Liquid ink development dragout control

Details Liquid ink development dragout control Liquid ink development dragout control

1998-08-27

1999-10-26

Royer, William

Electrophotography

Image formation

Development

399237, 399296, 430117, G03G 1511

Patent

active

059742925

ABSTRACT:
The undesirable image defect of dragout of liquid ink development (LID) toned images generated from the development zone, formed by an imaging member and a metering/development member, can be prevented. Background development of the toned images is suppressed in an image enhancement zone. With the aid of an enhanced electrostatic field, created by an electrode biased at a voltage other than normal development bias in the metering zone, the toned layer can resist higher viscous forces. Image dragout, due to the viscous shear from liquid ink, can therefore be eliminated.

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U.S. Provisional Patent Application 60/063937, filed Oct. 31, 1997, now patent application 09/092,512, filed Jun. 5, 1998, entitled "Liquid Immersion Development Machine Having a Multiple Zone Image Development and Conditioning Apparatus."

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