A post-processing apparatus includes a paper alignment tray including a loading table on which a paper is to be loaded, and a side guide and an end guide to align a side in a width direction and an end in a longitudinal direction of the paper stack, respectively, a first binder including a binding unit to bind the paper stack on the paper alignment tray in a stapleless manner, the first binder displaceable to a binding location to bind the paper stack and to a separation location to separate the binding unit from the paper stack, and a controller to move the paper stack relative to the binding unit while displacing the first binder from the binding location to the separation location.

A post-processing apparatus includes a paper alignment tray including a loading table on which a paper is to be loaded, and a side guide and an end guide to align a side in a width direction and an end in a longitudinal direction of the paper stack, respectively, a first binder including a binding unit to bind the paper stack on the paper alignment tray in a stapleless manner, the first binder displaceable to a binding location to bind the paper stack and to a separation location to separate the binding unit from the paper stack, and a controller to move the paper stack relative to the binding unit while displacing the first binder from the binding location to the separation location.

A post-processing apparatus includes a paper alignment tray including a loading table on which a paper is to be loaded, and a side guide and an end guide to align a side in a width direction and an end in a longitudinal direction of the paper stack, respectively, a first binder including a binding unit to bind the paper stack on the paper alignment tray in a stapleless manner, the first binder displaceable to a binding location to bind the paper stack and to a separation location to separate the binding unit from the paper stack, and a controller to move the paper stack relative to the binding unit while displacing the first binder from the binding location to the separation location.

A post-processing apparatus includes a paper alignment tray including a loading table on which a paper is to be loaded, and a side guide and an end guide to align a side in a width direction and an end in a longitudinal direction of the paper stack, respectively, a first binder including a binding unit to bind the paper stack on the paper alignment tray in a stapleless manner, the first binder displaceable to a binding location to bind the paper stack and to a separation location to separate the binding unit from the paper stack, and a controller to move the paper stack relative to the binding unit while displacing the first binder from the binding location to the separation location.

A manufacturing method of a staple-less binding unit that includes a first binding unit that has plural recesses and projections and a second binding unit that is arranged to face the first binding unit and has recesses and projections that fit to the recesses and the projections of the first binding unit and in which mediums are bound by being interposed between the first binding unit and the second binding unit in a thickness direction of the mediums includes forming the binding units with a die, adjusting center positions of projecting portions of the binding units formed by the die and removed from the die, and adjusting outer shapes of the projecting portions of which the center positions have been adjusted.

A manufacturing method of a staple-less binding unit that includes a first binding unit that has plural recesses and projections and a second binding unit that is arranged to face the first binding unit and has recesses and projections that fit to the recesses and the projections of the first binding unit and in which mediums are bound by being interposed between the first binding unit and the second binding unit in a thickness direction of the mediums includes forming the binding units with a die, adjusting center positions of projecting portions of the binding units formed by the die and removed from the die, and adjusting outer shapes of the projecting portions of which the center positions have been adjusted.

A recording medium processing apparatus includes first teeth that are used for binding processing of a recording medium bundle; second teeth that move toward the first teeth and press the recording medium bundle located between the first teeth and the second teeth; and a control unit that moves the second teeth toward the first teeth to press the second teeth against the first teeth in a state in which there is no recording medium bundle between the first teeth and the second teeth.

A post-processing device includes a paper alignment tray on which a plurality of papers is aligned and a stapleless binder including a stapleless binding portion to compress and bind the plurality of papers and a nozzle in the stapleless binding portion that supplies water vapor to the plurality of papers.

The present apparatus is provided with a placement tray (processing tray) to place sheets to undergo binding processing, and a bind unit that is able to shift along an end edge of sheets on the placement tray and that binds a plurality of sheets as a single bunch, where in the bind unit, a needle bind unit for performing binding processing on a bunch of sheets with a needle and a needleless bind unit for performing binding processing without a needle are provided together in a shift direction of the bind unit, and a length of the needleless bind unit is configured to be shorter than a length of the needle bind unit in the shift direction of the bind unit. By this means, provided is the apparatus capable of miniaturizing the entire apparatus, with the needle bind unit and needleless bind unit provided together.

The present apparatus includes a placement tray to place sheets to undergo binding processing, and a press bind unit shifting along an end edge of sheets on the placement tray. The press bind unit includes a receiving tooth, and pressing teeth meshing with the receiving tooth to perform press binding on sheets nipped therebetween, and the pressing teeth are provided to shift between a press position for meshing with the receiving tooth, and a retract position spaced apart from the receiving tooth so as to shift the press bind unit along the end edge of sheets with the sheets disposed between the receiving tooth and the pressing teeth. By shifting the pressing teeth to the retract position, it is possible to shift the sheet bind apparatus smoothly along the end edge of a bunch of sheets with the sheets disposed between the receiving tooth and the pressing teeth.