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:
Oct. 25, 1977
Filed:
May. 07, 1976
Joseph Yung-Chang Chu, Fairport, NY (US);
Richard Louis Schank, Webster, NY (US);
Xerox Corporation, Stamford, CT (US);
Abstract
Microfilm structures of improved contrast are provided by coating a suitable transparent film substrate with an intermediate layer of a silicone elastomer which is abhesive to ink, coating said silicone with a surface layer of a photosensitive polymer which when exposed to activating electromagnetic radiation cross-links and chemically attaches to said silicone elastomer to form oleophilic ink accepting image areas, imagewise exposing said photosensitive polymer, removing the non-exposed, light sensitive polymer to form non-imaged areas of the abhesive silicone elastomer, and selectively inking the oleophilic image areas to form an imaged microfilm structure of improved image density and contrast.