Patent ID: 7845627

Claim:
A bookbinding apparatus comprising: a gathering tray device that collates sheets sequentially fed thereto into a sheet bundle; a sheet bundle conveying device that grips the sheet bundle collated by the gathering tray device and conveys the sheet bundle to an adhesive coating position located downstream of the gathering tray device; an adhesive coating device that coats the sheet bundle located at the adhesive coating position with an adhesive; and a control device that controls a bookbinding process executed by the sheet bundle conveying device and the adhesive coating device, wherein, (i) upon receiving a bookbinding process stopping signal in a state where one sheet is placed on the gathering tray device, the control device does not allow the adhesive coating device to perform an adhesive coating process for the one sheet, and (ii) upon receiving the bookbinding process stopping signal in a state where two or more sheets are placed on the gathering tray device, the control device controls the sheet bundle conveying device to convey the two or more sheets to the adhesive coating position and controls the adhesive coating device to coat the sheet bundle in process with the adhesive.