Winding – tensioning – or guiding – Unwinding and rewinding a machine convertible information... – Cartridge system
Patent
1995-12-27
1998-04-21
Stodola, Daniel P.
Winding, tensioning, or guiding
Unwinding and rewinding a machine convertible information...
Cartridge system
2423484, 242357, 396512, 396514, G03C 300
Patent
active
057409773
ABSTRACT:
A photo film cassette has photo film (12) contained in a roll form. The photo film is advanced to an outside of a cassette shell (11) when a spool core (26) is rotated in an unwinding direction. Two flexible flanges (27, 28) are secured to the spool core, and render edges of the photo film neat. Bearing holes (27a, 28a) are formed respectively in a middle of the flanges, for insertion of the spool core. The first bearing hole (27a) in the first flange (27) has a first diameter .phi.H. A first stopper ring (67) is associated with the first flange, for preventing the first flange from being moved away from the photo film. The first stopper ring has a second diameter. A receiving region lies between the first stopper ring and a second stopper ring (65), contacted on the edge of the first bearing hole in the first flange supported in the receiving region, for preventing the first flange from being moved toward the photo film. A circumference of the spool core includes at least first and second sections (.theta.1, .theta.3). The second stopper ring includes a first sector portion (65a), disposed in the first section (.theta.1) about the spool core, and having a third diameter .phi.d meeting .phi.d>.phi.H. A second sector portion (65b) is disposed in the second section (.theta.3) about the spool core, and has a fourth diameter .phi.D meeting .phi.D>.phi.d. The fourth diameter .phi.D is smaller than the second diameter of the first stopper ring.
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Fuji Photo Film Co. , Ltd.
Rivera William A.
Stodola Daniel P.
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