Patent ID: 7391983
Filing Date: 2008-06-24
Classification: G03G

Abstract:
1. An image forming apparatus, comprising: an image former that forms and holds an unfixed toner image on a recording medium fed to an image forming area; and a heat-fixing apparatus that heats the recording medium transported from the image forming area in a predetermined fixing area and heats the unfixed toner image onto the recording medium; wherein said heat-fixing apparatus comprising: an image heating body that heats the unfixed toner image on the recording medium; a heat-producer that heats said image heating body; a temperature sensor that detects a temperature of said image heating body; and a calorific value controller that controls a calorific value of said heat-producer based on the temperature detected by said temperature sensor so that the temperature of said image heating body is maintained at an image fixing temperature suitable for heat-fixing the unfixed toner image onto the recording medium; and said image forming apparatus has an image forming operation controller that controls an image forming operation of said image former so that heat-fixing of the unfixed toner image onto the recording medium is started a predetermined timing before the temperature detected by said temperature sensor reaches the image fixing temperature.