Image transfer device for an image forming apparatus

Details Image transfer device for an image forming apparatus Image transfer device for an image forming apparatus

1995-01-17

1996-02-27

Beatty, Robert

Photocopying

Contact printing

Light boxes

355274, 355275, G03G 2100

Patent

active

054953170

ABSTRACT:
An image transfer device for a copier, printer, facsimile apparatus or similar image forming apparatus. A transfer belt is rotated and applied with a charge from a first electrode in contact with the transfer belt to transfer a toner image from an image carrier to a transfer medium carried on the transfer belt or to the transfer belt itself. A second electrode contacts the transfer belt. A variable resistance element is connected between the second electrode and ground. A controller produces a ratio of a current applied from the first electrode to the transfer belt and a current from the transfer belt to the second electrode and controls a resistance of the variable resistance element such that the ratio has a predetermined value. Additionally, the resistance of the transfer belt to the variable resistance element is one of 1:1-100, 10:1-100 and 100:1-100.

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patent: 5268717 (1993-12-01), Imaizumi
patent: 5291253 (1994-03-01), Kumasaka et al.

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