible to prevent the occurrence of problems such as the lid coming off the main body or being damaged.

According to a ninth aspect of the present invention, there is provided a paper discharge stacker according to any one of the first to eighth aspects, in which the downstream end portion is provided with:
It is characterized in that a paper stopper portion is provided which is formed of an inclined surface which is inclined at a steeper angle toward the downstream side and upward than the angle formed by the stack surface on which the recording materials are stacked and the horizontal surface. According to the invention of claim 9 of the present application, the paper discharge stacker includes the paper stopper portion at the downstream end. Since the paper stopper portion is composed of an inclined surface that is inclined at a steeper angle toward the downstream side than the angle formed by the stack surface on which the recording materials are stacked and the horizontal surface, the paper is therefore ejected to the paper ejection stacker. The recording material does not slide downward due to the steep slope, so that it is possible to prevent problems such as soiling the recording surface of the recording material. Therefore, in the case where the stack surface of the paper discharge stacker is horizontal, the action and effect thereof can be particularly exerted.

At the same time, since the paper stopper portion is formed by the inclined surface, the recording material stays at the paper stopper portion even when ejecting a long recording material, especially roll paper. Instead, it is possible to prevent the recording material and the like from interfering with each other on the paper discharge stacker by overcoming the paper stopper portion, thereby preventing a problem such as damage to the recording surface.

According to a tenth aspect of the present invention, there is provided the paper discharge stacker according to the ninth aspect, wherein the paper stopper portion is provided so as to be retractable. According to the invention of claim 10 of the present application, since the paper stopper portion is provided so as to be retractable, when the paper stopper portion is unnecessary,
For example, as described above, when a long recording material typified by roll paper is ejected, the paper stopper portion is set in a retracted state so that the paper stopper portion interferes with the paper ejection operation. As a result, it is possible to perform a smooth paper discharge operation according to the type of recording material.

According to an eleventh aspect of the present invention, in the tenth aspect of the present invention, the sheet stopper portion is a side view of the sheet discharge path of the recording material centering around a pivotal fulcrum provided at the downstream end. It is composed of a rotatable plate-like body, and the front side of the plate-like body forms a part of the stack surface in a state where the plate-like body falls down to the downstream side. It is characterized in that the back side of the plate-like body forms the inclined surface by rotating in the rising direction from the collapsed state to the upstream side, and thereby the plate-like body is brought into the extended state. According to the eleventh aspect of the present invention, since the paper stopper portion is made of a plate-like member that forms the retracted state of the paper stopper portion by rotating, the paper stopper portion can be retracted and retracted. It can be obtained at a low cost with a simple structure, and since the protruding / retracting state can be formed by a simple turning operation, the operability is good.

The discharge stacker according to claim 12 of the present application is a recording device for recording on a recording material, and the sheet stacker according to claim 1
1 is provided with the paper discharge stacker according to any one of 1. According to the invention of claim 12 of the present application,
A recording apparatus for performing recording on a recording material according to claim 1.
Since the sheet discharge stacker according to any one of items 1 is provided, it is possible to obtain the same effect as that of the invention according to any one of items 1 to 11 of the present application.

[0024]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the drawings. <Structure of Inkjet Printer> First, FIGS.
The overall configuration of an inkjet printer (hereinafter referred to as “printer”) 100 according to the present invention will be described with reference to FIG. 1 and 2 are external perspective views of the printer 100, and FIG. 3 is a side sectional view of the same. In FIG.
The printer 100 includes a sheet feeding device 2 on the rear side (upstream side) of the apparatus main body 3, and a sheet ejection stacker 1 on the front side (downstream side), which will be described later in detail, and a sheet P as a recording material (see FIG. 3). The sheet feeding device 2 feeds the sheet from the rear side and discharges the sheet toward the sheet stacker 1 from the sheet discharge port 6 provided on the front side.

A roll paper holder 5 that rotatably supports a roll paper roll R wound in a roll shape can be mounted on the paper feeding device 2, and a paper discharge port 6 of the printer 100 can be installed. A cutter unit 4 that cuts roll paper or cut-out paper in a predetermined length can be attached. Figure 2
Attaches the roll paper holder 5 to the rear side of the paper feeding device 2,
Moreover, the state in which the cutter unit 4 is attached to the sheet discharge port 6 is shown. As described above, the printer 100 is configured to be able to use both cut paper and roll paper and to be cut at a predetermined length. 1 and 2, the paper discharge stacker 1 has a structure (three-stage structure) that expands and contracts toward the front and rear of the apparatus, and by extending toward the front of the apparatus, the upper surface forms a stack surface of the paper P. Thus, the use state shown in FIGS. 1 and 2 is obtained. In addition, it contracts to the rear of the device and also has a rotating shaft 30a (see FIG. 4).
By turning upwards about, the state becomes the stored state (the stored state is not shown). A more detailed structure of the paper discharge stacker 1 will be described later.

Next, the internal structure of the printer 100 will be described with reference to FIG. First, as described above, the printer 100 is provided with the sheet feeding device 2 at the rear portion (on the right side in FIG. 3). The paper feeding device 2 is provided with a hopper 16 on which the sheets P as cut sheets are accumulated and stored in an inclined posture.
In the case of roll paper, the paper 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 sheet feeding device 2, and its tip is pressed against and separated from the sheet feeding roller 14 which is driven to rotate. It is designed to work. The topmost one of the accumulated sheets P is the hopper 16
Performs a pressure contact operation with respect to the paper feed roller 14, and the paper feed roller 14 is rotated in the pressure contact state to be fed to the downstream side. The paper feed roller 14 has a substantially D-shape when viewed from the side, and its flat portion is controlled to face the paper P during the printing operation (state of FIG. 3), thereby reducing the transport load of the paper P. .

A paper guide 15 as a plate-like member is provided substantially horizontally below the paper feed roller 14 and the front end of the paper P fed from the paper feed device 2 obliquely contacts the paper guide 15. It touches and is smoothly guided to the downstream side. A transport driving roller 19a that is rotatably driven downstream from the paper guide 15, a transport driven roller 19b that is in pressure contact with the transport driving roller 19a,
Is provided, and the sheet P is nipped by the conveyance roller 19 and is conveyed at a constant pitch to the downstream side.

The transport driven roller 19b is axially supported on the downstream side of the transport driven roller holder 18, and the transport driven roller holder 18 is rotatable about the rotation shaft 18a in the clockwise direction and the counterclockwise direction in FIG. The transport driven roller 19b is provided and twisted by a torsion coil spring (not shown) in a direction in which the transport driven roller 19b is constantly in pressure contact with the transport driving roller 19a (counterclockwise direction in FIG. 3).

Next, from the paper feed roller 14 to the transport roller 19
A sheet detector 17 including a sensor body 17a and a detector 17b for detecting the passage of the sheet P is disposed on the sheet P feeding path. The detector 17b has a substantially V shape when viewed from the side, and has a rotating shaft 17c near the center thereof.
3 is provided so as to be rotatable in the clockwise direction and the counterclockwise direction in FIG. 3, and the lower side from the rotating shaft 17c is formed so as to smoothly contact the leading edge of the sheet P proceeding from downstream to upstream at a gentle angle. Has been done.

The sensor body 17a located above the detector 17b includes a light emitting portion (not shown) and a light receiving portion (not shown) for receiving light from the light emitting portion, and the rotating shaft 17c of the detector 17b. The upper part from the above is configured to block and pass the light traveling from the light emitting part to the light receiving part by the rotating operation. Therefore, as shown in FIG. 3, when the detector 17b is rotated so as to be pushed upward with the passage of the sheet P, the upper side of the detector 17b is disengaged from the sensor main body 17a, whereby the light receiving portion is in the light receiving state. Therefore, the passage of the paper P is detected.

Subsequently, downstream of the conveying roller 19, a platen 28 and an ink jet recording head 13 which constitute a recording portion (recording means) of the printer 100 are arranged so as to face each other vertically. The platen 28 is long in the main scanning direction (the front-back direction of the paper surface in FIG. 3), and the paper P conveyed below the inkjet recording head 13 by the conveyance rollers 19.
Are supported from below by the platen 28. The inkjet recording head 13 is provided at the bottom of the carriage 10 on which the ink cartridge 11 is mounted.
0 reciprocates in the main scanning direction while being guided by the carriage guide shaft 12 extending in the main scanning direction.

Next, a paper discharge section (paper discharge means) of the printer 100 is provided downstream from the ink jet recording head 13, and the paper discharge drive roller 20a which is rotationally driven and the paper discharge drive roller 20a are lightly pressed. A paper discharge roller 20 including a paper discharge driven roller 20b that is rotated by being driven is provided, and the paper P printed by the inkjet recording head 13 is nipped by the paper discharge roller 20 and a paper discharge drive roller. 20a is discharged by rotating. The paper discharge driven roller 20b is a paper discharge driven roller holder 23.
The discharge driven roller holder 23 is attached to a discharge driven frame 25. Output subordinate frame 25
Is a plate-like member that is long in the main scanning direction. There is.

Next, 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 drive roller 20a and the driven follower roller 20b is set slightly upstream, and further, the transport drive roller 19a and the transport driven roller 19 are set.
The nip point with b is set slightly downstream. As described above, the sheet P is in a curved state in which it is slightly convex downward between the paper discharge roller 20 and the transport roller 19, and the sheet P positioned below the inkjet recording head 13 is in the platen 28.
The paper P is prevented from floating,
Normal print quality is maintained.

Here, when the trailing edge of the paper P is separated from the transport roller 19, the paper P is pressed against the platen 28 only by the paper discharge roller 20. So in this case,
When the downstream side portion of the paper P drastically hangs downward from the paper discharge roller 20, the paper discharge roller 20 of the paper P is pulled along with this.
Therefore, the upstream side portion is lifted, and normal print quality cannot be obtained. Therefore, in the printer 100, the cutter unit 4 and the sheet discharge stacker 1 described later are configured to prevent the problem.

The cutter unit 4 provided on the downstream side of the paper discharge roller 20 can be attached to and detached from the paper discharge port 6 on the front side of the apparatus main body 3 by a snap means (not shown) as described with reference to FIGS. 1 and 2. It is provided. The cutter unit 4 includes a rotary cutter 43 provided so as to be reciprocally movable in the main scanning direction, a plate member 44 for shearing the paper P by the rotary cutter 43, and a rotary cutter 43.
The paper P is cut by having a guide member 45 that guides the paper P to the back and reciprocating the rotary cutter 43 in the main scanning direction by a drive motor (not shown). The above is the overall configuration of the printer 100.

<Structure and Operation and Effect of Paper Discharge Stacker> Next, the structure and operation and effect of the paper discharge stacker 1 will be described in detail with reference to FIGS. 4 and 5 are side views of the paper discharge stacker 1, FIG. 4 shows a state in which the cutter unit 4 is removed, and FIG. 5 shows a state in which the cutter unit 4 is attached. 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.

First, in FIG. 4, the paper output 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 A thin drawer-shaped second drawer 32 housed in the first drawer 31 and a sheet stopper 33 made of a plate-like member provided at the tip of the second drawer 32. Stacker base 30
The first pull-out portion 31 and the second pull-out portion 32 have a configuration (three-stage configuration) that expands and contracts in the front (paper discharge direction: left side in FIG. 4) and rear (right side in FIG. 4) of the apparatus. .

Upstream of the stacker base 30 (see FIGS. 4 and 5).
The right side of the) has a rotary shaft 30a provided on both side surfaces thereof, and the rotary shaft 30a is pivotally supported by bearing portions (not shown) provided on both side walls inside the paper discharge port 6 (see FIG. 6). As a result, the discharge stacker 1 is attached to the apparatus main body 3. When used, the stacker base portion 30, the first drawer portion 31, and the second
The upper surface of the drawer section 32 and the upper surface of the drawer section 32 form a wide stack surface of the paper P, and when not in use, the second drawer section 32 is the first drawer section 31, and the first drawer section 31 is the stacker base section 30.
It is stored by being pushed into each,
This saves the installation space of the printer 100. Also,
Further, the stacker base 30 is rotated from the stored state to the rotating shaft 30.
By rotating upward about a (clockwise in FIG. 4), the installation space of the printer 100 can be further saved.

As shown in FIG. 7, the stacker base portion 30 has a structure in which a lid portion 30f made of a thin plate is attached to the main body portion 30g by a snap means (not shown). Is designed to be slidable. More specifically, in the main body portion 30g, guide plates 30e, 30e that guide both side surfaces of the first drawer portion 31 and are erected so as to extend in the paper discharge direction are integrally formed with the main body portion 30g. . Then, on the side (inner side) of the guide plates 30e, 30e facing the first drawer portion 31, there is a guide rail upper portion 30b as a ridge extending in the paper discharge direction (left and right direction in FIG. 5), and on the guide rail upper portion. Lower guide rail 3 as a ridge extending parallel to the upper guide rail 30b at a predetermined distance below the lower rail 30b.
0c is integrally formed with the guide plate 30e. Here, the lower guide rail 30c extends longer than the upper guide rail 30b on the downstream side (see also FIGS. 4 and 5).

On the other hand, engaging protrusions 31a having a rectangular shape in a front view are formed near the upstream end (on the right side in FIG. 5) on both side surfaces of the first lead-out portion 31. The engaging protrusion 31a is provided on the guide rail 30b when the first drawer 31 is provided in the stacker base 30.
It is designed to enter between the lower part of the guide rail 30c and the guide rail. 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 provided from the rear end (right end in FIG. 5) of the guide rail upper portion 30b.
Inserted between b and the lower guide rail 30c,
Even if the first pull-out portion 31 is pulled out from the stacker base portion 30, the first pull-out portion 30b remains on the guide rail 30b.
It is held by the main body portion 30g of the stacker base portion 30 by the lower guide race 30c.

In FIG. 7, the protrusions 30d, 30d formed in the main body 30g are stoppers for restricting the maximum pulling-out position of the first pull-out portion 31, and the protrusions 30d, 30d and the first pull-out portion 30d. By engaging the stopper portions 31b and 31b provided on the portion 31, the maximum pull-out position of the first pull-out portion 31 is regulated, so that the first pull-out portion 31 does not fall off the stacker base portion 30. There is.

With the above configuration, the paper discharge stacker 1 has the following operational effects. That is, since the discharge stacker 1 projects toward the front side of the printer 100 when used, and a space is formed between the discharge stacker 1 and the printer installation surface on the lower side (see FIGS. 4 and 5), the stacker stacker 1 from above. When an external force more than necessary is applied, it is easily damaged. Therefore, for example, when the first drawer portion 31 is configured to be held in the main body portion 30g of the stacker base portion 30 from above by the lid portion 30f, the external force is directly applied to the lid portion 30f having low strength, This makes the lid 30f
May come off from the main body portion 30g or the lid portion 30f may be damaged.

However, as described above, in the paper discharge stacker 1 according to the present embodiment, the first drawer portion 31 is the lid portion 3.
The engaging protrusion 3
It is adapted to be supported by the engagement between the guide rail 1a and the upper guide rail 30b. 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 body portion 30g having a high strength prevents the first drawer portion 31 and Since the second drawer portion 32 is supported, it is possible to increase the strength of the paper discharge stacker 1.

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 paper discharge stacker 1 as a whole flexes slightly, but the paper discharge stacker 1 causes the main body of the apparatus to move. The strength is such that the rear side of the apparatus main body 3 can be lifted with the front side of 3 as a fulcrum. Therefore, even when an external force more than necessary is applied to the paper output stacker 1 from above, the paper output stacker 1
The main body 3 of the apparatus is lifted up before the sheet is damaged, so that the sheet stacker 1 can be effectively prevented from being damaged.

Next, the stacking posture of the paper discharge stacker 1 will be described. The paper ejection stacker 1 has two paper ejection postures in a use state in which the paper ejection stacker 1 is pulled out toward the front of the apparatus. FIG. 4 shows the first stacking posture of the paper discharge stacker 1, and FIG. 5 shows the second stacking posture.

In FIG. 4, the discharge stacker 1 is in an inclined posture such that the downstream end (left side in FIG. 4) faces upward,
The sheets P are stacked in this first stacking posture. Here, the inclined posture is formed by the pressing leaf spring 26 as the biasing means shown in FIG. That is, in FIG. 6, the pressing leaf springs 26, 26 are provided on both side walls of the paper discharge port 6.
Is provided so as to project toward the center, and the upstream end of the stacker base 30 is pressed from above by the pressing leaf springs 26, 26 (the arrow in FIG. 4 indicates the action of the spring force). Direction). That is, since the first stack posture is not firmly held, therefore, for example, when an external force more than necessary is applied from above as described above, the discharge stacker 1 is urged by the pressing leaf springs 26, 26. It is possible to obtain an effect that elastically pivots in the horizontal direction, thereby avoiding damage to the paper discharge stacker 1.

The sheets P are stacked in this first stacking posture (inclined posture) for the following reason. That is, the printer 100 uses the paper ejection roller 2 as described above.
0 and the conveying roller 19 bring the paper P into a curved posture so as to be convex downward, and thereby press the paper P against the platen 28, and thus the paper P and the inkjet recording head 13
(See FIG. 3). However, after the trailing edge of the paper P has come off the transport roller 19, only the paper discharge roller 20 regulates the transport attitude of the paper P. Therefore, when a portion of the paper P on the downstream side of the paper discharge roller 20 droops down significantly, the paper P under the inkjet recording head 13 is lifted from the platen 28 due to this effect, and normal print quality cannot be obtained. Therefore, by setting the discharge stacker 1 to the first stacking posture (inclined posture), it is possible to prevent the paper P from drooping significantly downward,
Solving such problems.

Next, when the above-mentioned cutter unit 4 is attached to the paper discharge port 6, the paper discharge stacker 1 in the inclined posture becomes an obstacle. Here, in FIG. 5, the cutter unit 4 is provided with the driving roller 41 and the driven roller 42 as described above, and is provided with a mechanism for feeding the cut paper P (or the case where it is not cut) by these two rollers. There is. Therefore, even if the trailing edge of the paper P is disengaged from the transport roller 19 by the drive roller 41 and the driven roller 42, the vicinity of the downstream side of the paper discharge roller 20 does not hang downward, and therefore the cutter unit 4 is mounted. In this case, it is possible to prevent the problem of the floating of the sheet P from the platen 28 as described above.

Therefore, the paper discharge stacker 1 according to this embodiment.
In addition to the first stacking posture shown in FIG. 4, can take the second stacking posture shown in FIG. In the second stacking posture, when the cutter unit 4 is attached to the paper discharge port 6, the cutter unit 4 rotates the discharge stacker 1 horizontally against the biasing force of the pressing leaf springs 26, 26. And the cutter unit 4 is attached by snap means (not shown). That is, the cutter unit 4 functions as a holding unit that forms the second stack posture of the paper discharge stacker 1. At the upstream end of the stacker base 30, a stopper member 27 is provided at the paper discharge port 6 to prevent the paper discharge stacker 1 from rotating further downward from the horizontal position (FIG. 4). Through FIG. 6), this restricts the sheet discharge stacker 1 from rotating more than necessary in the downward direction.

As described above, the paper discharge stacker 1 according to the present embodiment stacks the paper P in the first stacking attitude in which the papers P are stacked in the tilted attitude and in the horizontal direction from the first stacking attitude. Since the second stack posture and the two postures can be switched,
In the first stacking attitude, the vicinity of the downstream side of the paper P from the paper discharge roller 20 does not droop downward significantly, and normal print quality can be ensured, and in the second stacking attitude, the cutter in the second stacking attitude. The output stacker 1 does not get in the way when the unit 4 is attached. The second stack posture is not limited to the horizontal posture, and the cutter unit 4
Any angle may be used as long as it can be easily mounted.

By the way, 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 sheets P cut and discharged by the cutter unit 4 are discharged. When the paper P is dropped onto the paper stacker 1, the discharged paper P is discharged onto the paper stacker 1.
It may also slip off and stain the printed surface. Even when the paper is not cut by the cutter unit 4, the paper P (cut sheet) may slip off from the paper discharge stacker 1 if the paper discharge stacker is in the second stack posture by mounting the cutter unit 4. is there.

Therefore, the paper discharge stacker 1 according to this embodiment.
Is provided with a paper stopper portion 33 having an inclined surface that is inclined at a steeper angle toward the upstream side of the stack surface in the second stack posture, at the downstream end. As shown in FIG. 5, the paper stopper portion is formed of a plate-like member and is rotatably provided at the tip of the second drawer portion 32 around the rotation fulcrum 33c when the paper discharge path of the paper P is viewed from the side. By turning, it can freely appear and disappear. That is, the state shown in FIG. 4 is the sinking state, and in the sinking state, the front side surface 33a of the sheet stopper portion 33 forms a smooth stack surface of the sheets P together with the top surfaces of the stacker base portion 30 and the first drawer portion 31. In addition, the state shown in FIG. 5 in which the retracted state is rotated in the direction of rising to the upstream side is the exit state, and in the exit state, the back side surface 33b of the sheet stopper portion 33 is in the second
The stack surface of the paper discharge stacker 1 in the stack posture is formed to be steeper than the stack surface. The paper stopper portion 33 has an L-shape in a side view at its end, and when rotated, comes into contact with the stopper 32a formed in the second drawer portion 32 due to the L-shape. The tilt angle in the extended state is regulated by this.

As described above, the sheet P discharged to the sheet stacker 1 does not slide downward from the leading end due to the steep slope of the sheet stopper portion 33 in the ejected state, so that the printing surface of the sheet P is soiled. It is possible to prevent At the same time, since the paper stopper portion 33 is formed by the inclined surface, even when ejecting a long paper P, for example, uncut roll paper, the leading end of the paper is caught at the paper stopper portion 33, and The discharged paper P does not stay on the paper discharge stacker, and the paper P on the paper discharge stacker 33 is prevented from interfering by passing over the paper stopper portion 33, thereby preventing problems such as soiling the printing surface. It becomes possible.

When the sheet stopper portion 33 is unnecessary, for example, when stacking is performed in the first stacking posture (inclined posture), the sheet stopper 33 is set in the retracted state so that it does not interfere with the discharging operation of the sheet P. It becomes possible to do.

[0055]

As described above, according to the present invention, the sheet discharge stacker is rotatably provided, and the first stacking posture for stacking the recording materials in the inclined posture and the first stacking posture. It is configured to be able to switch between two postures, that is, a second stack posture in which the recording material is stacked by rotating in a horizontal direction. Therefore, in the first stacking posture, the downstream side of the recording material does not drastically hang downward from the sheet discharge driving roller, and normal recording quality can be secured, and in the second stacking posture, For example, when the cutter device that cuts the recording material at a predetermined position is attached, the paper output stacker does not get in the way. As described above, it is possible to obtain a paper discharge stacker that does not interfere with the mounting of the detachable cutter device and that can perform an appropriate paper discharging operation even when the cutter device is not mounted.

[Brief description of drawings]

FIG. 1 is an external perspective view of an inkjet 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 inkjet 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 inkjet printer according to the present invention.

FIG. 4 is a side view of the paper discharge stacker according to the present invention, showing 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,
It shows 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]

1 Paper output stacker 2 Paper feeder 3 device body 4 cutter unit 6 Paper exit 13 Inkjet recording head 19 Conveyor roller 20 Paper ejection roller 26 Pressing leaf spring 27 Stopper member 28 Platen 30 Stacker base 31 First drawer 32 Second drawer 33 Paper stopper 100 inkjet printer

Claims (12)

[Claims] 1. A recording section for recording on a recording material, a rotationally driven paper ejection drive roller for ejecting the recording material on which recording has been performed in the recording section, and a paper ejection drive roller. In a recording apparatus including a paper discharge driven roller that nips a recording material between and rotates
A discharge stacker that is provided on the downstream side of the discharge driving roller and stacks discharged recording materials, and has a rotation fulcrum on the upstream side when viewing the discharging path of the recording material. The downstream end has an inclined posture such that it faces upward, and in this inclined posture, the first stack posture in which the recording materials are stacked, and the recording medium is rotated horizontally from the first stack posture to move the recording materials. A discharge stacker configured to be switchable between a stacking second stacking posture and a stacking second stacking posture. 2. The urging means for applying an urging force from the upper side to the upper part on the upstream side from the rotation fulcrum according to claim 1, wherein the first stack posture is dependent on the urging force of the urging means. The second stacking posture is formed by a holding unit that horizontally rotates and holds the sheet discharge stacker against the urging force of the urging unit. Stacker. 3. The paper discharge stacker according to claim 2, wherein the urging means is a leaf spring. 4. The paper ejection stacker according to claim 3, wherein the leaf springs are provided on both side ends of the paper ejection stacker. 5. The holding device according to claim 1, wherein the holding unit is a cutter device that is provided above the paper discharge stacker and cuts a recording material to a predetermined length. Paper output stacker. 6. The paper discharge stacker according to claim 1, wherein the second stack posture is a substantially horizontal posture. 7. The paper discharge stacker according to claim 1, further comprising a stopper member that prevents the paper output stacker from rotating in a downward direction from a substantially horizontal posture. Paper output stacker. 8. The stacker base portion according to claim 1, wherein the stacker base portion is attached to the recording device, and the upper surface of the stacker base portion is a stack surface of the recording material. A stacker that is slidable with respect to the stacker base, the upper surface of which forms the stack surface together with the stacker base by being pulled out, and is housed in the stacker base by being pushed toward the upstream side when not in use. A drawer portion, the stacker base portion is configured 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, on both side surfaces of the stacker drawer portion, Engagement protrusions that project laterally are provided, and guide both side surfaces of the stacker drawer portion in the main body portion. A guide rail that engages with the engagement protrusion is extended in the sliding direction of the stacker drawer portion, and when the stacker drawer portion is pulled out from the stacker base portion, the stacker drawer portion has the engagement protrusion. And a guide rail, which is supported by the main body portion. 9. The method according to claim 1, wherein the tip end on the downstream side is inclined at a steeper angle toward the upper stream side than the angle formed by the horizontal plane and the stack surface for stacking the recording material. A paper discharge stacker, which is provided with a paper stopper portion having an inclined surface. 10. The paper ejection stacker according to claim 9, wherein the paper stopper portion is provided so as to be retractable. 11. The sheet stopper section according to claim 10, wherein the sheet stopper section is a plate-like member that is rotatable around a rotation fulcrum provided at a downstream end portion of the recording material, as viewed from the discharge path of the recording material. , A direction in which the front side of the plate-like body forms a part of the stack surface in a state in which the plate-like body falls down to the downstream side and thereby becomes a sinking state, and the plate-like body rises from the sinking state to the upstream side. A sheet discharging stacker, wherein the back side of the plate-like body forms the inclined surface by being turned to, and thereby the sheet stacker is brought into an ejected state. 12. A recording apparatus for recording on a recording material, comprising the discharge stacker according to any one of claims 1 to 11.