Patent ID: 8295750
Filing Date: 2012-10-23
Classification: G03G

Abstract:
1. A fixing apparatus comprising: a pair of fixing sections pressed against each other and including a fixing roller having a first heat-generating portion incorporated therein, and a pressure roller; an endless belt for heating a surface of the fixing roller by bringing a heating nip portion into contact with the fixing roller; a plurality of support rollers supporting the endless belt therearound so as to give tension, and each having a second heat-generating portion incorporated therein; and a control unit which controls amounts of heat generated by the first and second heat-generating portions, wherein the endless belt has a thickness of 0.08 mm or more and 0.14 mm or less, and the heating nip portion is formed in an angular range of 50° or more and 90° or less around a center axis of the fixing roller, and wherein, in a warming-up operation, the control unit controls the amounts of heat generated by the first and second heat-generating portions such that, before a surface temperature of the endless belt reaches a first preset temperature, a surface temperature of the fixing roller reaches a second preset temperature.