Patent ID: 7346289
Filing Date: 2008-03-18
Classification: G03G

Abstract:
1. An image forming apparatus comprising: an image carrier that is rotationally driven; a heating device that heats said image carrier; a first temperature detection device that is disposed out of contact with a surface of said image carrier to detect temperature of said image carrier; a second temperature detection device that is disposed out of contact with the surface of said image carrier to detect the temperature of said image carrier; and a control device that controls said heating device based on a first surface temperature detection signal for said image carrier indicating a detection result of said first temperature detection device and a second surface temperature detection signal for said image carrier indicating a detection result of said second temperature detection device, wherein said control device controls said heating device based on said first surface temperature detection signal in a case where said first surface temperature detection signal is output earlier in time than said second surface temperature detection signal, and informs of a state of said first temperature detection device in a case where said second surface temperature detection signal is output earlier in time than said first surface temperature detection signal.