GB532325A - A method of eliminating grain in making photographic enlargements - Google Patents

A method of eliminating grain in making photographic enlargements

Info

Publication number
GB532325A
GB532325A GB21014/39A GB2101439A GB532325A GB 532325 A GB532325 A GB 532325A GB 21014/39 A GB21014/39 A GB 21014/39A GB 2101439 A GB2101439 A GB 2101439A GB 532325 A GB532325 A GB 532325A
Authority
GB
United Kingdom
Prior art keywords
making photographic
grain
photographic enlargements
mariani
july
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB21014/39A
Inventor
Paolo Mariani
Augusto Mariani
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AUGUSTO MARIANI
Original Assignee
AUGUSTO MARIANI
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by AUGUSTO MARIANI filed Critical AUGUSTO MARIANI
Publication of GB532325A publication Critical patent/GB532325A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C5/00—Photographic processes or agents therefor; Regeneration of such processing agents
    • G03C5/08—Photoprinting; Processes and means for preventing photoprinting
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C5/00—Photographic processes or agents therefor; Regeneration of such processing agents
    • G03C5/08—Photoprinting; Processes and means for preventing photoprinting
    • G03C5/10—Reflex-printing; Photoprinting using fluorescent or phosphorescent means

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)

Abstract

532,325. Photographic enlargements. MARIANI, P., and MARIANI, A. July 19, 1939, No. 21014. Convention date, July 19, 1938. [Class 98 (ii)] The grain of the negative used for producing an enlarged copy is eliminated from the copy by first preparing from the negative a series of identical negatives, e.g. on a kinematograph film, and then projecting these in registered super-imposition, e.g. by a kinematograph projector, on to the sensitive sheet used for the enlargement. The number of identical negatives required increases with the degree of enlargement desired.
GB21014/39A 1938-07-19 1939-07-19 A method of eliminating grain in making photographic enlargements Expired GB532325A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT532325X 1938-07-19

Publications (1)

Publication Number Publication Date
GB532325A true GB532325A (en) 1941-01-22

Family

ID=11281065

Family Applications (1)

Application Number Title Priority Date Filing Date
GB21014/39A Expired GB532325A (en) 1938-07-19 1939-07-19 A method of eliminating grain in making photographic enlargements

Country Status (3)

Country Link
BE (1) BE435509A (en)
FR (1) FR857974A (en)
GB (1) GB532325A (en)

Also Published As

Publication number Publication date
BE435509A (en) 1939-08-31
FR857974A (en) 1940-11-13

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