Image forming apparatus for high quality color images

Details Image forming apparatus for high quality color images Image forming apparatus for high quality color images

1999-01-28

2000-05-16

Lee, Susan S. Y.

Electrophotography

Image formation

Transfer

399223, 399313, G03G 1501, G03G 1516

Patent

active

06064849&

ABSTRACT:
The image forming apparatus according to the present invention forms a high quality color image with multiple colors of toner in accordance with an input signal. An electrostatic latent image is formed on an image carrier in accordance with the image signal. A developing bias is applied to the image carrier to form a toner image of the latent image for multiple toner colors. To transfer the toner image to an intermediate transfer belt, a rotatable transfer roller is positioned opposite the image carrier and across the transfer belt for attracting the transfer belt toward the image carrier at a transferring position. To reduce the frictional force between the image carrier and the transfer belt, which causes color deviation when multiple toner images are transferred to the intermediate transfer belt, a toner is placed on the image carrier in front of a leading end of a first toner image formed on the image carrier. The toner is applied to the transfer belt when the image carrier is in contact with the transfer belt and thus reduces the frictional force causing color deviation.

REFERENCES:
patent: 5812919 (1998-09-01), Takano et al.

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