| 摘要 |
A film transport apparatus for selectively advancing a film out of, or rewinding a film onto, a spool shaft of a cartridge. The apparatus has: a) a rotatable member which engages the spool shaft; b) a first drive assembly for pulling on film remote from the cartridge to assist in advancing the film out of the cartridge; c) a transmission assembly to thrust film from the spool shaft and rewind it onto the spool shaft, comprising: a rewind gear positioned to rewind the rotatable member, and a thrust gear positioned to advance the rotatable member through a directional clutch such that when film is pulled from the spool shaft by the first drive assembly the thrust gear will disengage from the rotatable member; and a gear train which selectively engages the thrust or rewind gear; and d) a drive to drive the first drive assembly and the gear train.
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