Patent ID: 6587654
Filing Date: 2003-07-01
Classification: G03G

Abstract:
A fixing device which fixes a to-be-fixed agent on an image-forming medium comprising:a heat roller which has a plurality of heaters contained therein and corresponding portions of which are heated by selectively supplying electric power to the heaters, an image area determining section which determines whether a fixing process is necessary or not for each of areas corresponding to the portions of said heat roller which are selectively heated by the heaters based on an image to be fixed on the image-forming medium, and a fixing control section which supplies preset electric power only to the heater corresponding to the area which is determined to require the fixing process by said image area determining section to set the corresponding portion on the heat roller to a fixing temperature and fixes the to-be-fixed agent on the image-forming medium when the portion of the heat roller which corresponds to the heater supplied with the preset electric power has reached a preset fixing temperature.