A medium discharge device includes a discharge roller pair that is provided with a discharge driving roller and a discharge driven roller which drivably rotates in contact with the discharge driving roller, and a medium receiving tray which receives the medium that is fed and discharged by the discharge roller pair, in which the medium receiving tray includes a guide member which guides such that a tip end of the medium which is discharged from the discharge roller pair enters the medium mounting surface at a predetermined angle, and the guide member is provided to be elastically displaceable in an advancing and retreating direction with respect to the medium mounting surface of the medium receiving tray and is displaced in a direction coming close to the medium mounting surface according to raising of a pressing load due to the medium that is discharged to the medium receiving tray.

A post-processing apparatus includes a storing unit in which plural recording media are stored for performing post-processing and a transport member that transports a recording medium to the storing unit as a result of rotating while being in contact with a surface of the recording medium. The transport member includes a blade that comes into contact with a recording medium and a reinforcing portion that reinforces a strength of a portion of the blade that does not come into contact with the recording medium.

A post-processing apparatus includes a storing unit in which plural recording media are stored for performing post-processing and a transport member that transports a recording medium to the storing unit as a result of rotating while being in contact with a surface of the recording medium. The transport member includes a blade that comes into contact with a recording medium and a reinforcing portion that reinforces a strength of a portion of the blade that does not come into contact with the recording medium.

A sheet discharging device has a discharge roller pair and a sheet discharge tray arranged selectively either in a first position where the sheet discharge tray is stowed along a side surface of an apparatus main body or in a second position where the sheet discharge tray, swung downward from the first position, protrudes beyond the side surface. The sheet discharge tray has a hook member holding, with one of rotation shafts of the discharge roller pair acting as an engagement shaft, the sheet discharge tray in the first position by engaging with the engagement shaft. As a result of the discharge roller pair being rotated with the sheet discharge tray located in the first position, an engagement releasing member fixed to the engagement shaft releases the engagement of the hook member with the engagement shaft, and the sheet discharge tray moves to the second position.

A medium discharge device includes a discharge roller pair that is provided with a discharge driving roller and a discharge driven roller which drivably rotates in contact with the discharge driving roller, and a medium receiving tray which receives the medium that is fed and discharged by the discharge roller pair, in which the medium receiving tray includes a guide member which guides such that a tip end of the medium which is discharged from the discharge roller pair enters the medium mounting surface at a predetermined angle, and the guide member is provided to be elastically displaceable in an advancing and retreating direction with respect to the medium mounting surface of the medium receiving tray and is displaced in a direction coming close to the medium mounting surface according to raising of a pressing load due to the medium that is discharged to the medium receiving tray.

A medium discharge device includes a discharge roller pair that is provided with a discharge driving roller and a discharge driven roller which drivably rotates in contact with the discharge driving roller, and a medium receiving tray which receives the medium that is fed and discharged by the discharge roller pair, in which the medium receiving tray includes a guide member which guides such that a tip end of the medium which is discharged from the discharge roller pair enters the medium mounting surface at a predetermined angle, and the guide member is provided to be elastically displaceable in an advancing and retreating direction with respect to the medium mounting surface of the medium receiving tray and is displaced in a direction coming close to the medium mounting surface according to raising of a pressing load due to the medium that is discharged to the medium receiving tray.

A sheet discharging apparatus includes a first detecting portion provided in an apparatus body and configured to detect a move of a movable member in a state where a movable tray is at an upper limit position in a moving direction of the movable tray, wherein a detection result of the first detecting portion changes depending on a position of the movable tray in the moving direction. In addition, a second detecting portion detects the position of the movable tray in the moving direction, and a control portion, in a case where the second detecting portion detects that the movable tray is at the upper limit position, determines whether a sheet is present on the movable tray based on the detection result of the first detecting portion. When the second detecting portion does not detect that the movable tray is at the upper limit position, the control portion determines that a sheet is present on the movable tray regardless of the detection result of the first detecting portion.

A stacker of the disclosure is disposed at an ejection opening of a processing apparatus. A support member of the stacker is movable toward an upstream side and a downstream side in an ejecting direction, receives each of the media ejected through the ejection opening, and supports the medium in such an orientation that the medium is inclined with an end edge of the medium on the downstream side in the ejecting direction positioned above an end edge of the medium on the upstream side in the ejecting direction and that the end edge of the medium on the upstream side in the ejecting direction abuts the stacking surface. A receding mechanism of the stacker causes the support member to recede toward the downstream side. A position maintaining mechanism of the stacker maintains a position of the support member having been moved by the receding mechanism.

A sheet feeder includes an apparatus main body, a sheet housing unit, and a sheet feeding unit. The sheet housing unit includes a housing space, a lift plate, an elevating mechanism, and a side fence. The elevating mechanism includes a pair of first wires, a pair of second wires, first pulleys, second pulleys, a reel, and a pair of first connecting members. The reel winds up the pair of first wires and the pair of second wires. The pair of first connecting members are connected to be relatively movable with respect to the lift plate in a vertical direction, causes a relative position to vary with respect to the lift plate in a vertical direction in accordance with a weight of the plurality of sheets loaded on the lift plate, and causes the lift plate to move upward when the weight is lighter than a predetermined value.

According to one embodiment, a sheet post-processing apparatus has a sheet discharge tray, a drive motor, a power transmission breaker, a first power transmitter, a second power transmitter, and a load reducer. The sheet discharge tray stacks sheets. The drive motor raises and lowers the sheet discharge tray. The power transmission breaker can cut off power transmission from the drive motor to the sheet discharge tray when an upward external force is applied to the sheet discharge tray. The load reducer provides a reverse load to the sheet discharge tray in a reverse direction to the load generated on the sheet discharge tray due to stacking of the sheets. The load reducer is connected to the first power transmitter.