Patent ID: 7699572

Claim:
A bookbinding apparatus comprising: a coating device for coating an adhesive on a spine of a bundle of sheets while the coating device moves forwardly and backwardly relative to the bundle of sheets in a longitudinal direction of the bundle of sheets, the coating device comprising: a coating roller for coating the adhesive on the spine of the bundle of sheets; and at least two control members disposed on opposite sides of the coating roller in the longitudinal direction of the bundle of sheets; a driving device for conducting the movements of the coating device relative to the bundle of sheets; and a control device for controlling the driving device; wherein one of the at least two control members controls a thickness of the coated adhesive on the spine of the bundle of sheets by coming in contact with the coated adhesive during a forward movement of the coating device and another one of the at least two control members controls the thickness of the coated adhesive on the spine of the bundle of sheets by coming in contact with the coated adhesive during a backward movement of the coating device, and wherein the control device controls a coating amount on the bundle of sheets by changing a number of times of coating of the coating device.