Patents by Inventor Kai K. Lu

Kai K. Lu 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: 5861900
    Abstract: The center-to-center spacing of pens containing a "problematic" combination of inks is increased to introduce a relatively small additional time-delay in which those particular constituents are applied to the same or adjacent areas during a single pass, thereby providing a substantial improvement in print qualities (such as Halo or Bleed) on plain (untreated) and special purpose (matt, glossy, transparent) print media, without substantially increasing the throughput rate. The center-to-center spacing of a critical combination of pens is substantially greater than the width of a single pen, thereby providing an increased delay that is equal to the increased spacing divided by the traverse speed.
    Type: Grant
    Filed: September 4, 1996
    Date of Patent: January 19, 1999
    Assignee: Hewlett-Packard Company
    Inventors: Kai K. Lu, Mark L. Choy, Gary W. Byers, Ronald A. Askeland