Single-ended symmetric resistive ring design for sed rolls

Details Single-ended symmetric resistive ring design for sed rolls Single-ended symmetric resistive ring design for sed rolls

1997-05-12

1998-11-10

Smith, Matthew S.

Electrophotography

Image formation

Development

399279, 399291, G03G 1508

Patent

active

058358293

ABSTRACT:
A donor roll for transporting marking particles to an electrostatic latent image recorded on a surface is provided. The donor roll is adaptable for use with an electric field to assist in transporting the marking particles from the donor roll to a development zone adjacent the surface. The donor roll includes a rotatably mounted body and a first electrode member mounted on the body. The donor roll further includes a second electrode member mounted on the body and spaced from the first electrode member and a resistive member electrically interconnecting the first electrode member and the second electrode member so that when an activation potential for creating an electric field is applied to the first electrode member a portion of the potential will be transferred to the second electrode member creating an attenuated field.

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patent: 5729807 (1998-03-01), Parker

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