Fuser unit and imaging forming apparatus having the same

Details Fuser unit and imaging forming apparatus having the same Fuser unit and imaging forming apparatus having the same

2007-06-14

2009-11-03

Husar, Stephen F (Department: 2875)

Electrophotography

Control of electrophotography process

Control of fixing

C399S043000, C399S330000, C399S335000

Reexamination Certificate

active

07613411

ABSTRACT:
A fuser unit including: a set of a heat roller and a pressure roller for sandwiching and conveying a printing sheet while heating the printing sheet by the heat roller; a peripheral surface contact member which is in contact with the peripheral surface of the heat roller; an external heater for heating the peripheral surface contact member by applying electric energy; a contact member temperature sensor for detecting a temperature of the peripheral surface contact member; and a temperature controller for controlling an upper limit temperature of the peripheral surface contact member in accordance with the number of printing sheets conveyed per unit time.

REFERENCES:
patent: 5918087 (1999-06-01), Kimura et al.
patent: 6411785 (2002-06-01), Ogawahara et al.
patent: 2002-182503 (2002-06-01), None
patent: 2003-233274 (2003-08-01), None
patent: 2004-085601 (2004-03-01), None
patent: 2004-198659 (2004-07-01), None

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