Field Service Manual December 2003
Page 72 of 276
Rotation of the drum clockwise.
Because the position of the beginning of the film is higher than the unload table and
the upper roll gives us a driving power, the film is pushed up to the table when the
drum is rotated. This happens with a relative high speed.
During this movement the end of the films is dragged along the unload bottom plate.
As this plate is made from a special material, no scratches are made on the surface of
the medium.
As long as the film is kept between the upper roll and the drum, the friction force
between the transport mechanism and the underside of the film is lower than the
friction force made by the upper roll. The speed of the film depends on the speed that
the drum is spinning.
From the moment that the film is no longer between the upper roll and the drum, the
largest force is the friction force of the transport mechanism. So the speed of the film
now becomes the speed of the transport mechanism.
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