Low noise charging system

Details Low noise charging system Low noise charging system

1996-09-30

1998-07-14

Royer, William J.

Electrophotography

Internal machine environment

250324, 250326, 361225, 399170, 399172, 399311, G03G 1502

Patent

active

057818290

ABSTRACT:
A method and apparatus for achieving optimum noise control of multiple coronode wires in a copier/printer involves optimizing phase relationships of the voltage on the wires in such a way so as to steer the maximum part of the noise distribution profile in the direction best suited for absorption or dissipation. In a two corotron charging system, the coronodes are preferably charged to where the phase angle, charge frequency and spacing between wires are optimized. If desired, a sound absorption material could be added to the charging system.

REFERENCES:
patent: 3811048 (1974-05-01), Matsumoto et al.
patent: 4908006 (1990-03-01), Burysek et al.
patent: 4908007 (1990-03-01), Henderson
patent: 5466938 (1995-11-01), Nakayama et al.
patent: 5539501 (1996-07-01), Yu et al.

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