Electrophotographic image forming apparatus and its high voltage

Details Electrophotographic image forming apparatus and its high voltage Electrophotographic image forming apparatus and its high voltage

1994-04-22

1995-08-22

Pendegrass, Joan H.

Photocopying

Contact printing

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361235, 323283, G03G 1500, G03G 1502

Patent

active

054445191

ABSTRACT:
An image forming apparatus comprising a body to be charged, and a central processing unit for processing based on oscillation clock pulses from a crystal oscillator, including a timer for generating a pulse signal having a predetermined period based on the oscillation clock pulses. A charging member performs a charging operation on the body to be charged, and first applying means applies a first AC voltage to the charging member, wherein the first applying means generates the first AC voltage based on a pulse signal from the timer in the central processing unit.

REFERENCES:
patent: 4292387 (1981-09-01), Kanbe et al.
patent: 4851960 (1989-07-01), Nakamura et al.
patent: 5111235 (1992-05-01), Ueno et al.
patent: 5198860 (1993-03-01), Yamanaka et al.
patent: 5202725 (1993-04-01), Oku
patent: 5229818 (1993-07-01), Nakahara et al.

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