Thermographic recording material

Abstract

Abstract A photothermographic method of reproducing an original bearing an image of material absorbing visible or infrared radiation and converting the same into heat in which the original is arranged with its image material in heat conductive relation with a recording layer containing a normally solvent soluble material adapted to react with a cross-linking agent and would be thereby rendered less soluble, a compound decomposing when heated to yield a cross-linking agent for said cross-linkable material and uniformly distributed therethrough a finely divided substance absorbing visible or infrared radiation and converting the same to heat, and while the original and layer are thus arranged one of them is uniformly exposed for a time not in excess of 10 2 seconds to light or infrared radiation sufficiently intense to decompose the compound in the areas of the layer corresponding to the nonimage areas of the original whereby such nonimage areas undergo a loss in solubility whereas the image areas remain relatively soluble. Reflectographic exposure with the radiation impinged upon the recording layer is preferred, with the layer containing a sufficient amount of the finely divided material to impart thereto an optical density of 0.2-0.8.

Inventors

• 👤 Gerard Albert Delzenne
• 👤 Eric Maria Brinckman

Bibliographic Details