Patent ID: 7076197
Filing Date: 2006-07-11
Classification: G03G

Abstract:
1. A fixing device for fixing a recording sheet carrying a toner image, comprising: 1) a heating roller which rotates and comes into contact with a surface carrying the toner image, of the recording sheet, including, 2) a pressure roller which comes into contact with the heating roller to nip the recording sheet carrying the toner image, including, 3) an exterior heating roller which comes into contact with the heating roller to heat the heating roller, including at least one of, wherein Asker-C hardness of the heating roller is less than Asker-C hardness of the pressure roller, and wherein the heat conductivity of the elastic layer of the heating roller is equal to or less than 0.2 W/m K, and the heat conductivity of the elastic layer of the pressure roller is equal to or greater than 0.4 W/m K.