A sheet binding processing apparatus includes a binding device which performs a binding process on a sheet bundle stacked on a stacking unit and a sheet bundle set at a manual setting portion, the stacking unit stacking introduced sheets, a sheet bundle being set to the manual setting portion from an outside; a moving portion which moves the binding device to a first binding position for performing the binding process on a sheet bundle stacked on the stacking unit and a second binding position for performing the binding process on a sheet bundle set at the manual setting portion; and a controller which causes the binding device, in a case that the binding process is not performed on a sheet bundle stacked on the stacking unit, to wait due to the moving portion at a position different from the first binding position.

A sheet binding processing apparatus includes a binding device which performs a binding process on a sheet bundle stacked on a stacking unit and a sheet bundle set at a manual setting portion, the stacking unit stacking introduced sheets, a sheet bundle being set to the manual setting portion from an outside; a moving portion which moves the binding device to a first binding position for performing the binding process on a sheet bundle stacked on the stacking unit and a second binding position for performing the binding process on a sheet bundle set at the manual setting portion; and a controller which causes the binding device, in a case that the binding process is not performed on a sheet bundle stacked on the stacking unit, to wait due to the moving portion at a position different from the first binding position.

According to one embodiment, there is provided an information generating device which generates information to be used in an image forming apparatus that performs continuous printing by binding a plurality of sheets on which an image is formed among the plurality of sheets using a sheet binding mechanism, and includes a blank determination unit. The blank determination unit determines blanks of the sheets in a case of forming the image that shows characters on the plurality of sheets based on the number of the characters formed on the sheets, the types of the characters, the sizes of the characters, and a sheet binding position.

The present invention is to provide a sheet bundle binding device capable of easily removing some sheets from a sheet bundle that has been subjected to staple-free binding. A corner Sc of a first sheet bundle which is accumulated on a processing tray is subjected to proper binding using a staple needle by a staple binding unit. Then, a corner of a second sheet bundle obtained by accumulating additional sheets on the first sheet bundle is pressed and deformed between crimping toothed parts of a staple-free binding unit to temporarily bind the second sheet bundle. Thus, the additional sheets can easily be removed from the second sheet bundle.

The present invention is to provide a sheet bundle binding device capable of easily removing some sheets from a sheet bundle that has been subjected to staple-free binding. A corner Sc of a first sheet bundle which is accumulated on a processing tray is subjected to proper binding using a staple needle by a staple binding unit. Then, a corner of a second sheet bundle obtained by accumulating additional sheets on the first sheet bundle is pressed and deformed between crimping toothed parts of a staple-free binding unit to temporarily bind the second sheet bundle. Thus, the additional sheets can easily be removed from the second sheet bundle.

When performing an alignment process on a sheet loaded on the processing tray in a state where a front end of the sheet is protruded from a discharge outlet above a discharge tray, the control unit performs a front end alignment process in which a pair of discharge tray cursors sandwich the front end of the sheet protruded above the discharge tray in the width direction, and a rear end alignment process in which the pair of processing tray cursors sandwich a rear end of the sheet on the processing tray in the width direction.

When performing an alignment process on a sheet loaded on the processing tray in a state where a front end of the sheet is protruded from a discharge outlet above a discharge tray, the control unit performs a front end alignment process in which a pair of discharge tray cursors sandwich the front end of the sheet protruded above the discharge tray in the width direction, and a rear end alignment process in which the pair of processing tray cursors sandwich a rear end of the sheet on the processing tray in the width direction.

A sheet post-processing device includes a conveying member, a processing tray, a processing section, a reference plate, an alignment member, and a frame. The processing tray stacks sheets carried in by the conveying member. The alignment member moves the sheet carried in onto the processing tray in an alignment direction so as to aid alignment of the sheets. The alignment member includes a roller holder, an alignment roller, and a guide member. The guide member has a sheet guide part protruding from a swinging end of the roller holder to the downstream side in the alignment direction than the alignment roller. When the number of the sheets placed on the processing tray varies, an angle of the guide member with respect to the roller holder varies so that a distance between a top sheet placed on the processing tray and the sheet guide part becomes substantially constant.

A sheet post-processing device includes a conveying member, a processing tray, a processing section, a reference plate, an alignment member, and a frame. The processing tray stacks sheets carried in by the conveying member. The alignment member moves the sheet carried in onto the processing tray in an alignment direction so as to aid alignment of the sheets. The alignment member includes a roller holder, an alignment roller, and a guide member. The guide member has a sheet guide part protruding from a swinging end of the roller holder to the downstream side in the alignment direction than the alignment roller. When the number of the sheets placed on the processing tray varies, an angle of the guide member with respect to the roller holder varies so that a distance between a top sheet placed on the processing tray and the sheet guide part becomes substantially constant.

Provided is a sheet post-processing apparatus in which a control portion repetitively performs a width-direction alignment operation including a first alignment operation of moving width regulating members from standby positions to first regulating positions before a sheet that is carried in onto a processing tray is aligned in a carry-in direction by abutting of an edge of the sheet against a reference plate, and a second alignment operation of moving the width regulating members from the standby positions to second regulating positions after the sheet has been aligned in the carry-in direction by the reference plate. The sheet post-processing apparatus satisfies C1>C2>P1?C3 where P1 is a size in a width direction of the sheet, and C1, C2, and C3 are intervals between the width regulating members at the standby positions, the first regulating positions, and the second regulating positions, respectively.