| 摘要 |
In a film cassette, a spool core (23) is supported for rotation in an unwinding direction (U) to thrust a leader section (35) of a film roll (33) coiled about the spool core to the exterior of the cassette and in a winding direction (W) to return the leader to the interior of the cassette. A pair of flanges (41, 43) are arranged in spaced relation along the spool core (23) to radially confine the leader (35). The flanges (41, 43) are adapted to be flexed apart to permit the leader (35) to readily escape the confinement of the flanges when the spool core (23) is rotated in the unwinding direction (U). According to the invention, the leader (35) has respective edge portions (53', 55') for flexing the flanges (41, 43) apart in succession when the spool core (23) is rotated in the unwinding direction (U), whereby the leader can more easily overcome any resistance the flanges may present to movement of the leader outwardly of the flanges. <IMAGE> |
