Title:
PROJECTOR
Document Type and Number:
Japanese Patent JPS5327423
Kind Code:
A
Abstract:
A projector for motion picture film includes a servo motor which is controlled to advance film frame by frame to a projection station. A capstan on each side of the projection station is controlled to maintain film loops of substantially constant size and an associated reel motor delivers film to and takes film from each capstan. Each associated capstan and reel motor are controlled so as to maintain substantially constant tension on the film. A film guide defines the projection station and also includes provision for masking peripheral areas of each frame. Each capstan and an associated pinch roller are designed so as to eliminate creeping of film from between the two. A circuit for controlling the reel motors is arranged to permit fast winding of film directly from one reel to the other with an automatic braking feature.
Inventors:
SUTEFUAN ERU MAAKERU
BAATON EFU NOOTON
CHIYAARUZU BII SUMOORU
BAATON EFU NOOTON
CHIYAARUZU BII SUMOORU
Application Number:
JP10251577A
Publication Date:
March 14, 1978
Filing Date:
August 26, 1977
Export Citation:
Assignee:
AIRBORNE MFG CO
International Classes:
G03B1/54; G03B21/43; G03B21/00; G03B21/48; (IPC1-7): G03B21/00
Domestic Patent References:
| JPS5011650A | 1975-02-06 | |||
| JPS5016650A | 1975-02-21 |