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US 4,232,108 AGranted
Marking transfer sheets
AssigneeE. I. Du Pont de Nemours and Company
InventorRolf Dessauer
Life of this patent
Estimating the term…
Abstract
A marking transfer sheet comprising an imaging layer of pigment, binder and a color-forming, radiation-sensitive component on a carrier film and a process for its use comprising exposing the imaging layer to a pattern of radiation to form a mark, heating the imaging layer until adhesive, and contacting the imaging layer with a support more adherent to the imaging layer than the carrier film; and optionally separating the carrier film from the imaging layer.
Claims9
A marking transfer sheet comprising an imaging layer on a carrier support, the imaging layer comprising
- (a) a radiation-sensitive composition which, upon exposure to radiation, is capable of forming a colored substance that can absorb at least a portion of the wavelength of light in the visible spectrum, the radiation-sensitive composition being present in an amount sufficient to produce, upon exposure to radiation, a detectable difference in diffuse reflectance density between exposed and unexposed areas,
- (b) pigment capable of diffusely reflecting the wavelengths of light absorbed by the colored substance, the pigment being present in a density of about from 0.05 to 0.34 gram per square foot, and
- (c) radiation-transmissive, colorless, polymeric, film-forming, thermoplastic binder.
Dependencies are inferred from the claim text.