Cassette display window

Details Cassette display window Cassette display window

1986-04-14

1987-03-17

Demers, Arthur P.

Compositions

Organic luminescent material containing compositions

Synthetic resin containing

215365, 215366, 242199, 25230116, C08K 500, G03B 104, C09K 1102

Patent

active

046506012

ABSTRACT:
A magnetic tape cassette, consisting of opaque plastics material, contains, according to the invention, a display window with a scale impressed therein, consisting of transparent plastics material as well as one or more fluorescent plastics materials finely-divided therein, the ratio between the light emission surface area and the light absorption surface area of the display window being from 1:10 to 1:2000.

REFERENCES:
patent: 2937818 (1960-05-01), Zorn
patent: 3115417 (1983-12-01), Christensen
patent: 3116256 (1963-12-01), D'Alelio et al.
patent: 3718290 (1973-02-01), Wright
patent: 4486587 (1984-12-01), Seybold
patent: 4492648 (1985-01-01), Claussen et al.
patent: 4492778 (1985-01-01), Clausen et al.
patent: 4526705 (1985-07-01), Arndt et al.
patent: 4544490 (1985-10-01), Claussen et al.

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