Patent
1991-07-01
1992-12-15
Gellner, Michael L.
G03B 118
Patent
active
051721481
ABSTRACT:
A film winding apparatus, using a film cartridge constructed so that film is fed from the cartridge by rotating a film cartridge spool, comprises a film cartridge spool drive unit for driving the film cartridge spool, a winding spool drive unit for driving a film winding spool, a film tip position detector for detecting that a tip of the film fed from the film cartridge has arrived at the winding spool, or a predetermined distance from the winding spool, and outputting a film tip position signal, and control device for receiving the film tip position signal. The control device controls the film cartridge spool drive unit and the winding spool drive unit so that after the control device receives the film tip position signal, a speed ratio VF/VS is provided in which the film feed speed VF is slower than the circumferential speed VS of the winding spool, and so that before the control device receives the film tip position signal, a larger speed ratio is provided.
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Gellner Michael L.
Han J. K.
Nikon Corporation
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