FR1007179A - Procédé d'entraînement sans glissement des bandes perforées par denture circulaire et application aux tireuses de films cinématographiques
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Procédé d'entraînement sans glissement des bandes perforées par denture circulaire et application aux tireuses de films cinématographiques
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G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
G03B27/00—Photographic printing apparatus
G03B27/32—Projection printing apparatus, e.g. enlarger, copying camera
G03B27/46—Projection printing apparatus, e.g. enlarger, copying camera for automatic sequential copying of different originals, e.g. enlargers, roll film printers
G03B27/475—Projection printing apparatus, e.g. enlarger, copying camera for automatic sequential copying of different originals, e.g. enlargers, roll film printers copying cinematographic film
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FR1007179D1948-03-031948-03-03Procédé d'entraînement sans glissement des bandes perforées par denture circulaire et application aux tireuses de films cinématographiques
ExpiredFR1007179A
(fr)
Perfectionnements aux procédés de reproduction photo-mécanique des images par clichés trames et nouveaux produits industriels obtenus en application de ces perfectionnements
Obturateur à rideaux, pour appareil photographique, à affichage unique et progressif pour toute la gamme des vitesses s'étendant des instantanés rapides aux vitesseslentes