Abstract: A polyester comprising at least 12 mole percent polymerized recurring units containing an arylamine photoconductive component and at least 15 mole percent polymerized recurring units containing a photopolymerizable component and wherein each of said components is responsive to a different wavelength of light. The polyesters are useful in radiation-sensitive elements, particularly lithographic elements.

Abstract: Phosphorous diketonate electron accepting compounds are disclosed for use as sensitizers in electron donating photoconductive compositions. Methine dyes having a phosphorous diketonate component and a method of making same are also disclosed.

Abstract: Novel Z-3-trihalochalcogenpropenone compounds selected from the group consisting of Z-3-trihaloseleniumpropenone and Z-3-trihalotelluriumpropenone and methods of making such compounds are disclosed. The Z-3-trihalochalcogenpropenone compounds are useful as sensitizers in electrophotographic compositions and elements.

Abstract: Novel 4H-thiopyran-1,1-dioxides are disclosed. They are useful as electron transporters in electrophotographic layers and elements.

Abstract: Phosphorous diketonate electron accepting compounds are disclosed for use as sensitizers in electron donating photoconductive compositions. Methine dyes having a phosphorous diketonate component and a method of making same are also disclosed.

Abstract: Compositions comprising a polymer and dendrite crystals of a salt consisting of the cation of 2-(4,5-dihydronaphtho[1,2-d]-1,3-dithiole-2-ylidene)-4,5-dihydronaphtho [1,2-d]-1,3-dithiole and an anion are useful in forming conductive coatings.

Abstract: Polymeric photoconductors are disclosed comprising a condensation polymer backbone containing, as repeating units, the condensation residues of (1) a diacid, and (2) an organic difunctional compound capable of undergoing condensation polymerization with said diacid, and an arylamine photoconductor group appended to at least one of said diacid or said organic difunctional compound residues.A preferred polymeric photoconductor is ionic and comprises a condensation copolymer containing, in addition to the above described repeating units, the condensation residue of a second diacid containing an anionic iminodisulfonyl or sulfo group. In certain embodiments, the ionic arylamine-containing polymers are water-dispersible copolyesters.The polymeric photoconductors described are useful in photoconductive compositions and elements. Electrophotographic processes employing such elements are also disclosed.

Abstract: Novel chalcogenopentalene compounds having a tellurium atom in the 6a position, and methods of making chalcogenopentalenes having a tellurium or a selenium atom in the 6a position are disclosed. The chalcogenopentalene compounds are useful as sensitizers in electrophotographic compositions and elements containing an electron donor and as charge emitters in multilayer photoconductive elements.

Abstract: Compositions comprising a polymer and dendrite crystals of a salt consisting of the cation of 2-(4,5-dihydronaphtho[1,2-d]-1,3-dithiole-2-ylidene)-4,5-dihydronaphtho [1,2-d]-1,3-dithiole and an anion are useful in forming conductive coatings.

Abstract: The present invention discloses novel substituted benzotelluropyrones and a novel method for making such compositions. The compositions are useful as intermediates for making benzotelluropyrylium and benzotelluropyrylium diketonate electron dye sensitizers for electron donating photoconductive compositions and elements.

Abstract: The present invention discloses novel mononuclear telluropyrone compositions of matter and a method for making such compositions. The compositions are useful intermediates for making telluropyrylium electron accepting dye sensitizers for photoconductive compositions.

Abstract: Photoconductive compositions having both high-speed and high-resolution are disclosed. The composition comprises a film forming electrically insulating polymer and a dye in the form of a dye-dye complex, having a structure according to the formula ##STR1## wherein X.crclbar. represents an anion; the dye has an absorption spectrum which changes when a binderless coating of the dye is treated with solvent vapors, and the composition containing the dye-dye complex has an absorption spectrum which is similar to the changed absorption spectrum of the dye when treated with solvent vapors.

Abstract: Polymeric photoconductors are disclosed comprising a condensation polymer backbone containing, as repeating units, the condensation residues of (1) a diacid, and (2) an organic difunctional compound capable of undergoing condensation polymerization with said diacid, and an arylamine photoconductor group appended to at least one of said diacid or said organic difunctional compound residues.A preferred polymeric photoconductor is ionic and comprises a condensation copolymer containing, in addition to the above described repeating units, the condensation residue of a second diacid containing an anionic iminodisulfonyl or sulfo group. In certain embodiments, the ionic arylamine-containing polymers are water-dispersible copolyesters.The polymeric photoconductors described are useful in photoconductive compositions and elements. Electrophotographic processes employing such elements are also disclosed.

Abstract: Photoconductive compositions having improved quantum efficiency are disclosed. The compositions comprise:(a) an electron donating photoconductor; and sensitizing amounts of(b) a first electron acceptor selected from cyanine and styryl methine dyes having a 1,3,2-dioxaborin nucleus and(c) a second electron acceptor selected from methine-free compounds having a nucleus selected from the group consisting of 1,3,2-dioxaborin; 1,3,2-oxazoborin and 1,3,2-diazoborins.

Abstract: Novel benzotelluropyrylium diketonate dyes are disclosed. The dyes are useful in improving the performance of electron donating photoconductive compositions and elements. Methods for making the dye sensitizers are also disclosed.

Abstract: Novel telluropyrylium dyes are disclosed. The dyes are useful as electron accepting sensitizers for electron donating photoconductive compositions. Novel methods making the dyes are also disclosed.

Abstract: 1,2-oxachalcogenol-1-ium salts are presented. A novel method for making the salts is also presented. The salts are useful in improving the quantum efficiency of organic photoconductive compositions containing organic donor compounds having photoconductive properties.

Abstract: Infrared sensitive heterogeneous photoconductive composition, elements and imaging method is presented. The composition comprises a continuous phase of a film-forming electrically insulating polymer having dispersed therein a plurality of crystalline particles consisting of an electrically insulating polymer and a trimethine thiopyrylium dye conforming to the general formula: ##STR1## wherein: X is sulfur or selenium and A.crclbar. is an anion.