Photography – With film drive – Having significant electronic circuit detail
Patent
1995-05-18
1997-03-25
Metjahic, Safet
Photography
With film drive
Having significant electronic circuit detail
396410, 396284, G03B 118, G03B 100
Patent
active
056149719
ABSTRACT:
A mechanism and method used by photographic systems to determine when film has been completely rewound into a film cartridge so that other operations involving the film cartridge can occur, for example, aligning a visual indicator with an appropriate visual exposure icon visible on exterior of a film cartridge. Preferably, the mechanism and method of the present invention are for use in photographic systems that accept film cartridges having a radial bar code contained on a data disk and means for aligning a visual indicator with an appropriate visual icon. The mechanism and method are characterized in that during rewinding of the film, sensing the leading edge of the film causes the number of film spool rotations to be counted. After a predetermined number of rotations have occurred, it is presumed that the film is completely rewound on the film spool and, as a result, a predetermined parking sequence can be initiated.
REFERENCES:
patent: 4373796 (1983-02-01), Matsuura et al.
patent: 4540261 (1985-09-01), Matsumoto et al.
patent: 4707095 (1987-11-01), Nakano et al.
patent: 4994833 (1991-02-01), Cocca
patent: 5030978 (1991-07-01), Stoneham et al.
patent: 5032854 (1991-07-01), Smart et al.
patent: 5321455 (1994-06-01), Cocca
patent: 5398090 (1995-03-01), Ezawa
Chapik Daniel
Eastman Kodak Company
Howley David A.
Metjahic Safet
Snee, III Charles E.
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