Patents Assigned to Bowlby Labs, Inc.
  • Patent number: 5255023
    Abstract: An apparatus for improved paper marking is provided which increases the percentage moisture content of the paper, thereby decreasing its electrical resistivity. The paper is then dried at selected pixels which results in high electrical resistivity of those pixels. Subsequently, the paper is charged with a high negative voltage. The areas with high moisture content rapidly discharge the applied charge, whereas the areas with low moisture content retain the charge. Finally, the areas with retained charge attract toner and are fused to the paper.
    Type: Grant
    Filed: March 3, 1992
    Date of Patent: October 19, 1993
    Assignee: Bowlby Labs, Inc.
    Inventors: James O. Bowlby, Jr., David R. Nygren