| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a metallic sleeve for heating satisfying fixing performance, quick-start performance, contamination prevention at the time of endurance and prevention of increase in torque and to cope with high speed on-demand fixation for achieving the above performances. <P>SOLUTION: In a heat fixing device 6 which comprises a flexible sleeve 13 having a metallic substrate, a fixedly-arranged heater 11 which is contacted with the inner surface of the substrate of the sleeve and a pressure roller 20 for forming a fixing nip part N with the heater through the sleeve and transports a recording material P at the fixing nip part by rotating the inner surface of substrate of the sleeve while rubbing against the heater to heat fix a toner image formed on a recording material on the recording material, the surface roughnesses of the inner surface and the outer surface of the substrate are Rz, which is 3 μm or less. <P>COPYRIGHT: (C)2012,JPO&INPIT |
