JP2016137999A5 - - Google Patents

Description

The present invention aims to provide an image forming apparatus having a sheet discharging apparatus, and this can be prevented that the sheet over preparative processing apparatus is erroneous mounting.

A sheet discharge apparatus according to an aspect of the present invention includes an apparatus main body, discharge means for conveying a sheet in the sheet discharge direction and discharging the sheet, and a stacking surface on which the sheets discharged by the discharge means are stacked. A sheet stacking unit capable of mounting a sheet processing apparatus for processing a sheet discharged by the discharging unit, and a detachable unit detachably attached to the apparatus main body, the width direction intersecting the sheet discharging direction by pressing the sheet and the pressing part to bend the sheet in front Symbol device the projecting downstream than the pressing portion in the sheet discharging direction from the body, the projecting portion provided at least partially overlap a position on the loading surface when viewed from the vertical direction characterized in that it and a detachable unit that chromatic and.
A sheet discharge apparatus according to another aspect of the present invention includes an apparatus main body, discharge means for conveying a sheet in the sheet discharge direction and discharging the sheet, and a stacking surface on which the sheets discharged by the discharge means are stacked. A sheet stacking unit capable of mounting a sheet processing apparatus that processes a sheet discharged by the discharge unit, and a detachable unit that is detachable from the apparatus main body, and presses the sheet and intersects the sheet discharging direction. A detachable unit having a pressing portion that bends the sheet in the width direction, and at least a part of the detachable unit is a space occupied by the sheet processing apparatus if the sheet processing apparatus is mounted on the sheet stacking unit. It is characterized by having invaded.

An image forming apparatus according to another aspect of the present invention, an apparatus main body, an image forming unit that forms an image on a sheet, and a sheet on which an image is formed by the image forming unit is conveyed and discharged in the sheet discharging direction. A sheet stacking unit having a stacking surface on which the sheets discharged by the discharge unit are stacked, and the apparatus body presses the sheet in a width direction intersecting the sheet discharge direction. Yes and the pressing part to bend, the projecting from the main body downstream from the pressing portion in the sheet discharging direction, and a protruding portion provided on at least part of that heavy Do located on the loading surface when viewed from the vertical direction and, it is possible mounting a detachable unit that imparts rigidity to the sheet to be discharged by said discharge means, in the sheet stacking means, removable from said detachable unit is the device body In state, it can be mounted a sheet processing apparatus for processing discharged sheet by the discharging means, characterized in that.

According to the present invention, it is possible to prevent the sheet over preparative processing apparatus is erroneous mounting.

1: Sheet discharge roller pair (discharge means) 2: Rigidity imparting unit ( detachable unit ) 3: Engagement piece (engaged part, first engaged part) 4: Recessed part (second engaged part) Part), 5: positioning piece (second engaged part), 21: rigidity imparting frame (frame), 21c: extension end part (second engaging part), 21d: hook (engaging part, first engaging part) Part), 21e: positioning protrusion (second engaging part), 22: sheet pressing lever (swinging part), 23: sheet pressing roller (pressing part), 24: compression spring (biasing member), 28: protrusion Part, 28a, 28b: inclined surface, 100: printer (image forming apparatus), 100A: apparatus main body, 150: image forming part (image forming means), 160: fixing device (image forming means), 170: sheet discharging apparatus, 180: sheet discharge tray (sheet stacking means), 180a: sheet stacking surface (stacking surface) , D: sheet discharging direction, E: width

Claims (18)

The device body;
Discharging means for conveying the sheet in the sheet discharging direction and discharging the sheet ;
A sheet stacking unit having a stacking surface on which the sheets discharged by the discharging unit are stacked, and capable of mounting a sheet processing apparatus that processes the sheets discharged by the discharging unit;
A detachable detachable unit to the apparatus main body, and the pressing part to bend the sheet in the width direction crossing the sheet discharging direction to press the sheet, than before Symbol the pressing portion in the sheet discharging direction from the apparatus main body a detachable unit that protrudes in the downstream, to have a a protruding portion provided at least partially overlap a position on the loading surface when viewed from the vertical direction,
A sheet discharging apparatus comprising: One side portion in the width direction of the protruding portion has an inclined surface inclined toward the other side in the width direction toward the downstream in the sheet discharge direction.
The sheet discharging apparatus according to claim 1. Both side portions of the protrusion in the width direction have inclined surfaces that are inclined so as to approach each other in the width direction toward the downstream in the sheet discharge direction.
The sheet discharging apparatus according to claim 1. The projecting portion has a contour that forms a convex convex curve downstream in the sheet discharge direction when viewed from above, and the convex curve is configured by a polygonal shape or a smooth curve in which adjacent line segments form an obtuse angle.
The sheet discharging apparatus according to claim 1. The stacking surface has a support portion that contacts and supports the bottom of the sheet processing apparatus,
The protrusion is a flat plate-like member parallel to the support.
The sheet discharging apparatus according to any one of claims 1 to 4. The detachable unit has an engaging portion,
The device main body has an engaged portion for restricting the detachable unit from being detached from the device main body by being engaged with the engaging portion,
At least one of the engaging part and the engaged part is capable of releasing the engagement between the engaging part and the engaged part by elastic deformation.
The sheet discharging apparatus according to any one of claims 1 to 5. The engaging portion includes a first engaging portion and a second engaging portion,
The engaged portion includes a first engaged portion engaged with the first engaging portion and a second engaged portion engaged with the second engaging portion,
The first engaging portion is elastically deformed and engaged with the first engaging portion in the mounting operation of attaching to the apparatus main body by moving the detachable unit upstream in the sheet discharging direction,
In the mounting operation, the second engaging portion engages with the second engaged portion in parallel with the engagement of the first engaging portion and the first engaged portion, so that the detachable unit Positioning,
The sheet discharging apparatus according to claim 6. The protrusion is penetrated into the space that will be occupied by the sheet processing apparatus if the sheet processing apparatus is mounted on said sheet stacking means,
The sheet discharging apparatus according to any one of claims 1 to 7 .   The device body;
  Discharging means for conveying the sheet in the sheet discharging direction and discharging the sheet;
  A sheet stacking unit having a stacking surface on which the sheets discharged by the discharging unit are stacked, and capable of mounting a sheet processing apparatus that processes the sheets discharged by the discharging unit;
  A detachable unit that is detachable from the apparatus main body, and includes a detachable unit that has a pressing portion that presses the sheet and bends the sheet in the width direction intersecting the sheet discharging direction.
  At least a part of the detachable unit has entered the space occupied by the sheet processing apparatus if the sheet processing apparatus is mounted on the sheet stacking unit.
  A sheet discharging apparatus characterized by that.   The detachable unit has an operation unit that is operated when the detachable unit is removed from the apparatus main body.
  The sheet discharging apparatus according to claim 9.   The detachable unit has an elastically deformable engagement portion, and the operation portion is a part of the engagement portion.
  The device main body has an engaged portion that restricts the detachable unit from being detached from the device main body by being engaged with the engaging portion.
  The engaging portion is elastically deformed when the operation portion is pressed and is disengaged from the engaged portion so that the detachable unit can be detached from the apparatus main body. Configured to,
  The sheet discharging apparatus according to claim 10.   In a state where the detachable unit is mounted on the apparatus main body, at least a part of the pressing portion is located inside the apparatus main body.
  The sheet discharging apparatus according to any one of claims 1 to 11. The pressing portion is composed of a roller member that can rotate in contact with the sheet.
The sheet discharging apparatus according to any one of claims 1 to 12 . The discharge means includes a plurality of roller pairs that respectively form nips for nipping and conveying the sheet,
The detachable unit is one of a plurality of detachable units provided in the sheet discharge unit,
And said plurality of detachable unit with said plurality of roller pairs is, exchange Ru mutually arranged Tei Te the width direction odor,
Sheet discharging device according to any one of claims 1 to 1 3. The detachable unit has a biasing member that biases the pressing portion so as to displace the sheet in the thickness direction and press-contacts the sheet.
The biasing member creates a small displacement when the discharging means discharges a high-rigidity sheet having high rigidity, compared to discharging a low-rigidity sheet having lower rigidity than the high-rigidity sheet.
Sheet discharging device according to any one of claims 1 to 1 4. The detachable unit has a frame supported by the apparatus main body, and a swinging part that supports the pressing part and swings in the sheet thickness direction with respect to the frame.
The biasing member is a compression spring that is contracted between the frame and the swinging portion.
Sheet discharging device according to claim 1 5. Image forming means for forming an image on a sheet;
The sheet discharging apparatus according to any one of claims 1 to 16 , wherein the sheet on which an image is formed by the image forming unit is discharged.
An image forming apparatus comprising: The device body;
Image forming means for forming an image on a sheet;
A discharge unit that conveys and discharges the sheet on which the image is formed by the image forming unit in the sheet discharge direction ;
Sheet stacking means having a stacking surface on which sheets discharged by the discharge means are stacked,
The apparatus main body includes a pressing portion that presses the sheet and bends the sheet in a width direction intersecting the sheet discharging direction, and protrudes downstream from the pressing section in the sheet discharging direction from the apparatus main body , and is viewed from above and below. wherein at least a portion on the loading surface and a projecting portion provided on that heavy Do position, it is possible mounting a detachable unit that imparts rigidity to the sheet to be discharged by said discharge means Te,
The sheet stacking unit can be mounted with a sheet processing apparatus that processes the sheet discharged by the discharging unit in a state where the detachable unit is detached from the apparatus main body.
An image forming apparatus.