Photography – Disposable or recyclable camera
Patent
1999-04-01
2000-12-26
Gray, David M.
Photography
Disposable or recyclable camera
396399, 396440, G03B 1702
Patent
active
061671975
ABSTRACT:
A camera comprising a main body part with spaced film supply and film take-up chambers and an exposure opening located between the film supply and take-up chambers and configured for exposing an unexposed film frame, a metering pawl for engaging a film perforation during exposure of the film frame at the exposure opening, and a film winding take-up for moving an exposed frame in a film take-up direction from the exposure opening to the film take-up chamber, is characterized in that the metering pawl is supported to engage a film perforation between the exposure opening and the film supply chamber during exposure of a film frame at the exposure opening, and a tensioning spring urges the metering pawl substantially opposite to the film take-up direction in order to tension a film frame at the exposure opening. Since the film length between the metering pawl and the film winding take-up is longitudinally tensioned, the film frame is similarly tensioned at the exposure opening. Thus, the film tensioning positively acts to prevent frame shift during exposure of the film frame.
REFERENCES:
patent: 3696723 (1972-10-01), Ernisse
patent: 3768389 (1973-10-01), Ettischer et al.
patent: 3999199 (1976-12-01), Beach
patent: 5708888 (1998-01-01), Nishizawa
Eastman Kodak Company
Fields Roger A.
Gray David M.
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