Patents by Inventor Beta Y. Ni

Beta Y. Ni 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: 6833168
    Abstract: Disclosed is a recording paper which comprises (a) a cellulosic base sheet having a first surface and a second surface opposite the first surface, said base sheet having a dielectric constant of at least about 1.5 under conditions of about 50 percent relative humidity and at about 23° C., said base sheet having a dielectric constant of no more than about 10 under conditions of about 50 percent relative humidity and at about 23° C., said base sheet having, under conditions of about 50 percent relative humidity and at about 23° C., a surface resistivity of at least about 1×107 ohms per square, said base sheet having, under conditions of about 50 percent relative humidity and at about 23° C., a surface resistivity of no more than about 1×1013 ohms per square; (b) on the first surface of the base sheet an image receiving coating comprising a monomeric or polymeric material, said image receiving coating having a glass transition temperature of at least about 55° C.
    Type: Grant
    Filed: June 14, 2002
    Date of Patent: December 21, 2004
    Assignee: Xerox Corporation
    Inventors: Paul C. Lucas, Beta Y. Ni
  • Publication number: 20030232178
    Abstract: Disclosed is a recording paper which comprises (a) a cellulosic base sheet having a first surface and a second surface opposite the first surface, said base sheet having a dielectric constant of at least about 1.5 under conditions of about 50 percent relative humidity and at about 23° C., said base sheet having a dielectric constant of no more than about 10 under conditions of about 50 percent relative humidity and at about 23° C., said base sheet having, under conditions of about 50 percent relative humidity and at about 23° C., a surface resistivity of at least about 1×107 ohms per square, said base sheet having, under conditions of about 50 percent relative humidity and at about 23° C., a surface resistivity of no more than about 1×1013 ohms per square; (b) on the first surface of the base sheet an image receiving coating comprising a monomeric or polymeric material, said image receiving coating having a glass transition temperature of at least about 55° C.
    Type: Application
    Filed: June 14, 2002
    Publication date: December 18, 2003
    Applicant: Xerox Corporation
    Inventors: Paul C. Lucas, Beta Y. Ni
  • Patent number: 6125256
    Abstract: An improved apparatus and method for reducing media wrinkling, especially in envelopes, caused by transport through a fusing nip are provided. To compensate for stress build up in the media as it travels through the fusing nip, the media is bent or "pre-stressed" in a direction opposite to the nip stress prior to the media entering the fusing nip. A media support surface is positioned upstream from the fusing nip to pre-stress the media by providing pre-nip bending to the media. The media is bent in a direction opposite to the curvature of the harder nip roller prior to the media entering the fusing nip. This pre-nip bending of the media substantially offsets the nip-stress imparted on the media by the fusing nip.
    Type: Grant
    Filed: October 7, 1998
    Date of Patent: September 26, 2000
    Assignee: Xerox Corporation
    Inventors: Beta Y. Ni, Paul J. Menzel
  • Patent number: 5991564
    Abstract: A method and system media sheet handling in an electrophotographic color desktop printer are disclosed wherein a media sheet is imaged with toner on both sides of the media sheet without smudging or remelting the images. The temperature of the fusing roller and the pressure roller are controlled to keep the pressure roller temperature below the toner cold offset temperature.
    Type: Grant
    Filed: October 2, 1998
    Date of Patent: November 23, 1999
    Assignee: Tektronix, Inc.
    Inventor: Beta Y. Ni
  • Patent number: 5870661
    Abstract: An improved apparatus and method for controlling media temperature to prevent image offset and degloss in an electrostatic image forming apparatus are provided. The apparatus and method utilize a plurality of media support surfaces in the pre-nip media path to reduce heat transfer to the media in this region. An insulating channel is provided beneath the media supports to thermally isolate the media supports. One or more insulating plates may also be provided between the rollers of the fusing nip and the media support surfaces to further reduce heat transfer from the fusing members to the media support surfaces and media.
    Type: Grant
    Filed: May 4, 1998
    Date of Patent: February 9, 1999
    Assignee: Tektronix, Inc.
    Inventors: Paul J. Menzel, Beta Y. Ni, Robert C. Tidrick
  • Patent number: 5599631
    Abstract: There is provided a fuser member having as its outermost layer, a substantially homogeneous composite comprising:a) a continuous phase of a fluorocarbon elastomer selected from vinylidene fluoride based fluoroelastomers containing hexafluoropropylene and terpolymers of vinylidene fluoride, hexafluoropropylene and tetrafluoroethylene; andb) a discontinuous phase of a flourinated resin having a molecular weight between about 4,000 and 25,000.
    Type: Grant
    Filed: March 8, 1995
    Date of Patent: February 4, 1997
    Assignee: Eastman Kodak Company
    Inventors: Jiann-H Chen, Beta Y. Ni, Richard J. Kosakowski