The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 29, 1981
Filed:
Dec. 31, 1979
Victor F Chu, Wilmington, DE (US);
James Riesenfeld, Basking Ridge, NJ (US);
E. I. Du Pont de Nemours and Company, Wilmington, DE (US);
Abstract
Process for preparation of multicolor images on a single negative-working photosensitive layer which comprises imagewise exposing the layer through a transparency to form tacky image areas; toning the tacky image areas with a toner which becomes swollen or solubilized upon contact with the tacky areas; buffing or rubbing the toned image areas until glossy; and repeating the exposing, toning and buffing or rubbing using a different image-bearing transparency and appropriate toner. The process is useful in preparing multicolor proofs, e.g., maps, textile and wall covering design proofs and samples, etc.