Image forming apparatus having a voltage controlled contact char

Details Image forming apparatus having a voltage controlled contact char Image forming apparatus having a voltage controlled contact char

1993-12-23

1996-03-12

Ramirez, Nestor R.

Photocopying

Contact printing

Light boxes

355219, G03G 1502

Patent

active

054990807

ABSTRACT:
A charging apparatus includes a charging member for charging the member to be charged; a power source for supplying electric power to the charging member; a power source for supplying a constant small DC current to the charging member; and a device for determining a voltage to be applied to the charging member; wherein while the constant small DC current is supplied to the charging member, a voltage supplied to the charging member is detected and in response to the detected voltage, the voltage determining device determines the voltage to be applied to the charging member.

REFERENCES:
patent: 5151736 (1992-09-01), Ohzeki et al.
patent: 5196885 (1993-03-01), Takeuchi et al.
patent: 5229818 (1993-07-01), Nakahara et al.
patent: 5305177 (1994-04-01), Aoki et al.

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