Patent · US Expired

Photographic paper base with improved durability

US4352861A · kind A · utility

23Cited by

6References

6Claims

0Family size

Assignee

Felix Schoeller GmbH & Co. KG · DE

Inventors

Walter von Meer · Bad Iburg, DE
Uwe Jensen · Osnabrück, DE
Reiner Anthonsen · Bramsche, DE

Key dates

Filing date	Oct 8, 1980
Grant date	Oct 5, 1982
Priority date	—
Expiry date	Oct 8, 2000

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/31906
WIPO fieldSurface technology, coating
WIPO sectorChemistry

Abstract

A photographic paper base comprises a base paper which bears two resin layers arranged one on top of the other on at least one side. The side of the paper which is destined to receive the photographic layer is coated with two resin layers lying one on top of the other, i.e., a first layer lying on the paper and the second layer arranged to contact the photographic layer. Only the second layer contains stabilizers and/or antioxidants, these being preferably in the range 0.03 to 2.0% by weight.

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