Device for clamping and releasing film material and operation of said device
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United States of America Patent
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Mar 19, 1996
Grant Date -
N/A
app pub date -
Apr 22, 1993
filing date -
Jul 19, 1991
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In order to improve a device for clamping and unclamping film material (3) on and from a stationary holder (12) in which the film material is taken by a transport device (4 to 8) through the holder (12) especially from an inlet to an outlet slot, and held in the holder (12) during exposure, in such a way that the film material can be reliably positioned in the holder (12), it is proposed that a positioning unit (19) be fitted which confers upon the film material (3) a tendency to move against the direction of transport when it is clamped.
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