Patents by Inventor Derek A. Bryl

Derek A. Bryl 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: 20210283853
    Abstract: A method operates a three-dimensional (3D) metal object manufacturing system to maintain a temperature of an uppermost layer of a 3D metal object being formed within a temperature range conducive for bonding between the uppermost layer and a next layer to be formed. A controller of the system compares a temperature of the uppermost layer with at least a low end temperature of the temperature range and operates an electrical resistance switching network using 3D model data to provide electrical power selectively to heating elements in a modular heater to heat the 3D metal object being formed when the temperature indicated by the signal from the sensor is less than the predetermined temperature.
    Type: Application
    Filed: March 12, 2020
    Publication date: September 16, 2021
    Inventors: Ali R. Dergham, Douglas K. Herrmann, Christopher D. Atwood, Erwin Ruiz, Derek A. Bryl, Linn C. Hoover
  • Publication number: 20210276082
    Abstract: A three-dimensional printing system includes a build platform comprising a build surface. The printing system also includes an enclosure system having a side portion extending entirely around the build surface, a top plate portion that abuts the side portion, and a bottom portion. The side portion, the top plate portion and the bottom portion form an enclosed space surrounding the build surface. The top plate portion is moveable so as to adjust a volume of the enclosed space. A 3D printer printhead is disposed adjacent to the enclosure system for depositing a print material onto the build surface. The printing system also includes a heating system for heating the enclosed space.
    Type: Application
    Filed: March 3, 2020
    Publication date: September 9, 2021
    Applicant: XEROX CORPORATION
    Inventors: Douglas K. Herrmann, Erwin Ruiz, Ali R. Dergham, Christopher D. Atwood, Daniel R. Knopp, Derek A. Bryl, Linn C. Hoover
  • Publication number: 20210276081
    Abstract: A three-dimensional printing system, the system comprising a build platform and a printhead for depositing a conductive print material at deposition contact points of a build surface on the build platform. A heating system comprises at least one induction coil for preheating the deposition contact points of the build surface.
    Type: Application
    Filed: March 3, 2020
    Publication date: September 9, 2021
    Applicant: XEROX CORPORATION
    Inventors: Christopher D. Atwood, Erwin Ruiz, Douglas K. Herrmann, Ali R. Dergham, Derek A. Bryl
  • Publication number: 20210163243
    Abstract: A sheet stacking apparatus includes a frame, a round member directly or indirectly connected to the frame, and an arm directly or indirectly connected to the frame. The arm is rotatable to rotate between a first position and a second position. The arm is positioned to bias sheets toward the round member when in the first position, and the arm is positioned to bias the sheets away from the round member when in the second position.
    Type: Application
    Filed: December 3, 2019
    Publication date: June 3, 2021
    Applicant: Xerox Corporation
    Inventors: Erwin Ruiz, Bruce A. Thompson, Derek A. Bryl, Arthur H. Kahn, Paul F. Brown, II
  • Patent number: 9944094
    Abstract: A media transport system includes a drum with a plurality of rows of holes, a vacuum plenum, and a shutter. The vacuum plenum is positioned within the drum at a position opposite a printhead and the shutter is configured for movement in a cross-process direction. Each row of holes in the drum includes at least one inter-copy gap. The shutter includes a solid member having at least one aperture in it. The shutter is moved to a position so the aperture is aligned with a row of holes and the solid portion of the shutter prevents a flow of air through the vacuum plenum from the holes in other rows of holes not aligned with the aperture in the shutter and the inter-copy gaps in the row of holes aligned with the aperture selectively prevents air flow to the vacuum plenum.
    Type: Grant
    Filed: April 7, 2017
    Date of Patent: April 17, 2018
    Assignee: Xerox Corporation
    Inventors: Douglas K. Herrmann, Jason M. LeFevre, Derek A. Bryl
  • Patent number: 9855775
    Abstract: A printhead protection apparatus moves between printheads in a printer between a position where cross-members in a frame block media irregularities from striking the faces of the printheads and a position where the cross-members are retracted between adjacent printheads to enable the faces of the printheads to be wiped. The frame of the apparatus encompasses the printheads and the cross-members connected to the frame move between adjacent printheads.
    Type: Grant
    Filed: December 12, 2016
    Date of Patent: January 2, 2018
    Assignee: Xerox Corporation
    Inventors: Douglas K. Herrmann, Jason M. LeFevre, Derek A. Bryl
  • Patent number: 9815303
    Abstract: A media transport system includes a belt with a plurality of rows of holes, a vacuum plenum, and a shutter. The belt is positioned over the vacuum plenum carries a plurality of media over the vacuum plenum. A row of holes in the belt includes inter-copy gaps that separate media on the belt and the inter-copy gaps include no holes in the belt. The shutter includes a solid member that prevents a flow of air between the vacuum plenum and a portion of the belt positioned above the first shutter and a first aperture formed through the solid member that is aligned with the row of holes in the belt.
    Type: Grant
    Filed: July 6, 2016
    Date of Patent: November 14, 2017
    Assignee: Xerox Corporation
    Inventors: Douglas K. Herrmann, Jason M. Lefevre, Derek A. Bryl
  • Patent number: 9796546
    Abstract: A vacuum belt moves between a print head and a manifold. The manifold has manifold chambers, and each of the manifold chambers has manifold openings. Vacuum lines are connected to the manifold chambers. The vacuum lines exert vacuum force upon the manifold chambers, and the manifold openings exert the vacuum force through belt perforations. A cylindrical valve structure is connected to the vacuum lines. The cylindrical valve structure includes a cylindrical sleeve (having sleeve openings connected to the vacuum lines) and an internal valve cylinder positioned within the cylindrical sleeve. The internal valve cylinder has groups of vacuum slots. The internal valve cylinder moves linearly within the cylindrical sleeve (in directions parallel to cylindrical walls of the cylindrical sleeve) to align only one of the groups of vacuum slots with the sleeve openings at a time, so as to control which of the manifold chambers receive the vacuum draw.
    Type: Grant
    Filed: July 1, 2016
    Date of Patent: October 24, 2017
    Assignee: Xerox Corporation
    Inventors: Jason M. LeFevre, Douglas K. Herrmann, Derek A. Bryl
  • Patent number: 9604813
    Abstract: A sheet transport apparatus includes a first belt having a first pattern of first vacuum holes, and a second belt having a second pattern of second vacuum holes. The first belt is positioned on and contacts the second belt. The first belt contacts sheets to be transported. When transporting the sheets on the first belt separated by spaces between the sheets, the first pulleys and second pulleys rotate together and the first belt and the second belt move together. When not transporting the sheets, a controller controls pulleys to move the first belt relative to the second belt so as to leave blocked-hole regions of the first belt where the spaces between the sheets are located. The blocked-hole regions are locations of the first belt where the first vacuum holes are unaligned with the second vacuum holes and the first vacuum holes are blocked by the second belt.
    Type: Grant
    Filed: March 15, 2016
    Date of Patent: March 28, 2017
    Assignee: Xerox Corporation
    Inventors: Douglas K. Herrmann, Jason M. LeFevre, Derek A. Bryl
  • Patent number: 9561671
    Abstract: A media transport system provides full vacuum under media as the media traverses an entire print path of an ink jet printer while simultaneously providing for a no-vacuum inter-copy gap that moves along with the media past print heads of the ink jet printer. This is accomplished with a dual vacuum inner/outer vacuum drum system that includes a first drum that has a matrix of holes that allows for full coverage of vacuum with a second underlying drum that is shifted to align a second set of holes to match the sheet pitch. By shifting the second drum in relation to the first drum, a combination set of holes is aligned to provide full vacuum across the media while a column of holes is blocked to provide a non-vacuum inter-copy gap.
    Type: Grant
    Filed: June 13, 2016
    Date of Patent: February 7, 2017
    Assignee: Xerox Corporation
    Inventors: Douglas K Herrmann, Jason M Lefevre, Derek A Bryl, Linn C Hoover
  • Patent number: 9440434
    Abstract: A printer attenuates banding visual defects arising from a lack of flatness in media as ink is ejected onto the media. The printer includes a detector that generates a signal corresponding to the slope in the media and a controller that modulates a volume of the ink drops ejected by one or more printheads in the vicinity of the slope in the media.
    Type: Grant
    Filed: September 26, 2014
    Date of Patent: September 13, 2016
    Assignee: Xerox Corporation
    Inventors: Douglas K. Herrmann, Jason M. LeFevre, Derek A. Bryl
  • Patent number: 9428360
    Abstract: A system and method are provided for implementing an automated process that independently manipulates a plurality of span-wise discrete individual pressure actuators in a movable pressure assembly associated with a nip-based drive unit to drive tensioned web continuous feed image receiving media in web-based printing devices. The disclosed process varyingly adjusts a relative pressure of between the opposing rolls to address a detected wrinkling condition. A closed loop detection and control scheme is provided in which, based on a determination that wrinkling is occurring in tensioned web continuous feed image receiving media, and isolation of a spanwise location in which the wrinkling is occurring, differential signals may be sent to one or more of a plurality of span-wise discrete individual pressure actuators in a movable pressure assembly to varyingly adjust a relative pressure of the two opposing rolls across a spanwise pressure nip.
    Type: Grant
    Filed: February 21, 2014
    Date of Patent: August 30, 2016
    Assignee: Xerox Corporation
    Inventors: Douglas K. Herrmann, Jason M. LeFevre, Derek A. Bryl
  • Patent number: 9417597
    Abstract: A scissor lift apparatus includes a sliding carriage member and a pivoting linkage added to a conventional scissor lift in order to lower the force required to lift a tray holding heavy media during the initial portion of the lifting action where the scissor lift is fully compressed.
    Type: Grant
    Filed: December 17, 2015
    Date of Patent: August 16, 2016
    Assignee: Xerox Corporation
    Inventors: Derek A Bryl, Aaron M Moore, Douglas K Herrmann
  • Patent number: 9409396
    Abstract: A method for printing includes the use of a protective guide system that protects a print head nozzle plate from physical contact with objects such as a curled print medium. The print head nozzle plate includes a nozzle array including a plurality of nozzles arranged in a plurality of subarrays. The plurality of subarrays are spaced from each other by a plurality of intranozzle areas devoid of nozzles. The protective guide system includes a frame and a plurality of cross members aligned with the intranozzle areas between the subarrays. The protective guide system thus protects the print head nozzle plate without obstructing the ink during printing.
    Type: Grant
    Filed: October 26, 2015
    Date of Patent: August 9, 2016
    Assignee: XEROX CORPORATION
    Inventors: Douglas K. Herrmann, Jason M. LeFevre, Derek A. Bryl
  • Publication number: 20160103415
    Abstract: A scissor lift apparatus includes a sliding carriage member and a pivoting linkage added to a conventional scissor lift in order to lower the force required to lift a tray holding heavy media during the initial portion of the lifting action where the scissor lift is fully compressed.
    Type: Application
    Filed: December 17, 2015
    Publication date: April 14, 2016
    Inventors: DEREK A. BRYL, AARON M. MOORE, DOUGLAS K. HERRMANN
  • Publication number: 20160089880
    Abstract: A printer attenuates banding visual defects arising from a lack of flatness in media as ink is ejected onto the media. The printer includes a detector that generates a signal corresponding to the slope in the media and a controller that modulates a volume of the ink drops ejected by one or more printheads in the vicinity of the slope in the media.
    Type: Application
    Filed: September 26, 2014
    Publication date: March 31, 2016
    Inventors: Douglas K. Herrmann, Jason M. LeFevre, Derek A. Bryl
  • Publication number: 20160089884
    Abstract: A method for printing includes the use of a protective guide system that protects a print head nozzle plate from physical contact with objects such as a curled print medium. The print head nozzle plate includes a nozzle array including a plurality of nozzles arranged in a plurality of subarrays. The plurality of subarrays are spaced from each other by a plurality of intranozzle areas devoid of nozzles. The protective guide system includes a frame and a plurality of cross members aligned with the intranozzle areas between the subarrays. The protective guide system thus protects the print head nozzle plate without obstructing the ink during printing.
    Type: Application
    Filed: October 26, 2015
    Publication date: March 31, 2016
    Inventors: Douglas K. Herrmann, Jason M. LeFevre, Derek A. Bryl
  • Patent number: 9278531
    Abstract: A print head protection device is used with an inkjet printer having a print head adapted for elevating. A roller is mounted upstream of the print heads and above the process path a predetermined distance. A cover on the roller outer surface contacts the sheet lead edge if sheet curl exceeds a set curl range. The cover will cause rotation of the roller by engaging the sheet. A rotary encoder is mounted for synchronous rotation with the roller. The rotary encoder generates a signal in response to rotation of the roller, raising the print head to preclude damage. Alternately, the sheet can be discarded.
    Type: Grant
    Filed: November 12, 2014
    Date of Patent: March 8, 2016
    Assignee: XEROX CORPORATION
    Inventors: Jason M. LeFevre, Douglas K. Herrmann, Derek A. Bryl
  • Patent number: 9199466
    Abstract: A protective guide system that protects a print head nozzle plate from physical contact with objects such as a curled print medium. The nozzle plate includes a nozzle array including a plurality of nozzles arranged in a plurality of subarrays. The plurality of subarrays are spaced from each other by a plurality of intranozzle areas devoid of nozzles. The protective guide system includes a frame and a plurality of cross members aligned with the intranozzle areas between the subarrays. The protective guide system thus protects the nozzle plate without obstructing the ink during printing.
    Type: Grant
    Filed: September 29, 2014
    Date of Patent: December 1, 2015
    Assignee: XEROX CORPORATION
    Inventors: Douglas K. Herrmann, Jason M. LeFevre, Derek A. Bryl
  • Patent number: 9199818
    Abstract: A paddle wheel compiler includes a paddle wheel that accepts sheets from the front of the paddle wheel to form a set, unlike a disk stacker which accepts sheets from the top or back of the disk and flips the sheet. The paddle wheel compiler is unique in that it maintains control of all sheets in a set, except for the top sheet during tamping. The top sheet is registered to the set with side tampers, followed by a scuffing action to register the sheet against a registration wall in the process direction.
    Type: Grant
    Filed: April 2, 2014
    Date of Patent: December 1, 2015
    Assignee: Xerox Corporation
    Inventors: Derek A Bryl, Douglas K Herrmann, Jason M LeFevre