Patents by Inventor Richard S. Trembulak

Richard S. Trembulak 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: 5227815
    Abstract: A quick and efficient method of testing the color registration on a multi-color electronic reprographic system includes the generation a latent image of a repeated basic test pattern across and down an photoconductive surface. Several images of this repeated test pattern are generated, one for each color in the reprographic system. Each test pattern is shifted a fixed amount so that the final output page displays a set of output figures. A figure of one color will be surrounded by at least one figure of each of the remaining colors of the reprographic system. Using this system a field technician can determine the level of misregistration between all of the colors.
    Type: Grant
    Filed: September 6, 1991
    Date of Patent: July 13, 1993
    Assignee: Xerox Corporation
    Inventors: Richard M. Dastin, Michael L. Davidson, Richard S. Trembulak, Timothy M. Hunter