Image forming apparatus for forming an image on an image receivi

Details Image forming apparatus for forming an image on an image receivi Image forming apparatus for forming an image on an image receivi

1995-09-11

1997-05-06

Pendegrass, Joan H.

Electrophotography

Image formation

Development

430 42, 430 45, G03G 1501

Patent

active

056276290

ABSTRACT:
An image forming apparatus includes at least two developing units containing two types of developing agents of different colors. This image forming apparatus is improved in the following points. i) The triboelectric charging amounts of the toner of the developing agents are reduced in the order of transfer. ii) The volume resistivities of the developing agents are reduced in the order of transfer. iii) The charging potentials of image carriers when electrostatic latent images corresponding to individual developing agents are formed are reduced in the order of transfer.

REFERENCES:
patent: 4093457 (1978-06-01), Hauser et al.
patent: 4927724 (1990-05-01), Yamamoto et al.
patent: 5363178 (1994-11-01), Matsumoto
patent: 5469248 (1995-11-01), Fujiwara et al.

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