Abstract: A presser member which abuts on a sheet which passes through a sheet conveyance path, and rotates toward a sheet conveyance direction while being pressed by the sheet is provided rotatably in the sheet conveyance path where the sheet conveyed to a sheet stack portion passes, and a move portion to which this presser member is retracted from the sheet conveyance path is provided. When drawing out a jammed sheet from the sheet conveyance path in a direction reverse in a sheet conveyance direction, a jam recovery door is opened, the move portion is operated in connection with this opening motion, and the presser member is retracted from the sheet conveyance path.

Abstract: A sheet processing apparatus includes a first intermediate stacking portion which stacks a conveyed sheet and which performs process to the sheet, a stapler which performs process to the sheet on the first intermediate stacking portion, a second intermediate stacking portion which is located on an upstream side in a conveying direction of the stapler and which is capable of temporarily storing the conveyed sheet, and an intermediate roller pair which conveys the sheet on the second intermediate stacking portion to the first intermediate stacking portion. The sheet stacked on the first intermediate stacking portion and the sheet temporarily stored in the second intermediate stacking portion overlap each other.

Abstract: A sheet conveyed to a sheet stacking portion is conveyed in a direction opposite to a sheet conveyance direction by a returning roller to bring a trailing edge of the sheet into abutment against a reference wall and regulate a trailing edge position of the sheet. A pressure portion which presses the sheet to the reference wall is pivotably provided between the returning roller and the reference wall. The pressure portion presses the sheet conveyed by the returning roller to the reference wall while urging the sheet with a first urging force and, after the sheet comes into abutment against the reference wall, is urged by the urging unit to press the sheet, the trailing edge position of which is regulated by the reference wall, with a second urging force larger than the first urging force to hold the sheet.

Abstract: The present invention provides a sheet stacking apparatus, whose lifting and lowering mechanism having excellent assembly properties and maintenance properties. A sheet stacking apparatus includes: a stacking portion which stacks a discharged sheet thereon; a housing portion which can support the stacking portion so as to lift and lower the stacking portion; and a lifting and lowering mechanism which lifts and lowers the stacking portion. In the sheet stacking apparatus, the stacking portion has a connecting portion which connects the stacking portion to the housing portion. The connecting portion can connect the stacking portion to the housing portion in a direction perpendicular to the lifting and lowering direction of the stacking portion.

Abstract: A sheet processing apparatus includes an intermediate stacking portion which temporarily stacks, thereon, a sheet conveyed thereto; a discharge portion which discharges sheet stacked on the intermediate stacking portion; an aligning member which is provided downstream of the discharge portion in a sheet conveying direction and has a sheet holding surface capable of holding the lower surfaces of the sheet and a sheet aligning surface capable of abutting against end portions of the sheet in the widthwise direction orthogonal to the sheet conveying direction, the aligning member being movable in the widthwise direction; a first stacking portion which is provided below the aligning member and stacks, thereon, a sheet discharged from the discharge portion; and a second stacking portion which is provided above the aligning member and stacks, thereon, a sheet conveyed thereto; wherein a standby position of the aligning member is at a position more inward than the outermost position in the widthwise direction, within

Abstract: Provided is a sheet delivery apparatus for delivering a sheet to a delivery tray, including: a pair of delivery rotary members for nipping and delivering the sheet guided by the guide portion; and a projection that rotates about an axis being the same as an axis of one of the pair of delivery rotary members, is abutted against a trailing end of the sheet, and pushes out the trailing end of the sheet toward a delivery tray side. The guide portion deforms the sheet so that the sheet does not contact the projection, and after the trailing end of the sheet has passed through the guide portion, the projection and the trailing end of the sheet are abutted against each other.

Abstract: An image processing apparatus ejects the sheet to witch image processing unit perform to an ejection tray or a staple stacker by a pair of ejection rollers and the like. A sheet path for guiding the sheet to the ejection rollers is opened and closed in conjunction with slide movement of the ejection tray when the ejection tray is attached to a main body of the apparatus, and the sheet path is opened and closed in conjunction with the slide movement of a staple stacker when the staple stacker is attached to the main body of the apparatus.

Abstract: Provided is a sheet delivery apparatus for delivering a sheet to a delivery tray, including: a pair of delivery rotary members for nipping and delivering the sheet guided by the guide portion; and a projection that rotates about an axis being the same as an axis of one of the pair of delivery rotary members, is abutted against a trailing end of the sheet, and pushes out the trailing end of the sheet toward a delivery tray side. The guide portion deforms the sheet so that the sheet does not contact the projection, and after the trailing end of the sheet has passed through the guide portion, the projection and the trailing end of the sheet are abutted against each other.

Abstract: A sheet processing apparatus includes a first intermediate stacking portion which stacks a conveyed sheet and which performs process to the sheet, a stapler which performs process to the sheet on the first intermediate stacking portion, a second intermediate stacking portion which is located on an upstream side in a conveying direction of the stapler and which is capable of temporarily storing the conveyed sheet, and an intermediate roller pair which conveys the sheet on the second intermediate stacking portion to the first intermediate stacking portion. The sheet stacked on the first intermediate stacking portion and the sheet temporarily stored in the second intermediate stacking portion overlap each other.

Abstract: A sheet conveying apparatus includes a first sheet conveying path, a second sheet conveying path branched from the first sheet conveying path, a switching member capable of moving in the branch portion of the first sheet conveying path and the second sheet conveying path, and a first regulation member and a second regulation member which regulate the movement of the switching member, wherein when the first regulation member is abutted against the switching member, the first regulation member forms a gap having a first interval through which the sheet can pass to the second sheet conveying path, when the switching member is further moved forward, and when the second regulation member is abutted against the switching member, the second regulation member forms a gap having a second interval smaller than the first interval through which the sheet can pass to the second sheet conveying path.

Abstract: A sheet processing apparatus comprises: an first stack portion which temporarily stacks a sheet thereon; a first stack portion which is disposed under the first stack portion and stacks thereon a sheet discharged from the first stack portion; a second stack portion which is disposed above the first stack portion and stacks a sheet thereon; a stack reference wall which serves as an abutment reference at an end of the sheet on the second stack portion; and an alignment reference wall which is disposed more upstream in the sheet conveyance direction than the stack reference wall and serves as an abutment reference at an end of the sheet on the first stack portion; wherein the second stack portion has such a length that an end of the sheet stacked on the first stack portion cannot project from the second stack portion, as viewed from above in a vertical direction.

Abstract: A sheet processing apparatus includes a first intermediate stacking portion which stacks a conveyed sheet and which performs process to the sheet, a stapler which performs process to the sheet on the first intermediate stacking portion, a second intermediate stacking portion which is located on an upstream side in a conveying direction of the stapler and which is capable of temporarily storing the conveyed sheet, and an intermediate roller pair which conveys the sheet on the second intermediate stacking portion to the first intermediate stacking portion. The sheet stacked on the first intermediate stacking portion and the sheet temporarily stored in the second intermediate stacking portion overlap each other.

Abstract: An image processing apparatus ejects the sheet to witch image processing unit perform to an ejection tray or a staple stacker by a pair of ejection rollers and the like. A sheet path for guiding the sheet to the ejection rollers is opened and closed in conjunction with slide movement of the ejection tray when the ejection tray is attached to a main body of the apparatus, and the sheet path is opened and closed in conjunction with the slide movement of a staple stacker when the staple stacker is attached to the main body of the apparatus.

Abstract: A sheet processing apparatus according to an aspect of the invention can process a first-size sheet having a first length and a second-size sheet having a second length smaller than the first length. The sheet processing apparatus includes an intermediate stacking portion on which the sheets are stacked; a stapler which performs a stapling process to the sheets; a second alignment reference wall and a first jogger which align the sheets with a stapling process position; and a second jogger which is moved toward the second alignment reference wall and first jogger. Irrespective of a sheet size, the second jogger is moved toward the second alignment reference wall and first jogger by an alignment distance necessary to align the second-size sheet with a stapling process position, which allows the stapler to staple the sheets with at least one of two staple legs.

Abstract: A pressing member pressed against a sheet stack portion can be moved to both a retracting portion where alignment of the sheet by the aligning portion is not prevented and a pressing position where the aligned sheet S1 is pressed against the sheet stack portion. Moreover, a regulation member for regulating upward movement of the end of the aligned sheet in a conveyance direction can be moved in association with movement of the pressing member to both a retracting portion where alignment of the sheet S1 by the aligning portion is not prevented and a regulating position where upward movement of the end of the aligned sheet S1 in a conveyance direction is regulated.

Abstract: A presser member which abuts on a sheet which passes through a sheet conveyance path, and rotates toward a sheet conveyance direction while being pressed by the sheet is provided rotatably in the sheet conveyance path where the sheet conveyed to a sheet stack portion passes, and a move portion to which this presser member is retracted from the sheet conveyance path is provided. When drawing out a jammed sheet from the sheet conveyance path in a direction reverse in a sheet conveyance direction, a jam recovery door is opened, the move portion is operated in connection with this opening motion, and the presser member is retracted from the sheet conveyance path.

Abstract: A sheet stacking apparatus including a sheet stacking tray for stacking sheets thereon, a first abutting member for abutting against the upper surface of the sheets stacked on the sheet stacking tray, and a second abutting member for abutting the underside of the sheets stacked on the sheet stacking tray, wherein the first abutting member operates in operative association with the operation of the second abutting member.

Abstract: An image processing apparatus ejects the sheet to witch image processing unit perform to an ejection tray or a staple stacker by a pair of ejection rollers and the like. A sheet path for guiding the sheet to the ejection rollers is opened and closed in conjunction with slide movement of the ejection tray when the ejection tray is attached to a main body of the apparatus, and the sheet path is opened and closed in conjunction with the slide movement of a staple stacker when the staple stacker is attached to the main body of the apparatus.

Abstract: A sheet processing device of the invention has an upper conveying guide, being rotatable in the vertical direction, for guiding the upper surface of the sheet, a lower conveying guide, on which the sheets are stacked, for guiding the lower surface of the sheet, upper and lower sheet-discharging rollers, for discharging the sheet, on the downstream side of the upper conveying guide, an arm for shifting the upper sheet-discharging roller in the vertical direction, a cam for pushing the arm upward, a stapler for stapling the sheets stacked on the lower conveying guide, a link portion and a link lever for shifting the upper conveying guide upward when the arm is shifted upward by the cam, a reference wall for receiving the sheets, stacked on the lower conveying guide, and a sheet lift preventing member, which moves away from the sheet when the downstream end of the upper conveying guide is located at the lower position and which holds the sheet when the downstream end of the upper conveying guide is shifted upwar

Abstract: The trailing edge of a sheet delivered to a treating tray for treating the sheet with respect to a delivering direction is made to abut against a trailing edge regulating member to thereby regulate the trailing edge position of the sheet. Next, a sheet delivery lever is reciprocally moved between a first position in which it is retracted to the upstream side of the trailing edge regulating member with respect to the sheet delivering direction and a second position in which it protrudes into the stacking area of the treating tray, to thereby push the trailing edge of the treated sheet and deliver the sheet onto a sheet stacking tray. Also, when this sheet delivery lever is to be moved from the second position to the first position, the sheet delivery lever is moved so as to be capable of passing by the sheet delivered to the treating tray, whereby even during the time when the sheet delivering lever is moved to the first position, the delivery of a succeeding sheet to the treating tray is made possible.