Patents by Inventor Joseph C. Mammino

Joseph C. Mammino 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: 5752144
    Abstract: A method of fabricating a blotter roll for uniformly conditioning liquid images consisting of toner particles and carrier liquid. The method includes electroforming a semi-rigid resilient and perforated metallic substrate for preventing undesirable impressions of substrate outlines and footprints on an image being conditioned. The resilient metallic substrate is electroformed so as to be seamless and to have a cylindrical hollow interior, and first and second open ends.
    Type: Grant
    Filed: April 1, 1996
    Date of Patent: May 12, 1998
    Assignee: Xerox Corporation
    Inventors: Joseph C. Mammino, William G. Herbert, Shu Chang, Theodore C. Ludwig
  • Patent number: 5172170
    Abstract: An apparatus in which a donor roll advances toner to an electrostatic latent image recorded on a photoconductive member. A plurality of electrical conductors are located in grooves in the donor roll. The electrical conductors are spaced from one another and adapted to be electrically biased in the development zone to detach toner from the donor roll so as to form a toner cloud in the development zone. In the development zone, toner is attracted from the toner cloud to the latent image. In this way, the latent image is developed with toner.
    Type: Grant
    Filed: March 13, 1992
    Date of Patent: December 15, 1992
    Assignee: Xerox Corporation
    Inventors: Dan A. Hays, Michael A. Morgan, William H. Wayman, Paul J. Brach, Joseph C. Mammino