Antistatic backing for photographic roll film
US5360701A · kind A · utility
43Cited by
8References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 19, 1993 |
| Grant date | Nov 1, 1994 |
| Priority date | — |
| Expiry date | Apr 19, 2013 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB32B2323/04
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
There is provided a roll film assembly which comprises a length of photographic film having attached to each end thereof a length of backing paper, the film and the backing paper being wound together on a flanged spool, the backing paper being a laminate of paper and polyethylene which comprises as an opaqueing agent a layer of polyethylene which comprises from 7 to 10% by weight of carbon black particles of which from 20 to 100% by weight are conductive carbon particles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.