Patent ID: 7690651
Filing Date: 2010-04-06
Classification: G03G

Abstract:
1. An image forming apparatus comprising: an image carrier; a transfer unit configured to transfer, to a sheet, an image formed on the image carrier; a fixing unit configured to fix the image transferred on the sheet by the transfer unit; a loop sensor configured to detect a loop of the sheet conveyed by the transfer unit and the fixing unit; a control unit configured to control, in accordance with an output from the loop sensor, a sheet conveyance speed in the fixing unit so as to form the loop of the sheet conveyed by the transfer unit and the fixing unit; and a moving member configured to push the sheet remaining between the transfer unit and the fixing unit toward the loop sensor to assist the detection of the sheet using the loop sensor, wherein the moving member is configured to operate while the transfer unit and the fixing unit are stopped, and wherein when the loop sensor detects the sheet by operating the moving member, the control unit determines that a remaining sheet is present, and outputs a warning signal.