A sheet stacking tray that includes a single pneumatic baffle which uses the pressure differential caused by the flow of air across a horizontal planar surface of the pneumatic baffle to hold the lead edge of sheets driven by an input nip into the sheet stacking tray above a stack especially for longer and lighter weight sheets as they are driven by the input nip to a registration wall.

A sheet processing apparatus includes a stacking section provided on the downstream side of a collecting section in a transport direction outside an apparatus housing, an alignment section provided on the downstream side of the collecting section in the transport direction, above the stacking section, to be able to shift in a predetermined movable region so as to align a sheet width direction orthogonal to the transport direction of the sheet to be stacked on the stacking section, a shaft-direction drive mechanism for shifting the alignment section in the width direction orthogonal to the transport direction, an alignment plate rotation shaft member for axially supporting the alignment section rotatably, a shaft-direction drive source for operating the shaft-direction drive mechanism, and a neat housing for storing the shaft-direction drive mechanism and the alignment plate rotation shaft member inside the housing.

Disclosed is a sheet stacking apparatus which includes a first stacking portion on which a sheet is stacked, a second stacking portion which is movable with respect to the first stacking portion, a third stacking portion which is detachably attachable to the first stacking portion or the second stacking portion and a restricting portion which restricts disengagement of the third stacking portion which has been attached. The second stacking portion is movable such that the second stacking portion is located at a first position where the restricting portion does not restrict disengagement of the third stacking portion and a second position where the restricting portion restricts disengagement of the third stacking portion which has been attached.

Disclosed is a sheet stacking apparatus which includes a first stacking portion on which a sheet is stacked, a second stacking portion which is movable with respect to the first stacking portion, a third stacking portion which is detachably attachable to the first stacking portion or the second stacking portion and a restricting portion which restricts disengagement of the third stacking portion which has been attached. The second stacking portion is movable such that the second stacking portion is located at a first position where the restricting portion does not restrict disengagement of the third stacking portion and a second position where the restricting portion restricts disengagement of the third stacking portion which has been attached.

A discharge tray has a frame, a first tray, a second tray, and an angle switching member. The first tray has a sheet-discharge-direction downstream side inclined upward. The second tray is movable, along a pair of wall portions on the frame, to a first position where at least part of the second tray overlaps the first tray, a second position to which the second tray extends toward the sheet-discharge-direction downstream side, and a third position to the sheet-discharge-direction downstream side of the second position where the second tray is rotatable. As the second tray moves, the angle switching member moves. At the third position, the angle switching member rotates through a predetermined angle and is held by the wall portions. The angle switching member supports the second tray at a second inclination angle smaller than a first inclination angle when the second tray is at the second position.

A discharge tray has a frame, a first tray, a second tray, and an angle switching member. The first tray has a sheet-discharge-direction downstream side inclined upward. The second tray is movable, along a pair of wall portions on the frame, to a first position where at least part of the second tray overlaps the first tray, a second position to which the second tray extends toward the sheet-discharge-direction downstream side, and a third position to the sheet-discharge-direction downstream side of the second position where the second tray is rotatable. As the second tray moves, the angle switching member moves. At the third position, the angle switching member rotates through a predetermined angle and is held by the wall portions. The angle switching member supports the second tray at a second inclination angle smaller than a first inclination angle when the second tray is at the second position.

A sheet post-processor includes a processing tray, a sheet discharge port, a discharge roller pair, a pair of cursor members, a pair of support members, and an interlocking mechanism. The interlocking mechanism includes a pair of coupling members arranged in the processing tray so as to be reciprocatable in a sheet width direction. The pair of coupling members are coupled to or decoupled from the pair of cursor members in accordance with movement of the pair of cursor members. While being coupled to the pair of cursor members, the pair of coupling members contact the pair of support members so as to displace the pair of support members to a protruding position, and while being decoupled from the pair of cursor members, the pair of coupling members separate from the pair of support members so as to displace the pair of support members to a retracted position.

An image reading apparatus includes an original tray, an original feeding portion, an original reading portion, an original discharging portion, an original discharge tray, an extension tray, and a rotation guide. A stacking surface of the original discharge tray is provided with an opening through which the rotation guide is capable of passing when the rotation guide rotates from a first position to a second position. In a state in which the extension tray is held at a pulled-out position, the rotation guide is rotatable relative to the extension tray from the first position toward the second position. In a state in which the extension tray is held at an accommodated position, the rotation guide is rotatable from the first position toward the second position by passing through the opening.

An image reading apparatus includes an original tray, an original feeding portion, an original reading portion, an original discharging portion, an original discharge tray, an extension tray, and a rotation guide. A stacking surface of the original discharge tray is provided with an opening through which the rotation guide is capable of passing when the rotation guide rotates from a first position to a second position. In a state in which the extension tray is held at a pulled-out position, the rotation guide is rotatable relative to the extension tray from the first position toward the second position. In a state in which the extension tray is held at an accommodated position, the rotation guide is rotatable from the first position toward the second position by passing through the opening.

A transport apparatus includes a mounting section on which a medium is to be mounted, a drive section configured to drive the mounting section in a moving direction and a protection section configured to be switched between a protection state for protecting the drive section and a release state for releasing protection of the drive section. The mounting section has a driven section that engages with the drive section and is driven by the drive section. When the driven section driven by the drive section engages with the drive section, the protection section is in the release state, and when the driven section does not engage with the drive section, the protection section is in the protection state.