Fixing apparatus with controlled heating members for heating...

Details Fixing apparatus with controlled heating members for heating... Fixing apparatus with controlled heating members for heating...

2006-09-12

2006-09-12

Gray, David M. (Department: 2852)

Electrophotography

Image formation

Fixing

C399S330000, C399S335000, C399S067000, C399S069000

Reexamination Certificate

active

07107001

ABSTRACT:
The present invention provides an external heating member abutment controller which can instantaneously adjust the quantity of heat provided by external heating members to the surface of a fixing member, to provide a fixing apparatus which can drastically increase productivity for cardboards and which can provide high-quality color images free from variations in gloss (gloss nonuniformity). Thus, a fixing apparatus according to the present invention comprises a first and second fixing rotating members that use nip portions to thermally fix a toner image on a recording material and a first and second heating members that abut against the first fixing rotating member to heat an outer surface of the first fixing rotating member. The fixing apparatus is characterized in that when a fixing operation is started, the first heating member and the second heating member are sequentially abutted against the first fixing rotating member.

REFERENCES:
patent: RE35923 (1998-10-01), Mitsuya
patent: 6473579 (2002-10-01), Suzuki et al.
patent: 6799000 (2004-09-01), Aslam et al.
patent: 2005/0207771 (2005-09-01), Kameda
patent: 2005/0214043 (2005-09-01), Kameda
patent: 10-149044 (1998-06-01), None
patent: 2004-37555 (2004-02-01), None
Machine translation of Japanese Patent JP 10-149044 (Mitsuhiro et al.).

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