| 摘要 |
<p>The film projector has a projection lamp (2) and a number of lenses (3) positioned above the film. The latter is fed between a supply cassette (9) and a reception cassette (10) attached to opposite sides of the projector housing (1). The edges of the film are guided between two respective slots (13) formed in two facing cheeks either side of the imaging window. The film is transported by a co-operating pair of drive rollers (14, 15) one of which is coupled to a reversible motor with a clutch and an electromagnetic brake. The driven roller (14) is of rubber, while the cooperating roller (15) is of metal.</p> |
