Eastman-Kodak Company

Hsin-Chia Kan

Daniel Jude Harrison

Noel R Vanier

Joseph A Pavlisko

Paul D Yacobucci

William J Staudenmayer

M Akram Sandhu

Bruce R Benwood

Hans R Grashof

John F Wright

A reusable electrophotographic imaging element having a photoconductive surface layer of which the binder resin comprises a crystalline side chain polyester or a block copolyester or copolycarbonate having a crystalline side chain polyester block. The layer has low surface adhesion which improves the transfer of toner images to receiver sheets, improves the cleaning efficiency and prevents or reduces toner scumming on the surface layer.

Electrophotographic element having low surface adhesion

Image transfer properties of an electrophotographic imaging element are improved by heterogeneously dispersing, as a separate phase within the photoconductive surface layer of the element, finely divided particles of an abhesive substance which is nonconductive and spreadable and to which toner particles adhere less strongly than to the composition of the surface layer in the abhesive substance. An example of the abhesive substance is a particulate low molecular weight telomer of tetrafluoroethylene.

Reusable electrophotographic element

A reusable electrophotographic imaging element having a photoconductive surface layer in which the binder resin comprises a block copolyester or copolycarbonate having a fluorinated polyether block. The layer has low surface adhesion and affords improved transfer of toner images to receiver sheets.

Electrophotographic element

A dye-donor element for thermal dye transfer comprising a poly(ethylene terephthalate) support having on one side thereof a dye layer and on the other side a subbing layer and a slipping layer, the subbing layer comprising a random, linear copolyester derived from at least one aromatic dibasic acid and at least one aliphatic diol.

Polyester subbing layer for slipping layer of dye-donor element used in

A dye-donor element for thermal dye transfer comprising a support having on one side thereof a dye layer and on the other side a slipping layer consisting essentially of a lubricating material of a polyethylene glycol having a number average molecular weight of about 6000 or above or fatty acid esters of polyvinyl alcohol.

Lubricant slipping layer for dye-donor element used in thermal dye

A dye-doner element for thermal dye transfer comprising a support having on one side thereof a dye layer and on the other side a slipping layer comprising a lubricating material dispersed in a polymeric binder, the lubricating material being poly(vinyl stearate), poly(caprolactone) or a straight chain alkyl or polyethylene oxide perfluoroalkylated ester or perfluoroalkylated ether.

Slipping layer for dye-donor element used in thermal dye transfer

An electrographic, dry two-component developer composition is disclosed comprising triboelectrically charged carrier particles and oppositely charged toner particles. The toner particles contain, as a binder, an amorphous, random polyester-amide containing amide linkages in the polymer backbone and is derived from certain dicarboxylic acids, compounds containing primary amino groups and compounds containing hydroxyl groups. A process for using the developer composition to form toner image copies of an original is also disclosed.

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Fairport, NY, United States of America

Hsin-Chia Kan