Image forming apparatus and fixing device

Details Image forming apparatus and fixing device Image forming apparatus and fixing device

2007-06-05

2007-06-05

Ngo, Hoang (Department: 2852)

Electrophotography

Control of electrophotography process

Control of fixing

C399S070000, C219S619000

Reexamination Certificate

active

11210726

ABSTRACT:
The present invention provides a fixing device and a digital photocopier which can shorten the time from an instruction of starting image formation to end of fixing. The fixing device is provided in a cylinder made of metal and having a small thickness, and includes a magnetic excitation coil. When the power source is turned on, all the electric power defined by subtracting an electric power amount consumed by components other than the fixing device is supplied to the magnetic excitation coil to perform heating. As the structural components of the photocopier and auxiliary devices added to the photocopier operate, the electric power defined by subtracting, from the maximum input electric power, the electric power consumed by the structural components of the photocopier and the auxiliary devices is supplied to perform heating. In this manner, the heat roller of the fixing device is heated, in a short time, to a temperature which enables fixing, so that the time required for first copying can be shortened.

REFERENCES:
patent: 5794096 (1998-08-01), Okabayashi
patent: 5899599 (1999-05-01), Kato
patent: 6006051 (1999-12-01), Tomita et al.
patent: 6278852 (2001-08-01), Hayashi
patent: 6496665 (2002-12-01), Umezawa et al.
patent: 6625405 (2003-09-01), Umezawa et al.
patent: 56-144469 (1981-11-01), None
patent: 57-46258 (1982-03-01), None
patent: 58-105180 (1983-06-01), None
patent: 58-114049 (1983-07-01), None
patent: 59-33476 (1984-02-01), None
patent: 63-168989 (1988-07-01), None
patent: 01-310380 (1989-12-01), None
patent: 04-006581 (1992-01-01), None
patent: 4-372977 (1992-12-01), None
patent: 07-319312 (1995-12-01), None
patent: 08-063022 (1996-03-01), None
patent: 09-096990 (1997-04-01), None
patent: 09-152805 (1997-06-01), None
patent: 9-258586 (1997-10-01), None
patent: 10-186935 (1998-07-01), None
patent: 10-254306 (1998-09-01), None
patent: 10-301442 (1998-11-01), None
patent: 10-301442 (1998-11-01), None
patent: 10-302954 (1998-11-01), None
patent: 10-333489 (1998-12-01), None
patent: 11-126678 (1999-05-01), None
patent: 11-143269 (1999-05-01), None
Office Action in U.S. Appl. No. 10/840,329, dated Feb. 22, 2006.

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