A sheet post processing device includes a loading tray on which a sheet conveyed thereto is loaded, a side end edge binding stapler fixed at a position opposed to a side end edge, along a conveyance direction, of a sheet bundle of a plurality of sheets loaded on the loading tray, the side end edge binding stapler performing a first binding process on the side end edge, a conveyance unit that moves the sheet bundle on the loading tray in the conveyance direction, and a controller that controls the conveyance unit The controller can cause the conveyance unit to move the sheet bundle in the conveyance direction so as to perform the first binding process on the sheet bundle with the side end edge binding stapler at a plurality of positions along the side end edge

A sheet post-processing device includes: an alignment member which aligns a sheet bundle on a stacking tray; and a stapler which performs binding processing on a rear end of the sheet bundle. The stapler includes: a first stapler which moves along the rear end of a first sheet bundle and performs the binding processing on a plurality of positions at the rear end of the first sheet bundle; and a second stapler which performs, at one part of an end portion of the rear end on one side, binding processing different from the first stapler. The alignment member includes: a first alignment member and a second alignment member which align the sheet bundle in a first stacking position; and a third alignment member which is fixed to a position corresponding to the second stapler and which aligns the sheet bundle in a second stacking position with the first alignment member.

A binding apparatus includes a pair of pressing members to sandwich and press a sheet bundle to bind the sheet bundle, a rotator to rotate to periodically separate and contact the pressing members with each other, a detector to detect whether the rotator is between a first position at which the pressing members are separated from each other and a second position downstream from the first position in a forward rotation direction of the rotator, and control circuitry. The second position is upstream in the forward rotation direction from a peak position at which a pressing force between the pressing members is maximum. The control circuitry is configured to rotate the rotator in a reverse direction to the forward rotation direction to move the rotator to the first position when the detector detects that the rotator is between the first position and the second position in the forward rotation direction.

A sheet processing device includes a stapling unit that cuts off excess parts of a staple at a normal processing position, a container that stores the excess parts, the container having an upper end portion with an opening and being disposed below the stapling unit, a pair of electrodes disposed at a portion of a side wall of the upper end portion, the portion corresponding to the normal processing position, the pair of electrodes being exposed to inside the container, and a control unit for detecting that the excess parts in the container have reached the upper end portion when the pair of electrodes is short-circuited.

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.

An image forming apparatus includes: a needleless binding device configured to form a recessed or raised impression as a needleless binding part by performing needleless binding on a bundle of sheets; an environment sensor; and a controller configured to perform, based on a value detected by the environment sensor, control to display a confirmation image requesting a user to make confirmation on the needleless binding prior to execution of the needleless binding.

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 sheet processing apparatus includes a tray, a first binder, a second binder, a feeder, and circuitry. The tray receives and stores a sheet bundle. The first binder presses the sheet bundle to bind the sheet bundle. The second binder penetrates the sheet bundle with a needle to bind the sheet bundle. The feeder feeds the sheet bundle in a first direction, and moves the sheet bundle in a second direction. The circuitry causes the feeder to move the sheet bundle on the tray in the second direction, moves the first binder from a binding position to a home position different from the binding position, and moves the second binder to the binding position in the width direction to bind the sheet bundle by the second binder after the sheet bundle is moved in the second direction and the first binder is moved to the home position.

An image forming apparatus includes: a needleless binding device configured to form a recessed or raised impression as a needleless binding part by performing needleless binding on a bundle of sheets; an environment sensor; and a controller configured to perform, based on a value detected by the environment sensor, control to display a confirmation image requesting a user to make confirmation on the needleless binding prior to execution of the needleless binding.