Fixing unit for use in image forming device

Details Fixing unit for use in image forming device Fixing unit for use in image forming device

1998-09-22

2000-08-01

Walberg, Teresa

Electric heating

Heating devices

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

339 69, H05B 102

Patent

active

060970065

ABSTRACT:
A fixing unit is used for fixing an toner image on a recording medium onto the recording medium. The fixing unit includes a heater which generates heat when supplied with an electric current. A control circuit selectively output a signal so as to turning ON and OFF a transistor. When the transistor is ON, the electric current is supplied to the heater. The signal output from the control circuit includes a pulse portion having pulses and a continues portion having no pulse. When the pulse portion is output, the electric current to the heater is intermittently disrupted. Because, a rush current generated in the electric current is also intermittently disrupted accordingly, flicker in lightning which is sharing a power source with the fixing unit can be prevented.

REFERENCES:
patent: 5109255 (1992-04-01), Nishikawa et al.
patent: 5386272 (1995-01-01), Nakazato
patent: 5682576 (1997-10-01), Sakai et al.
patent: 5742865 (1998-04-01), Yajima et al.

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