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.

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.

Provided is a book block aligning device that forms one processing line with paper processing devices on an upstream side and a downstream side, and is capable of stably performing alignment processing of a book block at a high speed. Provided is the book block aligning device comprising an air blowing control mechanism that controls start/stop of blowing of air from an air outlet, and an air volume of air, in accordance with timing when a book block passes through the air outlet opened in a conveying surface provided in a conveying path, and a vibration mechanism that vibrates a first conveying surface.

Provided is a book block aligning device that forms one processing line with paper processing devices on an upstream side and a downstream side, and is capable of stably performing alignment processing of a book block at a high speed. Provided is the book block aligning device comprising an air blowing control mechanism that controls start/stop of blowing of air from an air outlet, and an air volume of air, in accordance with timing when a book block passes through the air outlet opened in a conveying surface provided in a conveying path, and a vibration mechanism that vibrates a first conveying surface.

A sheet binding apparatus according to an embodiment includes a tape holding section and a guide section. The tape holding section holds a tape in at least two parts. The guide section guides a sheet bundle to between the two parts of the tape. The tape holding section bends and holds the tape to be convex to a conveying direction downstream side of the sheet bundle.

A booklet includes a cover including an integrally formed front cover sheet and a rear cover sheet connected by a hinge fold around which the front cover sheet is pivoted relative to the rear cover between a closed position and an open position, and at least first and second leaves therein. Each leaf includes at least one integrally formed leaf sheet and spine sheet connected together at a hinge fold. Upon pivoting the front cover sheet between a closed position and an open position, the interior leaves move relative to the front cover sheet and a step display tab area on each interior leaf is progressively revealed. A method of forming the booklet is also disclosed.

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.

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.

Provided is a book block aligning device that forms one processing line with paper processing devices on an upstream side and a downstream side, and is capable of stably performing alignment processing of a book block at a high speed. Provided is the book block aligning device comprising an air blowing control mechanism that controls start/stop of blowing of air from an air outlet, and an air volume of air, in accordance with timing when a book block passes through the air outlet opened in a conveying surface provided in a conveying path, and a vibration mechanism that vibrates a first conveying surface.

Provided is a book block aligning device that forms one processing line with paper processing devices on an upstream side and a downstream side, and is capable of stably performing alignment processing of a book block at a high speed. Provided is the book block aligning device comprising an air blowing control mechanism that controls start/stop of blowing of air from an air outlet, and an air volume of air, in accordance with timing when a book block passes through the air outlet opened in a conveying surface provided in a conveying path, and a vibration mechanism that vibrates a first conveying surface.