Electrophotographic photoreceptors

摘要

A photoreceptor with good mechanical and physical properties is provided with an overcoat layer comprising a copolymer of an alpha , beta -ethylenically unsaturated carboxylic acid and an alpha , beta -ethylenically unsaturated monomer wherein the weight percent of the alpha , beta -ethylenically unsaturated carboxylic acid is at least 10% by weight of the copolymer. The copolymer may comprise an alpha , beta -ethylenically unsaturated carboxylic acid and an alpha , beta -ethylenically unsaturated monomer wherein the copolymer has an acid value of at least 60 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 alpha , beta -ethylenically unsaturated monomer that is different from the an alpha , beta -ethylenically unsaturated carboxylic acid and/or the alpha , beta -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 groups) on the an alpha , beta -ethylenically unsaturated carboxylic acid or the alpha , beta -ethylenically unsaturated monomer.