Heat fixing apparatus with temperature control based on AC power

Details Heat fixing apparatus with temperature control based on AC power Heat fixing apparatus with temperature control based on AC power

1996-12-26

1998-05-05

Walberg, Teresa J.

Electric heating

Heating devices

Combined with diverse-type art device

219492, 219494, H05B 102

Patent

active

057477744

ABSTRACT:
A heat fixing apparatus includes a heater; a temperature sensor for sensing a temperature of the heater; a bias wave number determining limit for determining the number of bias waves corresponding to a predetermined image fixing temperature in accordance with utility voltage source voltage; a bias wave number changing unit for changing a bias wave number in accordance with temperature changing rate of the heater; and a supply wave number control unit for controlling the number of waves supplied to the heater in accordance with an output of the temperature sensor and bias wave number. The unit includes a PID controller.

REFERENCES:
patent: 4180721 (1979-12-01), Watanabe et al.
patent: 4340807 (1982-07-01), Raskin et al.
patent: 4374321 (1983-02-01), Cunningham, Jr. et al.
patent: 4604517 (1986-08-01), Barry
patent: 5343019 (1994-08-01), Nashida et al.
patent: 5367369 (1994-11-01), Nakai et al.

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