Eastman-kodak Company

Jerome H Perlstein

Michael R Detty

George A Reynolds

Bruce J Murray

Thomas E Goliber

Chin H Chen

John M Noonan

Michael Scozzafava

Neil F Haley

Suzanne P Clark

James A Van Allan

James A VanAllan

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.

Polyesters comprising recurring photoconductive and photocrosslinkable

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.

Phosphorous diketonate electron accepting ring compounds as sensitizers

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.

Novel 3-trihalochalcogenpropenone compounds

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

4H-Thiopyran-1,1-dioxide and electrophotographic layers and elements

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.

Electrically conductive compositions

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.

Condensation polymeric photoconductors containing pendant arylamines

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.

Chalcogenopentalene compounds in electrophotography

Electrical conductive compositions

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.

Substituted benzotelluropyrones

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.

Monocyclic telluropyrones

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.

Photoconductive compositions

Photoconductive compositions having improved quantum efficiency are disclosed. The compositions comprise:

Photoconductive composition and elements comprising two different

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.

Growing community of inventors

Rochester, NY, United States of America

Jerome H Perlstein