Sheet material

Details Sheet material Sheet material

1982-11-19

1984-11-06

Lesmes, George F.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Including a second component containing structurally defined...

428327, 428412, 428484, 4284782, 428910, B44D 500

Patent

active

044812523

ABSTRACT:
A transparent sheet material which is suitable for projection on overhead projectors comprises coated onto a support a binder layer containing discrete particles of an organic polymer which has substantially the same refractive index as the binder, the polymer comprising from 0.5 to 30% by weight of the binder.
The coating gives a good key for typewritten characters produced by carbon ribbon or ink ribbon typewriters, for writing with e.g. ball-point pen, pencil, water or solvent based ink pens, Indian ink and inked rubber stamps.

REFERENCES:
patent: 3067352 (1962-12-01), Vodicka et al.
patent: 3264136 (1966-08-01), Hedge
patent: 3340089 (1967-09-01), Bougie
patent: 3706593 (1972-12-01), Miyano et al.
patent: 3720534 (1973-03-01), Macaulay et al.
patent: 3779800 (1973-12-01), Heiser
patent: 4133688 (1979-01-01), Sack
patent: 4211437 (1980-07-01), Myers et al.

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