According to one embodiment of the present disclosure, a post-processing apparatus includes a stapling unit which includes a cartridge for containing a staple used for stapling processing, a moving unit configured to move the stapling unit between a first stapling position, a second stapling position and a replacement position, a detection unit configured to detect presence or absence of a staple in the cartridge, and a control unit configured to make the stapling unit stand ready at the second stapling position in a case where the presence of a staple in the cartridge is detected by the detection unit, and to make the moving unit move the stapling unit to the replacement position in a case where the absence of a staple in the cartridge is detected by the detection unit.

A binding apparatus to bind sheets includes a binding device, a non-volatile memory, and control circuitry. The binding device is configured to bind a plurality of stacked sheets with a binding member. The non-volatile memory is configured to store a quantity of binding members in the binding device. The control circuitry is configured to control operation of the binding device. The control circuitry outputs an alert when the quantity of binding members stored in the non-volatile memory is equal to or less than a first predetermined value and cancels the alert when the quantity of binding members is equal to or less than a second predetermined value.

In a stapling device, a first guide member and a second guide member are disposed one by one on both sides of a binding portion of the recording medium on a side of a recording medium placing of a placement table such that each of the guide members is rotatable, and the first guide member and the second guide member are rotatable between a first posture along a first direction in which one abutting end side extends and a second posture inclined with respect to the first direction in line symmetry with respect to an imaginary line that passes through the binding portion along a second direction orthogonal to the first direction.

A stapler includes a staple striking portion configured to strike a staple to penetrate sheets of paper and a clincher portion configured to bend staple legs of the staple penetrating the sheets of paper. The clincher portion includes a pair of clinchers. The pair of clinchers are configured to perform a first operation and a second operation. In the first operation, the pair of the clinchers move along a surface direction of the sheets of paper to approach each other. In the second operation, the pair of clinchers move to approach the sheets of paper after the first operation.

A post-processing apparatus according to an embodiment includes a processing tray, a post-processing section, a sensor, and a control section. A sheet supplied from an image forming apparatus is led into the processing tray through a lead-in path. The post-processing section applies post-processing to the sheet sent from the processing tray. The sensor detects an object passing a detection space in the lead-in path. The control section controls operation of the post-processing section based on a time in which the sensor detects the object.

A recording material processing apparatus includes a processing tray, a detecting unit, a stapling unit, an instructing unit, a control unit, a switching unit, and a notifying unit. The detecting unit detects recording material placed in the processing tray. The stapling unit executes a stapling process for the recording material placed in the processing tray. The instructing unit outputs a stapling process execution instruction. Upon receipt of the execution instruction in a state in which the detecting unit has detected a recording material inserted in the processing tray from an outside of a main body of a main body apparatus, the control unit cause the stapling process to be executed. The switching unit switches a position of the stapling unit among a plurality of positions. The notifying unit provides notification of a placement position of the recording material in the processing tray corresponding to each of the plurality of positions.

According to one embodiment of the present disclosure, a post-processing apparatus includes a stapling unit which includes a cartridge for containing a staple used for stapling processing, a moving unit configured to move the stapling unit between a first stapling position, a second stapling position and a replacement position, a detection unit configured to detect presence or absence of a staple in the cartridge, and a control unit configured to make the stapling unit stand ready at the second stapling position in a case where the presence of a staple in the cartridge is detected by the detection unit, and to make the moving unit move the stapling unit to the replacement position in a case where the absence of a staple in the cartridge is detected by the detection unit.

An image forming system includes a detection unit to detect a recording material, having an image formed thereon by an image forming unit, placed on a processing tray, a staple unit, a discharge unit, and a discharge tray. A first mode of the system is to discharge the recording material conveyed from the image forming unit to the discharge tray via the processing tray and a second mode involves waiting for instruction for executing. When the detection unit detects the recording material inserted into the processing tray in the second mode, and a recording material first mode conveying instruction is issued in a state of waiting for the executing instruction after the recording material detection, a discharge operation is performed to discharge the recording material inserted into the processing tray to the discharge tray without the staple unit executing staple processing on the recording material inserted into the processing tray.

An image forming system includes: an interface that obtains job information including a plurality of jobs that represent processing contents that are performed on sheets; an image former that forms images on the sheets based on the job information; a plurality of stackers in which the sheets discharged from the image former are stacked so as to be divided for each of the jobs; and a processor that: obtains, from the job information, next processing information of a next processing to be performed on the sheets after the image forming processing, and selects, based on the next processing information, a first stacker among the plurality of stackers for the sheets to be stacked.

A media folding device includes a stacking portion on which media transported from an introduction path are placed; a folding roller pair that folds the media at a folding position after the media have been stacked in the stacking portion; and a bend forming mechanism that includes a first abutting portion configured to abut against a front end of the media, which are stacked in the stacking portion, in a transport direction, and a second abutting portion that is configured to abut against a rear end of the media, which are stacked in the stacking portion, in the transport direction, and that causes the folding position of the media to be nipped by the folding roller pair the folding roller pair by shortening the relative distance between the first abutting portion and the second abutting portion to bend the media toward the folding roller pair.