Abstract: A process for changing layered imaging members by the transfer of ions thereto which comprises contacting the imaging member with a liquid developer comprised of a nonpolar liquid, and a mixture of surfactants of an ammonium block copolymer first surfactant of the formula ##STR1## wherein X.sup.- is a conjugate base or anion of a strong acid; R is hydrogen or alkyl; R' is alkyl; R" is an alkyl group containing from about 6 to about 20 carbon atoms; and y and x represent the number average degree of polymerization (DP) wherein the ratio of y to x is in the range of from about 10 to 2 to about 1,000 to 200; and a second surfactant component of the formula ##STR2## wherein R.sub.1 is selected from the group consisting of hydrogen and alkyl, and n is 0 (zero), 1, 2, 3, or 4.

Abstract: A liquid developer comprised of a nonpolar liquid, thermoplastic resin particles, a charge adjuvant, pigment, and a charge director selected from the group consisting of the triblock polymers BAA', BA'A, and ABA' wherein A, A' and B represent polymer segments or blocks, the polar A block repeat units contain an alkylated or protonated ammonium charged site and the polar A' block repeat units contain an acid group of a pKa equal to or less than about 7.0, and wherein the nonpolar B block repeat units contain aliphatic hydrocarbon solubilizing groups; and wherein the A and A' block number average molecular weights range from about 200 to 120,000, and the B block number average molecular weights range from about 2,000 to 190,000; and the total number average molecular weight of said charge director is from about 2,400 to about 300,000, and the ratio of M.sub.w to M.sub.n for said charge director is 1 to 5.

Abstract: A liquid developer comprised of a liquid, thermoplastic resin particles, pigment, and a charge director containing an alcohol.

Abstract: A positively charged liquid developer comprised of thermoplastic resin particles, pigment, a charge director, and an insoluble charge adjuvant comprised of a polymeric quaternary ammonium compound, and wherein the charge adjuvant is associated with or combined with said resin and said pigment.

Abstract: A negatively charged liquid developer comprised of a nonpolar liquid, thermoplastic resin particles, a charge adjuvant, pigment, and an ABA polymer charge director wherein A and B represent the polymer segments.

Abstract: A positively charged liquid developer comprised of liquid, thermoplastic resin particles, optional pigment, a charge director, and an insoluble charge adjuvant comprised of a copolymer of an alkyl acrylamidoglycolate alkyl ether and an alkenylester, and wherein the charge adjuvant is associated with or combined with said resin and said optional pigment, and which charge adjuvant is of the formula ##STR1## wherein R.sup.1 is hydrogen or alkyl of 1 to 20 carbons; R.sup.2 is H, alkyl of 1 to 20, aryl of 6 to 20 carbons, and aryl alkyl of 7 to 35 carbons; m is from 0 to about 10; and wherein the alkyl and aryl groups optionally contain heteroatoms of F, Cl, O, S, N, Si, and P; R.sup.3 and R.sup.4 are alkyl; and x and y represent the number of segments.

Abstract: A liquid developer comprised of a nonpolar liquid, thermoplastic resin particles, polar organic additives with a dielectric constant in the range of about 20 to about 150, and soluble in the nonpolar liquid; and charge director.

Abstract: There is disclosed an electrostatographic imaging member comprising: (a) a supporting substrate including an electrically conductive surface; (b) at least one electrostatographic imaging layer; and (c) an electrically conductive grounding layer adjacent to the at least one imaging layer and in electrical contact with the electrically conductive surface, wherein the grounding layer is comprised of alkyl acrylamidoglycolate alkyl ether polymer.

Abstract: A liquid developer comprised of a liquid, thermoplastic resin particles, a nonpolar liquid soluble charge director comprised of an ionic or zwitterionic quaternary ammonium block copolymer ammonium block copolymer, and wherein the number average molecular weight thereof of said charge director is from about 70,000 to about 200,000.

Abstract: A liquid developer comprised of a liquid, thermoplastic resin particles, optional pigment, a nonpolar liquid soluble charge director comprised of an ionic or zwitterionic quaternary ammonium block copolymer, and wherein said charge director possesses a molecular weight distribution that is bimodal comprising a first AB diblock copolymer component with a number average molecular weight of from about 70,000 to about 200,000, and a second AB diblock copolymer component with a number average molecular weight of from about 2,200 to about 60,000.

Abstract: A negatively charged liquid developer comprised of thermoplastic resin particles, optional pigment, a charge director, and an insoluble charge adjuvant comprised of a copolymer of an alkene and an unsaturated acid derivative, and wherein the acid derivative contains pendant fluoroalkyl or pendant fluoroaryl groups, and wherein the charge adjuvant is associated with or combined with said resin and said optional pigment.

Abstract: A positively charged liquid developer comprised of thermoplastic resin particles, optional pigment, a charge director, and a charge adjuvant comprised of a polymer of an alkene and unsaturated acid derivative; and wherein the acid derivative contains pendant ammonium groups, and wherein the charge adjuvant is associated with or combined with said resin and said optional pigment.An example of a charge adjuvent copolymer compound containing alkylene and an unsaturated acid derivative such as acrylic acid and methacrylic acid containing pendent ammonium groups is represented, for example, by the following general formula ##STR1## wherein Z is oxygen or substituted nitrogen; Y is alkyl; R is hydrogen, alkyl or aryl; and X is an anion.

Abstract: A liquid developer comprised of a liquid, thermoplastic resin particles, a nonpolar liquid soluble charge director comprised of a zwitterionic quaternary ammonium block copolymer wherein both cationic and anionic sites contained therein are covalently bonded within the same polar repeat unit in the quaternary ammonium block copolymer.

Abstract: A liquid developer comprised of a liquid, thermoplastic resin particles, a nonpolar liquid soluble charge director, comprised of a quaternary ammonium block copolymer with hydroxide as the anion.

Abstract: An electrophotographic imaging member containing a supporting substrate having an electrically conductive surface comprising charge injecting material, a charge blocking layer including a water insoluble high molecular weight unmodified hydroxy methacrylate polymer and at least one photoconductive layer, the charge blocking layer having a surface resistivity greater than about 10.sup.10 ohm/sq. This imaging member may be employed in an electrostatographic imaging process.

Abstract: A thick organic ambipolar layer on a photoresponsive device is simultaneously capable of charge generation and charge transport. In particular, the organic photoresponsive layer contains an electron transport material such as a fluorenylidene malonitrile derivative and a hole transport material such as a dihydroxy tetraphenyl benzadine containing polymer. These may be complexed to provide photoresponsivity, and/or a photoresponsive pigment or dye may also be included.

Abstract: An electrophotographic imaging member including a supporting substrate, a charge blocking layer, an imaging layer including at least one photoconductive layer, the blocking layer including an uncrosslinked copolymer derived from vinyl hydroxy ester or vinyl hydroxy amide repeat units chemically modified at a nucleophilic hydroxyl group by a monofunctional electrophile, the copolymer having a number average molecular weight of at least about 10,000.

Abstract: A protective overcoating layer for an electrophotographic imaging device prevents crystallization and leaching of hole transport compounds in a charge transport layer of the imaging device. The overcoat also prevents solvent and ink contact/bending stress charge transport layer cracking. The overcoating layer contains a polyester homopolymer which contains a hole transporting compound and an aliphatic diol in the polymer chain backbone. The homopolymer can be either a meta or para hole transport compound ester linkage polyester homopolymer.

Abstract: A process for preparing a device containing a continuous, semi-transparent conductive layer including providing a substrate, applying to the substrate a coating containing a dispersion of conductive particles having an average particle size less than about 1 micrometer and having an acidic or neutral outer surface in a basic solution containing a film forming polymer dissolved in a solvent, and drying the coating to remove the solvent and form the continuous, semi-transparent conductive layer. The article prepared by this process may be used in an electrophotographic imaging process.

Abstract: A liquid developer comprised of thermoplastic resin particles, and a charge director comprised of an ammonium AB diblock copolymer of the formula ##STR1## wherein X.sup.- is a conjugate base or anion of a strong acid, R is hydrogen or alkyl, R' is alkyl, R" is an alkyl group containing from about 6 to about 20 carbon atoms, and y and x represent the number average degree of polymerization (DP) wherein the ratio of y to x is in the range of from about 10 to 2 to about 100 to 20.