Patents Assigned to Photocircuits Divison of Kollmorgen Corporation
  • Formation of metal images using reducible non-noble metal salts and light sensitive reducing agents
    Patent number: 3994727
    Abstract: Non-conductive real images are formed on substrates by depositing reducible metal salt compositions thereon from an aqueous acidic solution of pH 1.5-5 containing bromide ions and exposing the coated substrates to radiant energy to reduce the metal salt to metallic nuclei and to produce a real image of metal, which is intensified and built up by electroless metal deposition. The metal salt composition can either be selectively deposited and then exposed, or uniformly deposited and then selectively exposed, to produce the real image.
    Type: Grant
    Filed: July 11, 1974
    Date of Patent: November 30, 1976
    Assignee: Photocircuits Divison of Kollmorgen Corporation
    Inventors: Joseph Polichette, Edward J. Leech