Day/night photographic display material with biaxially oriented polyolefin sheet
US6030756A · kind A · utility
25Cited by
18References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 17, 1998 |
| Grant date | Feb 29, 2000 |
| Priority date | — |
| Expiry date | Sep 17, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S430/151
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
The invention relates to an photographic element comprising a transparent polymer sheet, at least one layer of biaxially oriented polyolefin sheet and at least one image layer, wherein said polymer sheet has a stiffness of between 20 and 100 millinewtons said biaxially oriented polyolefin sheet has a spectral transmission between 35% and 90%, said biaxially oriented polyolefin sheet has a reflection density less than 65%.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.