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B SIRVEN
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B SIRVEN
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Application grantedgrantedCritical
Publication of FR636237ApublicationCriticalpatent/FR636237A/fr
G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
G03F5/00—Screening processes; Screens therefor
G03F5/02—Screening processes; Screens therefor by projection methods
G03F5/06—Screening processes; Screens therefor by projection methods changing the diaphragm effect
Landscapes
Physics & Mathematics
(AREA)
General Physics & Mathematics
(AREA)
Diaphragms For Cameras
(AREA)
FR636237D1927-07-051927-06-18Procédé et dispositif pour l'obtention en photomécanique de clichés négatifs tramés à blancs purs
ExpiredFR636237A
(fr)
Herstellung gerasterter Negative, bei welcher waehrend der Belichtung der photo-graphischen Schicht teils eine kleinere, teils eine groessere Blendenoeffnung wirksam ist
Cliché applicable notamment à l'impression par la lumière des soustitres des films cinématographiques et appareil pour l'obtention de ce cliché
Perfectionnements au procédé et à l'appareil de prises de vues photographiques encouleurs et ou à la projection de ces vues pour la cinématographie