Patent ID: 7584949

Claim:
A bookbinding system comprising: an image forming apparatus having: a first cover sheet storing section; and a first image recording device configured to record an image on a cover sheet supplied from the first cover sheet storing section; a bookbinding apparatus having: a second cover sheet storing section; a second image recording device configured to record an image on a cover sheet supplied from the second cover sheet storing section; a trimming device configured to trim an end of a cover sheet supplied from either of the first cover sheet storing section or the second cover sheet storing section; and a binding device configured to bind a trimmed cover sheet around a bundle of sheets; and a control device configured to control one or more of recording an image on a cover sheet, trimming an end of a cover sheet, and binding a cover sheet around a bundle of sheets, based on a determined thickness of the bundle of sheets; wherein the bookbinding system is configured to supply a cover sheet from the second cover sheet storing section to the trimming device without passing the cover sheet through the first image recording device.