Film Gate Components
Issue: 08/2012
Sprockets are designed to transport the lm continuously. The teeth of the sprocket
engage the perforations of the lm. Both sprockets provide for equal loops before and
after the lm gate.
2
1
3
4
5
2
1
3
6
5
Feed sprocket / bottom or holdback sprocket
Á Pad shoe with handle
 Ring nut with spring
à Film stripper
Ä Guide roller
Å Hand wheel
» The feed sprocket (left gure) pulls the lm from the take-off friction or platter to the
lm gate.
» The bottom sprocket (right gure) pulls the lm out of the sound head and feeds it
to the take-up friction or platter.
» The pad shoe holds the lm on the sprocket.
» The lm stripper prevents broken lm from being wound up around the sprocket.
» With the handle you can open the pad shoe to thread the lm.
X
Z Changing a constant speed sprocket and a pad shoe, see chapter 6.4.6.
Z Adjusting the tension of the pad shoe spring, see chapter 6.4.7.
Z Adjusting the distance between the pad shoe and the sprocket, see chapter 6.4.8.
Z Adjusting the lm break sensor, see chapter 6.4.9.
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