Patent ID: 8109311

Claim:
A bookbinding apparatus for bookbinding a sheet by applying adhesive comprising: an adhesive tank for storing adhesive; a first heater for heating the adhesive; a second heater for heating the adhesive; a first adhesive temperature sensor for detecting temperature of the adhesive at a first position; a second adhesive temperature sensor for detecting temperature of the adhesive at a second position that differs from the first position; an agitation member for agitating the adhesive in the adhesive tank; and a control device, wherein the control device operates the agitation member during a warm-up process in which the adhesive is heated to an application temperature of the adhesive by the first heater and the second heater after the first heater and the second heater are turned on, then turns off the second heater and continues to have the first heater on after the second heater has been turned off when the second adhesive temperature sensor detects that adhesive temperature has reached a first temperature that is higher than the application temperature, and then completes the warm-up process when the first adhesive temperature sensor detects that adhesive temperature has reached the application temperature.