Winding – tensioning – or guiding – Strand tensioning device – Tortuous course
Patent
1984-08-06
1985-11-12
Christian, Leonard D.
Winding, tensioning, or guiding
Strand tensioning device
Tortuous course
352 72, G03B 104, G11B 1532
Patent
active
045523223
ABSTRACT:
A light sensitive, heat developable film is stored in a cassette which includes a sliding film carrier bracket for transporting the film into and out of the cassette housing. Each cassette housing encloses a supply spool, a take-up spool, the light sensitive film, the film carrier bracket mechanism and a drive means for propelling the film carrier bracket in and out of the cassette housing. A door is slidably attached to the front of the housing to shield the film from ambient light when the cassette is not in use. When the cassette is placed into a recording machine the supply and take-up spools are engaged by motors capable of driving the spools forward or backward. At the beginning of operation an internal drive motor propels the film carrier bracket into contact with the inside of the door which releases an internal door lock. An external lead screw then withdraws the door upwardly. After the door is fully open the film carrier bracket is advanced out of the housing bringing the film into contact with the read/write and development elements internal to the recording machine. When the recording or playback operation is over, the internal drive motor returns the film and the carrier bracket to the inside of the housing after which the door is closed. The cassette is especially useful in the context of light sensitive, heat developable film which is capable of storing high density data supplied by a holographic scanning mechanism.
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Christian Leonard D.
LASERstore, Ltd.
Woodbridge Richard C.
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