Image forming apparatus and method for removing fringe patterns

Details Image forming apparatus and method for removing fringe patterns Image forming apparatus and method for removing fringe patterns

1998-07-06

2000-08-08

Braun, Fred L.

Electrophotography

Control of electrophotography process

Control of charging

399176, G03G 1502

Patent

active

061013439

ABSTRACT:
An image forming apparatus includes a voltage generating section for generating one of an AC voltage and a voltage obtained by superposing an AC voltage on a DC voltage; an image carrier; and a contact charger for receiving the voltage generated by the voltage generating section and giving a surface potential corresponding to the received voltage to the image carrier by contact. Further, it includes a latent image forming section for forming a latent image by scanning the image carrier with a predetermined scanning period, and a control section for controlling the voltage generating section and the latent image forming section. The control section controls the voltage generating section and the latent image forming section so that a period of an AC component of the voltage generated by the voltage generating section is N times or 1/N times as long as the scanning period, where N is a natural number.

REFERENCES:
patent: 4727453 (1988-02-01), Ewing
patent: 4851960 (1989-07-01), Nakamura et al.
patent: 5576808 (1996-11-01), Ikegawa et al.

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