Inventors: Ohmichi, Yoshiki;
Assignee: Minolta Co., Ltd. (Osaka, JP)
Primary Examiner: Chen; Sophia S.
Assistant Examiner:
Attorney, Agent or Firm: McDermott, Will & Emery
In an electrophotographic image forming apparatus, curling occurs in the sheet when it passes through the thermal fixing device. The invention equips the apparatus with a decurling path having a decurling mechanism and a path without any such mechanism, as well as an alternating claw that guides the sheet to either of the paths, such that the alternating claw 9 alternates between the paths based on the settings for each sheet supply unit that supplies the sheets. The sheets from a sheet supply unit that requires decurling are guided to the decurling path and decurling is performed. On the other hand, sheets from a manual paper tray in which special types of paper, such as transparencies, are often placed are guided to the path without any decurling mechanism and no decurling is performed. Consequently, a sheet decurling apparatus that appropriately decurls the curling of plain paper only and does not perform decurling on special types of paper, such as thick paper or transparencies, may be realized without an increase in cost. |