Polyolefin base display material with tone enhancing layer
US6352822B1 · kind B1 · utility
15Cited by
12References
46Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 6, 2000 |
| Grant date | Mar 5, 2002 |
| Priority date | — |
| Expiry date | Dec 6, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C2200/35
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The invention relates to a display material comprising a base said base comprising a polyolefin sheet comprising at least one voided polyolefin diffusion layer, at least one topside photosensitive silver halide layer on the topside of said base and at least one bottom side photosensitive layer on the bottom side of said base, below said bottom side emulsion a tone enhancing layer and below said tone enhancing layer an antihalation layer wherein said display material has a light transmission of between 35 and 60 percent in the developed Dmin areas of the display material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.