Electrophotography – Control of electrophotography process – Control of fixing
Reexamination Certificate
2006-02-21
2006-02-21
Ngo, Hoang (Department: 2852)
Electrophotography
Control of electrophotography process
Control of fixing
C399S068000, C399S400000
Reexamination Certificate
active
07003239
ABSTRACT:
A temperature control operation for a fixing device is performed based on a vertical synchronous signal Vsync periodically outputted in association with a cycling motion of an intermediate transfer belt. Furthermore, the temperature control operation provides a constant time difference Δt1between a leading edge of the vertical synchronous signal Vsync and a start of energization of a heater. Therefore, a period of the vertical synchronous signal Vsync coincides with a period of the temperature control operation corresponding to each vertical synchronous signal Vsync. In addition, a constant time period is provided between the start of energization and an actual arrival of a recording medium at a nip and hence, the temperature of a heating roller can be maintained at an optimum level during the passage of the recording medium through the nip.
REFERENCES:
patent: 5701554 (1997-12-01), Tanaka et al.
patent: 6453130 (2002-09-01), Richtsmeier
patent: 6633737 (2003-10-01), Tanaka et al.
patent: 1 160 632 (2001-12-01), None
patent: 7-334023 (1995-12-01), None
patent: 3121495 (2000-12-01), None
patent: 2001-290331 (2001-10-01), None
patent: WO 01-35169 (2001-05-01), None
Ngo Hoang
Sughrue & Mion, PLLC
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