Patent ID: 8150289
Filing Date: 2012-04-03
Classification: G03G

Abstract:
1. An image forming apparatus, comprising: an imaging section to form an image with toner on a recording sheet; and a thermal fixing device to fuse the toner image onto the recording sheet passing through a fixing nip, the fixing device including: wherein the heater only locally heats the fixing member during standby where the fixing member stops rotation, and uniformly heats the rotating fixing member to an operational temperature during recovery where the fixing member resumes rotation in preparation for fixing, wherein the temperature controller initially operates in the on-off mode upon entering recovery, and subsequently switches to the PID mode at a threshold time elapsing after entering recovery, and wherein the temperature controller determines the threshold time at least in part according to one or more of a duration of standby, a thickness of the recording sheet, a temperature of the pressure member, and a print mode of a print job executed by a printing section.