Patent ID: 7079782
Filing Date: 2006-07-18
Classification: G03G

Abstract:
1. A fixing apparatus comprising: a heating roller a surface of which is formed of a conductive material; a heating unit that is configured to heat the heating roller; a temperature detecting mechanism having one or more non-contact temperature detecting units that are arranged in non-contact with the surface of the heating roller and that are configured to detect the surface temperature of the heating roller by sensing infrared rays emitted from the heating roller; and a correction circuit that is configured to correct information as to the surface temperature of the heating roller output from the non-contact temperature detecting unit(s) based on a predetermined correction coefficient, wherein the correction circuit is configured: (a) to execute temperature correction of the heating roller during a warming-up time; and (b) not to execute temperature correction when it is reported to require cleaning or exchange of a non-heating roller or the non-contact temperature detecting unit(s).