Antistatic backing for photographic roll film
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United States of America Patent
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-
Nov 1, 1994
Issued Date -
N/A
app pub date -
Apr 19, 1993
filing date -
Jan 5, 1991
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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