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:
Apr. 04, 1989
Filed:
Nov. 04, 1987
Graciela B Blanchet-Fincher, Wilmington, DE (US);
Curtis R Fincher, Jr, Wilmington, DE (US);
Lawrence K-F. Cheung, Hockessin, DE (US);
Rolf Dessauer, Greenville, DE (US);
Catharine E Looney, Centreville, DE (US);
E. I. Du Pont De Nemours and Company, Wilmington, DE (US);
Abstract
Photohardenable electrostatic master comprising an electrically conductive substrate, e.g., aluminized polyethylene terephthalate, bearing a layer of a photopolymer comprising an organic polymeric binder, compound having at least one ethylenically unsaturated group, photoinitiator, an aromatic amino compound, as defined, and an acid, e.g., p-toluene sulfonic acid, or an oxidized substituted aromatic amino compound. The photohardenable electrostatic master having improved charge decay and backtransfer is used for electrostatic proofing, etc.