Patent ID: 8036591

Claim:
A bookbinding apparatus which forms a booklet by coating adhesive onto a spine of a sheet bundle, the bookbinding apparatus comprising: an adhesive tank which stores adhesive; a supplying section which supplies solid adhesive to the adhesive tank; a melting section which melts the solid adhesive supplied to the adhesive tank; a coating section which coats the adhesive onto the spine of the sheet bundle; a measuring section which measures a thickness of the sheet bundle; and a controller which determines that an amount of adhesive that has been coated by the coating section is greater than or equal to a predetermined value when an integrated value of the thickness of the sheet bundle that has been measured by the measuring section is greater than or equal to a predetermined quantity, and which controls the supplying section to supply the solid adhesive from the supplying section to the adhesive tank when the controller determines that the amount of adhesive that has been coated by the coating section is greater than or equal to the predetermined value.