Patents by Inventor Pui Wen Huang

Pui Wen Huang 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: 6315282
    Abstract: An apparatus capable of performing pick operations on multiple sizes in a printing device is disclosed. This apparatus separates a media sheet from a stack and drives it along a media path. The apparatus also corrects any pick skew of the media sheet caused during the pick operation before the media sheet is transferred to the drive roller. By ensuring that the traversing media sheet has a leveled leading edge, the pick skew of the media sheet is substantially eliminated.
    Type: Grant
    Filed: June 22, 1998
    Date of Patent: November 13, 2001
    Assignee: Hewlett-Packard Company
    Inventors: Ching Yong Chua, Ah Chong Johnny Tee, Seng Lim Richard Wu, Pui Wen Huang
  • Publication number: 20010014241
    Abstract: A print feed mechanism for feeding print media to a printing zone of a printer in which the feed mechanism is adjustable to vary the position of a pinch roller against a drive roller so as to vary the angle at which print media is fed to the printing zone.
    Type: Application
    Filed: December 29, 1999
    Publication date: August 16, 2001
    Applicant: HEWLETT-PACKARD COMPANY
    Inventors: PUI WEN HUANG, KONG HOCK LIM, T. SIVANANDAM
  • Publication number: 20010002077
    Abstract: An apparatus capable of performing pick operations on multiple sizes in a printing device is disclosed. This apparatus separates a media sheet from a stack and drives it along a media path. The apparatus also corrects any pick skew of the media sheet caused during the pick operation before the media sheet is transferred to the drive roller. By ensuring that the traversing media sheet has a leveled leading edge, the pick skew of the media sheet is substantially eliminated.
    Type: Application
    Filed: June 22, 1998
    Publication date: May 31, 2001
    Inventors: CHING YONG CHUA, AH CHONG JOHNNY TEE, SENG LIM RICHARD WU, PUI WEN HUANG
  • Patent number: 6152440
    Abstract: A sheet media handling system for aligned feeding of sheet media of different widths is disclosed. This sheet media handling system caters to a wide-format printer which has two media trays, a main tray and a bypass tray positioned above the main tray. In such a printer, a larger width sheet medium in the bypass tray is insufficiently supported when a stack of smaller width sheet media is present in the main tray. Such a situation may result in skewing or jamming of the larger width sheet medium. The sheet media handling system overcomes such a problem by having a secondary pressure plate in addition to a primary pressure plate. This secondary pressure plate is moveable independently of the primary pressure plate so that the secondary pressure plate is operable to provide appropriate support for the partially supported larger width sheet medium in the bypass tray.
    Type: Grant
    Filed: December 3, 1999
    Date of Patent: November 28, 2000
    Assignee: Hewlett-Packard Company
    Inventors: Kok Sam Yip, Pui Wen Huang, Choon Siang Peck
  • Patent number: 6139011
    Abstract: A printer having a facility for manually directing a printing medium along a printing medium path. The printer includes an external housing, a drive roller arranged about an axis of rotation for feeding a printing medium through a processing zone of the printer, a control member arranged about an axis of rotation, and movable between a first axial position in which the control member protrudes from said external housing so as to be manually actuable, and a second axial position in which the control member is retracted relative to the first axial position, and a coupling mechanism selectively coupling the control member and the feed roller to translate rotational movement of the control member into rotational movement of the feed roller, said coupling mechanism being engaged when the control member is in the first axial position and disengaged when the control member is in the second axial position.
    Type: Grant
    Filed: October 2, 1998
    Date of Patent: October 31, 2000
    Assignee: Hewlett-Packard Company
    Inventors: Pui Wen Huang, Kok Sam Yip, Ching Yong Chua, Seng Lim Richard Wu