Tandem color image forming apparatus with an image transfer...

Details Tandem color image forming apparatus with an image transfer... Tandem color image forming apparatus with an image transfer...

2007-02-06

2007-02-06

Beatty, Robert (Department: 2852)

Electrophotography

Image formation

Transfer

Reexamination Certificate

active

10660699

ABSTRACT:
An image forming apparatus of the present invention disclosed is of the type sequentially transferring toner images from a plurality of photoconductive drums to a sheet being conveyed by an image transfer belt or an intermediate image transfer belt one above the other with bias applying members to thereby form a composite color image. Backup rollers, contacting the inside surface of the belt, each have volumetric resistivity of 109Ω·cm or above and ten-point mean surface roughness Rz of 6 μm or above.

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