Patent · US Expired

Waterproof photographic paper support

US4645736A · kind A · utility

23Cited by

12References

33Claims

0Family size

Assignee

Felix Schoeller GmbH & Co. KG · DE

Inventors

Reiner Anthonsen · Bramsche, DE
Wieland Sack · Bissendorf, DE
Heinz Trentmann · Osnabrück, DE
Hans-Georg Wollmer · Osnabrück, DE

Key dates

Filing date	Oct 4, 1985
Grant date	Feb 24, 1987
Priority date	—
Expiry date	Oct 4, 2005

Classification

Technology area (CPC D)Textiles; Paper
CPC primaryD21H25/06
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

A multilayer, waterproof photographic paper support includes a paper which is coated with a layer of radiation hardened varnish or varnish color and a barrier layer is positioned between the paper and varnish layer. The barrier layer comprises a polymer, film-forming material, produced either by extrusion coating, a coating of an aqueous solution or dispersion.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.