Winding – tensioning – or guiding – Unwinding and rewinding a machine convertible information... – Cartridge system
Patent
1992-03-30
1994-07-26
Stodola, Daniel P.
Winding, tensioning, or guiding
Unwinding and rewinding a machine convertible information...
Cartridge system
2423484, G03B 100
Patent
active
053321685
ABSTRACT:
A photographic film cassette has a spool around which photographic film is wound in a roll. A cassette shell rotatably contains the spool in a roll chamber. A flexible leader separator is disposed between the roll chamber and a film passageway. The separator is in contact with the outside of the roll of the film, and abuts upon a film leading end during rotation of the spool in the unwinding direction, so as to be flexed during usage. A film leader is separated from the roll, and is advanced outward through the passageway. In a preferred embodiment, a pair of guide members are disposed within the passageway, and are in contact with the film in transporting the film out of/into the cassette shell. Though the cassette shell is molded from non-crystalline resin, these guide members are molded from crystalline resin so as to prevent the film from being damaged. A coaxial pair of rollers may be disposed inward from the passage mouth for supporting an emulsion surface of the film while the film is transported out of/into the roll chamber.
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Hirose Masuhiko
Shibata Tadayoshi
Dunn Eileen A.
Fuji Photo Film Co. , Ltd.
Stodola Daniel P.
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