Abstract: The invention is directed to mixtures of PcTiO and a minor amount of another, substituted titanyl phthalocyanine and the synthesis of mixtures of PcTiO and a minor amount of another, substituted titanyl phthalocyanine. The invention is further directed towards milled pigment compositions of such mixtures, and to use of such milled pigment compositions in an electrophotographic element.

Abstract: The present invention is directed to an electrophotographic element that comprises: an electrically conducting layer, a charge generating layer overlying the electrically conducting layer, and a charge transport layer overlying the electrically conducting layer. The charge transport layer, which can be an overcoat overlying the charge generating layer, includes the reaction product in an aqueous medium of a mixture comprising a silsesquioxane polymer and a amine-free surface treated zinc antimonate and an acid scavenger.

Abstract: The present invention is an electrophotographic photoconductor having a photosensitive layer on a conductive substrate. The photosensitive layer contains trimellitimide esters additives.

Abstract: The present invention is an electrophotographic photoconductor having a photosensitive layer on a conductive substrate. The photosensitive layer contains terephthalate esters additives.

Abstract: The invention is directed to mixtures of PcTiO and a minor amount of another, substituted titanyl phthalocyanine and the synthesis of mixtures of PcTiO and a minor amount of another, substituted titanyl phthalocyanine. The invention is further directed towards milled pigment compositions of such mixtures, and to use of such milled pigment compositions in an electrophotographic element.

Abstract: The present invention is an electrophotographic photoconductor having a photosensitive layer on a conductive substrate. The photosensitive layer contains N-arylphthalimides additives.

Abstract: The present invention is directed to an electrophotographic element that comprises: an electrically conducting layer, a charge generating layer overlying the electrically conducting layer, and a charge transport layer overlying the electrically conducting layer. The charge transport layer, which can be an overcoat overlying the charge generating layer, includes the reaction product in an aqueous medium of a mixture comprising a silsesquioxane polymer and a amine-free surface treated zinc antimonate and an acid scavenger.

Abstract: The present invention is an electrophotographic photoconductor having a photosensitive layer on a conductive substrate. The photosensitive layer contains trimellitimide esters additives.

Abstract: The present invention is an electrophotographic photoconductor having a photosensitive layer on a conductive substrate. The photosensitive layer contains N-arylphthalimides additives.

Abstract: The present invention is an electrophotographic photoconductor having a photosensitive layer on a conductive substrate. The photosensitive layer contains terephthalate esters additives.

Abstract: The present invention is a photoconductive element that includes an electrically conductive support, an electrical barrier layer disposed over said electrically conductive support, and disposed over said barrier layer, a charge generation layer capable of generating positive charge carriers when exposed to actinic radiation. The barrier layer includes a vinyl polymer with aromatic tetracarbonylbisimide side groups and crosslinking sites.

Abstract: Electrophotographic charge generating elements comprise a solid electrolyte layer having improved image discrimination. The solid electrolyte layer includes a complex of a silsesquioxane and a charge carrier, and further includes nondiffusible acid scavengers in an amount of at least 0.2 weight %. The acid scavengers are nondiffusible tertiary arylamines having a pKa of at least 4.

Abstract: A cyan pigment, bis(phthalocyanylalumino)tetraphenyldisiloxane is prepared in a single reaction mixture. A phthalonitrile is reacted at high temperature with an aluminum salt in the presence of an ammonia donor such as urea, in an inert, high boiling organic solvent. The resulting reaction product is cooled and without isolation, refluxed in an aqueous solution of a pyridine compound containing dichlorodiphenylsilane. The desired cyan pigment is then isolated.

Abstract: Titanyl fluorophthalocyanines, and electrophotographic elements, and a method for preparing titanyl fluorophthalocyanine having the steps of: dissolving titanyl fluorophthalocyanine in acid to form a solution; admixing the solution and water to precipitate out amorphous titanyl fluorophthalocyanine; washing the amorphous titanyl fluorophthalocyanine until substantially all of the acid is removed; and retaining the amorphous titanyl fluorophthalocyanine under ambient conditions of wetness/dryness and temperature exclusive of conditions combining both dryness and a temperature of greater than about 50.degree. C.

Abstract: This invention provides: A photoconductor element comprising:an electrically conductive layer, a charge generating material and an electron transport agent in a polymeric binder, said electron transport agent comprising at least one cyclic bis-dicarboximide compound of Formula (I): ##STR1## wherein: Q.sup.1 and Q.sup.2, which may be the same or different, represent branched alkyl; unsubstituted straight-chain alkyl; unsubstituted cyclic alkyl; alkyl-substituted cyclic alkyl; unsubstituted, straight-chain, unsaturated alkyl; or H, wherein Q.sup.1 and Q.sup.2 cannot both be H; andR.sup.1, R.sup.2, R.sup.3, and R.sup.4, which may be the same or different, represent hydrogen, alkyl having 1 to 4 carbon atoms, alkoxy having 1 to 4 carbon atoms, or halogen.

Abstract: The present invention is directed to the use of sulfonamido or amido substituted phthalocyanine dyes in optical recording. The dyes are particularly useful in making recordable compact disks. The dyes have acceptable performance yet are easy to make.

Abstract: An electrophotographic coating composition comprising finely-divided photoconductive perylene pigment dispersed in a solvent solution of polymeric binder is prepared by the steps of (1) milling a perylene pigment with milling media comprising inorganic salt and non-conducting particles under shear conditions in the substantial absence of the solvent to provide pigment having a particle size up to 0.2 micrometer, (2) continuing the milling at higher shear at a temperature up to about 50.degree. C., to achieve a perceptible color change of the pigment particles, (3) rapidly reducing the temperature of the milled pigment by at least 10.degree. C., (4) separating the milled pigment from the media and (5) mixing the milled pigment with the solvent solution of polymeric binder to form the coating composition. A very high degree of dispersion of photoconductive perylene pigment in solvent solution of polymeric binder is achieved by this method.

Abstract: A xeroprinting master is formed by depositing a corona charge injection modifying material on a master substrate which includes a charge transport layer. The material can block the injection of charge that would otherwise inject into the charge transport layer or it can inject charge that would otherwise remain on the surface of the master. Preferably, the deposit is made by a conventional printer such as an ink jet, impact or thermal printer and the resulting deposit is not fused before use in xeroprinting.

Abstract: Photoconductive polycarbonate block copolymers are provided containing alternate polycarbonate blocks and photoconductor blocks. The photoconductive blocks are copolymers of polyesters and/or polycarbonates with reactive photonconductors which are preferably difunctional polyols and/or carboxylic acid derivatives. The block copolymers when blended with dyes form photoconductive layers in photoconductor elements which are photosensitive and highly resistant to solvent degradation. Dyes are aggregatable in such a block copolymer matrix.

Abstract: An improved interlayer is provided for use in a photoconductor element between an electrically conductive layer and a charge generation layer of the type where a dye is aggregated in a matrix polymer. The interlayer is a mixture of at least one polyester and at least one polycarbonate. The interlayer provides excellent adhesion between the conductive layer and the charge generation layer and dampens any stress to which the photoconductive element is subjected. Minimal effect on photosensitivity is achieved by optimizing interlayer thickness.