Patents by Inventor Robert E. Trott

Robert E. Trott 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: 5978630
    Abstract: A system for removing residual contaminants from an image conditioning apparatus that removes excess liquid from a developed image made up of toner particles immersed in a liquid carrier medium on an image bearing member. The system includes a vacuum blotting device that contacts the liquid developed image and absorbs a portion of the liquid carrier and residual contaminants remain thereon. A contact member adapted to be shifted from a non-operative position spaced from the vacuum blotting device, to an operative position in contact with the vacuum blotting device operates to transfer the contaminants therefrom. A scraper removes the transferred contaminants from the contact member. The contact member is pivotally mounted about the pivot point to effect shifting of the contact member between the non-operative and the operative position.
    Type: Grant
    Filed: January 8, 1998
    Date of Patent: November 2, 1999
    Assignee: Xerox Corporation
    Inventors: Shu Chang, John F. Knapp, Lawrence Floyd, Jr., Stephen T. Chai, Robert E. Trott
  • Patent number: 5481341
    Abstract: A roller for controlling the application of carrier liquid to an image bearing member in an electrostatographic reproduction apparatus having a rigid porous electroconductive supportive core, a conformable microporous covering provided around the core, and a pressure controller. The pressure controller is located to provide a positive or negative pressure within the porous core and across a cross section of the core and covering.
    Type: Grant
    Filed: August 18, 1993
    Date of Patent: January 2, 1996
    Assignee: Xerox Corporation
    Inventors: Donald S. Sypula, Santokh S. Badesha, Shu Chang, John F. Knapp, Robert E. Trott, Stephen T. Chai, Henry R. Till, Joseph Mammino
  • Patent number: 5305064
    Abstract: An electrophotographic apparatus in which toner particles are moved from the toner hopper or dispenser cartridge to the developer housing and onto the donor roller in a single component development system for use in color reprographic systems. A rotating holey tube toner agitator is modified to incorporate structure or grooves on the outer peripheral surface. Further, by placing a shrouded toner dispense auger inside the holey tube, the development system architecture stays compact and improved toner powder pushing through the pre-load of toner on the donor roller results, thereby insuring delivery of fresh toner evenly across the length of the developer housing. With more efficient pre-load, agitator rotational speed and bias can be reduced, leading to less toner effluents emanating from the developer housing without adversely affecting the cycle to cycle donor roller toner reload.
    Type: Grant
    Filed: May 20, 1993
    Date of Patent: April 19, 1994
    Assignee: Xerox Corporation
    Inventors: Robert E. Trott, Lawrence Floyd, Jr., John F. Knapp
  • Patent number: 5204495
    Abstract: An apparatus which develops a latent image recorded on an image receiving member with developer material. A donor roll is positioned in a chamber of a housing having a supply of developer material therein. The donor roll transports a metered layer of developer material into contact with the latent image to develop the latent image. A rotating and translating brush gently disturbs the metered layer of developer material on the donor roll. This substantially prevent the accumulation of developer material agglomerates on the donor roll so as to create a more stable, uniform developer material layer for development of the latent image therewith.
    Type: Grant
    Filed: June 1, 1992
    Date of Patent: April 20, 1993
    Assignee: Xerox Corporation
    Inventors: Lawrence Floyd, Jr., John F. Knapp, Robert E. Trott, Norman W. Czubaj, Jr.
  • Patent number: 5162183
    Abstract: A surface layer on an imaging member has a surface roughness which reduces the force necessary for blade cleaning, reduces blade edge truck, reduces blade/substrate friction, inhibits the formation of toner-type deposits on the imaging surface, and/or reduces or eliminates light interference patterns resulting from coherent light, for example, from a raster output scanner.
    Type: Grant
    Filed: May 10, 1991
    Date of Patent: November 10, 1992
    Assignee: Xerox Corporation
    Inventors: Nero R. Lindblad, Richard L. Schank, Richard W. Bigelow, Herbert C. Relyea, Robert E. Trott, Andrew R. Melnyk, Merlin E. Scharfe, Walter F. Leising