Samsung Electronics Co., Ltd.

Kristine A Fordahl

Jiayi Zhu

Zbigniew Tokarski

Kam Wah Law

Valentas Gaidelis

Edmundas Montrimas

Jonas Sidaravicius

Ronald J Moudry

David T Ask

This invention relates to a photoreceptor that includes:

Electrophotographic photoreceptors with novel overcoats

A photoreceptor with good mechanical and physical properties is provided with an overcoat layer comprising a copolymer of an &#x3b1;,&#x3b2;-ethylenically unsaturated carboxylic acid and an &#x3b1;,&#x3b2;-ethylenically unsaturated monomer wherein the weight percent of the &#x3b1;,&#x3b2;-ethylenically unsaturated carboxylic-acid is at least 25% up to 99% of the copolymer. The copolymer may comprise an &#x3b1;,&#x3b2;-ethylenically unsaturated carboxylic acid and an &#x3b1;,&#x3b2;-ethylenically unsaturated monomer wherein the copolymer has an acid value of at least 150 mg KOH/g the copolymer. The copolymer may be present in a blend with a second polymer or copolymer comprised of units derived from a second &#x3b1;,&#x3b2;-ethylenically unsaturated monomer that is different from the an &#x3b1;,&#x3b2;-ethylenically unsaturated carboxylic acid and/or the &#x3b1;,&#x3b2;-ethylenically unsaturated monomer. The copolymer or the copolymer blend may be present in a layer that is crosslinked or crosslinkable, the crosslinking being effected through a distinct crosslinking agent that reacts with group(s) on the an &#x3b1;,&#x3b2;-ethylenically unsaturated carboxylic acid or the &#x3b1;,&#x3b2;-ethylenically unsaturated monomer.

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Hopkins, MN, United States of America

Kristine A Fordahl