Heater control device for image forming apparatus

Details Heater control device for image forming apparatus Heater control device for image forming apparatus

1992-06-23

1996-01-02

Paschall, Mark H.

Electric heating

Heating devices

With power supply and voltage or current regulation or...

219492, 219216, 219508, 323235, 323901, H05B 102

Patent

active

054810892

ABSTRACT:
Disclosed is a heater control device which controls a heater used in an image forming apparatus such as a laser printer, a copying machine, or a facsimile machine. The heater control device includes a switch for connecting and disconnecting an application of an alternating current voltage to the heater used in the image forming apparatus, and a switch control unit for varying a period of time for the application of the alternating current voltage to the heater per unit period of time by controlling the switch in accordance with a value of the alternating current voltage applied to the heater. The heater control device can be used regardless of the differing voltage levels of available commercial power provided in various geographic regions of the world respect to voltage.

REFERENCES:
patent: 4188528 (1980-02-01), Wierzchowski et al.
patent: 4506144 (1985-03-01), Hesford et al.
patent: 4603245 (1986-07-01), Yagasaki
patent: 4740671 (1988-04-01), Kuroda et al.
patent: 4935606 (1990-06-01), Geary

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