Patents by Inventor Bryan J. Roof

Bryan J. Roof 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).

  • Publication number: 20080085139
    Abstract: A fusing apparatus having a segmented external heater is provided. The fusing apparatus includes a rotatable pressure roller, a rotatable heated fusing member having an external surface forming a fusing nip with the pressure roller, and a rotatable segmented external heater mounted in heating nip contact with the external surface of the fusing member for heating the external surface of the fusing member, the rotatable segmented external heater having (a) an endless rotatable shell defining an interior surface and an exterior surface, a first end, a second end, and an axis of rotation; (b) a plural number of heating elements each having an end-to-end length and being arranged end-to-end in series and parallel to the axis of rotation; and (c) a controller connected to the plural number of heating elements and to the rotatable heated fusing member controlling the temperature of the external surface the fusing member.
    Type: Application
    Filed: October 4, 2006
    Publication date: April 10, 2008
    Applicant: Xerox Corporation
    Inventor: Bryan J. Roof
  • Patent number: 7336920
    Abstract: A printing system includes first and second marking devices for applying images to print media. A primary fusing device is associated with each of the first and second marking devices for applying a primary fusing treatment to the images applied to print media by the first and second marking devices. A secondary fusing module receives printed media from the first and second marking devices, the secondary fusing module including first and second secondary fusing devices which selectively apply a further fusing treatment to the images applied to the printed media.
    Type: Grant
    Filed: September 27, 2005
    Date of Patent: February 26, 2008
    Assignee: Xerox Corporation
    Inventors: David G. Anderson, Steven R. Moore, Gerald M. Fletcher, Bryan J. Roof, Eric S. Hamby, Robert M. Lofthus
  • Patent number: 7324779
    Abstract: A printing system includes first and second marking devices for applying images to print media. A first primary fusing device is associated with the first marking device for applying a primary fusing treatment to the images applied to print media by the first marking device. A second primary fusing device is associated with the second marking device for applying a primary fusing treatment to the images applied to print media by the second marking device. At least one secondary fusing device receives printed media from the first and second marking devices. The secondary fusing device selectively applies a further fusing treatment to at least a portion of the images applied to the printed media to increase a uniformity of an appearance characteristic between printed images generated by the first marking device and the second marking device.
    Type: Grant
    Filed: September 27, 2005
    Date of Patent: January 29, 2008
    Assignee: Xerox Corporation
    Inventors: David G. Anderson, Steven R. Moore, Gerald M. Fletcher, Bryan J. Roof, Eric S. Hamby, Robert M. Lofthus
  • Patent number: 7322689
    Abstract: An offset printing apparatus for transferring a phase change ink onto a print medium having a phase change ink component for applying a phase change ink in a phase change ink image; an imaging member for accepting the phase change ink image from the phase change ink component, and transferring the phase change ink image from the imaging member to the print medium, and a transfix pressure member positioned in association with the imaging member, wherein the print medium passes through a nip formed between the imaging member and the transfix pressure member, and wherein the imaging member exerts pressure on the transfix pressure member so as to transfer and fuse the phase change ink image from the imaging member to the print medium, and further wherein the transfix pressure member includes a substrate; an intermediate layer positioned on the substrate; and an outer layer on the intermediate layer and the outer layer has a modulus of from about 1 to about 50 MPa, a thickness of from about 0.
    Type: Grant
    Filed: April 25, 2005
    Date of Patent: January 29, 2008
    Assignee: Xerox Corporation
    Inventors: Jeffrey R. Kohne, Santokh S. Badesha, Edward B. Caruthers, Jr., Anthony Yeznach, Bryan J. Roof, Donald M. Bott, James E. Williams, Michael C. Gordon
  • Patent number: 7310493
    Abstract: A glossing subsystem is provided that receives duplexed output media that has been selectively marked on a first side and a second side. The glossing subsystem includes: a first glossing unit that selectively provides a first gloss level to a first side of the duplexed output media; and, a second glossing unit that selectively provides a second gloss level to a second side of the duplexed output media.
    Type: Grant
    Filed: June 24, 2005
    Date of Patent: December 18, 2007
    Assignee: Xerox Corporation
    Inventors: Bryan J. Roof, Gerald M. Fletcher
  • Patent number: 7308218
    Abstract: A printing device includes: multiple marking engines that during operation place marks on output media; and, a power supply that selectively supplies selected levels of power to the marking engines for selected times so as to ready the marking engines for operation from a dormant state. Power from the power supply is selectively distributed to the multiple marking engines so that at least one of the marking engines is readied for operation prior to at least one of the other marking engines.
    Type: Grant
    Filed: June 14, 2005
    Date of Patent: December 11, 2007
    Assignee: Xerox Corporation
    Inventors: Bryan J. Roof, Donald M. Bott
  • Publication number: 20070281165
    Abstract: A fuser member having a substrate; an outer layer containing a silicone or fluoropolymer; and a release agent material coating on the outer layer, wherein the release agent material coating includes a perfluorinated polyether having a skeleton of Formulas I or II or mixtures thereof: CF3—(CF2CF2)m—O—(R1R2O)—(R3R3O)n—(R3O)p—(CF2)q—CF3Formula I wherein R1 is selected from the group consisting of CF2, CF—CF3 and —NR4R5; R2 is selected from the group consisting of CF2, CF—CF3, and —NR4R5; R3 is selected from the group consisting of CF2 and CF3; R4 is selected from the group consisting of hydrogen, alkyl group having from about 1 to about 18 carbon atoms, arylalkyl group having from about 7 to about 18 carbon atoms, mercapto, hydride and carbinol functional group; R5 is selected from the group consisting of alkyl having from about 1 to about 20 carbons, and a fluoroalkyl having from about 2 to about 10 carbons; m is a number of 0 or 1; n is a number of from about 0 to about 500; p is a number of from about 0 to
    Type: Application
    Filed: May 31, 2006
    Publication date: December 6, 2007
    Inventors: David J. Gervasi, Bryan J. Roof, Santokh S. Badesha
  • Patent number: 7283762
    Abstract: In a tightly integrated parallel printing architecture having at least a first print engine and a second print engine, the first print engine and a second print engine includes a first fuser system having a first fusing member for fusing marking particles on the substrate and second fuser system having a second fusing member for fusing marking particles on the substrate, including: a calibration system for maintaining uniform gloss characteristics between printed images generated by the first fusing system and the second fusing system, the calibration system including sensor for sensing a gloss value indicative of the gloss of the fused marking particles on the substrate.
    Type: Grant
    Filed: November 30, 2004
    Date of Patent: October 16, 2007
    Assignee: Xerox Corporation
    Inventor: Bryan J. Roof
  • Patent number: 7245844
    Abstract: A printing system includes first and second marking engines. First and second fusers are associated with the marking engines, respectively. The printing system has a first mode of operation in which print media is fused by both fusers and a second mode of operation in which at least a portion of the print media is fused by the second fuser, which portion has not been previously fused by the first fuser. The second fuser has first and second fuser operating modes when the printing system is in the first and second modes of operation, respectively. The second fuser applies a first energy input to the print media in the first fuser operating mode and a second energy input, different from the first energy input, to the print media in the second fuser operating mode.
    Type: Grant
    Filed: March 31, 2005
    Date of Patent: July 17, 2007
    Assignee: Xerox Corporation
    Inventors: Jeremy C. de Jong, Bryan J. Roof, Anthony S. Condello
  • Patent number: 7139496
    Abstract: A fuser system and method for a xerographic device having improved self-stripping capabilities for a wide latitude of substrate media. The fuser system includes a fuser member and a pressure member in which the pressure member is made to exert a predetermined pressure upon the fuser member. In applying this pressure load, a nip is formed having a nip width between the fuser member and the pressure member. A predetermined creep exists during normal fusing of a substrate. A load adjustment device is provided to momentarily increase the exerted pressure as a leading edge or other portion of the substrate passes through, and/or in the vicinity of, the nip, thereby increasing the creep magnitude momentarily and improving self-stripping capabilities.
    Type: Grant
    Filed: June 24, 2005
    Date of Patent: November 21, 2006
    Assignee: Xerox Corporation
    Inventors: Bryan J. Roof, Donald M. Bott, Anthony S. Condello
  • Patent number: 6746112
    Abstract: A fluid container, particularly a replaceable ink container for an ink jet printer, and the method for opening that container reduce the likelihood of ejecting ink into the environment when a user opens the container. The ink container includes a housing formed of several container walls, with a fluid port through one of the container walls. An expansion element formed of a deformable wall portion of one of the container walls has an opening element attached to it so that the expansion element can be moved from an inner position to an outer position to expand the volume of the interior of the housing, thus lowering the pressure in the interior of the housing. The user opens a vent opening after expanding the expansion element to equalize the pressure in the interior of the ink container and the ambient external environment before opening the fluid port.
    Type: Grant
    Filed: October 3, 2002
    Date of Patent: June 8, 2004
    Assignee: Xerox Corporation
    Inventor: Bryan J. Roof
  • Publication number: 20040066434
    Abstract: A fluid container, particularly a replaceable ink container for an ink jet printer, and the method for opening that container reduce the likelihood of ejecting ink into the environment when a user opens the container. The ink container includes a housing formed of several container walls, with a fluid port through one of the container walls. An expansion element formed of a deformable wall portion of one of the container walls has an opening element attached to it so that the expansion element can be moved from an inner position to an outer position to expand the volume of the interior of the housing, thus lowering the pressure in the interior of the housing. The user opens a vent opening after expanding the expansion element to equalize the pressure in the interior of the ink container and the ambient external environment before opening the fluid port.
    Type: Application
    Filed: October 3, 2002
    Publication date: April 8, 2004
    Applicant: Xerox Corporation
    Inventor: Bryan J. Roof
  • Patent number: 6663234
    Abstract: A fluid cartridge for dispensing fluid, such as liquid ink for a drop on demand ink jet printer, includes a housing that encloses a capillary chamber, and has an outlet port through the one wall of the housing into the capillary chamber. Capillary material in the capillary chamber is arranged so that it has a higher density adjacent the outlet port than away from the outlet port, to enhance the flow of the fluid toward the outlet port. The interior of the capillary chamber is structured to provide greater compression to the capillary material around the outlet port, and provide stability to retain the variable compression of the capillary material.
    Type: Grant
    Filed: March 15, 2002
    Date of Patent: December 16, 2003
    Assignee: Xerox Corporation
    Inventors: Bryan J. Roof, Dennis M. Lengyel, Edward M. Carrese, David P. Breemes, Sr., Louis F. Lavallee, Sara Reynolds, Hiep H. Nguyen, Eric A. Merz, Christopher S. Mullin
  • Publication number: 20020186286
    Abstract: A fluid cartridge for dispensing fluid, such as liquid ink for a drop on demand ink jet printer, includes a housing that encloses a capillary chamber, and has an outlet port through the one wall of the housing into the capillary chamber. Capillary material in the capillary chamber is arranged so that it has a higher density adjacent the outlet port than away from the outlet port, to enhance the flow of the fluid toward the outlet port. The interior of the capillary chamber is structured to provide greater compression to the capillary material around the outlet port, and provide stability to retain the variable compression of the capillary material.
    Type: Application
    Filed: March 15, 2002
    Publication date: December 12, 2002
    Applicant: Xerox Corporation
    Inventors: Bryan J. Roof, Dennis M. Lengyel, Edward M. Carrese, David P. Breemes, Louis F. Lavallee, Sara Reynolds, Hiep H. Nguyen, Eric A. Merz, Christopher S. Mullin