Light-tight cassette

Details Light-tight cassette Light-tight cassette

1984-12-05

1986-07-01

Gellner, Michael L.

Special receptacle or package

For holding a machine readable recording medium

For holding a grooved phonograph disc

206409, 242 711, G03B 1726

Patent

active

045976589

ABSTRACT:
A light-tight cassette (1) suitable for holding a roll of web-like light-sensitive photographic material (2) wound around a core (6) and for dispensing the photographic material through a slit (19) provided in the cassette which is in the form of a box comprising a hollow shell portion (3) whose wall at three of its corners is at least partly and locally realized as a double wall and two end closure walls (4, 5) which are secured to the shell portion (3) by perforations provided in the outer wall of the double wall portions of the shell and cooperating detent fingers on the end closure walls. The inner wall of the double wall portions of the shell prevents light from intruding into the cassette through perforations in the outer shell wall and makes the cassette perfectly light-tight.

REFERENCES:
patent: 3551037 (1970-12-01), Pammer
patent: 3784001 (1974-01-01), Bushnell et al.
patent: 4272035 (1981-06-01), Sherman et al.
patent: 4291802 (1981-09-01), Buelens
patent: 4403845 (1983-09-01), Buelens et al.
Research Disclosure, No. 15033, Oct., 1976.
Research Disclosure, No. 16352, Nov., 1977.

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