Patents by Inventor David W. Pinkernell

David W. Pinkernell 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: 6733110
    Abstract: A printing mechanism comprises a print engine that prints an image on a first side of a photographic print media, a laminator that laminates the first side of said photographic print media having said image printed thereon, and a duplexer that returns said photographic print media to said print engine for printing on a second side of said photographic print media.
    Type: Grant
    Filed: March 10, 2003
    Date of Patent: May 11, 2004
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: David W. Pinkernell, Steve O. Rasmussen, Vance M. Stephens
  • Patent number: 6460969
    Abstract: A wet-dye hard copy apparatus includes a scanning carriage selectively movable along a scan axis and a plurality of ink-jet writing instruments on the carriage for printing on adjacent print media transported along an orthogonal axis. The writing instruments are offset a predetermined distance in the direction of medial travel to increase throughput and to allow simultaneous multiple page printing.
    Type: Grant
    Filed: March 28, 2001
    Date of Patent: October 8, 2002
    Assignee: Hewlett-Packard Company
    Inventor: David W. Pinkernell
  • Patent number: 6260947
    Abstract: A wet-dye hard copy apparatus includes a scanning carriage selectively movable along a scan axis and a plurality of ink-jet writing instruments on the carriage for printing on adjacent print media transported along an orthogonal axis. The writing instruments are offset a predetermined distance in the direction of media travel to increase throughput and to allow simultaneous multiple page printing.
    Type: Grant
    Filed: May 14, 1999
    Date of Patent: July 17, 2001
    Assignee: Hewlett-Packard Company
    Inventor: David W. Pinkernell
  • Patent number: 4872026
    Abstract: A novel ink-jet printer (10) is provided. The print provides both paper supply tray (12) and paper collection tray (18) in the front (14) of the printer for ease of paper handling and reduced footprint. The paper collection tray is provided with a pair of opposed output rails (22) which support a sheet of paper (16c) during printing to permit ink on a sheet of paper (16b) previously printed to dry. A paper handling mechanism is provided which eliminates a sheet pickup motor and associated elements. The paper handling mechanism is configured to pick off a sheet of paper from a stack of input paper, bring it around paper drive rollers (24) onto a platen (26), where the printing operation, employing a printhead cartridge (32), occurs. The printer further includes a service station (230) for clearing clogged nozzles in the printhead (33) and removing bubbles therefrom, for covering the nozzles with a protective cap (266), and for wiping contaminants off the nozzles.
    Type: Grant
    Filed: January 28, 1988
    Date of Patent: October 3, 1989
    Assignee: Hewlett-Packard Company
    Inventors: Steve O. Rasmussen, Larry A. Jackson, John D. Rhodes, David W. Pinkernell, J. Paul Harmon, Kevin L. Moon, William R. Huseby
  • Patent number: 4843338
    Abstract: Several problems of alignment associated with ink-jet printers are alleviated by four aspects. In the first, a reverse bow (B) in the paper (12) is created for printing on single sheets of paper. The reverse bow, which in the transverse axis of the paper, forces the paper flat against the platen (14) by using the paper's own stiffness.In the second aspect, the paper and the carriage (30) are referenced to the same part (the carriage guide (10)). In this configuration, the paper is urged against the underside of the carriage guide off of drive rollers (18), through the reverse bow, and onto the platen, where it is printed. The carriage is referenced to the carriage guide through a slider bump by means of a carriage shaft and gravity.The carraige guide comprises stiff thin sheet metal, which is closely-toleranced and has well-controlled dimensions. Thus, this part is good to reference to, rather than molded-in parts, which are not stiff enough at the required thickness.
    Type: Grant
    Filed: October 23, 1987
    Date of Patent: June 27, 1989
    Assignee: Hewlett-Packard Company
    Inventors: Steve O. Rasmussen, Larry A. Jackson, David W. Pinkernell
  • Patent number: 4728963
    Abstract: A novel ink-jet printer (10) is provided. The printer provides both paper supply tray (12) and paper collection tray (18) in the front (14) of the printer for ease of paper handling and reduced footprint. The paper collection tray is provided with a pair of opposed output rails (22) which support a sheet of paper (16c) during printing to permit ink on a sheet of paper (16b) previously printed to dry.A paper handling mechanism is provided which eliminates a sheet pickup motor and associated elements. The paper handling mechanism is configured to pick off a sheet of paper from a stack of input paper, bring it around paper drive rollers (24) onto a platen (26), where the printing operation, employing a printhead cartridge (32) occurs.The resulting printer is easy to manufacture, has reduced complexity by eliminating components in the paper drive mechanism and is lower in cost.
    Type: Grant
    Filed: March 11, 1987
    Date of Patent: March 1, 1988
    Assignee: Hewlett-Packard Company
    Inventors: Steve O. Rasmussen, Larry A. Jackson, John D. Rhodes, David W. Pinkernell, J. Paul Harmon
  • Patent number: RE37671
    Abstract: A printhead cartridge and carriage assembly (10) is provided comprising: a carriage (12); a snap-spring (62) for securing a printing cartridge (14) in postion on the carriage; and an interconnect strip (16) for supplying electrical signals to the cartridge, including a force loading spring pad (24) for urging a portion of the interconnect strip against a portion of the cartridge. The cartridge has top (32), bottom (34), sides (36, 38), front (40) and rear (42) surfaces and includes a printhead (44) on the bottom surface, an electrical contact strip (46) on the back surface connected to the printhead, referencing pads (56) on the side surface, and a lip (64) on the back surface for accepting the snap-spring. Referencing surface (60) are provided for receiving the referencing pads on the cartridge. The spring pad urges the interconnect strip against the electrical contact of the cartridge.
    Type: Grant
    Filed: December 21, 1998
    Date of Patent: April 30, 2002
    Assignee: Hewlett-Packard Company
    Inventors: David W. Pinkernell, Larry A. Jackson, J. Paul Harmon, Steve O. Rasmussen