FR944308A - Method and means for increasing the speed and contrast of photographic emulsions and resulting products - Google Patents

Method and means for increasing the speed and contrast of photographic emulsions and resulting products

Info

Publication number
FR944308A
FR944308A FR944308DA FR944308A FR 944308 A FR944308 A FR 944308A FR 944308D A FR944308D A FR 944308DA FR 944308 A FR944308 A FR 944308A
Authority
FR
France
Prior art keywords
contrast
increasing
speed
resulting products
photographic emulsions
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
Other languages
French (fr)
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.)
Kodak Pathe SA
Original Assignee
Kodak Pathe SA
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 Kodak Pathe SA filed Critical Kodak Pathe SA
Application granted granted Critical
Publication of FR944308A publication Critical patent/FR944308A/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
    • G03C1/00—Photosensitive materials
    • G03C1/005—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein
    • G03C1/06—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein with non-macromolecular additives
    • G03C1/061—Hydrazine compounds
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S430/00—Radiation imagery chemistry: process, composition, or product thereof
    • Y10S430/145—Infrared

Landscapes

  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)
  • Pyridine Compounds (AREA)
FR944308D 1943-08-26 1946-12-31 Method and means for increasing the speed and contrast of photographic emulsions and resulting products Expired FR944308A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US500088A US2419975A (en) 1943-08-26 1943-08-26 Increasing speed and contrast of photographic emulsions

Publications (1)

Publication Number Publication Date
FR944308A true FR944308A (en) 1949-04-01

Family

ID=23987987

Family Applications (1)

Application Number Title Priority Date Filing Date
FR944308D Expired FR944308A (en) 1943-08-26 1946-12-31 Method and means for increasing the speed and contrast of photographic emulsions and resulting products

Country Status (3)

Country Link
US (1) US2419975A (en)
FR (1) FR944308A (en)
GB (1) GB598108A (en)

Families Citing this family (43)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2533990A (en) * 1947-06-10 1950-12-12 Du Pont Silver halide developer compositions containing polyoxyalkylene ethers of hexitol ring dehydration products
US2706157A (en) * 1951-07-21 1955-04-12 Grant Photo Products Inc Processing photographic paper and film
US2648604A (en) * 1951-12-28 1953-08-11 Gen Aniline & Film Corp Photographic developer containing a pyridinium salt and process of development
US2879160A (en) * 1954-09-09 1959-03-24 Antioch College Of Yellow Spri Composition for developing surface disturbances on a photographic film
US2940851A (en) * 1957-11-27 1960-06-14 Eastman Kodak Co Sensitization of photographic emulsions
US3160539A (en) * 1958-09-08 1964-12-08 Trw Semiconductors Inc Surface treatment of silicon
BE601938A (en) * 1960-03-29
BE613239A (en) * 1961-02-01
BE621461A (en) * 1961-08-17
US3311473A (en) * 1962-06-28 1967-03-28 Eastman Kodak Co Silver halide diffusion process and products therefor
US3471295A (en) * 1964-06-20 1969-10-07 Beate Elisabeth Loffler Production of colored direct-positive images
JPS5115745B1 (en) * 1971-03-26 1976-05-19
GB1560005A (en) * 1976-08-11 1980-01-30 Fuji Photo Film Co Ltd Silver halide photographic emulsions
JPS589411B2 (en) * 1976-10-18 1983-02-21 富士写真フイルム株式会社 High contrast photographic material
JPS5814664B2 (en) * 1976-12-30 1983-03-22 富士写真フイルム株式会社 Processing method for silver halide photographic materials
JPS589412B2 (en) * 1977-08-30 1983-02-21 富士写真フイルム株式会社 Method for developing silver halide photographic materials
JPS5952817B2 (en) * 1977-09-06 1984-12-21 富士写真フイルム株式会社 How to form high contrast photographic images
US4650746A (en) * 1978-09-22 1987-03-17 Eastman Kodak Company High contrast photographic emulsions and elements and processes for their development
JPS6015261B2 (en) * 1978-10-12 1985-04-18 富士写真フイルム株式会社 Silver halide photographic material
US4269929A (en) * 1980-01-14 1981-05-26 Eastman Kodak Company High contrast development of photographic elements
CA1170886A (en) * 1981-09-02 1984-07-17 Paul M. Magee Nucleating composition for silver halide including triazole substituted and thiourea substituted phenyl hydrazides
JPS59201049A (en) * 1983-04-30 1984-11-14 Konishiroku Photo Ind Co Ltd Method for forming positive type image
US4459347A (en) * 1983-05-11 1984-07-10 Eastman Kodak Company Adsorbable arylhydrazides and applications thereof to silver halide photography
US4478928A (en) * 1983-05-11 1984-10-23 Eastman Kodak Company Application of activated arylhydrazides to silver halide photography
US4560638A (en) * 1984-10-09 1985-12-24 Eastman Kodak Company Halftone imaging silver halide emulsions, photographic elements, and processes which employ novel arylhydrazides
US4618574A (en) * 1985-07-18 1986-10-21 Eastman Kodak Company High contrast photographic elements exhibiting reduced pepper fog
US4634661A (en) * 1985-07-18 1987-01-06 Eastman Kodak Company High contrast photographic elements exhibiting stabilized sensitivity
DE3788600T2 (en) * 1986-07-22 1994-04-28 Fuji Photo Film Co Ltd Process for treating silver halide color photographic material.
CA2016774A1 (en) * 1989-05-25 1990-11-25 Takeshi Sampei Silver halide photographic light-sensitive material
US5212045A (en) * 1990-05-09 1993-05-18 Mitsubishi Paper Mills Limited Method for image formation
DE69405535T2 (en) * 1994-03-11 1998-04-02 Agfa Gevaert Nv Photographic material containing a new type of hydrazide
GB9410425D0 (en) * 1994-05-24 1994-07-13 Ilford Ag Novel bishydrazides
US5686222A (en) * 1994-05-24 1997-11-11 Ilford A.G. Dihydrazides
JP3238005B2 (en) * 1994-06-24 2001-12-10 三菱製紙株式会社 Silver halide photographic materials
US6010841A (en) * 1996-01-26 2000-01-04 Eastman Kodak Company Silver halide light sensitive emulsion layer having enhanced photographic sensitivity
US5747236A (en) 1996-01-26 1998-05-05 Eastman Kodak Company Silver halide light sensitive emulsion layer having enhanced photographic sensitivity
US5747235A (en) 1996-01-26 1998-05-05 Eastman Kodak Company Silver halide light sensitive emulsion layer having enhanced photographic sensitivity
EP0786692B1 (en) 1996-01-26 2004-11-17 Eastman Kodak Company Silver halide light sensitive emulsion layer having enhanced photographic sensitivity
EP0848287A1 (en) 1996-12-11 1998-06-17 Imation Corp. Photographic silver halide developer composition and process for forming photographic silver images
EP0893731B1 (en) * 1997-07-25 2004-01-28 Eastman Kodak Company Silver halide light sensitive emulsion layer having enhanced photographic sensitivity
DE69810853T2 (en) * 1997-07-25 2004-01-22 Eastman Kodak Co. Photosensitive silver halide emulsion layer with increased photographic sensitivity
US5994051A (en) * 1997-07-25 1999-11-30 Eastman Kodak Company Silver halide light sensitive emulsion layer having enhanced photographic sensitivity
US6514682B1 (en) 2001-06-20 2003-02-04 Eastman Kodak Company Speed addendum for photographic emulsions

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US956567A (en) * 1908-04-24 1910-05-03 William Hay Caldwell Sensitized surface or film for photographic purposes.
US1082622A (en) * 1912-06-19 1913-12-30 William Hay Caldwell Development of photographic images.
US1560240A (en) * 1924-08-11 1925-11-03 Jelley Edwin Ernest Photographic sensitizer
US1763990A (en) * 1929-02-25 1930-06-17 Eastman Kodak Co Photographic light-sensitive material and process for making same
US2127573A (en) * 1936-04-16 1938-08-23 Eastman Kodak Co Photographic emulsions
US2266442A (en) * 1937-04-10 1941-12-16 Eastman Kodak Co Color print by multiple color development
GB502960A (en) * 1937-07-26 1939-03-27 Kodak Ltd Process for producing dye images in the development of silver images
BE436252A (en) * 1938-09-02
US2245236A (en) * 1939-04-28 1941-06-10 Eastman Kodak Co Method of increasing infrared sensitivity
BE439613A (en) * 1939-07-14
US2220929A (en) * 1939-10-16 1940-11-12 Du Pont Film Mfg Corp Photographic developing solutions containing aromatic hydrazines, their preparation and use
US2339213A (en) * 1939-10-16 1944-01-11 Du Pont Color development process using aromatic hydrazines
FR956701A (en) * 1941-11-13 1950-02-06

Also Published As

Publication number Publication date
US2419975A (en) 1947-05-06
GB598108A (en) 1948-02-11

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