摘要:
Photoconductive imaging members comprised of an alkoxy-bridged metallophthalocyanine dimer as a charge generator material, wherein said dimer is of the formula C.sub.32 H.sub.16 N.sub.8 MOROMN.sub.8 H.sub.16 C.sub.32 wherein M is a trivalent metal, and R is an alkyl group or an alkyl ether group ##STR1##
摘要:
A process for the preparation of hydroxygallium phthalocyanines which comprises hydrolyzing a gallium phthalocyanine precursor pigment by dissolving said hydroxygallium phthalocyanine in a strong acid and then reprecipitating the resulting dissolved pigment in basic aqueous media; removing any ionic species formed by washing with water, 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 pigment slurry to mixing with the addition of a second solvent to cause the formation of said hydroxygallium phthalocyanine polymorphs.
摘要:
Disclosed is an imaging member comprised of a supporting substrate, a hole transport layer comprised of an arylamine hole transporting substance dispersed in an inactive resinous binder, a photogenerating layer comprised of a photogenerating pigment optionally dispersed in a resinous binder, and as a protective topcoating an electron transporting layer compound of the following formula dispersed in a resinous binder ##STR1## where X is cyano or alkoxycarbonyl groups, A and B are electron withdrawing groups, m is a number of from 0 to 2, n is the number 0 or 1, and W is an electron withdrawing group selected from the groups consisting of acyl, alkoxycarbonyl, alkylaminocarbonyl, and derivatives thereof.
摘要:
A photoconductive imaging member comprised of a photogenerating layer, and a charge transport layer comprised of diaryl biarylylamine copolymers of the formula ##STR1## wherein A and B are independently selected from bifunctional linkages; Z is alkylenedioxy, arylenedioxy, or substituted derivatives thereof; R and R' are alkyl, aryl, substituted alkyl, substituted aryl, alkoxy, or halogen; x and y are mole fractions wherein x and y are greater than 0 and the sum of x and y is equal to 1.0; a and b are the numbers 0, 1 or 2; and n represents the number of monomer segments.
摘要:
Disclosed is an imaging member comprised of a photoconductive layer, and a protective electron transport polymer overcoating of the formula ##STR1## wherein A is a trivalent linkage; B is a functional group such as ester, carbonate, or carbamate; and R is a bivalent linkage.
摘要:
Disclosed is an improved layered photoresponsive imaging member comprised of a photogenerating layer, and in contact therewith an electron transporting layer comprised of compounds selected from the group consisting of anthraquinodimethanes, and anthrone derivatives of the following formulas dispersed in an inactive resinous binder: ##STR1## wherein A and B are independently selected from the group consisiting of CN and COOR, wherein R is an alkyl group; X and Y are independently selected from the group consisting of alkyl, aryl, halide, COOR, CN, hydroxy, and nitro; m is a number of from zero to about 3; and n is a number of from zero to about 3.
摘要:
A process for fabricating an electrophotographic imaging member including providing a supporting substrate, forming a charge generating layer on the substrate, applying a coating composition to the charge generating layer, the coating composition including a film forming charge transporting polymer dissolved in methylene chloride and a solvent selected from the group consisting of 1,2 dichloroethane, 1,1,2 trichloroethane or mixtures thereof, the charge transporting polymer having a backbone comprising active arylamine moieties along which charge is transported, and drying the coating to form a charge transporting layer.
摘要:
A photoconductive imaging member comprised of a supporting substrate, a hole blocking layer thereover, a photogenerating layer and a charge transport layer, and wherein the hole blocking layer is comprised of a metal oxide prepared by a sol-gel process.
摘要:
A process for the preparation of aryl amine polycondensation polymers useful in electrophotographic imaging members, which process comprises the interfacial polymerization of an aryl amine diol dissolved in an alkaline aqueous phase with a bifunctional acid halide dissolved in an organic solvent, resulting in polymers with high molecular weight and narrow molecular weight distribution (M.sub.w /M.sub.n) of from between about 50,000 to about 350,000, and a M.sub.w /M.sub.n of from about 1 to about 4.
摘要:
Bishaloformate derivatives of diols, especially bisphenols, are used in a polycondensation reaction under low temperature interfacial polycondensation conditions to obtain high molecular weight polycarbonates or alternating copolycarbonates which are useful as photoreceptor materials.