A medium processing apparatus includes a printer, a supporting member having a sheet-like shape and configured to support a discharged medium, and a winding unit configured to wind the supporting member and move with respect to the printer. The winding unit has a first case and a second case that rotatably support a winding shaft, and a placement portion placed at a flat surface. The first case and the second case in a state where axis lines of respective bearing portions that support the winding shaft are aligned with each other and in a state of being held so as to be mutually non-rotatable in a plane orthogonal to an axis line of the winding shaft, and when the winding unit is installed on a flat surface, the placement portion contacts the flat surface.

Provided is a paper sheet processing system capable of collecting a wrong paper sheet put in a bill processing apparatus to examine the collected paper sheet without making the supplier feel doubt. A paper sheet processing apparatus verifies a paper sheet using image data acquired by a bill reader when the bill is being conveyed. If the paper sheet is determined to be counterfeit in the verification, the paper sheet processing apparatus holds the paper sheet within the paper sheet processing apparatus and sends a signal from a controller of the paper sheet processing apparatus to instruct a report device to report a result different from the result of the verification. The report device reports a result irrelevant to use of a wrong paper sheet.

Provided is a paper sheet processing system capable of collecting a wrong paper sheet put in a bill processing apparatus to examine the collected paper sheet without making the supplier feel doubt. A paper sheet processing apparatus verifies a paper sheet using image data acquired by a bill reader when the bill is being conveyed. If the paper sheet is determined to be counterfeit in the verification, the paper sheet processing apparatus holds the paper sheet within the paper sheet processing apparatus and sends a signal from a controller of the paper sheet processing apparatus to instruct a report device to report a result different from the result of the verification. The report device reports a result irrelevant to use of a wrong paper sheet.

A stacked-sheet detection device includes a main shaft portion, a first detection arm portion, a parallel shaft portion, a second detection arm portion, an interlocking arm portion, a detected portion, and a detection sensor. The second detection arm portion is provided outside a first passing range, rotates in a predefined rotation direction and causes the interlocking arm portion to rotate in the predefined rotation direction by contacting a sheet that passes through a second passing range. When at least one of the first detection arm portion and the interlocking arm portion rotates in the predefined rotation direction, the main shaft portion rotates in the predefined rotation direction, and the detected portion rotates in the predefined rotation direction.

A dual-stage rapid sheet stacking system is provided. In one embodiment, the dual-stage rapid stacker comprises a landing platform and a first actuator configured to control a vertical position of the landing platform. A vertical position sensor is configured to monitor the vertical position of the landing platform. A CPU is configured to receive a signal from the vertical position sensor and, in response to the received signal, to send a corresponding command to the first actuator such that the first actuator maintains a minimum sheet drop distance. A sliding catch tray unit, is mounted on a plurality of suspension rails. The dual-stage rapid sheet stacking system comprises a second actuator configured to receive commands from the CPU to control a horizontal position of the sliding catch tray unit. The dual-stage rapid sheet stacking system is configured to stack a plurality of sheets on the landing platform and then discharge, a plurality of sheets through the sliding catch tray unit.

A dual-stage rapid sheet stacking system is provided. In one embodiment, the dual-stage rapid stacker comprises a landing platform and a first actuator configured to control a vertical position of the landing platform. A vertical position sensor is configured to monitor the vertical position of the landing platform. A CPU is configured to receive a signal from the vertical position sensor and, in response to the received signal, to send a corresponding command to the first actuator such that the first actuator maintains a minimum sheet drop distance. A sliding catch tray unit, is mounted on a plurality of suspension rails. The dual-stage rapid sheet stacking system comprises a second actuator configured to receive commands from the CPU to control a horizontal position of the sliding catch tray unit. The dual-stage rapid sheet stacking system is configured to stack a plurality of sheets on the landing platform and then discharge, a plurality of sheets through the sliding catch tray unit.

Provided is a discharged sheet accommodating device including a support shaft that has an axial center and is mounted on an apparatus body of an image forming apparatus that is provided with an outlet port from which a recording material is discharged, a first support portion that is provided to be fixed to a lower end of the support shaft, a second support portion into which the support shaft is movably inserted, a holding member of which one end is supported by the first support portion and the second support portion, and which is movable in an up and down direction and in a horizontal direction, and a receiving member of which one end is fixed to the support shaft and the other end is held by a leading end portion of the holding member to foe extensible and contractable, and which receives the recording material.

A sheet conveying apparatus includes a discharge tray having a support surface supporting a sheet discharged by a discharge unit of a conveyor. A first stopper is provided on the support surface. A movable member is provided on the support surface between the discharge unit and the first stopper. The first stopper is changeable between a first position at which the first stopper protrudes from the support surface and a second position at which the first stopper is stored in the discharge tray. The movable member is changeable between a third position at which the movable member protrudes from the support surface and a fourth position located nearer to the support surface than the third position. The first stopper is changed from the first position to the second position in conjunction with a change of the movable member from the third position to the fourth position.

Provided are an accommodating device that performs appropriate processing in order to discard an empty paper pack remaining in the accommodating device and an image forming apparatus including the accommodating device. The accommodating device includes an accommodating unit, a processing unit, and a discarding unit. The accommodating unit accommodates a paper pack including a bundle of stacked sheets of printer paper wrapped with wrapping paper in such a manner that the printer paper is freely taken out. The processing unit flatly crushes and conveys an empty paper pack from which all of the sheets of the printer paper have been taken out and in which only the wrapping paper has remained. The discarding unit stores a flatly crashed empty paper pack conveyed from the processing unit in order to discard them.

Provided are an accommodating device that performs appropriate processing in order to discard an empty paper pack remaining in the accommodating device and an image forming apparatus including the accommodating device. The accommodating device includes an accommodating unit, a processing unit, and a discarding unit. The accommodating unit accommodates a paper pack including a bundle of stacked sheets of printer paper wrapped with wrapping paper in such a manner that the printer paper is freely taken out. The processing unit flatly crushes and conveys an empty paper pack from which all of the sheets of the printer paper have been taken out and in which only the wrapping paper has remained. The discarding unit stores a flatly crashed empty paper pack conveyed from the processing unit in order to discard them.