Patents by Inventor Stacey Vaughan Mitchell

Stacey Vaughan Mitchell 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: 10625962
    Abstract: Separation strips in a dam aid in the separation of adjacent sheets of media being fed from a stack of sheets so that only one sheet is fed to a process station and, more particularly, to separating the uppermost or top sheet of a stack of sheets from the next adjacent sheet during feeding of the top sheet from the stack of sheets of media. When a lift plate is present that adjusts the height of the media stack, rotation of the separation strips to maintain a constant separation angle improves media feed reliability. Curvature of the separation strips may also maintain the separation angle as the lift plate raises the position of the top media sheet.
    Type: Grant
    Filed: July 18, 2018
    Date of Patent: April 21, 2020
    Assignee: LEXMARK INTERNATIONAL, INC.
    Inventors: Angel Macuha Alagos, Edmund Hulin James, III, Stacey Vaughan Mitchell, Chad Michael Piening, Louann Behymer Samuels, Curtis Duane Woodson
  • Publication number: 20200024091
    Abstract: Separation strips in a dam aid in the separation of adjacent sheets of media being fed from a stack of sheets so that only one sheet is fed to a process station and, more particularly, to separating the uppermost or top sheet of a stack of sheets from the next adjacent sheet during feeding of the top sheet from the stack of sheets of media. When a lift plate is present that adjusts the height of the media stack, rotation of the separation strips to maintain a constant separation angle improves media feed reliability. Curvature of the separation strips may also maintain the separation angle as the lift plate raises the position of the top media sheet.
    Type: Application
    Filed: July 18, 2018
    Publication date: January 23, 2020
    Inventors: Angel Macuha Alagos, Edmund Hulin James, III, Stacey Vaughan Mitchell, Chad Michael Piening, Louann Behymer Samuels, Curtis Duane Woodson
  • Patent number: 9988224
    Abstract: A removable media tray assembly for an image forming device according to one embodiment includes a media tray having a bottom surface and a front wall extending upward from the bottom surface. A bottom surface defines a media storage location for storing a stack of media sheets. The assembly includes a housing having an opening therein to receive the media tray. A magnet and a plate provide a latching force FL greater than a pick motor stall force keeping the media tray in a closed position during media picking. A handle assembly including a finger bar and a pivoting link is mounted to the front wall. With the media tray being held closed by the latching force, a user-supplied actuation force FA that is less than 22.2 N applied to the finger bar, pivots the link which acts as a force multiplier providing a release force exceeding the latching force.
    Type: Grant
    Filed: May 30, 2017
    Date of Patent: June 5, 2018
    Assignee: Lexmark International, Inc.
    Inventors: Michael William Lawrence, Dustin Daniel Fichter, Neal Douglas McFarland, Stacey Vaughan Mitchell, Angel Macuha Alagos, Douglas Andagan Baena, Jr., Pat Marlon Cartagena Limosnero
  • Publication number: 20170267470
    Abstract: A removable media tray assembly for an image forming device according to one embodiment includes a media tray having a bottom surface and a front wall extending upward from the bottom surface. A bottom surface defines a media storage location for storing a stack of media sheets. The assembly includes a housing having an opening therein to receive the media tray. A magnet and a plate provide a latching force FL greater than a pick motor stall force keeping the media tray in a closed position during media picking. A handle assembly including a finger bar and a pivoting link is mounted to the front wall. With the media tray being held closed by the latching force, a user-supplied actuation force FA that is less than 22.2 N applied to the finger bar, pivots the link which acts as a force multiplier providing a release force exceeding the latching force.
    Type: Application
    Filed: May 30, 2017
    Publication date: September 21, 2017
    Inventors: MICHAEL WILLIAM LAWRENCE, DUSTIN DANIEL FICHTER, NEAL DOUGLAS MCFARLAND, STACEY VAUGHAN MITCHELL, ANGEL MACUHA ALAGOS, DOUGLAS ANDAGAN BAENA, JR., PAT MARLON CARTAGENA LIMOSNERO
  • Publication number: 20170247210
    Abstract: A removable media tray assembly for an image forming device according to one embodiment includes a media tray having a bottom surface and a front wall extending upward from the bottom surface. A bottom surface defines a media storage location for storing a stack of media sheets. The assembly includes a housing having an opening therein to receive the media tray. A magnet and a plate provide a latching force FL greater than a pick motor stall force keeping the media tray in a closed position during media picking. A handle assembly including a finger bar and a pivoting link is mounted to the front wall. With the media tray being held closed by the latching force, a user-supplied actuation force FA that is less than 22.2 N applied to the finger bar, pivots the link which acts as a force multiplier providing a release force exceeding the latching force.
    Type: Application
    Filed: February 25, 2016
    Publication date: August 31, 2017
    Inventors: MICHAEL WILLIAM LAWRENCE, DUSTIN DANIEL FICHTER, NEAL DOUGLAS MCFARLAND, STACEY VAUGHAN MITCHELL, ANGEL MACUHA ALAGOS, DOUGLAS ANDAGAN BAENA, JR., PAT MARLON CARTAGENA LIMOSNERO
  • Patent number: 9745154
    Abstract: A removable media tray assembly for an image forming device according to one embodiment includes a media tray having a bottom surface and a front wall extending upward from the bottom surface. A bottom surface defines a media storage location for storing a stack of media sheets. The assembly includes a housing having an opening therein to receive the media tray. A magnet and a plate provide a latching force FL greater than a pick motor stall force keeping the media tray in a closed position during media picking. A handle assembly including a finger bar and a pivoting link is mounted to the front wall. With the media tray being held closed by the latching force, a user-supplied actuation force FA that is less than 22.2 N applied to the finger bar, pivots the link which acts as a force multiplier providing a release force exceeding the latching force.
    Type: Grant
    Filed: February 25, 2016
    Date of Patent: August 29, 2017
    Assignee: Lexmark International Inc.
    Inventors: Michael William Lawrence, Dustin Daniel Fichter, Neal Douglas McFarland, Stacey Vaughan Mitchell, Angel Macuha Alagos, Douglas Andagan Baena, Jr., Pat Marlon Cartagena Limosnero
  • Patent number: 9663312
    Abstract: A media restraint for a removable media tray and slidably operable without the use of a pinching force. The media restraint slidably positionable on a track in a removable media tray and is operable without pinching. A latching plunger in the media restraint is biased into engagement with a track provided in the removable media tray and is moved by a rack and pinion mechanism to a released position allowing the media restraint to be moved along the track. The media restraint is operable by a finger of the user applying a downward force to the media restraint to release the plunger from the track and allowing the media restraint to be moved along the track. Upon removal of the downward force, a biasing member reengages the plunger with the track.
    Type: Grant
    Filed: March 4, 2016
    Date of Patent: May 30, 2017
    Assignee: Lexmark International, Inc.
    Inventors: Neal Douglas McFarland, Dustin Daniel Fichter, Stacey Vaughan Mitchell
  • Patent number: 9604802
    Abstract: A media restraint for a removable media tray and slidably operable without the use of a pinching force. The media restraint slidably positionable on a track in a removable media tray and is operable without pinching. A pair of latching cams are used to engage the media restraint to the track and have serrated portions pivotally mounted to a bottom of the media restraint. The media restraint is operable by a finger of the user applying a downward force to the media restraint allowing a rack and pinion to horizontally translate a rack portion of the pair of latching cams away from the track and pivot the serrated portions away from the track and allowing the media restraint to be moved along the track. Upon removal of the downward force, a biasing member translates the latching cams back to reengage with the track.
    Type: Grant
    Filed: March 4, 2016
    Date of Patent: March 28, 2017
    Assignee: LEXMARK INTERNATIONAL, INC.
    Inventors: Neal Douglas McFarland, Dustin Daniel Fichter, Stacey Vaughan Mitchell, Edward Joseph Walden
  • Patent number: 9580258
    Abstract: A media restraint for a removable media tray and slidably operable without the use of a pinching force. The media restraint slidably positionable on a track in a removable media tray and is operable without pinching. A pair of pivoting latching cams are used to engage the media restraint to the track and have serrated portions pivotally mounted to a bottom of the media restraint. The media restraint is operable by a finger of the user applying a downward force to an actuator that spreads two cam plates apart which in turn pivot the pair of latching cams to release the media restraint from the track and allowing it to be moved along the track. Upon removal of the downward force, a biasing member lifts the actuator to bring the two cam plates back to their first positions thereby pivoting the pair of latching cams back to reengage with the track.
    Type: Grant
    Filed: March 4, 2016
    Date of Patent: February 28, 2017
    Assignee: Lexmark International, Inc.
    Inventors: Neal Douglas McFarland, Dustin Daniel Fichter, Stacey Vaughan Mitchell, Hannibal Bartolata Aljecera, Winston Bercades Gomez, Pat Marlon Cartagena Limosnero, Lowell Libo-On Tacadao
  • Patent number: 9533842
    Abstract: An imaging device having a sheet restraint sensing system is disclosed. The system includes a frame having an opening, a linear sensor strip located on the frame having a length, and a media tray having a sheet restraint that presses against the linear sensor strip when the media tray is located in the opening. The sheet restraint is constrained by the media tray to move relative to the media tray no more than a maximum adjustment displacement. The maximum adjustment displacement is less than the length of the linear sensor strip. Other systems are disclosed.
    Type: Grant
    Filed: May 31, 2016
    Date of Patent: January 3, 2017
    Assignee: Lexmark International, Inc.
    Inventors: Genri Solano Belarmino, Dustin Daniel Fichter, Neal Douglas McFarland, Stacey Vaughan Mitchell
  • Patent number: 8371572
    Abstract: A detachable reversible pick mechanism for a media input tray.
    Type: Grant
    Filed: October 29, 2010
    Date of Patent: February 12, 2013
    Assignee: Lexmark International, Inc.
    Inventors: Brian Allen Blair, Dustin Daniel Fichter, Derek Masami Inouye, Stacey Vaughan Mitchell, Michael James Shanor, Jeffrey Lawrence Tonges, Edward Lynn Triplett
  • Patent number: 8235376
    Abstract: A removable input tray assembly for an image forming device according to one embodiment includes a media tray having a bottom surface and a wall extending upward from the bottom surface. The bottom surface defines a media storage location for storing a stack of media sheets. The assembly further includes a housing having an opening therein to receive the media tray. An inclined media dam is formed in the wall and has a media contact surface for directing media advanced from the media storage location. A channel is provided in the wall and extends the height of the wall for directing media passing therethrough. A roller nip is formed in the channel within the media tray by a pair of rollers for advancing media through the channel.
    Type: Grant
    Filed: October 29, 2010
    Date of Patent: August 7, 2012
    Assignee: Lexmark International, Inc.
    Inventors: Brian Allen Blair, Stacey Vaughan Mitchell, Daniel Lee Thomas, Edward Lynn Triplett
  • Publication number: 20120103118
    Abstract: A detachable reversible pick mechanism for a media input tray.
    Type: Application
    Filed: October 29, 2010
    Publication date: May 3, 2012
    Inventors: Brian Allen Blair, Dustin Daniel Fichter, Derek Masami Inouye, Stacey Vaughan Mitchell, Michael James Shanor, Jeffrey Lawrence Tonges, Edward Lynn Triplett
  • Publication number: 20120104682
    Abstract: A removable input tray assembly for an image forming device according to one embodiment includes a media tray having a bottom surface and a wall extending upward from the bottom surface. The bottom surface defines a media storage location for storing a stack of media sheets. The assembly further includes a housing having an opening therein to receive the media tray. An inclined media dam is formed in the wall and has a media contact surface for directing media advanced from the media storage location. A channel is provided in the wall and extends the height of the wall for directing media passing therethrough. A roller nip is formed in the channel within the media tray by a pair of rollers for advancing media through the channel.
    Type: Application
    Filed: October 29, 2010
    Publication date: May 3, 2012
    Inventors: Brian Allen Blair, Stacey Vaughan Mitchell, Daniel Lee Thomas, Edward Lynn Triplett
  • Patent number: 8020850
    Abstract: A removable input tray assembly for an image forming device according to one embodiment includes a media tray having a bottom surface defining a media storage location, a wall extending upward from the bottom surface and a housing having an opening therein to receive the tray. An inclined media dam having a media contact surface is formed in the wall. A channel extends the height of the wall and has a front wall, a rear wall, a bottom opening and a top opening. A separator roller is rotatably mounted below the media contact surface and has a first portion of its surface radially extending through a corresponding aperture in the media dam and a second portion radially extending through a corresponding aperture in the rear wall of the channel. A roller nip is formed in the channel within the media tray by the separator roller and an opposing backup roller.
    Type: Grant
    Filed: October 29, 2010
    Date of Patent: September 20, 2011
    Assignee: Lexmark International, Inc.
    Inventors: Brian Allen Blair, Stacey Vaughan Mitchell, Edward Lynn Triplett
  • Patent number: 6550758
    Abstract: Sheets (57) exit printer (1) into finisher (3) where they are moved against perpendicular reference walls (61, 69) by frictional fingers (21, 23). The fingers are rotated away while a sheet is moved downward. Since the fingers are near their reference surface, buckling of the sheets normally does not occur, so the sheet stays in place. In an embodiment, the fingers move with a resilient force selected to be low enough so that the fingers stop when the sheet contacts the reference wall.
    Type: Grant
    Filed: January 31, 2001
    Date of Patent: April 22, 2003
    Assignee: Lexmark International, Inc.
    Inventors: Jeffrey Allen Ardery, Michael Kurt Gordon, David Emerson Greer, Stacey Vaughan Mitchell, Daniel Joseph Westhoff
  • Publication number: 20020101029
    Abstract: Sheets (57) exit printer (1) into finisher (3) where they are moved against perpendicular reference walls (61, 69) by frictional fingers (21, 23). The fingers are rotated away while a sheet is moved downward. Since the fingers are near their reference surface, buckling of the sheets normally does not occur, so the sheet stays in place. In an embodiment, the fingers move with a resilient force selected to be low enough so that the fingers stop when the sheet contacts the reference wall.
    Type: Application
    Filed: January 31, 2001
    Publication date: August 1, 2002
    Inventors: Jeffrey Allen Ardery, Michael Kurt Gordon, David Emerson Greer, Stacey Vaughan Mitchell, Daniel Joseph Westhoff