Waterproof photographic paper
US4384040A · kind A · utility
30Cited by
8References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 12, 1981 |
| Grant date | May 17, 1983 |
| Priority date | — |
| Expiry date | Jun 12, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/3179
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A waterproof paper support having a photographic emulsion which is coated on both sides with a waterproof synthetic resin. The coating which carries the photographic emulsion preferably is a prepolymer of an unsaturated polyester resin which can be polymerized by electron bombardment. This coating contains at least 20% by weight of a white light-reflecting pigment having a particle size in excess of 0.1 micron.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.