Patent ID: 7813664
Filing Date: 2010-10-12
Classification: G03G

Abstract:
1. A power control method to control a heating roller, in which a roller power being supplied to a heating resistor included in the heating roller is controlled in an image forming apparatus using the heating roller to fix a toner image, the power control method comprising: supplying a source power supplied from an external source to the heating resistor as the roller power while gradually increasing a maximum level of the source power up to a specific maximum supply level; measuring a surface temperature of the heating roller, and supplying the source power having a maximum level at the maximum supply level to the heating resistor as the roller power until the measured surface temperature reaches a specific fixing target temperature; supplying the source power having an upper limit of the maximum level at a specific fixing property improving level to the heating resistor as the roller power until a printing medium is first fed; and fixing a toner image of print data onto the fed printing medium by using the heating roller.