Patents by Inventor Christopher Douglas Atwood

Christopher Douglas Atwood 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: 11508058
    Abstract: A system and method evaluate defects in printed images. A target image, which has been captured of a printed image, is processed to identify defects, where present, which do not occur in a source image from which the printed image was generated. A trained classification model predicts a defect class for respective regions of the target image, each of the defect classes being drawn from a predefined set of defect classes. For at least one of the identified defects, a measure of severity of the defect is determined, such as a size of the defect. A decision on the acceptability of the printed image is made, based on the measure of severity of the at least one defect and the predicted defect class of a respective one of the regions in which the defect occurs.
    Type: Grant
    Filed: March 23, 2021
    Date of Patent: November 22, 2022
    Assignee: XEROX CORPORATION
    Inventors: Christopher Douglas Atwood, Joseph Fredrick Casey, Frank Tamarez Gomez, Joseph M. Ferrara, Jr., Jacob R. McCarthy
  • Patent number: 11499873
    Abstract: A method for determining a temperature of an object includes contacting the object with a first electrical conductor. A difference in electronegativity between the object and the first electrical conductor is greater than a predetermined value. The method also includes contacting the object or a substrate on which the object is positioned with a second electrical conductor. A difference in electronegativity between the object or the substrate and the second electrical conductor is less than the predetermined value. The method also includes connecting the first and second electrical conductors together. The method also includes measuring the temperature of the object using the first and second electrical conductors. The first and second electrical conductors form at least a portion of a thermocouple.
    Type: Grant
    Filed: June 17, 2020
    Date of Patent: November 15, 2022
    Assignee: XEROX CORPORATION
    Inventors: Christopher Douglas Atwood, Erwin Ruiz, David M. Kerxhalli, Douglas K. Herrmann, Linn C. Hoover, Derek A. Bryl, Ali R. Dergham
  • Patent number: 11478991
    Abstract: A system for determining a temperature of an object includes a three-dimensional (3D) printer configured to successively deposit a first layer of material, a second layer of material, and a third layer of material to form the object. The 3D printer is configured to form a recess in the second layer of material. The material is a metal. The system also includes a temperature sensor configured to be positioned at least partially with the recess and to have the third layer deposited thereon. The temperature sensor is configured to measure a temperature of the first layer of material, the second layer of material, the third layer of material, or a combination thereof.
    Type: Grant
    Filed: June 17, 2020
    Date of Patent: October 25, 2022
    Assignee: XEROX CORPORATION
    Inventors: Christopher Douglas Atwood, Erwin Ruiz, David M. Kerxhalli, Douglas K. Herrmann, Linn C. Hoover, Derek A. Bryl, Ali R. Dergham
  • Publication number: 20220308516
    Abstract: A sheet processing system for automated sheet adjustment includes a sensor system which captures at least a first image of a sheet of print media as the sheet is conveyed on a main transport path between a print media supply module and a marking device of an image rendering module. A control module computes a lateral error for the sheet, based on the captured at least first image, and computes an adjustment based on the computed lateral error. A sheet transport path adjustment mechanism translates a first portion of the main transport path relative to a second portion of the main transport path, based on the computed adjustment.
    Type: Application
    Filed: March 23, 2021
    Publication date: September 29, 2022
    Applicant: Xerox Corporation
    Inventors: Jacob R. McCarthy, Joseph M. Ferrara, JR., Joseph Fredrick Casey, Christopher Douglas Atwood, Frank B. Tamarez Gomez
  • Publication number: 20220309634
    Abstract: A system and method evaluate defects in printed images. A target image, which has been captured of a printed image, is processed to identify defects, where present, which do not occur in a source image from which the printed image was generated. A trained classification model predicts a defect class for respective regions of the target image, each of the defect classes being drawn from a predefined set of defect classes. For at least one of the identified defects, a measure of severity of the defect is determined, such as a size of the defect. A decision on the acceptability of the printed image is made, based on the measure of severity of the at least one defect and the predicted defect class of a respective one of the regions in which the defect occurs.
    Type: Application
    Filed: March 23, 2021
    Publication date: September 29, 2022
    Applicant: Xerox Corporation
    Inventors: Christopher Douglas Atwood, Joseph Fredrick Casey, Frank Tamarez Gomez, Joseph M. Ferrara, JR., Jacob R. McCarthy
  • Patent number: 11397549
    Abstract: An image processing system and method provide for receiving a current print job comprising a set of digital page images to be printed on print media sheets, identifying, for each page image, a set of input parameters, the set of input parameters including one or more of a print media sheet weight, a print media sheet size, a print media sheet thickness, a print media sheet porosity, a print media sheet coating, a print media sheet color, and an area coverage. The method further includes generating an adjustment for each page image, based on the set of input parameters and based on stored magnification errors generated for prior printed pages of print jobs, the adjustment being predicted to reduce at least one magnification error when the page image of the current print job is rendered on print media to form a printed image.
    Type: Grant
    Filed: March 23, 2021
    Date of Patent: July 26, 2022
    Assignee: Xerox Corporation
    Inventors: Frank B. Tamarez Gomez, Christopher Douglas Atwood, Jacob R. McCarthy, Joseph Fredrick Casey, Joseph M. Ferrara, Jr.
  • Publication number: 20220205845
    Abstract: An apparatus includes one or more layers of material printed by a three-dimensional (3D) printer. The one or more layers cool and solidify to form an object after being printed by the 3D printer. At least one of the one or more layers includes greater than 50% metal. The apparatus also includes a first temperature sensor in contact with the object. The first temperature sensor measures the temperature of the material while the object is being printed by the 3D printer, after the object has been printed by the 3D printer, or both.
    Type: Application
    Filed: March 17, 2022
    Publication date: June 30, 2022
    Applicant: XEROX CORPORATION
    Inventors: Christopher Douglas Atwood, Erwin Ruiz, David M. Kerxhalli, Douglas K. Herrmann, Linn C. Hoover, Derek A. Bryl, Ali R. Dergham
  • Patent number: 11307099
    Abstract: An object printed by a three-dimensional (3D) printer includes a plurality of layers of material printed by the 3D printer. The layers of material bond together to form the object as the layers of material cool and solidify after being printed by the 3D printer. The object also includes a temperature sensor placed in contact with one or more of the layers when the layers of material are being printed by the 3D printer. The temperature sensor remains in contact with the object after the layers of material cool and solidify to form the object. The temperature sensor is configured to measure a temperature of the object after the layers of material cool and solidify to form the object.
    Type: Grant
    Filed: June 17, 2020
    Date of Patent: April 19, 2022
    Assignee: XEROX CORPORATION
    Inventors: Christopher Douglas Atwood, Erwin Ruiz, David M. Kerxhalli, Douglas K. Herrmann, Linn C. Hoover, Derek A. Bryl, Ali R. Dergham
  • Publication number: 20210396593
    Abstract: An object printed by a three-dimensional (3D) printer includes a plurality of layers of material printed by the 3D printer. The layers of material bond together to form the object as the layers of material cool and solidify after being printed by the 3D printer. The object also includes a temperature sensor placed in contact with one or more of the layers when the layers of material are being printed by the 3D printer. The temperature sensor remains in contact with the object after the layers of material cool and solidify to form the object. The temperature sensor is configured to measure a temperature of the object after the layers of material cool and solidify to form the object.
    Type: Application
    Filed: June 17, 2020
    Publication date: December 23, 2021
    Applicant: XEROX CORPORATION
    Inventors: Christopher Douglas Atwood, Erwin Ruiz, David M. Kerxhalli, Douglas K. Herrmann, Linn C. Hoover, Derek A. Bryl, Ali R. Dergham
  • Publication number: 20210394448
    Abstract: A system for determining a temperature of an object includes a three-dimensional (3D) printer configured to successively deposit a first layer of material, a second layer of material, and a third layer of material to form the object. The 3D printer is configured to form a recess in the second layer of material. The material is a metal. The system also includes a temperature sensor configured to be positioned at least partially with the recess and to have the third layer deposited thereon. The temperature sensor is configured to measure a temperature of the first layer of material, the second layer of material, the third layer of material, or a combination thereof.
    Type: Application
    Filed: June 17, 2020
    Publication date: December 23, 2021
    Applicant: XEROX CORPORATION
    Inventors: Christopher Douglas Atwood, Erwin Ruiz, David M. Kerxhalli, Douglas K. Herrmann, Linn C. Hoover, Derek A. Bryl, Ali R. Dergham
  • Publication number: 20210396591
    Abstract: A method for determining a temperature of an object includes contacting the object with a first electrical conductor. A difference in electronegativity between the object and the first electrical conductor is greater than a predetermined value. The method also includes contacting the object or a substrate on which the object is positioned with a second electrical conductor. A difference in electronegativity between the object or the substrate and the second electrical conductor is less than the predetermined value. The method also includes connecting the first and second electrical conductors together. The method also includes measuring the temperature of the object using the first and second electrical conductors. The first and second electrical conductors form at least a portion of a thermocouple.
    Type: Application
    Filed: June 17, 2020
    Publication date: December 23, 2021
    Applicant: XEROX CORPORATION
    Inventors: Christopher Douglas Atwood, Erwin Ruiz, David M. Kerxhalli, Douglas K. Herrmann, Linn C. Hoover, Derek A. Bryl, Ali R. Dergham
  • Publication number: 20210237343
    Abstract: A method of printing on fabric includes: (a) loading a thermoplastic material into a nozzle of an extruder, such as an extruder of a three dimensional (3D) printer; (b) positioning a substrate that includes fabric in a print area proximate to the nozzle; (c) heating the thermoplastic material in the nozzle to a temperature that is equal to or greater than a melting point temperature of the fabric; and (d) extruding the heated thermoplastic material from the nozzle as a filament onto the fabric to yield a printed pattern on the fabric.
    Type: Application
    Filed: January 30, 2020
    Publication date: August 5, 2021
    Inventors: Joseph Michael Ferrara, Christopher Douglas Atwood
  • Patent number: 10569981
    Abstract: A media handling assembly contains a transport path for driving a document sheet downstream in a process direction. A first side edge extends lengthwise along the process direction. A registration guide edge extends lengthwise along the process direction and is situated opposite the first side edge. The media handling assembly includes at least one nozzle that is arranged proximate the first side edge. The at least one nozzle selectively discharges an airstream transverse the process direction towards the registration guide edge. The airstream drives the sheet against the registration edge guide for side registering and deskewing of the sheet.
    Type: Grant
    Filed: March 29, 2018
    Date of Patent: February 25, 2020
    Assignee: Xerox Corporation
    Inventors: Paul F. Sawicki, John R. Uchal, James E. Williams, Robert W. Phelps, Christopher Douglas Atwood
  • Patent number: 10493783
    Abstract: An image forming apparatus includes a collection system for collecting vapor co-solvents that are a byproduct of liquid ink. In addition, the collection system collects dew condensation from the moist air that is generated by lamps that dry the ink on a substrate. The collection system can be located in an exhaust passage. A condenser is installed in parallel and in front of an exhaust fan in the exhaust passage. The exhaust fan directs a flow of air through the exhaust passage. The collection system also includes a removable waste bottle for collecting the dew condensation and the condensed co-solvents. The exhaust passage bifurcates into an exhaust duct that is located after the exhaust fan and which discharges dry air and a collection channel that is located in front of the exhaust fan and which carries liquid drip off to the removable waste bottle.
    Type: Grant
    Filed: March 28, 2018
    Date of Patent: December 3, 2019
    Assignee: XEROX CORPORATION
    Inventors: Paul F. Sawicki, John R. Uchal, James E. Williams, Robert W. Phelps, Christopher Douglas Atwood
  • Publication number: 20190300315
    Abstract: A media handling assembly contains a transport path for driving a document sheet downstream in a process direction. A first side edge extends lengthwise along the process direction. A registration guide edge extends lengthwise along the process direction and is situated opposite the first side edge. The media handling assembly includes at least one nozzle that is arranged proximate the first side edge. The at least one nozzle selectively discharges an airstream transverse the process direction towards the registration guide edge. The airstream drives the sheet against the registration edge guide for side registering and deskewing of the sheet.
    Type: Application
    Filed: March 29, 2018
    Publication date: October 3, 2019
    Applicant: Xerox Corporation
    Inventors: Paul F. Sawicki, John R. Uchal, James E. Williams, Robert W. Phelps, Christopher Douglas Atwood
  • Publication number: 20190299686
    Abstract: An image forming apparatus includes a collection system for collecting vapor co-solvents that are a byproduct of liquid ink. In addition, the collection system collects dew condensation from the moist air that is generated by lamps that dry the ink on a substrate. The collection system can be located in an exhaust passage. A condenser is installed in parallel and in front of an exhaust fan in the exhaust passage. The exhaust fan directs a flow of air through the exhaust passage. The collection system also includes a removable waste bottle for collecting the dew condensation and the condensed co-solvents. The exhaust passage bifurcates into an exhaust duct that is located after the exhaust fan and which discharges dry air and a collection channel that is located in front of the exhaust fan and which carries liquid drip off to the removable waste bottle.
    Type: Application
    Filed: March 28, 2018
    Publication date: October 3, 2019
    Applicant: Xerox Corporation
    Inventors: Paul F. Sawicki, John R. Uchal, James E. Williams, Robert W. Phelps, Christopher Douglas Atwood
  • Patent number: 10370212
    Abstract: A registration system includes nip rollers for conveying a sheet in a process direction when the nip rollers are in an engaged position, and first and second sets of omnidirectional rollers arranged perpendicularly to each other, for conveying the sheet in the process and cross-process directions, respectively. The omnidirectional rollers each allow the sheet to slide, relative to the omnidirectional roller, in a direction parallel to an axis of rotation of the omnidirectional roller. The nip-rollers are movable from the engaged position to a disengaged position, in which the first pair of omnidirectional rollers convey the sheet in the process direction. A feedback system includes sensors for determining registration errors of the sheet and a control system controls the omnidirectional rollers to reduce the registration errors in the sheet while the nip-rollers are in the disengaged position.
    Type: Grant
    Filed: May 10, 2018
    Date of Patent: August 6, 2019
    Assignee: Xerox Corporation
    Inventors: Christopher Douglas Atwood, Robert W. Phelps, Paul F. Sawicki, John R. Uchal, James Edward Williams
  • Patent number: 10245844
    Abstract: What is disclosed is an object holder for securely retaining a 3-dimensional object while it is being printed in a direct-to-object print system and a direct-to-object print system configured to use various embodiments of the object holder of the present invention. In one embodiment, the object holder comprises a frame configured to slideably traverse a support member positioned parallel to a plane formed by at least one printhead configured to eject marking material on to a surface of an object. A flexible belt is positioned around an inside of the frame to form a circle. One end of the belt is fixed to the frame. An opposite end of the belt passes through an opening in a side of the frame. Pulling the belt through the opening tightens the belt encircled around the object in the frame. A lock prevents the belt from loosening after it has been pulled tight.
    Type: Grant
    Filed: April 3, 2017
    Date of Patent: April 2, 2019
    Assignee: Xerox Corporation
    Inventors: Annie Liu, Christopher Douglas Atwood, Kelly Burton, Elizabeth M. Crossen
  • Patent number: 10165689
    Abstract: A process for thermoforming a circuit onto a three-dimensional part comprises applying electrically conductive lines on a substrate to form a flexible circuit. The flexible circuit is heated to a temperature sufficient to thermoform the substrate into a shape that conforms to said three-dimensional part and attached to the three-dimensional part.
    Type: Grant
    Filed: August 30, 2017
    Date of Patent: December 25, 2018
    Assignee: XEROX CORPORATION
    Inventors: Christopher Douglas Atwood, Elizabeth Crossen, Mark A. Adiletta, Jeffrey J. Bradway, Paul J. McConville
  • Patent number: 10154158
    Abstract: What is disclosed is system which facilitates the application of a mark to a surface of an object in a direct-to-object print system and a direct-to-object print system configured to use various embodiments of the present marking system. The present marking system comprises a camera for capturing an image of an object retained by an object holder configured to slideably traverse a support member positioned to be parallel to a plane formed by at least one printhead configured to eject in onto a surface of the object. A processor receives an image of an object held and communicates the image to a display. A mark to be printed on the object is retrieved and overlaid on the object in the image. A location of the overlaid mark is determined and communicated to a controller which causes the printhead to print the mark on the object at the location.
    Type: Grant
    Filed: April 3, 2017
    Date of Patent: December 11, 2018
    Assignee: Xerox Corporation
    Inventors: Paul J. McConville, Jason M. Lefevre, Chu-Heng Liu, Douglas K. Herrmann, Kelly Burton, Christopher Douglas Atwood, Elizabeth M. Crossen, Annie Liu