Image forming apparatus

Details Image forming apparatus Image forming apparatus

2007-01-23

2007-01-23

Gray, David M. (Department: 2852)

Electrophotography

Image formation

Development

C399S299000, C399S223000

Reexamination Certificate

active

11063982

ABSTRACT:
An image forming apparatus includes plural toner image forming devices. Each of which has a rotating photoconductor, a charging device that uniformly charges a surface of the photoconductor, a latent image forming device that forms an electrostatic latent image on the surface of the charged photoconductor, a developing device that develops the electrostatic latent image on the surface of the photoconductor to a toner image, and a developing container that contains toner used by the developing device. A diameter of the photoconductor of at least one toner image forming device is formed larger than a diameter of the photoconductor of the other toner image forming devices. Each developing container of all the toner image forming devices is formed in equal-sized, and a center of rotation of a developing roll of each developing device is arranged in a position upper than a center of rotation of each photoconductor.

REFERENCES:
patent: 5987291 (1999-11-01), Masuda
patent: 6356718 (2002-03-01), Matsumoto
patent: 6537714 (2003-03-01), Kaya et al.
patent: 6938351 (2005-09-01), Kobayashi et al.
patent: 2004/0096245 (2004-05-01), Kai et al.
patent: 2000-242057 (2000-09-01), None
patent: 2001-347384 (2001-12-01), None
JPO Machine Translation of JP 2000-242057 A; Sep. 8, 2000.

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