Abstract: An overcoating for an electrophotographic imaging member includes an amorphous fluoropolymer overcoating layer.

Abstract: A method of controlling variations in electrical characteristics in electrophotographic imaging devices by eliminating the effect of acidic or basic impurities in a photoconductive element. A solution of a weak acid or weak base and a conjugate salt of the weak acid and the weak base is incorporated into a layer of the photoconductive element. In a process for producing the photoconductive element, a substrate is coated with a first dispersion to form a charge generating layer, and then coated with a second dispersion to form a charge transporting layer, wherein there is incorporated in at least one of the first and second dispersions a solution of a weak acid or weak base and the conjugate salt of the weak acid and weak base in an amount effective to reduce variations in the dark development potential (V.sub.DDP) and background potential (V.sub.BG) characteristics of the imaging devices.

Abstract: Photoreceptors, charge generation layers and charge transport layers, in which the charge generation layer or charge transport layer includes a dopant of organic molecules containing basic electron donor or proton acceptor groups, and processes for the formation thereof. Preferred dopants include aliphatic and aromatic amines, more preferably, triethanolamine, n-dodecylamine, n-hexadecylamine, tetramethyl guanidine, 3-aminopropyltriethoxy silane, 3-aminopropyltrihydroxysilane and its oligomers.

Abstract: An exposed layer in an electrophotographic imaging member is provided with increased resistance to stress cracking and reduced coefficient of surface friction, without adverse effects on optical clarity and electrical performance. The layer contains a polydimethylsiloxane copolymer and an inactive film forming resin binder.

Abstract: A layered photoresponsive imaging member comprised of a supporting substrate; a photogenerator layer comprised of a mixture of first and second pigments; and an aryl amine hole transport layer, said mixture comprised of perylenes and phthalocyanines; polycyclic quinones and phthalocyanines; and perinones and phthalocyanines.

Abstract: Toner compositions comprised of resin particles, pigment particles, and as a charge enhancing additive inner salts wherein the negative charge center is covalently attached to the positive charge center. Also disclosed are developer compositions comprised of the aforementioned toner components and carrier particles, which compositions are particularly useful for the development of the electrostatic latent images. Additionally, there can be selected for the toner and developer compositions mixtures of charge enhancing additives including mixtures of the aforementioned inner salts and second charge enhancing additives such as quaternary ammonium compounds.

Abstract: A process for preparing an electrophotographic imaging member comprising providing a photogenerating layer on a supporting substrate and applying a charge transport layer forming mixture to the photogenerating layer, the charge transport layer forming mixture comprising a charge transporting aromatic amine compound of one or more compounds having the general formula: ##STR1## wherein R.sup.1 and R.sup.2 are an aromatic group selected from the group consisting of a substituted or unsubstituted phenyl group, naphthyl group, and polyphenyl group and R.sup.

Abstract: Disclosed for incorporation in imaging members are novel aromatic ether compositions of the formula R--X--R.sub.1, wherein R and R.sub.1 are independently selected from arylamino and substituted arylamino groups, and X is selected from the group consisting of oxygen, sulfur, selenium, and tellurium. Also disclosed are photoresponsive imaging devices containing a photogenerating layer and in contact therewith a hole transport layer comprised of the aromatic ethers illustrated herein.

Abstract: A process for preparing vanadyl phthalocyanine particles for photoresponsive devices.

Abstract: A process for the preparation of pigments of high purity which comprises reacting in the presence of an organic solvent an appropriate impure pigment with an organic acid of the formula R-X, or comprises reacting an appropriate impure pigment with an organic acid of the formula R-X, and subsequently adding an organic solvent to the resulting organic mixture, adding a precipitating agent to the resulting solution mixture, followed by separation of the desired pure pigment from the reaction mixture, wherein R is an alkyl group, containing from about 4 carbon atoms to about 22 carbon atoms, or an aryl group containing from about 6 carbon atoms to about 24 carbon atoms, and X is a group capable of yielding anions.