Patent ID: 7700249

Claim:
A photoconductor comprising a supporting substrate, and an active layer in contact with said substrate, and which layer is comprised of at least one photogenerating pigment of a hydroxygallium phthalocyanine, at least one charge transport component, and a mixture of a metal oxide and a chelating agent of an anthraquinone, and wherein said phthalocyanine is prepared by hydrolyzing a gallium phthalocyanine precursor pigment by dissolving said gallium phthalocyanine in a strong acid, and then reprecipitating the resulting dissolved pigment in basic aqueous media; concentrating the resulting aqueous slurry comprised of water and hydroxygallium phthalocyanine to a wet cake; removing water from said slurry by azeotropic distillation with an organic solvent; and subjecting said resulting hydroxygallium phthalocyanine pigment slurry to mixing with the addition of a second solvent, wherein said anthraquinone is a tetrafluorodihydroxyanthraquinone; and wherein the ratio of said hydroxygallium phthalocyanine pigment to said metal oxide to said chelating agent to said charge transport component is from about 2/10/0.1/45 to about 5/40/5/10.