Electrophotographic apparatus

Details Electrophotographic apparatus Electrophotographic apparatus

1980-01-14

1982-10-26

Truhe, J. B.

Photocopying

Projection printing and copying cameras

Combined with or convertible to a contact printer

355 3CH, 250324, 361235, 307 17, G03G 1500

Patent

active

043558844

ABSTRACT:
One of several corona dischargers used in an electrophotographic apparatus is connected to a power source transformer so as to selectively operate these corona dischargers. The power source transformer is provided with a tertiary winding, to which a switching device is connected. When the switching device is turned on, a secondary output from the transformer becomes lower than a corona discharging limit voltage, whereby the corona discharging stops.

REFERENCES:
patent: 2497604 (1950-02-01), Henry et al.
patent: 3454780 (1969-07-01), Cominassi et al.
patent: 3557368 (1971-01-01), Tano
patent: 4136942 (1979-01-01), Nakahata et al.
patent: 4144463 (1979-03-01), Sugiura
patent: 4239373 (1980-12-01), Weikel, Jr.
patent: 4248524 (1981-02-01), Takahashi
"Xerox Disclosure Journal" vol. 4, No. 5, Sep./Oct. 1979, p. 603, Controlling the Output of Corona Devices-Clark et al.

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