Transfer apparatus having a transfer drum

Details Transfer apparatus having a transfer drum Transfer apparatus having a transfer drum

1999-01-07

2000-06-27

Chen, Sophia S.

Electrophotography

Image formation

Transfer

399313, G03G 1516

Patent

active

060816856

ABSTRACT:
The object of the invention is to provide a transfer apparatus including a transfer drum which carries a transfer material by electrostatic attraction with reliability, and can prevent the transfer nonuniformity of the image. The transfer drum is so formed that on the surface of a dielectric layer made of cylinder-shaped aluminium, are formed side by side two semiconductor layers each formed by a foamed elastic member, and on the surface of the semiconductor layers are stacked a conductive layer formed by PVDF. The first semiconductor layer is formed under the transfer region within the surface of the transfer drum, and the diameter of cell is set to be in a range of over 0 .mu.m to 50 .mu.m. Also, the second semiconductor layer is formed under the non-transfer region within the surface of the transfer drum, and the diameter of cell is set to a size of 500 .mu.m or more.

REFERENCES:
patent: 5390012 (1995-02-01), Miyashiro et al.
patent: 5771430 (1998-06-01), Iwakura
patent: 5878314 (1999-03-01), Takaya et al.

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