Multicolor image formation device

Details Multicolor image formation device Multicolor image formation device

1999-03-26

1999-12-28

Lee, Susan S.Y.

Electrophotography

Image formation

Development

399178, G03G 1501

Patent

active

060092963

ABSTRACT:
The object of the present invention is to obtain a multicolor image formation device wherein the defect of an image caused in switching developing machines and others can be prevented. A yellow latent image is formed by scanning a light beam on a photoconductor drum and developing is started by a developing machine for yellow. A developed yellow toner image is transferred on an intermediate transfer belt. Even if the transfer of the yellow toner image is finished, the developing machine for yellow is held a state opposite to the photoconductor drum. The developing machine for yellow is switched to a developing machine for magenta immediately before the scanning of a light beam corresponding to next magenta is started. Therefore, the defect of an image due to the effect of oscillation in switching the developing machines can be prevented. As minute toner is supplied to the photoconductor drum, the intermediate transfer belt is never bent and the defect of an image can be prevented from being caused by the effect of oscillation because the bent intermediate transfer belt is restored.

REFERENCES:
patent: 4885611 (1989-12-01), Higashio et al.
patent: 5162853 (1992-11-01), Ito et al.
patent: 5278586 (1994-01-01), Yoneda et al.

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