Fixing apparatus with current control to heater

Details Fixing apparatus with current control to heater Fixing apparatus with current control to heater

2008-01-22

2008-01-22

Gray, David M. (Department: 2852)

Electrophotography

Control of electrophotography process

Control of fixing

C399S070000, C399S328000, C219S486000

Reexamination Certificate

active

11215972

ABSTRACT:
A fixing apparatus has a first heating member and a second heating member provided in a heating portion, and a current control unit which controls an AC current to be supplied to the heating portion, The current control unit executes a wave number control, on the AC current supplied to the heating portion, in a unit of predetermined number of half-waves so that an AC current to the first heating member is supplied in a positive-negative symmetrical pattern in the unit of predetermined number of half-waves; an AC current to the second heating member is supplied in a positive-negative symmetrical pattern in the unit of predetermined number of half waves; AC currents to the first and second heating members are supplied in a positive-negative symmetrical pattern in total in the unit of predetermined number of half-waves and the current control unit increases the duty ratio alternately for the first heating member and the second heating member.

REFERENCES:
patent: 5486903 (1996-01-01), Kanno et al.
patent: 5669039 (1997-09-01), Ohtsuka et al.
patent: 5994671 (1999-11-01), Suzuki et al.
patent: 6385406 (2002-05-01), Funamizu et al.
patent: 6519426 (2003-02-01), Goto et al.
patent: 6701117 (2004-03-01), Kaji
patent: 2006/0051118 (2006-03-01), Kaji et al.
patent: 9-258598 (1997-10-01), None
patent: 2004-138839 (2004-05-01), None
patent: WO 2005064419 (2005-07-01), None

Affiliated with

Also associated with

Rating

Fixing apparatus with current control to heater does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Fixing apparatus with current control to heater, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fixing apparatus with current control to heater will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3933787