Patents by Inventor Andrew J. S. Booth

Andrew J. S. Booth 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: 6938972
    Abstract: In an inkjet printer there is a trade off between speed and quality. Higher speed can be achieved at the expense of quality as inkjet droplets deposited are distorted in shape and or placement position if the relative velocity between the inkjet nozzles and the printing medium is simply increased. The velocity above which distortion occurs is termed threshold velocity. A feed mechanism that varies the printing medium advance rate to allow printing at below threshold velocity while maintaining a high average feed rate is described. By advancing the printing medium at a periodically varying velocity, with the printing medium velocity lower than the threshold velocity, the problem is avoided.
    Type: Grant
    Filed: September 23, 2003
    Date of Patent: September 6, 2005
    Assignee: Creo SRL
    Inventors: Andrew J. S. Booth, Carl A. Voth, Daniel Gelbart
  • Patent number: 6789873
    Abstract: A maintenance system for an inkjet printhead is relocated to a position proximate the printhead to maintain the printhead. The relocation is performed by temporarily attaching the maintenance station to the media carrier of the inkjet printer. The maintenance station may be stowed in a docking station when it is not in use.
    Type: Grant
    Filed: December 5, 2002
    Date of Patent: September 14, 2004
    Assignee: Creo SRL
    Inventor: Andrew J. S. Booth
  • Publication number: 20040113964
    Abstract: In an inkjet printer there is a trade off between speed and quality. Higher speed can be achieved at the expense of quality as inkjet droplets deposited are distorted in shape and or placement position if the relative velocity between the inkjet nozzles and the printing medium is simply increased. The velocity above which distortion occurs is termed threshold velocity. A feed mechanism that varies the printing medium advance rate to allow printing at below threshold velocity while maintaining a high average feed rate is described. By advancing the printing medium at a periodically varying velocity, with the printing medium velocity lower than the threshold velocity, the problem is avoided.
    Type: Application
    Filed: September 23, 2003
    Publication date: June 17, 2004
    Applicant: Creo SRL
    Inventors: Andrew J. S. Booth, Carl A. Voth, Daniel Gelbart
  • Publication number: 20030234851
    Abstract: Inkjet printers are optimized for high printing throughput by dimensioning the media-carrying surface to have dimensions marginally larger than the size of one or more maximum-size standard print media sheets. The print media sheets used in conjunction with the media-carrying surface are selected from among standard sheets that exhibit certain geometrical properties and have sizes less than or equal to that of the maximum-size sheet. Drum-based and flatbed inkjet printers are provided with media-carrying surfaces dimensioned according to the invention.
    Type: Application
    Filed: January 21, 2003
    Publication date: December 25, 2003
    Inventors: Andrew J. S. Booth, Darcy Thomas Montgomery, Isabelle Fusey, David Scott Bruce
  • Patent number: 6652088
    Abstract: A method and apparatus are described for printing with an in-line de-gassed fluid from at least one individual printhead of an inkjet printing system onto a first sheet of receiver medium held on the printing media carrier of the inkjet printing system. The method comprises the steps of in-line de-gassing of fluid supplied to the printhead, and the moving of the printing media carrier at either a constant or a varying speed relative to the printhead, while simultaneously performing more than one of the actions of a. loading another sheet of receiver medium onto the printing media carrier, b. unloading a previously printed sheet of receiver medium from the printing media carrier and c. ejecting droplets of the fluid from the individual printhead onto either the first sheet of receiver medium or a sheet of receiver medium previously loaded onto the printing media carrier.
    Type: Grant
    Filed: May 13, 2002
    Date of Patent: November 25, 2003
    Assignee: Creo SrL
    Inventors: Bradley J. F. Palmer, Andrew J. S. Booth
  • Publication number: 20030210314
    Abstract: A method and apparatus are described for printing with an in-line de-gassed fluid from at least one individual printhead of an inkjet printing system onto a first sheet of receiver medium held on the printing media carrier of the inkjet printing system.
    Type: Application
    Filed: May 13, 2002
    Publication date: November 13, 2003
    Inventors: Bradley J. F. Palmer, Andrew J.S. Booth
  • Publication number: 20030128250
    Abstract: A maintenance system for an inkjet printhead is relocated to a position proximate the printhead to maintain the printhead. The relocation is performed by temporarily attaching the maintenance station to the media carrier of the inkjet printer. The maintenance station may be stowed in a docking station when it is not in use.
    Type: Application
    Filed: December 5, 2002
    Publication date: July 10, 2003
    Inventor: Andrew J. S. Booth
  • Publication number: 20030128249
    Abstract: A maintenance system for an inkjet printhead is located within a printing media carrier of an inkjet printer. By locating the maintenance system within the range over which the inkjet printhead assembly normally moves during full width printing, the printing media carrier may be moved to place the maintenance system in a position proximate the inkjet printhead assembly to be maintained. The printing media carrier may also be moved to place the maintenance system in a position where it may itself be serviced by a docking station.
    Type: Application
    Filed: December 5, 2002
    Publication date: July 10, 2003
    Inventor: Andrew J. S. Booth