Patent ID: 9475663
Filing Date: 2016-10-25
CPC Classification: B65H,G03G,G06K

Claim Text:
1. An image forming apparatus comprising: a stacking portion on which a sheet is to be stacked; an image forming unit configured to form an image on a sheet fed from the stacking portion; a size detection unit configured to detect a size of a sheet stacked on the stacking portion; a determining unit configured to determine, regardless of a designated sheet size used in an image formation job, an effective size group usable for image forming from among a plurality of size groups, each of which has a different size series of a sheet; a notification unit configured to provide notification of information; and a control unit configured to adopt the sheet size detected by the size detection unit as a size for a sheet in a case where the detected size is included in the effective size group determined by the determining unit, and cause the notification unit to provide a warning in a case where the size of the sheet detected by the size detection unit is not included in the effective size group determined by the determining unit.