Lightproof cassette

Details Lightproof cassette Lightproof cassette

1989-05-01

1989-12-26

Price, William

Winding, tensioning, or guiding

Coil holder or support

Spool or core

206409, 354275, B65H 1600, B65D 8567

Patent

active

048892920

ABSTRACT:
The present invention relates to a light-tight roll-film cassette for holding and dispensing light sensitive material, having lips forming a dispensing slot for the material drawn from the roll, these lips being mechanically enforced by ribs. The cassette has the advantage of improved light-tightness at the dispensing slot without increasing the dispensing forces.

REFERENCES:
patent: 3612424 (1971-10-01), Friedel
patent: 4239164 (1980-12-01), Barnsbee et al.
patent: 4291802 (1981-09-01), Buelens
patent: 4597658 (1986-07-01), Buelen et al.
patent: 4706904 (1987-11-01), Raymond
patent: 4787513 (1988-11-01), Aubk et al.
patent: 4821876 (1989-04-01), Naito et al.
patent: 4832197 (1989-05-01), Hara

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