Patents by Inventor Mark R. I. Chambers

Mark R. I. Chambers 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).

  • Laser absorbable photobleachable compositions
    Patent number: 6291143
    Abstract: A laser addressable thermal imaging element comprising a bleachable photothermal converting dye in association with a heat-sensitive imaging medium, and a photoreducing agent for said dye, said photoreducing agent bleaching said dye on laser address of the element. The imaging element may be in the form of a colorant transfer system, a peel-apart system, a phototackification system or a unimolecular thermal fragmentation system. Also provided is a method of crosslinking a resin by laser irradiation, which is useful in the production of colored images.
    Type: Grant
    Filed: October 16, 2000
    Date of Patent: September 18, 2001
    Assignee: Imation Corp.
    Inventors: Ranjan C. Patel, Robert J. D. Nairne, Andrew W. Mott, Mark R. I. Chambers, Dian E. Stevenson
  • Laser absorbable photobleachable compositions
    Patent number: 6171766
    Abstract: A laser addressable thermal imaging element comprising a bleachable photothermal converting dye in association with a heat-sensitive imaging medium, and a photoreducing agent for said dye, said photoreducing agent bleaching said dye on laser address of the element. The imaging element may be in the form of a colorant transfer system, a peel-apart system, a phototackification system or a unimolecular thermal fragmentation system. Also provided is a method of crosslinking a resin by leaser irradiation, which is useful in the production of colored images.
    Type: Grant
    Filed: May 20, 1999
    Date of Patent: January 9, 2001
    Assignee: Imation Corp.
    Inventors: Ranjan C. Patel, Robert J. D. Nairne, Andrew W. Mott, Mark R. I. Chambers, Dian E. Stevenson
  • Laser absorbable photobleachable compositions
    Patent number: 5945249
    Abstract: A laser addressable thermal imaging element comprising a bleachable photothermal converting dye in association with a heat-sensitive imaging medium, and a photoreducing agent for said dye, said photoreducing agent bleaching said dye on laser address of the element. The imaging element may be in the form of a colorant transfer system, a peel-apart system, a phototackification system or a unimolecular thermal fragmentation system. Also provided is a method of crosslinking a resin by leaser irradiation, which is useful in the production of colored images.
    Type: Grant
    Filed: April 22, 1997
    Date of Patent: August 31, 1999
    Assignee: Imation Corp.
    Inventors: Ranjan C. Patel, Andrew W. Mott, Robert J. D. Nairne, Mark R. I. Chambers, Dian E. Stevenson
  • Laser induced film transfer system
    Patent number: 5935758
    Abstract: A laser-induced thermal imaging system having a donor element and a receptor element. The donor element includes a substrate on which is coated transfer material that includes: a binder including a hydroxylic resin; a fluorocarbon additive; a cationic infrared absorbing dye; a dihydropyridine latent crosslinking agent; and a dispersible material. The receptor element comprises a texturized surface.
    Type: Grant
    Filed: April 22, 1997
    Date of Patent: August 10, 1999
    Assignee: Imation Corp.
    Inventors: Ranjan C. Patel, Mark R. I. Chambers, Dian E. Stevenson, Jonathan C. Vogel, Kevin Kidnie, John Souter, Gregory L. Zwaldo
  • Thermal bleaching of infrared dyes
    Patent number: 5843617
    Abstract: An imaging method is provided that includes a tetraarylpolymethine dye, and bleaching this dye by bringing the dye into contact with a 4-alkyl or 4-unsubstituted 1,4-dihydropyridine derivative.
    Type: Grant
    Filed: April 22, 1997
    Date of Patent: December 1, 1998
    Assignee: Minnesota Mining & Manufacturing Company
    Inventors: Ranjan C. Patel, Mark R. I. Chambers, Dian E. Stevenson, Robert J. D. Nairne, Gregory L. Zwaldo