Lexmark International, Inc.

Curt J Claflin

Ronald Lloyd Roe

Donald Wayne Stafford

Alan Stirling Campbell

George P Marshall

Eric L Ziercher

Randy L Fagerquist

John Y Kim

Tracy G Floyd

Brenda M Kelly

Rubber charge roller cores are coated with styrene acrylic powder. Excess powder is removed, and the rollers are used in normal operation without the usual permanent outer layer. The more complex and costly outer layer of nylon is eliminated. Dust resulting from normal operation replaces the original powder coating.

Powder coated charge roller

An electrophotographic device (1) in which a photoconductor drum (3) is charged by a charging roller (5). Insulating liquid (19, 30) is applied at their initial nip. The charging roller both charges and squeegees largely dry the photoconductor member. The liquid (19) may be produced by incomplete cleaning by a cleaning blade (21). Excess liquid is collected at the sides. This results in reduction in foreign gasses, and reduction in the operating potential between photoconductor drum and charging roller.

Liquid toner imaging with contact charging

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Lexington, KY, United States of America

Curt J Claflin