Electrophotography – Control of electrophotography process – Control of fixing
Reexamination Certificate
2007-11-13
2007-11-13
Gray, David M. (Department: 2852)
Electrophotography
Control of electrophotography process
Control of fixing
C399S069000
Reexamination Certificate
active
10809407
ABSTRACT:
A heating apparatus includes a heat unit that generates heat in response to energization; and an energization unit that supplies AC power to the heat unit and energizes the heat unit discontinuously in a pulsatile manner at least when energization of the heat unit is started. The energization unit turns on and off a control signal twice or more and sets an on and off period defined by sum of an on time and an off time of the control signal to a period not matching an integral multiple of a half the period of the AC power. The energization unit is configured to energize the heat unit when a control signal is on and when a voltage value of an AC power crosses zero and to stop energizing the heat unit when the control signal is off and when the voltage value of the AC power crosses zero.
REFERENCES:
patent: 5669038 (1997-09-01), Kishimoto
patent: 6018140 (2000-01-01), Hirose et al.
patent: 6097006 (2000-08-01), Inukai
patent: 6111230 (2000-08-01), Cao et al.
patent: 6157010 (2000-12-01), Mine
patent: 6160975 (2000-12-01), Bartley et al.
patent: 6259073 (2001-07-01), Inukai
patent: 2003/0072581 (2003-04-01), Nishida
patent: 1 016 941 (2000-07-01), None
patent: 1 209 541 (2002-05-01), None
patent: U-61-149293 (1986-09-01), None
patent: A-1-158514 (1989-06-01), None
patent: A-6-314130 (1994-11-01), None
patent: A 11-41797 (1999-02-01), None
patent: A-11-52782 (1999-02-01), None
patent: A 11-95606 (1999-04-01), None
patent: A 11-167329 (1999-06-01), None
patent: A-2001-242740 (2001-09-01), None
patent: A 2002-6655 (2002-01-01), None
patent: A-2002-15835 (2002-01-01), None
patent: A-2002-84736 (2002-03-01), None
Brother Kogyo Kabushiki Kaisha
Gray David M.
Roth Laura K
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