Patents by Inventor James R. Larson
James R. Larson 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: 20110227973Abstract: A modular printing device has been developed that may be configured with different numbers of ink colors and ink types and with a different cross-process direction print resolution for each ink color and ink type.Type: ApplicationFiled: March 17, 2010Publication date: September 22, 2011Applicant: XEROX CORPORATIONInventors: James R. Larson, Jeffrey J. Folkins
-
Publication number: 20100313788Abstract: A solid or phase change inkjet ink incorporating a polar acidic wax is described. The use of polar waxes as an ink additive improves the polarity of the ink and adhesion of the ink to paper. A method for applying the solid or phase change ink incorporating an acidic polar wax additive to form an image is also described.Type: ApplicationFiled: June 10, 2009Publication date: December 16, 2010Applicant: XEROX CORPORATIONInventors: Stephan V. DRAPPEL, Peter G. ODELL, Marcel P. BRETON, Caroline M. TUREK, Paul J. MCCONVILLE, Mojgan RABBANI, Jennifer J. REA, James R. LARSON
-
Patent number: 7828423Abstract: A printing apparatus includes a printing station, including at least one printhead for applying phase-change ink to the substrate, and a backing member disposed on an opposite side of the substrate substantially opposite the printhead, the backing member causing the substrate to reach a predetermined ink-receiving temperature.Type: GrantFiled: July 5, 2007Date of Patent: November 9, 2010Assignee: Xerox CorporationInventors: James R Larson, Jeffrey J Folkins, Roger A Newell, Donald M Bott, Roger Leighton, Edward B Caruthers, Jr., David J Gervasi, David A Mantell, Vincent M Williams, Michael J Levy, James M Casella, Jeremy C Dejong, Paul J Mcconville
-
Patent number: 7798633Abstract: A process transfers an image from an intermediate imaging member onto a sheet of recording media while preserving the ability to duplex print on the sheet. The process includes generating an image on an intermediate imaging member as the intermediate imaging member rotates in a first direction, synchronizing a sheet of recording media with the image on the intermediate member as the intermediate imaging member continues to rotate in the first direction, transferring the image from the intermediate imaging member onto the sheet of recording media as the intermediate imaging member continues to rotate in the first direction, and limiting release agent on the intermediate imaging member to a level that preserves duplex printing capability on the sheet of recording media.Type: GrantFiled: November 14, 2005Date of Patent: September 21, 2010Assignee: Xerox CorporationInventors: Jeffrey J. Folkins, James R. Larson, Paul John McConville, Edward B. Caruthers, Jr., David J. Gervasi, Roger G. Leighton, Michael Jon Levy
-
Publication number: 20100091347Abstract: A method processes image data for a color separation to reduce visible perception of misalignment of printheads in a plurality of serially arranged printheads. The method includes detecting cross-process edges in image values for objects in a color separation to be printed by a plurality of serially arranged printheads, and disproportionately mapping image values corresponding to the object in the color separation to one of the printheads in the plurality of serially arranged printheads.Type: ApplicationFiled: October 14, 2008Publication date: April 15, 2010Applicant: XEROX CORPORATIONInventors: David Allen Mantell, Jeffrey J. Folkins, James R. Larson
-
Publication number: 20090009573Abstract: A printing apparatus includes a printing station, including at least one printhead for applying phase-change ink to the substrate, and a backing member disposed on an opposite side of the substrate substantially opposite the printhead, the backing member causing the substrate to reach a predetermined ink-receiving temperature.Type: ApplicationFiled: July 5, 2007Publication date: January 8, 2009Applicant: XEROX CORPORATIONInventors: James R. Larson, Jeffrey J. Folkins, Roger A. Newell, Donald M. Bott, Roger Leighton, Edward B. Caruthers, JR., David J. Gervasi, David A. Mantell, Vincent M. Williams, Michael J. Levy, James M. Casella, Jeremy C. DeJong, Paul J. McConville
-
Patent number: 7014897Abstract: A liquid ink imaging member having a top outer imaging surface is provided for receiving image forming ink droplets from a printhead. The liquid ink imaging member includes (a) a substrate member; (b) at least one elastomeric layer formed over the substrate member and including the top outer imaging surface; and (c) a surface texture formed into the top outer imaging surface and comprising asperities spaced apart at most from about one-half to about one pixel spot size for providing contact angle hysteresis to pin image forming ink droplets received thereon, thereby preventing ink droplet drawback, and resulting in quality images.Type: GrantFiled: December 16, 2002Date of Patent: March 21, 2006Assignee: Xerox CorporationInventors: David H. Pan, James E. Williams, T. Edwin Freeman, Edward B. Caruthers, Jr., James R. Larson, Frank J. Bonsignore, Antonio DeCrescentis
-
Patent number: 6899419Abstract: A phase change ink image producing machine including (a) a control subsystem for controlling operation of all subsystems and components of the image producing machine; (b) melting apparatus for melting solid phase change ink into melted molten liquid ink; (c) a printhead system located for receiving said melted molten liquid ink, said printhead system being connected to said control subsystem for ejecting droplets of melted molten liquid ink onto an imaging member to form an image and a liquid ink imaging member having a top outer imaging surface for receiving image forming ink droplets from a printhead.Type: GrantFiled: June 8, 2004Date of Patent: May 31, 2005Assignee: Xerox CorporationInventors: David H. Pan, James E. Williams, T. Edwin Freeman, Edward B. Caruthers, Jr., James R. Larson, Frank J. Bonsignore, Antonio DeCrescentis
-
Publication number: 20040222353Abstract: A phase change ink image producing machine including (a) a control subsystem for controlling operation of all subsystems and components of the image producing machine; (b) melting apparatus for melting solid phase change ink into melted molten liquid ink; (c) a printhead system located for receiving said melted molten liquid ink, said printhead system being connected to said control subsystem for ejecting droplets of melted molten liquid ink onto an imaging member to form an image and a liquid ink imaging member having a top outer imaging surface for receiving image forming ink droplets from a printhead.Type: ApplicationFiled: June 8, 2004Publication date: November 11, 2004Applicant: Xerox CorporationInventors: David H. Pan, James E. Williams, T. Edwin Freeman, Edward B. Caruthers, James R. Larson, Frank J. Bonsignore, Antonio DeCrescentis
-
Patent number: 6785483Abstract: Methods and system incorporating job scheduling to extend the lifetime of an ink sump according to one or more replenishment models in which two replenishing sumps are used to maintain compositional stability in a working ink sump operable in a three subcomponent ink replenishment system. Determinations of failure modes of the toner sump are made and basic principles for replenishment are presented for implementation in a control system operable to enhance ink sump performance and to extend the ink sump lifetime.Type: GrantFiled: December 17, 2002Date of Patent: August 31, 2004Assignee: Xerox CorporationInventors: Chu-heng Liu, George A. Gibson, James R. Larson
-
Publication number: 20040114009Abstract: A liquid ink imaging member having a top outer imaging surface is provided for receiving image forming ink droplets from a printhead. The liquid ink imaging member includes (a) a substrate member; (b) at least one elastomeric layer formed over the substrate member and including the top outer imaging surface; and (c) a surface texture formed into the top outer imaging surface and comprising asperities spaced apart at most from about one-half to about one pixel spot size for providing contact angle hysteresis to pin image forming ink droplets received thereon, thereby preventing ink droplet drawback, and resulting in quality images.Type: ApplicationFiled: December 16, 2002Publication date: June 17, 2004Applicant: Xerox CorporationInventors: David H. Pan, James E. Williams, T. Edwin Freeman, Edward B. Caruthers, James R. Larson, Frank J. Bonsignore, Antonio DeCrescentis
-
Publication number: 20040114950Abstract: Methods and system incorporating job scheduling to extend the lifetime of an ink sump according to one or more replenishment models in which two replenishing sumps are used to maintain compositional stability in a working ink sump operable in a three subcomponent ink replenishment system. Determinations of failure modes of the toner sump are made and basic principles for replenishment are presented for implementation in a control system operable to enhance ink sump performance and to extend the ink sump lifetime.Type: ApplicationFiled: December 17, 2002Publication date: June 17, 2004Applicant: Xerox CorporationInventors: Chu-Heng Liu, George A. Gibson, James R. Larson
-
Patent number: 6575096Abstract: Computer controller mixing of customer-selected colorants, including inks, for printing machines includes an ink supply station with a color matching control computer program, an ink mixing station, cleaning and waste disposal stations, for automatically emptying and cleaning ink mixing station components, which are integrally connected to a print engine, and scheduling of colorant changes to maximize use of a particular colorant and minimize colorant changes.Type: GrantFiled: November 7, 2001Date of Patent: June 10, 2003Assignee: Xerox CorporationInventors: Edward Blair Caruthers, R. Enrique Viturro, Nancy Beth Goodman, George A. Gibson, James R. Larson
-
Publication number: 20030097947Abstract: Computer controller mixing of customer-selected colorants, including inks, for printing machines includes an ink supply station with a color matching control computer program, an ink mixing station, cleaning and waste disposal stations, for automatically emptying and cleaning ink mixing station components, which are integrally connected to a print engine, and scheduling of colorant changes to maximize use of a particular colorant and minimize colorant changes.Type: ApplicationFiled: November 7, 2001Publication date: May 29, 2003Applicant: XEROX CORPORATIONInventors: Edward Blair Caruthers, R. Enrique Viturro, Nancy Beth Goodman, George A. Gibson, James R. Larson
-
Patent number: 6261732Abstract: Disclosed is a process for forming images which comprises (a) generating an electrostatic latent image; (b) contacting the latent image with a developer comprising a colorant and a substantial amount of a vehicle with a melting point of at least about 25° C., said developer having a melting point of at least about 25° C., said contact occurring while the developer is maintained at a temperature at or above its melting point, said developer having a viscosity of no more than about 500 centipoise and a resistivity of no less than about 108 ohm-cm at the temperature maintained while the developer is in contact with the latent image; and (c) cooling the developed image to a temperature below its melting point subsequent to development. Specific processes disclosed include electrophoretic development processes, polarizable liquid development processes, and photoelectrophoretic development processes. Optionally, the developed image is transferred to a substrate subsequent to development.Type: GrantFiled: October 18, 1999Date of Patent: July 17, 2001Assignee: Xerox CorporationInventors: Ian D. Morrison, John F. Oliver, James R. Larson, Edward Anczurowski, Anthony M. Wallace
-
Patent number: 6099608Abstract: A filtration system that rotates in conjunction with a blower wheel, and a method of attaching the same. The blower wheel typically has a plurality of fan blades arranged in a spaced relationship radially around a blower cavity to define a flow path extending radially outward from the blower cavity through the fan blades when the blower wheel is rotating. The filtration system includes a filter cartridge releasably attachable to the blower wheel in an engaged configuration. The filter cartridge includes a filter medium defining a generally center opening and a filter surface configured to be positioned generally adjacent to the fan blades and to extend across at least a portion of the flow path. In one embodiment, a plurality of flow passages extending through the filter medium.Type: GrantFiled: July 30, 1998Date of Patent: August 8, 2000Assignee: 3M Innovative Properties CompanyInventors: Michael Harms, Yuan-Ming Tang, Ricardo Lira, James R. Larson
-
Patent number: 6047143Abstract: An image data adjustment system is described which adjusts image data to be printed based upon the level of contaminants detected in the toner reservoirs. The system detects the level of contamination of a toner to be printed and adjusts the image data so that a compensating toner is also printed with the desired toner so that an intended print color is achieved despite contaminants in the toner.Type: GrantFiled: January 19, 1999Date of Patent: April 4, 2000Assignee: Xerox CorporationInventors: James R. Larson, George A. Gibson, Edward B. Caruthers, Jr., Raymond W. Stover
-
Patent number: 5998081Abstract: Disclosed is a process for forming images which comprises (a) generating an electrostatic latent image; (b) contacting the latent image with a developer comprising a colorant and a substantial amount of a vehicle with a melting point of at least about 25.degree. C., said developer having a melting point of at least about 25.degree. C., said contact occurring while the developer is maintained at a temperature at or above its melting point, said developer having a viscosity of no more than about 500 centipoise and a resistivity of no less than about 10.sup.8 ohm-cm at the temperature maintained while the developer is in contact with the latent image; and (c) cooling the developed image to a temperature below its melting point subsequent to development. Specific processes disclosed include electrophoretic development processes, polarizable liquid development processes, and photoelectrophoretic development processes. Optionally, the developed image is transferred to a substrate subsequent to development.Type: GrantFiled: December 4, 1992Date of Patent: December 7, 1999Assignee: Xerox CorporationInventors: Ian D. Morrison, John F. Oliver, James R. Larson, Edward Anczurowski, Anthony M. Wallace
-
Patent number: 5923356Abstract: An apparatus for developing an electrostatic latent image in a liquid developing material-based electrostatographic printing machine including a control system for controlling an amount of marking particles, carrier liquid and/or charge director added to a supply of liquid developing material utilized for developing a latent electrostatic image such that the concentration of marking particles and or charge director can be maintained at an optimal value. The amount of marking particles, carrier liquid and/or charge director in a supply of liquid developing material is maintained at a predetermined optimal value in response to the amount of marking particles and/or charge director depleted from the supply of liquid developing material with each development cycle. A supply reservoir is maintained with a substantially constant amount of liquid carrier to which is added marking particles and/or charge director to provide an operative solution of liquid developing material.Type: GrantFiled: November 1, 1995Date of Patent: July 13, 1999Assignee: Xerox CorporationInventors: George A. Gibson, James R. Larson
-
Patent number: 5897239Abstract: A system and method for color mixing control in a developing material-based electrostatographic printing system. A developing reservoir containing an operative solution of customer selectable colored developing material is continuously replenished with selectively variable amounts of basic color components making up the operative solution by controlling the rate of replenishment of various color components added to the supply reservoir. An optical sensor is used to measure the optical spectrum of the developed image so that the actual optical spectrum thereof can be brought into agreement with a target optical spectrum associated with a customer selectable color. The present invention may be used to mix a customer selectable color in situ, whereby approximate amounts of primary color components are initially deposited and mixed in the developing material reservoir and the resultant developed image is monitored and adjusted until the mixture reaches a target optical spectrum.Type: GrantFiled: March 31, 1997Date of Patent: April 27, 1999Assignee: Xerox CorporationInventors: Edward B. Caruthers, Jr., James R. Larson