Polyurethane roller with high surface resistance
AssigneeLexmark International, Inc.
InventorsTodd Lucas Janes, Johnny Dale Massie, II, Jean Marie Massie, Ronald Lloyd Roe, Donald Wayne Stafford
Life of this patent
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Abstract
An electrophotographic developer roller is made by casting urethane prepolymer mixed with a butadiene, a trifunctional curative and ferric chloride powder. After curing, the roller is baked, which oxidizes the outer surface. The oxidized surface layer is electrically resistive, which is desirable in a developer roller. An excellent developer roller is achieved at low production cost.
Claims8
An endless developer member comprising a body of polycaprolactone ester toluene-diisocyanate polyurethane, a conductive filler, and polydiene, of a lower alkane said member having an outer surface of oxidized polydiene of a lower alkane.
Dependencies are inferred from the claim text.