Patents by Inventor James M. Chappell

James M. Chappell 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: 20130328980
    Abstract: Disclosed herein are curable solid inks which are solid at room temperature and molten at an elevated temperature at which the molten ink is applied to a substrate. In particular, the curable solid inks of the present embodiments comprise low molecular weight amide gellants that impart self-leveling capabilities to the inks. Also disclosed herein are methods for making the amide gellant and the inks comprising the amide gellants.
    Type: Application
    Filed: June 11, 2012
    Publication date: December 12, 2013
    Applicant: XEROX CORPORATION
    Inventors: Naveen Chopra, Barkev Keoshkerian, Daryl W. Vanbesien, Jenny Eliyahu, Stephan V. Drappel, Jeffrey H. Banning, James M. Chappell, Fusheng Xu, Paul J. McConville
  • Patent number: 8376497
    Abstract: A printer includes a web transport that is configured to transport a web of media along a transport path through the printer. Printheads in the printer are associated with web detectors that detect the presence or absence of the web opposite the printheads. A controller in the printer is operatively connected to the web detectors to alter operation of the printer with reference to the presence or absence of the web opposite the printheads.
    Type: Grant
    Filed: December 27, 2010
    Date of Patent: February 19, 2013
    Assignee: Xerox Corporation
    Inventor: James M. Chappell
  • Publication number: 20120162299
    Abstract: A printer includes a web transport that is configured to transport a web of media along a transport path through the printer. Printheads in the printer are associated with web detectors that detect the presence or absence of the web opposite the printheads. A controller in the printer is operatively connected to the web detectors to alter operation of the printer with reference to the presence or absence of the web opposite the printheads.
    Type: Application
    Filed: December 27, 2010
    Publication date: June 28, 2012
    Applicant: XEROX CORPORATION
    Inventor: James M. Chappell
  • Publication number: 20080192105
    Abstract: A system for printing comprises a rotatable charge-retentive member; imaging means for creating an electrostatic latent image on the imaging surface; and development means for applying a development material to the electrostatic latent image on the imaging surface. The developed image has a raised portion, suitable for transferring a liquid-ink image related to the developed image to a receiving surface. The system can be fitted into a flexographic printing apparatus.
    Type: Application
    Filed: February 13, 2007
    Publication date: August 14, 2008
    Inventors: Neil R. Sembower, Dennis C. DeYoung, Jorge A. Alvarez, James M. Chappell
  • Patent number: 7406279
    Abstract: A development subsystem is used to develop toner particles transported by semiconductive carrier particles.
    Type: Grant
    Filed: October 31, 2005
    Date of Patent: July 29, 2008
    Assignee: Xerox Corporation
    Inventors: James M. Chappell, Patrick J. Howe, Michael D. Thompson
  • Publication number: 20080166646
    Abstract: An electrophotographic image forming apparatus comprising a photoreceptor, a conductive magnetic brush development system, and a housing in association with the conductive magnetic brush development system for a developer comprising a toner composition having emulsion/aggregation toner particles comprising a gel latex, a high Tg latex, a wax, and a colorant, wherein the wear rate of the photoreceptor is improved.
    Type: Application
    Filed: January 16, 2007
    Publication date: July 10, 2008
    Applicant: Xerox Corporation
    Inventors: Karen A. MOFFAT, Jorge A. ALVAREZ, William H. HOLLENBAUGH, James M. CHAPPELL, Gregory D. GERBASI
  • Patent number: 7366453
    Abstract: A development subsystem is used to develop developer having semiconductive carrier particles and toner particles. The development subsystem includes a developer housing, for retaining a quantity of developer having semiconductive carrier particles and toner particles, a first magnetic roll having a stationary core with at least one magnet and a sleeve that rotates about the stationary core of the first magnetic roll, a second magnetic roll having a stationary core with at least one magnet and a sleeve that rotates about the stationary core of the second magnetic roll, and a motor coupled to the first and the second magnetic rolls to drive the rotating sleeves of the first and the second magnetic rolls in a direction that is against the direction of a photoreceptor that rotates in proximity to the first and the second magnetic rolls. The first and the second magnetic rolls carry semiconductive carrier particles and toner particles through a development zone formed by the first and the second magnetic rolls.
    Type: Grant
    Filed: October 31, 2005
    Date of Patent: April 29, 2008
    Assignee: Xerox Corporation
    Inventors: Michael D. Thompson, James M. Chappell, Steven C. Hart, Patrick J. Howe, Ajay Kumar, Steven R. Leroy, Paul W. Morehouse, Palghat S. Ramesh, Fei Xiao
  • Publication number: 20070254230
    Abstract: A process for toner preparation includes forming toner particles by mixing an emuslion comprising at least binder resin and a colorant, aggregating the toner particles, and blending external additives with the toner particles in a blender to form a toner, wherein the blender has a blend intensity of from about 90.5 to about 100.5 W/lb, a specific blend energy of from about 20.3 to about 35.3 W-h/lb and a blender loading density of from about 0.25 to about 0.55 lb/L.
    Type: Application
    Filed: June 26, 2006
    Publication date: November 1, 2007
    Applicant: XEROX CORPORATION
    Inventors: Juan A. Morales-Tirado, Daniel A. Harrington, William H. Hollenbaugh, Vladislav Skorokhod, Wafa F. Bashir, Jackie B. Parker, Robert E. Grace, James M. Chappell, Karen A. Moffat, Richard P.N. Veregin, Cuong Vong
  • Patent number: 7123850
    Abstract: The exemplary embodiments are directed to a control system and method of predicting how a machine will respond to occasional or periodic maintenance or service, and adjusting the machine accordingly to account for the change in machine behavior due to the maintenance or service action. More specifically, in a machine under closed-loop control subject to occasional maintenance or service, the maintenance or service results in transient in machine performance. To mitigate transients in machine performance due to maintenance or service, a prediction of the maintenance or service effect is fed forward the existing control system just prior to the occurrence of maintenance or service in order to compensate for the maintenance or service effect. This prediction is continually updated and refined using subsequent measurements of the effect of maintenance or service on machine performance.
    Type: Grant
    Filed: June 30, 2005
    Date of Patent: October 17, 2006
    Assignee: Xerox Corporation
    Inventors: Eric S. Hamby, Yongsoon Eun, Eric M. Gross, Lawrence Floyd, Jack Lestrange, James M. Chappell, Joseph C. Sheflin
  • Patent number: 6522859
    Abstract: An air suction manifold device for removal of fibers/debris from the photoreceptor surface, which may otherwise attach to the development electrode wires causing a print defect(s). The device incorporating a secondary channel perpendicular to the main channel, formed by the manifold flange(s) proximity to the photoreceptor surface. The secondary channel supplying a specific volume of air at a specific mean velocity in a direction perpendicular to the flow direction of the main channel. The volume and velocity of secondary channel air being of such magnitude that it crosses the main channel gap and impinges on the photoreceptor surface, causing a zone of maximum shear stress prior to completely mixing with the main channel air. The maximum sheer stress zone resulting in improved fiber/debris removal performance from the photoreceptor surface.
    Type: Grant
    Filed: October 16, 2001
    Date of Patent: February 18, 2003
    Assignee: Xerox Corporation
    Inventor: James M. Chappell
  • Patent number: 6424810
    Abstract: A method and apparatus for cleaning a ductwork network system is disclosed. An image forming system is provided having a ductwork network cleaning system for passing a fluid and particulate matter therethrough. There is included at least one fluid regulating element, which is coupled to the ductwork network and to a subsystem of the image forming system. The fluid regulating element regulates fluid flow through the ductwork network. Also provided is a fluid displacement device, which is in fluid communication with the ductwork network. The fluid displacement device displaces fluid within the ductwork network. Most commonly, the fluid contained within the image forming system is air.
    Type: Grant
    Filed: November 30, 2000
    Date of Patent: July 23, 2002
    Assignee: Xerox Corporation
    Inventor: James M. Chappell
  • Patent number: 6181896
    Abstract: An electrophotographic printing machine of the type in which an electrostatic latent image recorded on a charge retentive surface is developed with toner particles to form a visible image thereof. A Hybrid Scavengeless Development (HSD) developer housing designed to control toner emission by employing two internal capture[JMC16], external exhaust manifolds. The location of the two manifolds are placed above and below the upper and lower donor rolls respectively. The manifolds are mounted in position to improve emissions control as well as reductions in the flow needed to accomplish the task. The upper and lower manifolds are able to control the loose toner emitted by the housing and lower powder cloud, they cannot collect the toner released by the upper powder cloud. To prevent toner accumulation in the middle regions of the wire module, a manifold is incorporated as an integral part of the wire module frame.
    Type: Grant
    Filed: May 19, 1999
    Date of Patent: January 30, 2001
    Assignee: Xerox Corporation
    Inventors: Francisco Zirilli, James M. Chappell, William N. Vogt
  • Patent number: 6067428
    Abstract: An electrophotographic printing machine of the type in which an electrostatic latent image recorded on a charge retentive surface is developed with toner particles to form a visible image thereof. A Hybrid Scavengeless Development (HSD) developer housing designed to control toner emission by employing two internal capture[JMC16], external exhaust manifolds. The location of the two manifolds are placed above and below the upper and lower donor rolls respectively. The manifolds are mounted in a position to improve emissions control as well as reductions in the flow needed to accomplish the task The upper and lower manifolds are able to control the loose toner emitted by the housing and lower powder cloud, they cannot collect the toner released by the upper powder cloud. To prevent toner accumulation in the middle regions of the wire module, a manifold is incorporated as an integral part of the wire module frame.
    Type: Grant
    Filed: May 19, 1999
    Date of Patent: May 23, 2000
    Assignee: Xerox Corporation
    Inventors: Francisco Zirilli, James M. Chappell, William N. Vogt