Patent ID: 9354579
Filing Date: 2016-05-31
CPC Classification: B65H,G03G

Claim Text:
1. An image forming apparatus comprising: a first supply unit configured to supply at least one tabbed sheet one by one from each of a plurality of tabbed sheet bundles each comprised of tabbed sheets that are different in tab position from one another; a second supply unit configured to supply recording sheets; a conveyance unit configured to convey the at least one tabbed sheet supplied by said first supply unit and the recording sheets supplied by said second supply unit and to discharge them to outside; an image forming unit configured to form images on both surfaces of each of the recording sheets conveyed by said conveyance unit; and a control unit configured to, in a case where at least one surplus tabbed sheet not inserted into corresponding each of a plurality of output sheet bundles remains in each of the plurality of tabbed sheet bundles when outputting the plurality of output sheet bundles each having the at least one tabbed sheet inserted into a recording sheet bundle comprised of recording sheets each formed with images on both sides by a double-sided image forming operation of said image forming unit: