Image forming apparatus with variable fixing heat

Details Image forming apparatus with variable fixing heat Image forming apparatus with variable fixing heat

2006-06-20

2006-06-20

Grimley, Arthur T. (Department: 2852)

Electrophotography

Control of electrophotography process

Control of fixing

C399S067000, C399S068000

Reexamination Certificate

active

07065309

ABSTRACT:
An image forming apparatus has a fixing unit that applies heat energy to non-fused developer on a medium. The medium is advanced in a transport path and a heater supplies heat energy to the fixing unit when the medium passes the fixing unit. When a trailing end of the medium is a predetermined distance upstream of the fixing unit, a controller operates in a first mode in which the controller causes the heater to supply a first amount of heat energy to the fixing unit. When the trailing end of the medium is within a predetermined distance upstream of the fixing unit, the controller operates in a second mode in which the controller causes the heater to supply a second amount of heat energy to the fixing unit. The second amount of heat energy is smaller than the first amount of heat energy.

REFERENCES:
patent: 5682576 (1997-10-01), Sakai et al.
patent: 5966562 (1999-10-01), Maehara
patent: 6108500 (2000-08-01), Ohkama et al.
patent: 2004/0047641 (2004-03-01), Kato et al.
patent: 07-325504 (1995-12-01), None
patent: 10-020703 (1998-01-01), None

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