Multilayer photographic support material

US4729945A · kind A · utility

Assignee

• Felix Schoeller, Jr. · DE

Inventors

• Reiner Anthonsen · Bramsche, DE
• Wieland Sack · Bissendorf, DE

Key dates

• Filing date: Sep 23, 1986
• Grant date: Mar 8, 1988
• Expiry date: Sep 23, 2006

Classification

• Technology area (CPC G): Physics
• CPC primary: G03C1/79
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

A method for making a support paper for a photographic emulsion having a smooth unmottled surface which comprises applying to the top side of a photographic base paper pigmented monomeric liquid, acrylic coating mixture, hardening the mixture by bombarding with a beam of electrons at room temperature and extruding a pigmented polyolefin film over the hardened mixture to serve as a barrier against migration of unpolymerized monomer into the emulsion. The hardened acrylic resin is preferably oxidized by corona treatment to facilitate adhesion of the polyolefin.