Patents by Inventor Christopher Chee

Christopher Chee 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: 20080074720
    Abstract: A module for mounting a micro-electromechanical system (MEMS) device includes a base having a first support and a second support. The second support has a support guide feature. The module also includes a bracket attached to the MEMS device. The bracket has a central axis, a first end, and a second end. The second end has a bracket guide feature. The first end is affixed to the first support of the base to form a cantilever arrangement. The support guide feature engages the bracket guide feature to form a sliding joint having a sliding axis substantially parallel to the central axis.
    Type: Application
    Filed: December 5, 2007
    Publication date: March 27, 2008
    Inventors: Christopher Chee, Martin Klement
  • Publication number: 20070070174
    Abstract: An imaging apparatus is provided comprising a frame having a portion upon which a printhead is adapted to be mounted. The printhead may comprise a housing including a main body, at least one flexible mounting beam extending from the main body, and at least one structural member coupled to the at least one flexible mounting beam. The printhead may also comprise a skew correction mechanism mounted to the printhead housing. The skew correction mechanism may include an adjustment member capable of engaging at least one surface on the printhead housing so as to adjust the position of the printhead housing relative to the frame portion.
    Type: Application
    Filed: September 23, 2005
    Publication date: March 29, 2007
    Inventors: Christopher Chee, Paul Horrall, Randall Hudson
  • Publication number: 20060065808
    Abstract: A module for mounting a micro-electromechanical system (MEMS) device includes a base having a first support and a second support. The second support has a support guide feature. The module also includes a bracket attached to the MEMS device. The bracket has a central axis, a first end, and a second end. The second end has a bracket guide feature. The first end is affixed to the first support of the base to form a cantilever arrangement. The support guide feature engages the bracket guide feature to form a sliding joint having a sliding axis substantially parallel to the central axis.
    Type: Application
    Filed: September 24, 2004
    Publication date: March 30, 2006
    Inventors: Christopher Chee, Martin Klement
  • Publication number: 20060033021
    Abstract: A scanning system for a printer or scanner that has a beam source that produces a light beam at a point of origin and has a scanning mirror that sweeps the light beam from a position “A” to a position “B.” A lens receives the light beam from the scanning mirror and directs the light beam as a scanning beam to an image plane surface. A first synchronizing mirror intercepts and reflects a light ray to a photo detection system when the scanning beam is at a position “A?” that is in the vicinity of position “A” and between position “A” and “B”. A second synchronizing mirror intercepts a light ray when the scanning beam is at a position “B?” that is in the vicinity of position “B” and between position “A” and “B”, and reflects the light ray to a folding mirror that reflects the light ray to the photo detection system. In some configurations two photo detection systems are used in lieu of the folding mirror.
    Type: Application
    Filed: August 11, 2004
    Publication date: February 16, 2006
    Inventor: Christopher Chee
  • Patent number: 6933960
    Abstract: A collimation assembly for use in a laser scanning unit is provided. Methods for aligning collimation and pre-scan assemblies in a laser scanning unit are further provided. Also provided are alignment structures for use in aligning collimation and pre-scan assemblies in a laser scanning unit.
    Type: Grant
    Filed: August 31, 2004
    Date of Patent: August 23, 2005
    Assignee: Lexmark International, Inc.
    Inventors: Christopher Chee, Robert Paterson
  • Patent number: 6888654
    Abstract: A laser scanning unit is provided comprising a housing; a scanning assembly including a scanning device; a first light beam source directing a first light beam toward the scanning device; a second light beam source directing a second light beam toward the scanning device; and first and second post-scan optical assemblies located to receive first and second scanning beams reflected from the scanning device. Each post-scan optical assembly may comprise a first, second and third fold mirror, a first f-theta lens located between the first and the second fold mirrors, and a second f-theta lens located to receive light reflected from the third fold mirror and outputting a compensated scanning beam for generating a scan line on a corresponding photoconductive member.
    Type: Grant
    Filed: September 5, 2002
    Date of Patent: May 3, 2005
    Assignee: Lexmark International, Inc.
    Inventors: Roger Cannon, Christopher Chee, Robert Paterson, Dawson Ward
  • Publication number: 20050046651
    Abstract: An apparatus and method for ink-jet printing onto an intermediate drum in a helical pattern while correcting for image skew and aliasing. A plurality of ink-jet print heads place an image on an intermediate drum, impervious to ink, in a helical patter. To compensate for helical printing, the image is altered by nozzle placement and image manipulation to correct for skewing errors, and thereafter, the nozzle timing is adjusted to correct for aliasing. The plurality of print heads move parallel to the axis of rotation of the drum while the drum is simultaneously rotating, causing the image to be placed in a helical pattern. Once the entire image is placed on the drum, paper is rolled against the drum under pressure and the image is transferred thereto.
    Type: Application
    Filed: August 28, 2003
    Publication date: March 3, 2005
    Inventors: Benjamin Askren, Robert Burdick, Bill Chappel, Christopher Chee, William Cook, David Cseledy, Larry Foster, James Harden, William Klein
  • Patent number: 6836280
    Abstract: A collimation assembly for use in a laser scanning unit is provided. Methods for aligning collimation and pre-scan assemblies in a laser scanning unit are further provided. Also provided are alignment structures for use in aligning collimation and pre-scan assemblies in a laser scanning unit.
    Type: Grant
    Filed: September 5, 2002
    Date of Patent: December 28, 2004
    Assignee: Lexmark International, Inc.
    Inventors: Roger Cannon, Christopher Chee, Robert Paterson
  • Publication number: 20040047389
    Abstract: A collimation assembly for use in a laser scanning unit is provided. Methods for aligning collimation and pre-scan assemblies in a laser scanning unit are further provided. Also provided are alignment structures for use in aligning collimation and pre-scan assemblies in a laser scanning unit.
    Type: Application
    Filed: September 5, 2002
    Publication date: March 11, 2004
    Inventors: Roger Cannon, Christopher Chee, Robert Paterson
  • Publication number: 20040047016
    Abstract: A laser scanning unit is provided comprising a housing; a scanning assembly including a scanning device; a first light beam source directing a first light beam toward the scanning device; a second light beam source directing a second light beam toward the scanning device; and first and second post-scan optical assemblies located to receive first and second scanning beams reflected from the scanning device. Each post-scan optical assembly may comprise a first, second and third fold mirror, a first f-theta lens located between the first and the second fold mirrors, and a second f-theta lens located to receive light reflected from the third fold mirror and outputting a compensated scanning beam for generating a scan line on a corresponding photoconductive member.
    Type: Application
    Filed: September 5, 2002
    Publication date: March 11, 2004
    Inventors: Roger Cannon, Christopher Chee, Robert Paterson, Dawson Ward