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US 5,210,001 AGranted
Process for the preparation of images on tonable, light-sensitive layers
AssigneeE. I. Du Pont de Nemours and Company
InventorsHelmut Frohlich, Michael Fryd
Life of this patent
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Abstract
A process for preparing images on a tonable, light-sensitive layer in which a transfer layer containing a toner and a core/shell polymer as a binder is used. The core polymer has a glass transition temperature above 50.degree. C. and the shell polymer has a glass transition temperature below 40.degree. C. Such transfer layers are used in proofing processes for high quality printing.
Claims7
A process for preparing images on tonable, light-sensitive layers which comprises:
- (a) imagewise exposing a light-sensitive layer so that tacky and non-tacky areas are produced;
- (b) contacting the exposed layer with a light-insensitive transfer layer on a support, said transfer layer having:
- (i) a binder containing at least one core/shell polymer wherein the core comprises 5-95 percent by weight of the polymer and has a glass transition temperature above 50.degree. C. and the shell comprises 5-95 percent by weight of a polymer and has a glass transition temperature below 40.degree. C.;
- (ii) at least one toner;
- and
- (c) separating the exposed layer from the transfer layer.
3 more elements
Dependencies are inferred from the claim text.