Patents Assigned to Grafmark International Limited
  • Water based method for making color proof images on single substrate with blend of pigment for each color in photoresist
    Patent number: 4737436
    Abstract: A method of forming an image on a substrate is described which comprises blending a desired coloring pigment, adding the coloring pigment to a water soluble photoresist, coating the substrate with the pigmented photoresist, exposing the photoresist to actinic radiation to harden the parts of the photoresist occupying the desired image area, and removing with a water based solvent the unexposed photoresist.
    Type: Grant
    Filed: November 18, 1985
    Date of Patent: April 12, 1988
    Assignee: Grafmark International Limited
    Inventor: Colin G. Thompson