Patents by Inventor Keng Leong Ng

Keng Leong Ng 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: 10889135
    Abstract: A mechanism for an ADF having upper and lower trays, a base connecting the trays, and a cover pivotally connected to the upper tray includes a housing provided within the base and movable relative thereto. A transmission has a gripping position for transporting paper along a path from the upper tray to the lower tray and a release position allowing a paper jam along the path to be remedied. The cover is pivotable between a first condition maintaining the transmission in the gripping position and a second condition allowing the housing to move relative to the trays to place the transmission in the release position.
    Type: Grant
    Filed: September 12, 2016
    Date of Patent: January 12, 2021
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Ryan M Smith, Keng Leong Ng, Eric Andersen
  • Patent number: 10855861
    Abstract: One example includes a device that is comprised of a cover housing, a reflective sheet, a coupler, and a fastener. The reflective sheet may hold media against a planar transparent scanning area of the device. The coupler may removably attach the reflective sheet to the cover housing, the coupler having a resilient member to exert an axial restoring force between the reflective sheet and the cover housing. The fastener may fix the coupler to the reflective sheet.
    Type: Grant
    Filed: September 9, 2016
    Date of Patent: December 1, 2020
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Rene Valenzuela, Ryan M Smith, Keng Leong Ng
  • Publication number: 20190230238
    Abstract: One example includes a device that is comprised of a cover housing, a reflective sheet, a coupler, and a fastener. The reflective sheet may hold media against a planar transparent scanning area of the device. The coupler may removably attach the reflective sheet to the cover housing, the coupler having a resilient member to exert an axial restoring force between the reflective sheet and the cover housing. The fastener may fix the coupler to the reflective sheet.
    Type: Application
    Filed: September 9, 2016
    Publication date: July 25, 2019
    Inventors: Rene Valenzuela, Ryan M Smith, Keng Leong Ng
  • Publication number: 20190217636
    Abstract: A mechanism for an ADF having upper and lower trays, a base connecting the trays, and a cover pivotally connected to the upper tray includes a housing provided within the base and movable relative thereto. A transmission has a gripping position for transporting paper along a path from the upper tray to the lower tray and a release position allowing a paper jam along the path to be remedied. The cover is pivotable between a first condition maintaining the transmission in the gripping position and a second condition allowing the housing to move relative to the trays to place the transmission in the release position.
    Type: Application
    Filed: September 12, 2016
    Publication date: July 18, 2019
    Inventors: Ryan M Smith, Keng Leong Ng, Eric Andersen
  • Patent number: 8931164
    Abstract: A method of making and using a printer comprising a duplexing unit that pivots along a horizontal plane for media path access. The duplexing unit does not contain any motor driven rollers for moving a media sheet therethrough. The duplexing unit's vertical axis hinge allows the duplexing unit to swing open and closed horizontally.
    Type: Grant
    Filed: May 31, 2011
    Date of Patent: January 13, 2015
    Assignee: Eastman Kodak Company
    Inventors: Siew Pern Chuang, Richard A. Murray, Venkatesh Mysore Nagaraja Rao, Keng Leong Ng
  • Patent number: 8649073
    Abstract: A scanner assembly includes an automatic document feeder and a first scanner. The automatic document feeder defines a media pathway that includes an input portion and an output portion having an exit roller. The first scanner is positioned along the media pathway upstream from the exit roller. In a first assembled configuration, the assembly is configured to scan both a first side and a second side of the media via the first scanner. In a second assembled configuration, the assembly additionally includes a second scanner positioned along the output portion and interposed between the first scanner and the exit roller. In the second configuration, the assembly is configured to scan the first side of media via the first scanner and to scan the second side of media via the second scanner.
    Type: Grant
    Filed: June 10, 2011
    Date of Patent: February 11, 2014
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Thaddie Natalaray, Kyi Thu Maung, U Kyaw Thu Ra, Tok Wee Hien, Yeo Meng Hui, Lam Siew Hong, Jeoffrey Goh Choon Kiat, Thong Wei Leong, Chiam Ter Wei, Long C. Doan, Jeffrey C. Madsen, Curtis J. Behrend, James C Albritton-Mcdonald, Keng-Leong Ng
  • Patent number: 8613440
    Abstract: An automatic document feeding device including a pick motor coupled with a pick assembly, a deskew motor coupled with a deskew assembly, a sensor assembly coupled with a main media path and the deskew motor, and a feed motor coupled with a feed assembly. The deskew motor drives the deskew assembly, the deskew assembly deskewing the media sheet and moving the media sheet from the pick assembly to the feed assembly, the deskew assembly moving independently of the pick assembly and the feed assembly. The sensor assembly includes a plurality of sensors. The sensor assembly senses the media sheet moving along the main media path and sends at least one signal to a computer. The computer, based on the at least one signal, sends, an activation signal to at least one of the pick, deskew and feed motors and the first scanner.
    Type: Grant
    Filed: July 11, 2011
    Date of Patent: December 24, 2013
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Long C Doan, Thaddie Natalaray, Kyi Thu Maung, Jeffrey C Madsen, Jim Albritton-Mcdonald, Jeoffrey Goh, Hin Peng Teoh, Curtis J Behrend, Keng Leong Ng
  • Patent number: 8591022
    Abstract: A pivotable duplexing unit is attached to the wall of a printer using a hinge having an axis that is substantially perpendicular to the base. A latch and catch holds the pivotable duplexing unit in a closed position relative to the wall of the printing apparatus. The wall includes a support member for the hinge, and the pivotable duplexing unit further includes a pin for pivoting in a support member of the hinge. The support member includes a bearing surface that is substantially parallel to the base. The pin member includes an end that makes pivotable contact with the bearing surface.
    Type: Grant
    Filed: May 31, 2011
    Date of Patent: November 26, 2013
    Assignee: Eastman Kodak Company
    Inventors: Siew Pern Chuang, Richard A. Murray, Venkatesh Mysore Nagaraja Rao, Keng Leong Ng
  • Patent number: 8544840
    Abstract: An automatic document feeder with a drive system that can efficiently handle double-side scanning and accommodate more than one timing sequence for sequentially picking individual sheets from a stack using only two motors—a pick motor and a media motor. The automatic document feeder includes a pickup unit with a pick roller, a set of de-skew rollers, a main media path configured to guide a media sheet from the pickup unit to a scanning region and from the scanning region to an output tray, and a switch-back path configured to guide the media sheet back into the main media path. The drive system is operable to provide a high-speed picking mode and a delayed picking mode. In the high-speed picking mode, the pickup unit is driven by the pick motor to pull a subsequent media sheet from a stack of media sheet as soon as a previously pulled media sheet has passed the pick roller.
    Type: Grant
    Filed: April 30, 2007
    Date of Patent: October 1, 2013
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Keng Leong Ng, Thaddie Natalaray, Kyi Thu Maung, Toh Tung Wong, Wayne E Foote, Jeffrey C Madsen
  • Publication number: 20130015621
    Abstract: An automatic document feeding device including a pick motor coupled with a pick assembly, a deskew motor coupled with a deskew assembly, a sensor assembly coupled with a main media path and the deskew motor, and a feed motor coupled with a feed assembly. The deskew motor drives the deskew assembly, the deskew assembly deskewing the media sheet and moving the media sheet from the pick assembly to the feed assembly, the deskew assembly moving independently of the pick assembly and the feed assembly. The sensor assembly includes a plurality of sensors. The sensor assembly senses the media sheet moving along the main media path and sends at least one signal to a computer. The computer, based on the at least one signal, sends, an activation signal to at least one of the pick, deskew and feed motors and the first scanner.
    Type: Application
    Filed: July 11, 2011
    Publication date: January 17, 2013
    Inventors: Long C. Doan, Thaddie Natalaray, Kyi Thu Maung, Jeffrey C. Madsen, Jim Albritton-McDonald, Jeoffrey Goh, Hin Peng Teoh, Curtis J. Behrend, Keng Leong Ng
  • Publication number: 20120314266
    Abstract: A scanner assembly includes an automatic document feeder and a first scanner. The automatic document feeder defines a media pathway that includes an input portion and an output portion having an exit roller. The first scanner is positioned along the media pathway upstream from the exit roller. In a first assembled configuration, the assembly is configured to scan both a first side and a second side of the media via the first scanner. In a second assembled configuration, the assembly additionally includes a second scanner positioned along the output portion and interposed between the first scanner and the exit roller. In the second configuration, the assembly is configured to scan the first side of media via the first scanner and to scan the second side of media via the second scanner.
    Type: Application
    Filed: June 10, 2011
    Publication date: December 13, 2012
    Inventors: Thaddie Natalaray, Kyi Thu Maung, U Kyaw Thu Ra, Tok Wee Hien, Yeo Meng Hui, Lam Siew Hong, Jeoffrey Goh Choon Kiat, Thong Wei Leong, Chiam Ter Wei, Long C. Doan, Jeffrey C. Madsen, Curtis J. Behrend, James C. Albritton-Mcdonald, Keng-Leong Ng
  • Publication number: 20120304436
    Abstract: A method of making and using a printer comprising a duplexing unit that pivots along a horizontal plane for media path access. The duplexing unit does not contain any motor driven rollers for moving a media sheet therethrough. The duplexing unit's vertical axis hinge allows the duplexing unit to swing open and closed horizontally.
    Type: Application
    Filed: May 31, 2011
    Publication date: December 6, 2012
    Inventors: Siew Pern Chuang, Richard A. Murray, Venkatesh Mysore Nagaraja Rao, Keng Leong Ng
  • Publication number: 20120306978
    Abstract: A pivotable duplexing unit is attached to the wall of a printer using a hinge having an axis that is substantially perpendicular to the base. A latch and catch holds the pivotable duplexing unit in a closed position relative to the wall of the printing apparatus. The wall includes a support member for the hinge, and the pivotable duplexing unit further includes a pin for pivoting in a support member of the hinge. The support member includes a bearing surface that is substantially parallel to the base. The pin member includes an end that makes pivotable contact with the bearing surface.
    Type: Application
    Filed: May 31, 2011
    Publication date: December 6, 2012
    Inventors: Siew Pern Chuang, Richard A. Murray, Venkatesh Mysore Nagaraja Rao, Keng Leong Ng
  • Publication number: 20080265485
    Abstract: A sheet discharge roller assembly for a sheet feeding apparatus includes an upper cylindrical exit roller mounted on a rotatable drive shaft and a lower cylindrical pinch roller having a wheel attached to one end. The pinch roller has a length that is longer than the length of the exit roller and is moveable into contact with the exit roller so as to form a nip for gripping a print media to be discharged. The wheel has a diameter that is larger than that of the pinch roller and an outer circumferential edge composed of a plurality of protruding contact portions arranged in a radial pattern. The wheel is positioned so that the wheel can contact the media sheet being gripped and cause the sheet to deform temporarily, thereby making the sheet more rigid.
    Type: Application
    Filed: April 26, 2007
    Publication date: October 30, 2008
    Inventors: Toh Tung Wong, Keng Leong NG, Wayne E. Foote, Jeffrey C. Madsen, Thaddie Natalaray, Kyi Thu Maung
  • Publication number: 20080265489
    Abstract: An automatic document feeder with a drive system that can efficiently handle double-side scanning and accommodate more than one timing sequence for sequentially picking individual sheets from a stack using only two motors—a pick motor and a media motor. The automatic document feeder includes a pickup unit with a pick roller, a set of de-skew rollers, a main media path configured to guide a media sheet from the pickup unit to a scanning region and from the scanning region to an output tray, and a switch-back path configured to guide the media sheet back into the main media path. The drive system is operable to provide a high-speed picking mode and a delayed picking mode. In the high-speed picking mode, the pickup unit is driven by the pick motor to pull a subsequent media sheet from a stack of media sheet as soon as a previously pulled media sheet has passed the pick roller.
    Type: Application
    Filed: April 30, 2007
    Publication date: October 30, 2008
    Inventors: Keng Leong Ng, Thaddie Natalaray, Kyi Thu Maung, Toh Tung Wong, Wayne E. Foote, Jeffrey C. Madsen
  • Patent number: 7418766
    Abstract: An upper piggybacked unit of a tandem unit is provided with a hinge unit and at least one motion lock to prevent the upper unit from falling away from the lower unit when it is tandemly coupled to the lower unit and the lower unit is pivoted to a non-horizontal position. The motion lock may inhibit rotation and/or translation of the upper unit. The motion lock may also be self-actuating, such as a gravity dependent lock mechanism. A lock override mechanism may be provided to allow the lock to yield to excessive force without causing damage. The lock enable condition may be automatically reset after the override condition so that no special knowledge or action on the part of the user is required to return the hinge to normal operation.
    Type: Grant
    Filed: December 22, 2004
    Date of Patent: September 2, 2008
    Assignee: Xerox Corporation
    Inventors: Aaron T. Nelson, Keng Leong Ng, Brent R. Jones, Yin Mei (Regina) Sia, Sheau Ming Ng
  • Patent number: 7201524
    Abstract: A media path control device has two sets of parallel arms with opposing rollers to manipulate the movement of print media. The arms are moveable in a substantially vertical plane through motors. The arms can be of different lengths to establish an optimal trajectory or height of the media to change the trajectory or travel path of the media. The rollers are reversible to change the trajectory or travel path of the media. Rotation of the arms may be stopped at various points along their travel arc to position the media at a desired or plane.
    Type: Grant
    Filed: January 28, 2005
    Date of Patent: April 10, 2007
    Assignee: Xerox Corporation
    Inventors: Brent R. Jones, Keng Leong Ng, Joshua K. Hoyt, Yin Mei Sia, Aaron T. Nelson, Thomas R. Edney, Scott J. Korn, Boon Hang Ng
  • Patent number: 6921222
    Abstract: A high-speed printer is provided. The printer includes a media assembly for supporting a media roll that supplies the sheet of media and also for controlling a flow rate of the sheet of media through the printer. The sheet of media is received by the feedback control system, which is used to detect a slack position of the sheet of media. The slack position is used by the media assembly to determine a flow rate of the sheet of media through the printer. In addition, the printer also includes a roller system for receiving the sheet of material from the feedback control system and to feed the sheet of media to a print carriage.
    Type: Grant
    Filed: September 6, 2002
    Date of Patent: July 26, 2005
    Assignee: Venture Manufacturing (Singapore) Ltd.
    Inventors: Keng Leong Ng, Kok Hong Kan, Yong Soon Lim, Siao Hau The, Chi Siang Sean Yew, Chee Weng Wong, Chee Seng Ong
  • Publication number: 20040156665
    Abstract: A high-speed printer is provided. The printer includes a media assembly for supporting a media roll that supplies the sheet of media and also for controlling a flow rate of the sheet of media through the printer. The sheet of media is received by the feedback control system, which is used to detect a slack position of the sheet of media. The slack position is used by the media assembly to determine a flow rate of the sheet of media through the printer. In addition, the printer also includes a roller system for receiving the sheet of material from the feedback control system and to feed the sheet of media to a print carriage.
    Type: Application
    Filed: September 6, 2002
    Publication date: August 12, 2004
    Applicant: VENTURE MANUFACTURING (SINGAPORE) LTD.
    Inventors: Keng Leong Ng, Kok Hong Kan, Yong Soon Lim, Siao Hau Teh, Chi Siang Sean Yew, Ghee Weng Wong, Chee Seng ong
  • Patent number: 6540320
    Abstract: A system and a method for servicing a printhead using a low-height service station design. The system of the present invention includes a low-height service station having a gear and clutch arrangement that permits a service station drive assembly and a print media feed assembly to use the same motor. By momentarily reversing the motor, the gear and clutch arrangement permits the service station drive assembly to be engaged and the print media feed assembly to be disengaged, or vice versa. Moreover, the gear and clutch arrangement provides a means for a capping platform and a wiping platform within the service station to move independently of each other.
    Type: Grant
    Filed: January 5, 2000
    Date of Patent: April 1, 2003
    Assignee: Hewlett-Packard Company
    Inventor: Keng Leong Ng