Winding – tensioning – or guiding – Coil holder or support – Spool or core
Patent
1990-11-27
1993-02-23
Stodola, Daniel P.
Winding, tensioning, or guiding
Coil holder or support
Spool or core
354275, B65H 7528, B65H 1610, B65H 2026, G03B 100
Patent
active
051883066
ABSTRACT:
A self-advancing film cassette is provided with an auxiliary rotation transmittance structure for reliably transmitting rotation of a spool to the inner turns of a roll of film in order to prevent reverse rotation of the film caused by loosening of the inner turns of the roll of film or inferior bending rigidity. According to one preferred embodiment, a step portion for pushing the bending line of a film trailer is formed on a slit, permitting the end of the film trailer to be inserted therein. In another preferred embodiment, a spool is provided with a resilient member or flap member for urging the inner turns of the roll of film toward its outer turns. The film trailer has increased bending rigidity by having an embossing treatment, applied thereto, or by attaching a skirt thereto.
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Kataoka Hideaki
Mizuno Kazunori
Okutsu Kazuo
Takahashi Koichi
Fuji Photo Film Co. , Ltd.
Nguyen John Q.
Stodola Daniel P.
LandOfFree
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