Patent ID: 8057149

Claim:
A bookbinding apparatus which forms a sheet bundle by aligning a plurality of sheets fed from an image forming apparatus and prepares a booklet by applying adhesive on a spine of the sheet bundle, the bookbinding apparatus comprising: a storage member for storing the adhesive; a rotating member for rotating in contact with the adhesive in the storage member; a heater for melting the adhesive in the storage member and for heating the adhesive so as to reach a preset temperature; and a control device for controlling the preset temperature, at a termination of the bookbinding job, to switch from a first preset temperature for a time of bookbinding to a second preset temperature which is below the first preset temperature and equal to or above a melting point of the adhesive; wherein the control device, in a case where the control device judges that any job in the bookbinding mode is preset during a time when the preset temperature is set to the second preset temperature, calculates a time until a start of the preset job in the bookbinding mode, determines a time to change the preset temperature from the second preset temperature to the first preset temperature, and controls the heater to change the preset temperature from the second preset temperature to the first preset temperature based on the calculated time until the state of the preset job in the bookbinding mode.