Patents by Inventor Isidre Rosello Martos

Isidre Rosello Martos 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).

  • Calibration technique for test patterns from multiple color inkjet printheads
    Patent number: 6290320
    Abstract: Light emitted from an obliquely angled LED source is directed by peripheral light tube walls which extend vertically toward media displaying printed indicia. The emitted light provides an illuminated area surrounding the printed indicia, while the light tube walls shield the printed indicia from excessive external light, so that a sensor measures the intensity of emitted light directly reflected from the media through a protective aperture.
    Type: Grant
    Filed: September 28, 1999
    Date of Patent: September 18, 2001
    Assignee: Hewlett-Packard Company
    Inventors: Robert W. Beauchamp, Isidre Rosello Martos, Josep Tarradas
  • Optical path optimization for light transmission and reflection in a carriage-mounted inkjet printer sensor
    Patent number: 5975674
    Abstract: Light emitted from an obliquely angled LED source is directed by peripheral light tube walls which extend vertically toward media displaying printed indicia. The emitted light provides an illuminated area surrounding the printed indicia, while the light tube walls shield the printed indicia from excessive external light, so that a sensor measures the intensity of emitted light directly reflected from the media through a protective aperture.
    Type: Grant
    Filed: October 31, 1995
    Date of Patent: November 2, 1999
    Assignee: Hewlett-Packard Company
    Inventors: Robert W. Beauchamp, Isidre Rosello Martos, Josep Tarradas