Patent ID: 8948641
Filing Date: 2015-02-03
Classification: G03G

Abstract:
1. A fixing device comprising: a rotatable fuser member subjected to heating; a rotatable pressure member opposite the rotatable fuser member, the rotatable pressure member being configured to press against the rotatable fuser member to form a fixing nip there between, a recording medium being conveyed through the fixing nip; a heater adjacent to the rotatable fuser member and configured to heat the rotatable fuser member; a temperature detector directed to at least one of the rotatable fuser member, the rotatable pressure member, and the heater, the temperature detector being configured to detect an operational temperature of the fixing device; and a controller connected to the temperature detector and the heater and configured to control power supply to the heater according to readings of the temperature detector, so as to regulate the detected operational temperature at a setpoint temperature that is variable depending on a print page printed on the recording medium, wherein during sequential processing of multiple print pages, including a current print page and a previous print page immediately preceding the current print page, the controller controls the power supply by adjusting the setpoint temperature for the current print page to,