JP6413809B2 - Sheet ejector - Google Patents

Description

  The present invention relates to a sheet discharging apparatus that discharges a sheet.

  For example, in the sheet discharge device described in Patent Document 1, a plurality of discharge trays are arranged in the vertical direction, and the plurality of discharge trays are detachably mounted on a support portion such as a casing.

  In the invention described in Patent Document 1, for example, in a state where the discharge tray on the upper side in the vertical direction of two adjacent discharge trays is detached from the support member, the sheet is discharged from the sheet discharge portion for the removed discharge tray. A discharge mode (hereinafter, also referred to as a stacker mode) that discharges water can be executed.

  For this reason, in the stacker mode, since sheets are placed on the lower discharge tray, more sheets are discharged from the discharge tray for the lower discharge tray than when the sheets are discharged from the discharge tray. It becomes possible to place it on.

Japanese Patent Laid-Open No. 11-228013

  In the stacker mode, as described above, the sheet is discharged from the sheet discharge unit vertically above the discharge tray on which the sheet is placed. For this reason, when the sheet discharged from the sheet discharge unit falls to the discharge tray, the rear end of the sheet collides with or interferes with the discharge roller provided vertically below the sheet discharge unit. There is a high possibility that

  When the falling sheet collides with the discharge roller, the sheet is placed on the discharge tray in a distorted state, so the sheet stacking efficiency is lowered, and it is difficult to place many sheets. Become. That is, the original function of the stacker mode may not be achieved.

  SUMMARY An advantage of some aspects of the invention is that it is possible to suppress a reduction in sheet stackability in the stacker mode.

  In the sheet discharge device for discharging a sheet according to the present application, a first discharge tray (11) on which the discharged sheet is placed and a second discharge tray (12) on which the discharged sheet is placed, A second discharge tray (12) provided vertically above the first discharge tray (11) and a support portion (15) to which at least the second discharge tray (12) is detachably mounted; A support portion in which a first sheet discharge portion (11A) opened toward the tray (11) and a second sheet discharge portion (12A) opened toward the second discharge tray (12) are arranged in the vertical direction. (15), a first upper roller (21A) provided in the first sheet discharge section (11A), and a first upper roller (21A) for discharging the sheet to the first discharge tray (11); 1 Vertical from upper roller (21A) A first lower roller (21B) that is disposed on the lower side and sandwiches the sheet in cooperation with the first upper roller (21A), and at least a part of the outer peripheral surface of the first upper roller (21A) A first lower roller (21B) positioned on the first discharge tray (11) side from the outer peripheral surface, and a second upper roller (22A) provided in the second sheet discharge portion (12A), 2 A second upper roller (22A) that discharges to the discharge tray (12) and a lower side in the vertical direction than the second upper roller (22A) and cooperates with the second upper roller (22A) to sandwich the sheet. The second lower roller (22B), which is the second lower roller (22B) in a position where the first lower roller (21B) is translated upward in the vertical direction, and the first of the support portions (15). Provided vertically above the upper roller (21A) An inclined flange (30) that extends from the first sheet discharge section (11A) side toward the first discharge tray (11) side and descends downward in the vertical direction toward the leading end side in the extending direction. A first discharge tray (11) side of the outer peripheral surface of the first upper roller (21A) as the first outer peripheral surface, and an imaginary vertical line in contact with the first outer peripheral surface as the upper side When the roller tangent (L1) is used, the tip (30A) of the inclined flange (30) reaches at least the upper roller tangent (L1).

  Thereby, in the invention which concerns on this application, the rear end of a sheet | seat does not collide with a 1st upper side roller (21A). In other words, even if the rear end of the sheet collides with the inclined flange portion (30), the first discharge tray so that the rear end of the sheet slides downward along the inclined flange portion (30). Since it falls to the (11) side, it can suppress that the said sheet | seat will be mounted in a 1st discharge tray (11) in the disordered state.

  Also, if the rear end of the sheet collides with the first lower roller (21B), the portion of the first lower roller (21B) with which the rear end collides is the first lower roller (21B). It is the outer peripheral surface of this, Comprising: The circumferential surface which falls to the perpendicular direction downward side.

  Therefore, even when the rear end of the sheet collides with the first lower roller (21B), the lower side along the circumferential surface is the same as when the rear end of the sheet collides with the inclined flange (30). To the first discharge tray (11) side so as to slide down. For this reason, it can suppress that the said sheet | seat is mounted in a 1st discharge tray (11) in the disordered state.

  Therefore, in the invention according to the present application, it is possible to suppress a decrease in sheet stackability in the stacker mode. In addition, the invention which concerns on this application is any of the case where an inclination collar part (30) is provided just above a 1st upper side roller (21A), and the case where it is provided in the position shifted | deviated to the horizontal direction from the said directly above Also good.

  Incidentally, the reference numerals in parentheses for each of the above means are examples showing the correspondence with the specific means described in the embodiments described later, and the present invention is indicated by the reference numerals in the parentheses of the above respective means. It is not limited to specific means.

1 is a perspective view of an image forming apparatus 1 to which a sheet discharge device 10 according to an embodiment of the present invention is mounted. 1 is a perspective view of an image forming apparatus 1 to which a sheet discharging apparatus 10 according to an embodiment of the present invention is mounted, and is a perspective view showing a state in a stacker mode. It is a front view of the 1st discharge part 11A and the 2nd discharge part 12A. It is a perspective view of the 1st discharge part 11A and the 2nd discharge part 12A. It is a vertical sectional view of the first discharge part 11A and the second discharge part 12A.

  The “embodiment of the invention” described below shows an example of the embodiment. In other words, the invention specific items described in the claims are not limited to the specific means and structures shown in the following embodiments.

  In this embodiment, the present invention is applied to a sheet discharge device for an image forming apparatus. Hereinafter, as illustrated in FIG. 1, the image forming apparatus 1 in which the sheet discharging apparatus 10 is assembled is also simply referred to as an “image forming apparatus”.

  The arrows and the like indicating the directions given to the drawings are described for easy understanding of the relationship between the drawings. The present invention is not limited to the directions given in the drawings. At least one member or part described with at least a reference numeral is provided, except where “plurality”, “two or more”, and the like are omitted. Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(First embodiment)
1. Outline of image forming apparatus (see FIG. 1)
The sheet discharge apparatus 10 according to the present embodiment is assembled to the image forming apparatus 1 on the upper side in the vertical direction of the sheet discharge port 2. An image forming unit (not shown) is accommodated in the image forming apparatus 1. The image forming unit forms an image on the sheet. The housing 3 houses the image forming unit.

  A discharge tray 3 </ b> A is provided on the upper surface side in the vertical direction of the housing 3. A sheet on which an image is formed is placed on the discharge tray 3A. The discharge tray 3A is a portion where sheets are discharged when the sheet discharge device 10 does not operate. When the sheet discharge device 10 operates, the sheet is discharged to at least one discharge tray among a plurality of discharge trays 11 to 14 described later.

2. 2. Sheet Discharge Device 2.1 Outline of Sheet Discharge Device The sheet discharge device 10 includes a plurality of discharge trays 11 to 14 as shown in FIG. Then, the sheet discharge device 10 discharges the sheet to any one of the plurality of discharge trays 11 to 14 in accordance with the discharge setting set in advance by the user.

  Each of the discharge trays 11 to 14 is a member on which one or more discharged sheets can be placed. Each discharge tray 11-14 is assembled | attached to the support part 15 in the state located in a line with the perpendicular direction. The discharged sheets are placed on the upper surfaces of the discharge trays 11 to 14 in the vertical direction.

  Hereinafter, among the discharge trays 11 to 14, the lowermost discharge tray in the vertical direction is referred to as a first discharge tray 11. A discharge tray positioned on the upper side in the vertical direction of the first discharge tray 11 is referred to as a second discharge tray 12.

  A discharge tray positioned on the upper side in the vertical direction of the second discharge tray 12 is referred to as a third discharge tray 13. A discharge tray positioned on the upper side in the vertical direction of the third discharge tray 13 is referred to as a fourth discharge tray 14.

  At least the second discharge tray 12 and the fourth discharge tray 14 are assembled to the support portion 15 so as to be detachable from the support portion 15. That is, the user can attach and detach the second discharge tray 12 and the fourth discharge tray 14 to the support portion 15.

  In the present embodiment, the first discharge tray 11 and the third discharge tray 13 have a structure that is less detachable than the second discharge tray 12 and the fourth discharge tray 14. FIG. 2 shows a state in which the second discharge tray 12 and the fourth discharge tray 14 are removed from the support portion 15 (hereinafter referred to as “stacker mode state”).

  The support portion 15 is provided with a plurality of discharge portions 11A to 14A that discharge sheets discharged from the image forming portion, that is, sheets on which images are formed, toward the discharge trays 11 to 14, respectively. Each discharge part 11A-14A is provided along with the perpendicular direction so that it may correspond to a plurality of discharge trays 11-14.

  The discharge unit 11 </ b> A (hereinafter, referred to as the first discharge unit 11 </ b> A) opens toward the upper surface in the vertical direction of the first discharge tray 11. The discharge unit 12 </ b> A (hereinafter, referred to as the second discharge unit 12 </ b> A) opens toward the top surface in the vertical direction of the second discharge tray 12.

  The discharge unit 13 </ b> A (hereinafter, referred to as a third discharge unit 13 </ b> A) opens toward the top surface in the vertical direction of the third discharge tray 13. The discharge unit 14 </ b> A (hereinafter referred to as a fourth discharge unit 14 </ b> A) opens toward the upper surface in the vertical direction of the fourth discharge tray 14.

  As shown in FIG. 3, the first discharge unit 11A is provided with at least one upper roller 21A and at least one lower roller 21B. The second discharge unit 12A is also provided with at least one upper roller 22A and at least one lower roller 22B. In addition, each of the 3rd discharge part 13A and the 4th discharge part 14A is provided with the upper side roller and the lower roller similarly to 11A of 1st discharge parts.

2.2 Upper roller and lower roller The upper roller and the lower roller provided in each of the discharge portions 11A to 14A have the same structure. Hereinafter, the upper roller and the lower roller 22A (hereinafter referred to as the second upper roller 22A) and the lower roller 22B (hereinafter referred to as the second lower roller 22B) provided in the second discharge unit 12A are taken as an example. The structure of the side roller will be described.

  As shown in FIG. 3, in the present embodiment, a plurality of second upper rollers 22A are provided. Each second upper roller 22A is formed in a cylindrical shape or a columnar shape, and is supported by one shaft 22C.

  Each of the second upper rollers 22A is discretely arranged in the width direction in a state where the axial direction thereof coincides with the longitudinal direction of the shaft 22C (hereinafter also referred to as the width direction). The shaft 22C transmits a rotational force to each second upper roller 22A. And the site | part which contacts a sheet | seat among the outer peripheral surfaces of each 2nd upper side roller 22A is comprised with the material with big friction coefficients, such as rubber | gum.

  The same number of second lower rollers 22B as the second upper rollers 22A are provided. As shown in FIG. 4, each second lower roller 22B is arranged vertically below each second upper roller 22A and sandwiches the sheet in cooperation with the second upper roller 22A.

  That is, each of the second lower rollers 22B can be moved away from and relative to the “corresponding second upper roller 22A”, and the “corresponding second upper roller” can be moved by an elastic member (not shown) such as a spring. 22A "side. Therefore, each second lower roller 22B presses the sheet against the “corresponding second upper roller 22A”.

  As shown in FIG. 5, at least a part of the outer peripheral surface 22D of each second lower roller 22B is located closer to the second discharge tray 12 than the outer peripheral surface 22E of each second upper roller 22A. That is, the second discharge tray 12 side end portion of each second lower roller 22B projected onto the virtual horizontal plane is more than the second upper roller 22A second discharge tray 12 end portion projected onto the horizontal plane. 2 located on the discharge tray 12.

  The upper roller 21A (hereinafter referred to as the first upper roller 21A) of the first discharge unit 11A is located at a position that is shifted in the vertical direction with respect to the second upper roller 22A. The lower roller 21B of the first discharge unit 11A (hereinafter referred to as the first lower roller 21B) is located at a position shifted in the vertical direction with respect to the second lower roller 22B.

  That is, if the first upper roller 21A is translated in the vertical direction upward, the moved first upper roller 21A overlaps the second upper roller 22A at least in the front-rear direction. The front-rear direction substantially coincides with the sheet discharge direction.

  Similarly, if the first lower roller 21B translates upward in the vertical direction, the moved first lower roller 21B overlaps the second lower roller 22B at least in the front-rear direction. For this reason, at least a part of the outer peripheral surface 21D of each first lower roller 21B is positioned closer to the first discharge tray 11 than the outer peripheral surface 21E of each first upper roller 21A.

  Note that the arrangement relationship of the upper rollers provided in the third discharge unit 13A and the fourth discharge unit 14A is the same as the arrangement relationship of the second upper rollers 22A with respect to the first upper rollers 21A. Similarly, the arrangement relationship of the lower rollers provided in each of the third discharge unit 13A and the fourth discharge unit 14A is the same as the arrangement relationship of the second lower rollers 22B with respect to the first lower rollers 21B.

2.3 Inclined collar portion As shown in FIG. 5, at least one inclined collar portion 30 is provided on the support portion 15 at least vertically above the first upper roller 21 </ b> A. The inclined flange portion 30 extends from the first discharge portion 11A side toward the first discharge tray 11 side, and is inclined so as to descend downward in the vertical direction toward the distal end side in the extending direction.

  The inclined flange 30 according to the present embodiment is provided on the holding frame 15 </ b> A that holds the second lower roller 22 </ b> B and the like of the support portion 15. The holding frame 15A and the inclined flange 30 are integrally formed with resin together with the reinforcing rib 30B.

  The tip 30A of the inclined flange 30 reaches at least the upper roller tangent L1. In the present embodiment, the tip 30A of the inclined flange 30 reaches at least the lower roller tangent L2 beyond the upper roller tangent L1.

  The upper roller tangent L1 refers to a virtual vertical line in contact with the first outer peripheral surface when the first discharge tray 11 side of the outer peripheral surface of the first upper roller 21A is the first outer peripheral surface. In FIG. 5, the first outer peripheral surface corresponds to the right outer peripheral surface of the outer peripheral surfaces of the first upper roller 21A.

  The lower roller tangent L2 refers to a virtual vertical line in contact with the second outer peripheral surface when the first discharge tray 11 side of the outer peripheral surface of the first lower roller 21B is the second outer peripheral surface. In FIG. 5, the second outer peripheral surface corresponds to the right outer peripheral surface among the outer peripheral surfaces of the first lower roller 21B.

  At least one reinforcing rib 30B is provided on the upper surface 30C side in the vertical direction of the inclined flange portion 30. The reinforcing rib 30B is a ridge-shaped member extending from the holding frame 15A side toward the tip 30A side of the inclined flange 30.

  The projecting dimension H from the upper surface 30C of the reinforcing rib 30B becomes smaller as it approaches the tip 30A. In the present embodiment, a plurality of reinforcing ribs 30B are provided. These reinforcing ribs 30B are discretely provided at predetermined intervals along the width direction.

  At least one static elimination member 31 is attached to the lower surface side of the inclined flange 30. The static elimination member 31 is a brush-like member made of conductive fiber that removes static electricity charged on the sheet. The charge removal member 31 extends to the first discharge tray 11 side beyond the tip 30A of the inclined flange 30.

  A plurality of static elimination members 31 according to the present embodiment are provided as shown in FIG. And each static elimination member 31 is comprised by the strip shape, and is discretely arrange | positioned for every predetermined interval along the width direction.

  The inclined flange 30 is disposed at a position where at least a part of the second upper roller 22A overlaps in the width direction. In other words, as shown in FIG. 4, the inclined flange part 30 according to the present embodiment is configured to include a first inclined flange part 30 </ b> D and a second inclined flange part 30 </ b> E that extend in the width direction.

  The inclined flange 30 (the first inclined flange 30D and the second inclined flange 30E) projected onto the virtual horizontal plane overlaps at least a part of each second upper roller 22A projected onto the virtual horizontal plane.

  In other words, if the inclined flange 30 (the first inclined flange 30D and the second inclined flange 30E) is translated upward in the vertical direction, the translated inclined flange 30 is moved to each second upper roller. It overlaps at least a part of 22A.

  In the present embodiment, the inclined flange 30 (including the charge removal member 31) is also provided on the upper side in the vertical direction of the second upper roller 22A and on the upper side in the vertical direction of the upper roller provided in the third discharge portion 13A. An inclined flange (not shown) having a shape and a size is provided.

  In other words, an inclined flange (not shown) provided on the upper side in the vertical direction of the second upper roller 22A extends to the lower roller tangent to the second lower roller 22B. An inclined flange portion (not shown) extends vertically above the upper roller provided in the third discharge portion 13A to the lower roller tangent to the upper roller.

  A plurality of reinforcing ribs having the same shape as the reinforcing rib 30B are provided on the upper surfaces of the inclined flange portions, and a plurality of static eliminating members 31 having the same shape as the charge eliminating member 31 are provided on the lower surface of the inclined flange portions. Is provided.

3. Features of Image Forming Apparatus (Particularly Sheet Discharge Device) According to this Embodiment In this embodiment, an inclined flange 30 is provided on the upper side in the vertical direction of the first upper roller 21A, and the tip 30A of the inclined flange 30 is at least It has reached the upper roller tangent L1.

  Thereby, in this embodiment, the rear end of the sheet does not collide with the first upper roller 21A. That is, even if the trailing edge of the sheet collides with the inclined flange 30, the trailing edge of the sheet falls to the first discharge tray 11 side so as to slide down along the inclined flange 30. Therefore, it can be suppressed that the sheet is placed on the first discharge tray 11 in a disordered state.

  If the rear end of the sheet collides with the first lower roller 21B, the portion of the first lower roller 21B where the rear end collides is the outer peripheral surface of the first lower roller 21B. This is a circumferential surface that descends vertically downward.

  For this reason, even when the rear end of the sheet collides with the first lower roller 21B, it slides downward along the circumferential surface in the same manner as when it collides with the inclined flange 30. It falls to the first discharge tray 11 side. For this reason, it can suppress that the said sheet | seat will be mounted in the 1st discharge tray 11 in the disordered state.

Therefore, in the present embodiment, it is possible to suppress a decrease in sheet stackability in the stacker mode.
In the present embodiment, the tip 30A of the inclined flange 30 reaches at least the lower roller tangent L2. Thus, the trailing edge of the sheet does not collide with the first lower roller 21B in addition to the first upper roller 21A. Therefore, it is possible to reliably suppress the sheet stackability from being lowered in the stacker mode.

  In the present embodiment, a static elimination member 31 that removes static electricity charged on the sheet is mounted on the lower surface side of the inclined flange 30. Accordingly, it is possible to smoothly slide down the sheet as compared with the configuration in which the static elimination member 31 is attached to the upper surface side of the inclined flange portion 30.

  That is, if the static elimination member 31 is affixed to the upper surface side of the inclined collar part 30, a level | step difference will generate | occur | produce in the site | part where the static elimination member 31 was affixed. For this reason, when the sheet falls, the rear end of the sheet may be caught by the step.

  On the other hand, in this embodiment, since the above-described step does not occur in the inclined flange portion 30, the sheet can be smoothly slid down. And since the static elimination member 31 is a brush-like member which can be elastically deformed, even if the static elimination member 31 and a sheet | seat contact, it can suppress that the said sheet | seat is damaged.

  In the present embodiment, the charge removal member 31 extends to the first discharge tray 11 side beyond the tip 30A of the inclined flange 30. Thereby, the back surface side of the sheet can be neutralized, and the neutralizing member 31 can be used as a part of the inclined flange 30.

  In addition, the extension direction of the static elimination member 31 is (a) the direction parallel to the inclined flange 30 or (b) the direction inclined downward in the vertical direction from the inclined flange 30, that is, the depression angle of the inclined flange 30. A direction with a large depression angle is desirable. And if it is set as the extending direction like (a) or (b), it will become possible to slide down a sheet | seat smoothly.

  In the present embodiment, the reinforcing rib 30B is provided on the upper surface side of the inclined flange portion 30, and the protruding dimension H of the reinforcing rib 30B decreases as it approaches the tip 30A of the inclined flange portion 30. .

  Thereby, the intensity | strength of the inclination collar part 30 can be raised. And since the sheet | seat which has fallen contacts the front-end | tip of the reinforcement rib 30B, compared with the case where a sheet | seat contacts the whole upper surface of the inclination collar part 30, a frictional resistance can be made small. Therefore, the sheet can be smoothly slid down.

  The inclined flange 30 is characterized in that it is disposed at a position where at least a portion thereof overlaps each second upper roller 22A in the width direction. As a result, at least the vertical upper side of the first upper roller 21A is covered with the inclined flange 30, so that the rear end of the sheet does not collide with the first upper roller 21A.

  Note that the same action and effect as described above are obtained with respect to the vertical upper inclined flange portion of the second upper roller 22A and the inclined vertical portion provided on the upper side of the upper roller provided in the third discharge portion 13A. be able to.

(Other embodiments)
In the above-described embodiment, four discharge trays are provided. However, the present invention is not limited to this, and it is sufficient that at least two discharge trays are provided.

  The inclined flange portion 30 according to the above-described embodiment is integrally formed with the holding frame 15A. However, the present invention is not limited to this, and the support portion 15 is manufactured by a fastener such as a screw after being manufactured separately. May be integrated.

  The inclined saddle portion 30 according to the above-described embodiment is configured by a rigid body like the holding frame 15A. However, the present invention is not limited to this, and for example, the static eliminating member 31 can The unit 30 may be configured.

  The inclined collar portion 30 according to the above-described embodiment is provided with the static eliminating member 31 that extends to the first discharge tray 11 side beyond the tip 30A of the inclined collar portion 30, but the present invention is limited to this. Instead, for example, the static elimination member 31 may be provided in another part.

  Moreover, although the static elimination member 31 which concerns on the above-mentioned embodiment was a brush-shaped member, this invention is not limited to this, For example, the rigid body comprised with conductive resin etc. may be sufficient. .

DESCRIPTION OF SYMBOLS 1 ... Image forming apparatus 2 ... Paper discharge port 3 ... Housing | casing 3A ... Discharge tray 10 ... Sheet discharge device 11 ... 1st discharge tray 11A ... 1st discharge part 12 ... 2nd discharge tray 12A ... 2nd discharge part 15 ... Support Part 15A ... Holding frame 21A ... First upper roller 21B ... First lower roller 22A ... Second upper roller 22B ... Second lower roller 30 ... Inclined flange 30B ... Reinforcement rib 31 ... Static elimination member

Claims (6)

In the sheet discharge device for discharging the sheet,
A first discharge tray on which discharged sheets are placed;
A second discharge tray on which the discharged sheets are placed, the second discharge tray provided above the first discharge tray in the vertical direction;
A support portion to which at least the second discharge tray is detachably mounted; a first sheet discharge portion that opens toward the first discharge tray; and a second sheet discharge that opens toward the second discharge tray. A support part provided with parts arranged in a vertical direction;
A first upper roller provided in the first sheet discharge section, wherein the first upper roller discharges the sheet to the first discharge tray;
A first lower roller that is disposed vertically below the first upper roller and sandwiches the sheet in cooperation with the first upper roller, wherein at least a part of an outer peripheral surface of the first upper roller; A first lower roller located closer to the first discharge tray than an outer peripheral surface;
A second upper roller provided in the second sheet discharge unit, wherein the second upper roller discharges the sheet to the second discharge tray;
A second lower roller disposed on the lower side in the vertical direction than the second upper roller and sandwiching the sheet in cooperation with the second upper roller, wherein the first lower roller translates vertically upward A second lower roller in the position
An inclined collar portion extending from a position vertically above the first upper roller in the support portion, extending from the support portion toward the downstream side in the sheet discharging direction of the first upper roller, and extending in the extending direction. With an inclined saddle that descends downward in the vertical direction toward the side,
Of the outer peripheral surface of the first upper roller, when the first discharge tray side is the first outer peripheral surface, and the virtual vertical line in contact with the first outer peripheral surface is the upper roller tangent, the upper roller tangent is A sheet discharging apparatus that passes through the inclined flange portion . Wherein said first discharge tray side of the outer peripheral surface of the first lower roller and a second outer circumferential surface, and, when the imaginary vertical line which is in contact with the second outer peripheral surface and the lower roller tangent, the lower roller The sheet discharging apparatus according to claim 1 , wherein a tangent line passes through the inclined flange portion .   The sheet discharging apparatus according to claim 1, wherein a neutralizing member for removing static electricity charged on the sheet is attached to a lower surface side of the inclined flange portion.   The sheet discharging apparatus according to claim 3, wherein the charge removal member extends to a side of the first discharge tray beyond a tip of the inclined flange portion. On the upper surface side of the inclined flange portion, a ridge-shaped reinforcing rib extending to the distal end side of the inclined flange portion is provided,
5. The sheet discharge device according to claim 1, wherein a protruding dimension of the reinforcing rib from the upper surface in a direction perpendicular to the upper surface becomes smaller as approaching the tip. 6. When the direction parallel to the axial direction of the first upper roller is the width direction,
6. The sheet discharge device according to claim 1, wherein the inclined flange portion is disposed at a position at least partially overlapping with the second upper roller in the width direction.

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