Winding – tensioning – or guiding – Coil holder or support – Spool or core
Patent
1992-06-11
1994-05-03
Jillions, John M.
Winding, tensioning, or guiding
Coil holder or support
Spool or core
354275, 156293, 156294, G03B 1726
Patent
active
053080092
ABSTRACT:
A photographic film cassette has a spool with photographic film wound thereon. A pair of velvet ribbons is attached to inside faces of a passageway of the cassette shell so as to prevent light from entering the cassette shell through the passageway. Rotation of the spool in an unwinding direction causes a leader of the photographic film to advance outward from the passageway between the pair of ribbons. The ribbons are of warp pile fabric woven from warp threads, weft threads and warp pile threads. The ribbons are woven in a structure such that the weft threads are intersected by the warp threads in plain weave, and that warp pile threads are pressed between the warp threads to slang in the direction of the weft threads. The ribbons are oriented so as to slant the pile threads toward an outside of the cassette shell. In a preferred embodiment, a light-trapping ribbon web is woven such that it has a width corresponding to a width of the inside faces of the passageway for attaching ribbons. Ribbons are cut from the ribbon web at a length corresponding to a lateral range of the passageway.
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Fuji Photo Film Co. , Ltd.
Jillions John M.
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