Patent ID: 8090279
Filing Date: 2012-01-03
Classification: G03G

Abstract:
1. An image forming apparatus comprising: an image supporting member; a developer supporting member for attaching developer to the image supporting member to form a developer image; a transfer unit for transferring the developer image to a recording medium; a fixing unit for fixing the developer image to the recording medium at a fixing temperature; an external temperature detection unit for detecting an environmental temperature outside the image forming apparatus; a sheet number storage unit for storing a number of the recording media; an ID motor powered time measuring unit for measuring a period of powered time of an ID motor; a fixing motor powered time measuring unit for measuring a period of powered time of a fixing motor; and a control unit for changing a target temperature according to the environmental temperature and the number of the recording media so that the fixing temperature of the fixing unit becomes the target temperature, said control unit setting the fixing temperature according to the environmental temperature, the period of powered time of the ID motor, and the period of powered time of the fixing motor.