Patents by Inventor Jeff Tsang

Jeff Tsang 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: 20180147832
    Abstract: A method of multi-color printing in a single pass using a fixed pagewide array of monochrome inkjet printheads. The printheads are aligned with each other in a media feed direction and the method includes the steps of: feeding print media along the media feed direction past a first printhead positioned furthest upstream in the array, a third printhead downstream of the first printhead and a second printhead positioned furthest downstream in the array; printing a yellow ink onto the print media using the first printhead; printing a black ink onto the print media using the third printhead; and printing a cyan or magenta ink onto the print media using the second printhead.
    Type: Application
    Filed: January 24, 2018
    Publication date: May 31, 2018
    Inventors: Angus North, Philip Palma, Brian Brown, Duncan McRae, Jognandan Prashar, Mile Jurevic, Sam Mallinson, Geordie McBain, Chia-An Lin, Sam Myers, Jeff Tsang, Benjamin Powell
  • Patent number: 9944065
    Abstract: A multi-color printer has an array of monochrome fixed inkjet printheads aligned in a media feed direction. The printer includes: a first printhead positioned furthest upstream relative to the media feed direction; a second printhead positioned furthest downstream relative to the media feed direction; and a third printhead positioned between the first and second printheads. Each printhead is supplied with a respective ink from a multi-color ink set, the first printhead being supplied with a lowest luminance ink of the ink set and the third printhead being supplied with a highest luminance ink of the ink set.
    Type: Grant
    Filed: July 10, 2014
    Date of Patent: April 17, 2018
    Assignee: MEMJET TECHNOLOGY LIMITED
    Inventors: Angus North, Philip Palma, Brian Brown, Duncan McRae, Jognandan Prashar, Mile Jurevic, Sam Mallinson, Geordie McBain, Chia-An Lin, Sam Myers, Jeff Tsang, Benjamin Powell
  • Patent number: 9434156
    Abstract: A method of printing from a fixed inkjet printhead having a plurality of ink planes. The method includes the steps of: feeding a print medium past the printhead in a media feed direction, the media feed direction defining relative upstream and downstream sides of the printhead; printing an image onto the print medium, the image being defined by image data; and printing a keep-wet pattern onto the print medium from each ink plane of the printhead, the keep-wet pattern being defined by a plurality of dots printed at a frequency sufficient to maintain hydration of each nozzle in the printhead. A first keep-wet pattern from a first ink plane is printed at a higher frequency than a second keep-wet pattern from a second ink plane, the first ink plane being furthest upstream in the printhead.
    Type: Grant
    Filed: November 21, 2014
    Date of Patent: September 6, 2016
    Assignee: Memjet Technology Limited
    Inventors: Angus North, Philip Palma, Brian Brown, Duncan McRae, Jognandan Prashar, Mile Jurevic, Sam Mallinson, Geordie McBain, Chia-An Lin, Sam Myers, Jeff Tsang, Benjamin Powell
  • Publication number: 20150367629
    Abstract: A method of printing from a fixed inkjet printhead having a plurality of ink planes. The method includes the steps of: feeding a print medium past the printhead in a media feed direction, the media feed direction defining relative upstream and downstream sides of the printhead; printing an image onto the print medium, the image being defined by image data; and printing a keep-wet pattern onto the print medium from each ink plane of the printhead, the keep-wet pattern being defined by a plurality of dots printed at a frequency sufficient to maintain hydration of each nozzle in the printhead. A first keep-wet pattern from a first ink plane is printed at a higher frequency than a second keep-wet pattern from a second ink plane, the first ink plane being furthest upstream in the printhead.
    Type: Application
    Filed: July 10, 2014
    Publication date: December 24, 2015
    Inventors: Angus North, Philip Palma, Brian Brown, Duncan McRae, Jognandan Prashar, Mile Jurevic, Sam Mallinson, Geordie McBain, Chia-An Lin, Sam Myers, Jeff Tsang, Benjamin Powell
  • Publication number: 20150202865
    Abstract: A method of printing from a fixed inkjet printhead having a plurality of ink planes. The method includes the steps of: feeding a print medium past the printhead in a media feed direction, the media feed direction defining relative upstream and downstream sides of the printhead; printing an image onto the print medium, the image being defined by image data; and printing a keep-wet pattern onto the print medium from each ink plane of the printhead, the keep-wet pattern being defined by a plurality of dots printed at a frequency sufficient to maintain hydration of each nozzle in the printhead. A first keep-wet pattern from a first ink plane is printed at a higher frequency than a second keep-wet pattern from a second ink plane, the first ink plane being furthest upstream in the printhead.
    Type: Application
    Filed: November 21, 2014
    Publication date: July 23, 2015
    Inventors: Angus North, Philip Palma, Brian Brown, Duncan McRae, Jognandan Prashar, Mile Jurevic, Sam Mallinson, Geordie McBain, Chia-An Lin, Sam Myers, Jeff Tsang, Benjamin Powell
  • Publication number: 20150029248
    Abstract: A method of printing from a fixed inkjet printhead having a plurality of ink planes. The method includes the steps of: feeding a print medium past the printhead in a media feed direction, the media feed direction defining relative upstream and downstream sides of the printhead; printing an image onto the print medium, the image being defined by image data; and printing a keep-wet pattern onto the print medium from each ink plane of the printhead, the keep-wet pattern being defined by a plurality of dots printed at a frequency sufficient to maintain hydration of each nozzle in the printhead. A first keep-wet pattern from a first ink plane is printed at a higher frequency than a second keep-wet pattern from a second ink plane, the first ink plane being furthest upstream in the printhead.
    Type: Application
    Filed: July 10, 2014
    Publication date: January 29, 2015
    Inventors: Angus North, Philip Palma, Brian Brown, Duncan McRae, Jognandan Prashar, Mile Jurevic, Sam Mallinson, Geordie McBain, Chia-An Lin, Sam Myers, Jeff Tsang, Benjamin Powell
  • Publication number: 20150029264
    Abstract: A multi-color printer has an array of monochrome fixed inkjet printheads aligned in a media feed direction. The printer includes: a first printhead positioned furthest upstream relative to the media feed direction; a second printhead positioned furthest downstream relative to the media feed direction; and a third printhead positioned between the first and second printheads. Each printhead is supplied with a respective ink from a multi-color ink set, the first printhead being supplied with a lowest luminance ink of the ink set and the third printhead being supplied with a highest luminance ink of the ink set.
    Type: Application
    Filed: July 10, 2014
    Publication date: January 29, 2015
    Inventors: Angus North, Philip Palma, Brian Brown, Duncan McRae, Jognandan Prashar, Mile Jurevic, Sam Mallinson, Geordie McBain, Jeff Hess, Chia-An Lin, Sam Myers, Jeff Tsang, Benjamin Powell