Patents by Inventor Shyh-Hua E. Jao
Shyh-Hua E. Jao has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20100126021Abstract: The present invention provides a method of resurfacing a pressure member in a printer having a fuser member that is externally heated by a heater roller. The method includes providing a pressure member having an outer surface of a high temperature fluorothermoplastic. When it is determined that the outer surface is in need of resurfacing, the fuser member is removed from the printer, and the pressure member is mounted in the place of the fuser member. The pressure member is rotated at a speed of at least 1 rpm while engaging the outer surface of the fuser member with the heating roller normally used to heat the fuser member at a pressure of at least 5 psi at a temperature of at least 10° C. below the fluorothermoplastic melting temperature for a time sufficient to resurface of the outer surface of the pressure member.Type: ApplicationFiled: November 25, 2008Publication date: May 27, 2010Inventors: James H. Hurst, Shyh-Hua E. Jao, Jiann-Hsing Chen, Muhammed Aslam, Joseph A. Pavlisko
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Patent number: 7682542Abstract: A method of making a fuser roller comprising: providing a fuser roller an outer layer comprising a fluorothermoplastic polymer; and annealing the outer surface of the outer layer through contact the outer layer by means of heat and pressure.Type: GrantFiled: June 22, 2006Date of Patent: March 23, 2010Assignee: Eastman Kodak CompanyInventors: Jiann-Hsing Chen, Joseph A. Pavlisko, Shyh-Hua E. Jao, Muhammed Aslam
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Publication number: 20090250830Abstract: The present invention is an apparatus for refurbishing a fusing member. The apparatus includes a fusing member that contacts the toner image on a receiver medium and fuses the toner image to the receiver medium. The fusing member has an outer contact surface of a fluorothermoplastic resin The apparatus includes a tooling member positionable adjacent to the outer contact surface of the fusing member such that a pressure nip is formed between the outer contact surface of the fusing member and the tooling member. A heat source is provided for transferring heat to the fusing member and the tooling member, wherein the surface of the fuser member is engagable with the tooling member to rotate at a speed of at least 1 rpm at a pressure of at least 5 psi and at a temperature of at least 10° C. below the thermoplastic melting temperature of the outer contact surface for a time sufficient to resurface of the outer surface of the fuser member.Type: ApplicationFiled: April 29, 2009Publication date: October 8, 2009Inventors: Shyh-Hua E. Jao, Jiann-Hsing Chen, James D. Shifley, Muhammed Aslam, Joseph A. Pavlisko
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Patent number: 7565091Abstract: The present invention is an apparatus for refurbishing a fusing member. The apparatus includes a fusing member that contacts the toner image on a receiver medium and fuses the toner image to the receiver medium. The fusing member has an outer contact surface of a fluorothermoplastic resin The apparatus includes a tooling member positionable adjacent to the outer contact surface of the fusing member such that a pressure nip is formed between the outer contact surface of the fusing member and the tooling member. A heat source is provided for transferring heat to the fusing member and the tooling member, wherein the surface of the fuser member is engagable with the tooling member to rotate at a speed of at least 1 rpm at a pressure of at least 5 psi and at a temperature of at least 10° C. below the thermoplastic melting temperature of the outer contact surface for a time sufficient to resurface of the outer surface of the fuser member.Type: GrantFiled: May 9, 2007Date of Patent: July 21, 2009Assignee: Eastman Kodak CompanyInventors: Shyh-Hua E. Jao, Jiann-Hsing Chen, James D. Shifley, Muhammed Aslam, Joseph A. Pavlisko
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Patent number: 7534492Abstract: The fuser members of this invention include a core member that includes a rigid outer surface. An adhesion promoter layer comprising silane or epoxy silane coupling is disposed on the outer surface of the core member. A resilient layer comprising an elastomer is disposed on the adhesion promoter layer. A tie layer is disposed on the resilient layer, the tie layer being made of fluoropolymers, fluoroelastomers, fluorocarbon thermoplastic copolymers and mixtures thereof. A primer layer, disposed on the tie layer, comprising perfluoroalkoxy resin and trifluoroethylene-perfluoroethyl vinyl ether-perfluoroethylene vinyl phosphate or a mixture of perfluoroalkoxy resin and trifluoroethylene-perfluoroethylvinyl ether; and an outer layer of fluoropolymer resin made from polytetrafluoroethylene, polyperfluoroalkoxy-tetrafluoroethylene, polyfluorinated ethylene-propylene and blends thereof is disposed on the primer layer.Type: GrantFiled: June 22, 2006Date of Patent: May 19, 2009Assignee: Eastman Kodak CompanyInventors: Jiann-Hsing Chen, Joseph A. Pavlisko, Shyh-Hua E. Jao, Po-Jen Shih
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Patent number: 7531237Abstract: The present invention is a fuser member that includes a core member having a rigid outer surface. A resilient layer made of an elastomer is disposed on outer surface. A primer layer of perfluoroalkoxy resin and trifluoroethylene-perfluoroethylvinyl ether-perfluoroethylene vinyl phosphate or a mixture of perfluoroalkoxy resin and trifluoroethylene-perfluoroethylvinyl bonds the resilient layer and an outer layer. The outer layer comprises fluoropolymer resin selected from the group consisting of polytetrafluoroethylene, polyperfluoroalkoxy-tetrafluoroethylene, polyfluorinated ethylene-propylene, and blends thereof.Type: GrantFiled: June 22, 2006Date of Patent: May 12, 2009Assignee: Eastman Kodak CompanyInventors: Jiann-Hsing Chen, Joseph A. Pavlisko, Shyh-Hua E. Jao, Robert A. Lancaster
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Patent number: 7494706Abstract: The fuser members of this invention include a core member that includes a rigid outer surface. A resilient layer comprising an elastomer is optionally disposed on the cylindrical outer surface of the core member. A tie layer is disposed on the resilient layer or the outer surface if no resilient layer is present, the tie layer being made of fluoropolymers, fluoroelastomers, fluorocarbon thermoplastic copolymers and mixtures thereof. An outer layer of fluoropolymer resin made from polytetrafluoroethylene, polyperfluoroalkoxy-tetrafluoroethylene, polyfluorinated ethylene-propylene and blends thereof, is disposed on the tie layer.Type: GrantFiled: June 22, 2006Date of Patent: February 24, 2009Assignee: Eastman Kodak CompanyInventors: Jiann-Hsing Chen, Joseph A. Pavlisko, Shyh-Hua E. Jao, Nataly Boulatnikov
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Publication number: 20080280035Abstract: The present invention provides a method of resurfacing a fuser member in-situ. The method includes providing a fuser member having an outer surface of a high temperature fluorothermoplastic. When it is determined that the outer surface is in need of resurfacing, the fuser member is rotated at a speed of at least 1 rpm while engaging the outer surface of the fuser member with at least one heating roller at a pressure of at least 5 psi at a temperature of at least 10° C. below the fluorothermoplastic melting temperature for a time sufficient to resurface of the outer surface of the fuser member.Type: ApplicationFiled: May 9, 2007Publication date: November 13, 2008Inventors: Shyh-Hua E. Jao, Jiann-Hsing Chen, Muhammed Aslam, Joseph A. Pavlisko, James H. Hurst
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Publication number: 20080279582Abstract: The present invention is an apparatus for refurbishing a fusing member. The apparatus includes a fusing member that contacts the toner image on a receiver medium and fuses the toner image to the receiver medium. The fusing member has an outer contact surface of a fluorothermoplastic resin The apparatus includes a tooling member positionable adjacent to the outer contact surface of the fusing member such that a pressure nip is formed between the outer contact surface of the fusing member and the tooling member. A heat source is provided for transferring heat to the fusing member and the tooling member, wherein the surface of the fuser member is engagable with the tooling member to rotate at a speed of at least 1 rpm at a pressure of at least 5 psi and at a temperature of at least 10° C. below the thermoplastic melting temperature of the outer contact surface for a time sufficient to resurface of the outer surface of the fuser member.Type: ApplicationFiled: May 9, 2007Publication date: November 13, 2008Inventors: Shyh-Hua E. Jao, Jiann-Hsing Chen, James D. Shifley, Muhammed Aslam, Joseph A. Pavlisko
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Publication number: 20070296122Abstract: A method of making a fuser roller comprising: providing a fuser roller an outer layer comprising a fluorothermoplastic polymer; and annealing the outer surface of the outer layer through contact the outer layer by means of heat and pressure.Type: ApplicationFiled: June 22, 2006Publication date: December 27, 2007Inventors: Jiann-Hsing Chen, Joseph A. Pavlisko, Shyh-Hua E. Jao, Muhammed Aslam
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Publication number: 20070298252Abstract: The present invention is a fuser member that includes a core member having a rigid outer surface. A resilient layer made of an elastomer is disposed on outer surface. A primer layer of perfluoroalkoxy resin and trifluoroethylene-perfluoroethylvinyl ether-perfluoroethylene vinyl phosphate or a mixture of perfluoroalkoxy resin and trifluoroethylene-perfluoroethylvinyl bonds the resilient layer and an outer layer. The outer layer comprises fluoropolymer resin selected from the group consisting of polytetrafluoroethylene, polyperfluoroalkoxy-tetrafluoroethylene, polyfluorinated ethylene-propylene, and blends thereof.Type: ApplicationFiled: June 22, 2006Publication date: December 27, 2007Inventors: Jiann-Hsing Chen, Joseph A. Pavlisko, Shyh-Hua E. Jao, Robert A. Lancaster
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Publication number: 20070298217Abstract: The fuser members of this invention include a core member that includes a rigid outer surface. An adhesion promoter layer comprising silane or epoxy silane coupling is disposed on the outer surface of the core member. A resilient layer comprising an elastomer is disposed on the adhesion promoter layer. A tie layer is disposed on the resilient layer, the tie layer being made of fluoropolymers, fluoroelastomers, fluorocarbon thermoplastic copolymers and mixtures thereof. A primer layer, disposed on the tie layer, comprising perfluoroalkoxy resin and trifluoroethylene-perfluoroethyl vinyl ether-perfluoroethylene vinyl phosphate or a mixture of perfluoroalkoxy resin and trifluoroethylene-perfluoroethylvinyl ether; and an outer layer of fluoropolymer resin made from polytetrafluoroethylene, polyperfluoroalkoxy-tetrafluoroethylene, polyfluorinated ethylene-propylene and blends thereof is disposed on the primer layer.Type: ApplicationFiled: June 22, 2006Publication date: December 27, 2007Inventors: Jiann-Hsing Chen, Joseph A. Pavlisko, Shyh-Hua E. Jao, Po-Jen Shih