A sheet feeding apparatus includes a first sheet storage portion and a second sheet storage portion disposed side by side with the first sheet storage portion. The sheet feeding device includes a sheet bundle moving member configured to transfer sheets in the second sheet storage portion to the first sheet storage portion and a pickup roller configured to feed the sheet by abutting against the sheet stored in the first sheet storage portion. When transferring the sheet bundle in the second sheet storage portion to the first sheet storage portion, the pickup roller is rotated in the same direction as that during feeding.

In an image forming apparatus including an apparatus body, an image forming portion, a conveyance unit, a storage portion, a sheet movement unit, a memory portion, and a control portion, in a case where an image forming instruction to perform image formation on a sheet has been received, the control portion provides notification of a plurality of discharging methods of storing the sheet which is an object of the image forming instruction, into the storage portion and then exposing the sheet outside of the apparatus body via an opening of the storage portion, based on first information stored in the memory portion and second information about the sheet which is an object of the image forming instruction, and controls the conveyance unit and the sheet movement unit based on a discharging method selected from among the plurality of discharging methods.

A post-processing device includes a first discharge section that discharges a medium subjected to recording by a recording device, a first tray on which the medium discharged by the first discharge section is mounted, a post-processing section that performs post-processing on the medium mounted on the first tray, a pressing section configured to perform a leading-end pressing operation of lowering a leading end of the medium by pressing the medium discharged by the first discharge section, and a control section that controls the pressing section, in which the control section performs the leading-end pressing operation after the medium is mounted on the first tray.

An image forming apparatus includes an image forming portion, a sheet discharging portion, and a sheet stacking portion. The stacking portion includes a first member including an inclined surface inclined upward toward a downstream side of a sheet discharging direction, and a second member including a stacking surface which projects upward from the inclined surface and on which the discharged sheet is stacked. The second member is rotatable relative to the first member about a supporting point provided upstream of the stacking surface with respect to the sheet discharging direction. The second member is rotatable about the supporting point in a direction in which the stacking surface moves downward in accordance with an increase in number of sheets stacked on the stacking surface.

An image forming apparatus includes an image forming portion, a sheet discharging portion, and a sheet stacking portion. The stacking portion includes a first member including an inclined surface inclined upward toward a downstream side of a sheet discharging direction, and a second member including a stacking surface which projects upward from the inclined surface and on which the discharged sheet is stacked. The second member is rotatable relative to the first member about a supporting point provided upstream of the stacking surface with respect to the sheet discharging direction. The second member is rotatable about the supporting point in a direction in which the stacking surface moves downward in accordance with an increase in number of sheets stacked on the stacking surface.

A sheet processing apparatus includes: a tray on which conveyed sheets are stacked one by one; a restricting member provided at one end of the tray; a paddle member provided so as to be able to ascend and descend on the tray and configured to abut and align one end of the sheet against the restricting member by rotating in contact with the conveyed sheet; and a controller that determines a height position of the paddle member on the tray based on the number of sheets stacked on the tray and sheet information of the sheet to be conveyed, and controls the height position of the paddle member.

A sheet processing apparatus includes an insertion portion, a sheet processing device, and a position marker. The insertion portion has an opening into which a sheet is insertable. The sheet processing device performs a predetermined operation onto the sheet inserted into the insertion portion. The position marker forms a mark at a processing position at which the predetermined operation is to be performed onto the sheet.

A post-processing device includes an alignment section on which a plurality of recording media are stacked, a medium receiving section to which a plurality of recording media are discharged, a conveyance section that conveys a stack of a plurality of recording media stacked on the alignment section to the medium receiving section, and a single drive section that drives the conveyance section, wherein the conveyance section includes a gripping part that grips the plurality of recording media stacked on the alignment section, a gripping-part conveyance section that moves the gripping part in a state of gripping the plurality of recording media in a sheet ejection direction directed from the alignment section toward the medium receiving section, and a reciprocation mechanism that reciprocates the gripping-part conveyance section in a direction parallel to the sheet ejection direction.

A sheet processing apparatus includes a shift unit including a pair of first conveying rollers that nip and convey a sheet and being able to move in a width direction orthogonal to a conveyance direction of the sheet in a state of nipping the sheet; a drive gear configured to transmit a driving force from a drive motor; a rack gear including a rack portion that meshes with the drive gear, the rack gear being configured to receive the driving force from the drive gear via the rack portion and, thereby, move the shift unit in the width direction in a state of nipping the sheet with a pair of first conveying rollers; a guide member configured to guide movement of the shift unit in the width direction; and a supporting member configured to nip the rack gear between the supporting member and the drive gear and support the rack gear, in which the rack gear is rotatable with respect to the shift unit on a plane parallel to the conveyance direction and the width direction.