Electrophotography – Control of electrophotography process – Control of fixing
Reexamination Certificate
2008-06-27
2010-11-23
Gray, David M (Department: 2852)
Electrophotography
Control of electrophotography process
Control of fixing
C399S067000, C399S069000, C219S216000
Reexamination Certificate
active
07840151
ABSTRACT:
A heating device includes a heat applying member heated by a heat source, a pressure applying member pressure contacting the heat applying member with a prescribed pressure, and a temperature detection device that detects temperature of the heat applying member. A timing device is provided to count time elapsing from when the heat source starts heating the heat-applying member. A control device is provided to determine that heat application as a start up operation to the heating member is completed when the temperature detected by the temperature detection device reaches a prescribed threshold and the elapsing time counted by the timing device reaches a prescribed threshold.
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patent: 5319428 (1994-06-01), Maruko et al.
patent: 2006/0165443 (2006-07-01), Yoshinaga et al.
patent: 2006/0177232 (2006-08-01), Ehara et al.
patent: 62-70886 (1987-04-01), None
patent: 3350315 (2002-09-01), None
patent: 2005-345989 (2005-12-01), None
Gray David M
Hyder G. M.
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
Ricoh Co. Ltd.
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