Image forming method and apparatus

Details Image forming method and apparatus Image forming method and apparatus

1998-03-13

2000-08-01

Brase, Sandra

Electrophotography

Image formation

Transfer

399303, G03G 1516

Patent

active

060979232

ABSTRACT:
When a grounded conductive roller touches a transfer drum through a transfer material while a voltage is applied to a conductor layer, charges having a polarity opposite to the polarity of the voltage applied to the conductor layer are generated over the transfer material, thereby making it possible to attract the transfer material to the dielectric layer. Since the voltage is applied to the conductor layer, the electrostatic attraction of the transfer material and the toner transfer can be carried out using a single power source. Moreover, since the attraction of the transfer material and the toner transfer are carried out by the charge injection, a lower voltage can be used. Thus, the voltage can be readily controlled while reducing the ozone emission to a relatively low level. Furthermore, since the toner transfer and electrostatic attraction of the transfer material can be carried out using a single power source, the apparatus can be downsized and less expensive. In addition, when a semiconductor layer is made of a solid elastic body, a high-quality transferred toner image can be obtained without image quality deterioration.

REFERENCES:
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patent: 5390012 (1995-02-01), Miyashiro et al.
patent: 5398107 (1995-03-01), Bartholmae et al.
patent: 5438398 (1995-08-01), Tanigawa et al.
patent: 5623329 (1997-04-01), Yamauchi et al.
patent: 5697034 (1997-12-01), Iwakura et al.
patent: 5771430 (1998-06-01), Iwakura et al.

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