Electrophotography – Control of electrophotography process – Control of developing
Patent
1996-10-17
1998-10-13
Ramirez, Nestor R.
Electrophotography
Control of electrophotography process
Control of developing
399 55, G03G 1509
Patent
active
058226508
ABSTRACT:
An image forming apparatus performs a stable developing characteristic for an electrostatic latent image including a halftone image expressed by a binary manner. The apparatus includes a photoreceptor having a surface and an electrostatic image forming device for forming an electrostatic latent image on the surface of the photoreceptor, the electrostatic latent image including a digitally-reproduced binary latent image. The apparatus further includes a developing device for developing the electrostatic latent image. The developing device includes a two-component developer including magnetic carrier particles and toner particles. The apparatus also includes a bias applying device for applying a bias voltage between the developing device and the photoreceptor for defining a relatively high contrast potential of the digitally-reproduced binary latent image to be developed. The developing system includes a control system for controlling a certain amount of toner to be developed to be substantially constant corresponding to the contrast potential. Several configurations of the developing device may be adopted to the purpose.
REFERENCES:
patent: 4999272 (1991-03-01), Tanikawa et al.
patent: 5257075 (1993-10-01), Ohki
patent: 5357317 (1994-10-01), Fukuchi et al.
patent: 5574545 (1996-11-01), Hosoi et al.
patent: 5610696 (1997-03-01), Kemmochi et al.
Kim Suk
Noda Akihiko
Takashima Koichi
Yamaguchi Yoshiro
Yoshino Susumu
Fuji 'Xerox Co., Ltd.
Ramirez Nestor R.
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