Heating device and fixing device

Details Heating device and fixing device Heating device and fixing device

2005-08-30

2005-08-30

Van, Quang T. (Department: 3742)

Electric heating

Inductive heating

With power supply system

C219S619000, C219S661000, C399S088000, C399S090000

Reexamination Certificate

active

06936800

ABSTRACT:
A CPU detects a temperature of a central part of a heating roller. If the detected temperature does not exceed 180° C., the CPU drives a central coil or a side-end coil for 0.4 second in accordance with a temperature difference between the central part of the heating roller and a side-end part of the heating roller. Then, the CPU drives the side-end coil or central coil for 0.2 second. Thereafter, the CPU detects the temperature of the central part and repeats the driving control until the detected temperature reaches 180° C.

REFERENCES:
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patent: 6087641 (2000-07-01), Kinouchi et al.
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patent: 2002/0007752 (2002-01-01), Sakagami
patent: 2-270293 (1990-11-01), None
patent: 2000-206813 (2000-07-01), None
patent: 2001-312178 (2001-11-01), None
U.S. Appl. No. 10/387,413, filed Mar. 14, 2003, Kinouchi et al.

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