Bookbinding system, image forming apparatus and bookbinding apparatus

摘要

A bookbinding system wherein, when additional printing is conducted on a cover sheet which has been printed thereon outside an image forming apparatus, the image forming apparatus is provided with an ejection-outlet through which the image forming apparatus accepts the cover sheet coming from a bookbinding apparatus and the cover sheet printed by a printing device of the image forming apparatus is fed out to the bookbinding apparatus for bookbinding.