Patents Represented by Attorney Carl R. Ruoff
  • Patent number: 7700248
    Abstract: Disclosed are polymers which include tertiary aryl amine moieties that can function as hole transport agents and which also have reactive silane groups thereon capable of being condensed to a silsesquioxane composition, as well as the silsesquioxane compositions prepared therefrom. The silsesquioxanes can be coated onto substrates to form abrasion-resistant layers having hole transport properties useful in devices that require charge transport properties, such as light-emitting diodes and organic electrophotographic elements such as photoreceptors or photoconductors. Also disclosed are electrophotographic elements which comprise 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, comprises the condensed reaction product of the disclosed polymers.
    Type: Grant
    Filed: July 8, 2003
    Date of Patent: April 20, 2010
    Assignee: Eastman Kodak Company
    Inventors: Xin Jin, Wayne T. Ferrar, David S. Weiss, Louis J. Sorriero
  • Patent number: 7341790
    Abstract: A toner fuser member contains a substrate on which is disposed a toner release surface layer formed from a composition that includes a silsesquioxane and a curable phenolic resin. On curing, the composition forms an interpenetrating polymer network of the silsesquioxane and phenolic resin.
    Type: Grant
    Filed: December 20, 2004
    Date of Patent: March 11, 2008
    Assignee: Eastman Kodak Company
    Inventors: Jiann-Hsing Chen, Joseph A. Pavlisko, Muhammed Aslam, Wayne T. Ferrar
  • Patent number: 6143484
    Abstract: The present invention is a method for stabilizing a photographic coating melt. The photographic melt includes an aqueous medium and a dispersed liquid organic phase containing an ultraviolet ray absorbing compound, and an emulsion containing silver halide particles having an average equivalent circular diameter of from 0.03 to 0.10 microns. The photographically useful ultraviolet ray absorber compound is soluble in a liquid organic phase and substantially insoluble in water. The method includes the step of adding to the emulsion containing silver halide particles a sufficient amount of surfactant to passify surfaces of the silver halide particles. The present invention is also a method of preparing a photographic coating melt. A dispersion is prepared which includes an aqueous medium, a dispersed liquid organic phase and an ultraviolet ray absorber compound wherein the ultraviolet ray absorber compound is soluble in the dispersed liquid organic phase and substantially insoluble in water.
    Type: Grant
    Filed: May 6, 1999
    Date of Patent: November 7, 2000
    Assignee: Eastman Kodak Company
    Inventors: Kurt M. Schroeder, Jayme D. Ribeiro, Gary L. Slater, Timothy J. Hubert
  • Patent number: 5866285
    Abstract: The present invention is an imaging element including a support, at least one image-forming layer and an auxiliary layer. The auxilary layer is formed by providing a coating composition of a fluoroolefin-vinyl ether copolymer dissolved in an organic medium, coating the coating composition on the support and drying the coating composition. The present invention also includes a coating composition for use in an imaging element including a fluoroolefin-vinyl ether copolymer dissolved in an organic medium.
    Type: Grant
    Filed: June 12, 1997
    Date of Patent: February 2, 1999
    Assignee: Eastman Kodak Company
    Inventors: Charles C. Anderson, Yongcai Wang