Patents by Inventor Lawrence Paul Demejo

Lawrence Paul Demejo 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).

  • Electrostatographic method using an overlay toner
    Patent number: 5912097
    Abstract: A method is provided for increasing the release temperature from the fuser in copying and printing processes comprising the steps of forming a toner layer on a receiver with an imagewise overlay toner on top and fixing the layers of toner by contact with a fuser.
    Type: Grant
    Filed: July 6, 1993
    Date of Patent: June 15, 1999
    Assignee: Eastman Kodak Company
    Inventors: Muhammad Aslam, Lawrence Paul Demejo, Dinesh Tyagi
  • Amorphous fluoropolymer coated fusing belt
    Patent number: 5853892
    Abstract: A fuser belt comprising an amorphous fluoropolymer outer layer for fusing a thermoplastic resin toner image to a substrate produces high gloss images, wherein the amorphous fluoropolymer has the structure: ##STR1## in which m is 20 mole percent or 35 mole percent and n is 65 mole percent or 80 mole percent.
    Type: Grant
    Filed: June 28, 1996
    Date of Patent: December 29, 1998
    Assignee: Eastman Kodak Company
    Inventors: Jiann Hsing Chen, Lawrence Paul Demejo, Gary Frederick Roberts, Muhammed Aslam
  • Amorphous fluoropolymer coated fusing member
    Patent number: 5720703
    Abstract: A fuser member for fusing a thermoplastic resin toner image to a substrate having:(a) a rigid metal core;(b) a base cushion layer covering the metal core wherein the base cushion comprises a condensation cured polydimethylsiloxane or an addition cured silicone rubber;(c) a cured fluoroelastomer layer covering the base cushion layer;(d) an aminosilane adhesive coveting the fluoroelastomer layer; and(e) an amorphous fluoropolymer covering the aminosilane adhesive layer.
    Type: Grant
    Filed: June 28, 1996
    Date of Patent: February 24, 1998
    Assignee: Eastman Kodak Company
    Inventors: Jiann Hsing Chen, Lawrence Paul Demejo, Gary Frederick Roberts
  • Coated fuser members and methods of making coated fuser members
    Patent number: 5709949
    Abstract: A method of making a fuser member such as a fuser roller, pressure roller, or fuser belt, comprising of bonding an outermost fluoropolymer resin layer to an inner fluoroelastomer layer by means of a fluoropolymer-containing polyamide-imide primer layer.
    Type: Grant
    Filed: January 18, 1996
    Date of Patent: January 20, 1998
    Assignee: Eastman Kodak Company
    Inventors: Jiann-Hsing Chen, Lawrence Paul Demejo, Gary Frederick Roberts, Richard John Kosakowski, Muhammed Aslam, John Euguene Derimiggio
  • Process for controlling gloss in electrostatic images
    Patent number: 5709973
    Abstract: A process for controlling gloss to fused toner images, comprising the steps of:A. passing an element bearing an unfused toner image through a fusing zone, a cooling zone and a release zone; andB. bringing the element bearing the unfused toner image into pressure contact with a fusing belt, thereby fusing the toner image to the element; characterized in that the fusing belt is a metal having(i) an unmatted powder coated tetrafluoroethylene/hexafluoropropylene (FEP) copolymer to provide a fused toner image having a coating gloss of 54-64;(ii) an unmatted powder coated polytetrafluoroethylene-co-perfluoropropyl vinylether copolymer (PFA) to provide a fused toner image having a coating gloss of 11-18 and(iii) an unmatted aqueous spray coated blend of polytetrafluoroethylene (PTFE) and polytetrafluoroethylene-perfluorinated vinyl ether (PFA) to provide a fused toner image having a coating gloss of 5-12.
    Type: Grant
    Filed: June 28, 1996
    Date of Patent: January 20, 1998
    Assignee: Eastman Kodak Company
    Inventors: Jiann Hsing Chen, Lawrence Paul Demejo, Muhammed Aslam
  • Fuser belts with improved release and gloss
    Patent number: 5708948
    Abstract: This invention provides a fuser belt comprising a substrate and a coating on said substrate, said coating comprises a resin made by curing a composition comprising siloxanes having a ratio of difunctional to trifunctional units of 1:1 to 1:2.7 and at least 90% of total number of functional units in said siloxanes are difunctional and trifunctional units, a weight average molecular weight of 5,000 to 50,000 grams/mole, and an alkyl to aryl ratio of 1:0.1 to 1:1.2.
    Type: Grant
    Filed: August 2, 1996
    Date of Patent: January 13, 1998
    Assignee: Eastman Kodak Company
    Inventors: Jiann-H. Chen, Muhammed Aslam, Lawrence Paul Demejo
  • Transparency feed with amorphous fluoropolymer coated pressure roll
    Patent number: 5678154
    Abstract: A fuser for fixing electrostatographic images comprising a fusing roll and a pressure roll is disclosed. The pressure roll has a rigid metal core coated with an amorphous fluoropolymer. The fluoropolymer has a surface energy up to 16 dyne/cm and a coefficient of friction from 0.4 to 1.0.
    Type: Grant
    Filed: June 28, 1996
    Date of Patent: October 14, 1997
    Assignee: Eastman Kodak Company
    Inventors: Jiann Hsing Chen, Lawrence Paul Demejo, Borden Mills, Gary Frederick Roberts