A sheet processing apparatus includes a processing tray to place the sheet, a load tray provided on a downstream side of the processing tray in a transport direction, neat alignment plates provided outside a main body housing to shift in a width direction orthogonal to the transport direction and to align opposite sides of the sheet, a sheet support surface provided in a different position adjacent to the processing tray to support a sheet inserted from a manual feed opening, a binding processing apparatus to perform binding processing on sheets placed on the sheet support surface, a regulation surface to regulate a side edge of the sheet located at a side of the load tray, and a width-direction drive mechanism to shift the neat alignment plates between an alignment position aligning a sheet on the load tray in the width direction and a retract position different from the alignment position.

Disclosed is a method for binding a bundle of leaves, of which a strip of each of the leaves is folded separately beforehand along a first line to form a first fold line that extends parallel to and at a first distance from the edge, and subsequently is folded again along a second line to form a second fold line that extends parallel to and at a second distance from the edge whereby the first distance is different from the second distance.

Disclosed is a method for binding a bundle of leaves, of which a strip of each of the leaves is folded separately beforehand along a first line to form a first fold line that extends parallel to and at a first distance from the edge, and subsequently is folded again along a second line to form a second fold line that extends parallel to and at a second distance from the edge whereby the first distance is different from the second distance.

A book block supplying machine includes a reader which reads job information from an information portion printed on a book block; and a timing adjusting portion which adjusts a supply timing at which the book block is fed toward the book binding machine. A controller includes: a job information acquisition portion which acquires the job information; an upper limit processing speed acquisition portion which acquires an upper limit processing speed; a making speed decision portion which adopts and decides the making speed; a making speed instruction portion which instructs the book binding machine to make the bound material at the making speed; a timing decision portion which decides the supply timing based on the making speed, upper limit processing speed and accumulating number; and a timing instruction portion which instructs the timing adjusting portion to supply the book block at the supply timing.

A folding machine folding a sheet P1 into a predetermined folding pattern to form a signature P3, a saddle stitching machine 3 arranged downstream of the folding machine to staple and fold the signature and a control unit 15 controlling the folding machine and saddle stitching machine are provided. The folding machine has parameters adjustable depending on a thickness of the sheet. The saddle stitching machine has parameters adjustable depending on a thickness of the signature P3, P4. The control unit sets the parameters of the folding machine based on the information about the thickness of the sheet and sets the parameters of the saddle stitching machine based on the information about the thickness of the signature calculated using the information about the thickness of the sheet and the information about the folding pattern of the folding machine.

A folding machine folding a sheet P1 into a predetermined folding pattern to form a signature P3, a saddle stitching machine 3 arranged downstream of the folding machine to staple and fold the signature and a control unit 15 controlling the folding machine and saddle stitching machine are provided. The folding machine has parameters adjustable depending on a thickness of the sheet. The saddle stitching machine has parameters adjustable depending on a thickness of the signature P3, P4. The control unit sets the parameters of the folding machine based on the information about the thickness of the sheet and sets the parameters of the saddle stitching machine based on the information about the thickness of the signature calculated using the information about the thickness of the sheet and the information about the folding pattern of the folding machine.

A paper sheet S is intermittently transported by a transport mechanism 6 and each processing unit 7, 8 operates while the transport mechanism pauses the transport operation. An information acquisition unit 9 obtains paper information from the paper sheet. A control unit 10 stores the paper information of the paper sheet to be processed for each processing unit, updates the data of the memory in a manner such that the paper information of the paper sheet associated with the previous processing unit is associated with the next processing unit every time the transport mechanism transports, and configures the settings of each processing unit for the next processing operation based on the paper information every time the processing operation of the processing unit is completed.

A paper sheet S is intermittently transported by a transport mechanism 6 and each processing unit 7, 8 operates while the transport mechanism pauses the transport operation. An information acquisition unit 9 obtains paper information from the paper sheet. A control unit 10 stores the paper information of the paper sheet to be processed for each processing unit, updates the data of the memory in a manner such that the paper information of the paper sheet associated with the previous processing unit is associated with the next processing unit every time the transport mechanism transports, and configures the settings of each processing unit for the next processing operation based on the paper information every time the processing operation of the processing unit is completed.

Provided is an image forming apparatus configured to form an image on a sheet. A case binding apparatus is configured to cut predetermined sides of a sheet bundle formed by binding a plurality of sheets to perform bookbinding. The case binding apparatus includes a cutting-waste box configured to collect cutting waste produced by the cutting and a cutting-waste full load detection sensor configured to detect a fully loaded state of the cutting-waste box with the cutting waste collected in the cutting-waste box. When the sheet onto which the image is to be formed is not a last sheet in the sheet bundle, the image forming apparatus does not interrupt image formation processing in response to the fully loaded state of the waste box detected by the detector when an order of the sheet in the sheet bundle is smaller than a predetermined order.

Provided is an image forming apparatus configured to form an image on a sheet. A case binding apparatus is configured to cut predetermined sides of a sheet bundle formed by binding a plurality of sheets to perform bookbinding. The case binding apparatus includes a cutting-waste box configured to collect cutting waste produced by the cutting and a cutting-waste full load detection sensor configured to detect a fully loaded state of the cutting-waste box with the cutting waste collected in the cutting-waste box. When the sheet onto which the image is to be formed is not a last sheet in the sheet bundle, the image forming apparatus does not interrupt image formation processing in response to the fully loaded state of the waste box detected by the detector when an order of the sheet in the sheet bundle is smaller than a predetermined order.