Photographic film cassette with dust collecting ridges

Details Photographic film cassette with dust collecting ridges Photographic film cassette with dust collecting ridges

1991-12-27

1993-12-21

Stodola, Daniel P.

Winding, tensioning, or guiding

Coil holder or support

Spool or core

354275, G03B 1726

Patent

active

052715760

ABSTRACT:
A plurality of grooves are formed on upper and lower inside surfaces of a film passageway of a cassette shell. The grooves receive dust tending to adhere to the photographic film, and prevent the dust from entering a film chamber of the cassette shell in order to protect surfaces of photographic film from scratches.

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