Electrophotography – Control of electrophotography process – Control of fixing
Patent
1999-02-04
2000-10-17
Royer, William J.
Electrophotography
Control of electrophotography process
Control of fixing
219216, 399328, 399329, 432 60, G03G 1520
Patent
active
061344001
ABSTRACT:
A toner image fixing apparatus has a fixing roller, a pressing roller normally urged toward the fixing roller for pressing a sheet with an unfixed toner image carried on a surface thereof against the fixing roller to fix the unfixed toner image to the sheet when the sheet passes in one direction through a rolling contact region between the fixing roller and the pressing roller, a heating roller disposed on one side of the fixing roller opposite to the pressing roller, the heating roller having a heating source disposed therein for heating the heating roller, an endless heat transfer belt trained around the heating roller and the fixing roller for transferring heat from the heating source to heat the unfixed toner image on the sheet when the sheet passes through the rolling contact region, and a standby mode temperature control circuit for maintaining temperatures of the fixing roller and the pressing roller in a predetermined temperature range in a standby mode.
REFERENCES:
patent: 3811828 (1974-05-01), Ohta et al.
patent: 4582416 (1986-04-01), Karz et al.
patent: 5053829 (1991-10-01), Field et al.
patent: 5115279 (1992-05-01), Nishikawa et al.
Higashi Yuichiro
Kato Takeshi
Nitto Kogyo Co. Ltd.
Royer William J.
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