Patents by Inventor Richard E. Sandborn

Richard E. Sandborn 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).

  • Patent number: 5270103
    Abstract: Disclosed is a receiver sheet which comprises a substrate and a coating which comprises a pigment and a binder comprising polyvinyl alcohol and an additional binder component selected from the group consisting of styrene-butadiene latices, cationic polyamines, cationic polyacrylamides, cationic polyethyleneimines, styrene-vinyl pyrrolidone copolymers, styrene-maleic anhydride copolymers, polyvinyl pyrrolidone, vinyl pyrrolidone-vinyl acetate copolymers, and mixtures thereof. When the receiver sheet is a coated paper, the paper substrate has a Hercules sizing degree of at least about 50 seconds and a basis weight of less than about 90 grams per square meter. When the receiver sheet is a transparency, the substrate is substantially transparent. The receiver sheet is particularly suitable for printing with aqueous based inks, such as those employed in ink jet printing systems.
    Type: Grant
    Filed: November 21, 1990
    Date of Patent: December 14, 1993
    Assignee: Xerox Corporation
    Inventors: John F. Oliver, Richard E. Sandborn