GB598108A - Improvements relating to photography - Google Patents

Improvements relating to photography

Info

Publication number
GB598108A
GB598108A GB16332/44A GB1633244A GB598108A GB 598108 A GB598108 A GB 598108A GB 16332/44 A GB16332/44 A GB 16332/44A GB 1633244 A GB1633244 A GB 1633244A GB 598108 A GB598108 A GB 598108A
Authority
GB
United Kingdom
Prior art keywords
chloride
prepared
refluxing
hydrazine hydrate
ethyl
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
GB16332/44A
Other languages
English (en)
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 Ltd
Original Assignee
Kodak Ltd
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 Ltd filed Critical Kodak Ltd
Publication of GB598108A publication Critical patent/GB598108A/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)
GB16332/44A 1943-08-26 1944-08-28 Improvements relating to photography Expired GB598108A (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
GB598108A true GB598108A (en) 1948-02-11

Family

ID=23987987

Family Applications (1)

Application Number Title Priority Date Filing Date
GB16332/44A Expired GB598108A (en) 1943-08-26 1944-08-28 Improvements relating to photography

Country Status (3)

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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0848287A1 (fr) 1996-12-11 1998-06-17 Imation Corp. Composition de révélateur pour des matériaux photographiques à l'halogénure d'argent et procédé pour former des images photographiques d'argent

Families Citing this family (42)

* 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
US2944898A (en) * 1957-11-27 1960-07-12 Eastman Kodak Co Sensitization of photographic emulsions
US3160539A (en) * 1958-09-08 1964-12-08 Trw Semiconductors Inc Surface treatment of silicon
BE601938A (fr) * 1960-03-29
BE613239A (fr) * 1961-02-01
BE621461A (fr) * 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 (fr) * 1971-03-26 1976-05-19
GB1560005A (en) * 1976-08-11 1980-01-30 Fuji Photo Film Co Ltd Silver halide photographic emulsions
JPS589411B2 (ja) * 1976-10-18 1983-02-21 富士写真フイルム株式会社 硬調写真感光材料
JPS5814664B2 (ja) * 1976-12-30 1983-03-22 富士写真フイルム株式会社 ハロゲン化銀写真感光材料の処理方法
JPS589412B2 (ja) * 1977-08-30 1983-02-21 富士写真フイルム株式会社 ハロゲン化銀写真感光材料の現像方法
JPS5952817B2 (ja) * 1977-09-06 1984-12-21 富士写真フイルム株式会社 硬調写真画像を形成する方法
US4650746A (en) * 1978-09-22 1987-03-17 Eastman Kodak Company High contrast photographic emulsions and elements and processes for their development
JPS6015261B2 (ja) * 1978-10-12 1985-04-18 富士写真フイルム株式会社 ハロゲン化銀写真感光材料
US4269929A (en) * 1980-01-14 1981-05-26 Eastman Kodak Company High contrast development of photographic elements
CA1170886A (fr) * 1981-09-02 1984-07-17 Paul M. Magee Composition de nucleation pour halogenure d'argent, renfermant des hydrazides phenyliques a substitution triazolique et thioureique
JPS59201049A (ja) * 1983-04-30 1984-11-14 Konishiroku Photo Ind Co Ltd ポジ型画像の形成方法
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
US4634661A (en) * 1985-07-18 1987-01-06 Eastman Kodak Company High contrast photographic elements exhibiting stabilized sensitivity
US4618574A (en) * 1985-07-18 1986-10-21 Eastman Kodak Company High contrast photographic elements exhibiting reduced pepper fog
EP0254280B1 (fr) * 1986-07-22 1993-12-29 Fuji Photo Film Co., Ltd. Procédé de traitement d'un matériau photographique couleur à l'halogénure d'argent
CA2016774A1 (fr) * 1989-05-25 1990-11-25 Takeshi Sampei Materiau photosensible a l'halogenure d'argent pour la photographie
US5212045A (en) * 1990-05-09 1993-05-18 Mitsubishi Paper Mills Limited Method for image formation
EP0671654B1 (fr) * 1994-03-11 1997-09-10 Agfa-Gevaert N.V. Matériau photographique contenant un nouveau type d'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 (ja) * 1994-06-24 2001-12-10 三菱製紙株式会社 ハロゲン化銀写真感光材料
US5747236A (en) * 1996-01-26 1998-05-05 Eastman Kodak Company Silver halide light sensitive emulsion layer having enhanced photographic sensitivity
US6010841A (en) * 1996-01-26 2000-01-04 Eastman Kodak Company Silver halide light sensitive emulsion layer having enhanced photographic sensitivity
DE69731568T2 (de) 1996-01-26 2005-12-22 Eastman Kodak Co. Lichtempfindliche Silberhalogenidemulsionschicht mit gesteigerter photographischer Empfindlichkeit
US5747235A (en) 1996-01-26 1998-05-05 Eastman Kodak Company Silver halide light sensitive emulsion layer having enhanced photographic sensitivity
US5994051A (en) * 1997-07-25 1999-11-30 Eastman Kodak Company Silver halide light sensitive emulsion layer having enhanced photographic sensitivity
DE69810853T2 (de) * 1997-07-25 2004-01-22 Eastman Kodak Co. Lichtempfindliche Silberhalogenid-Emulsionsschicht mit erhöhter photographischer Empfindlichkeit
DE69821294T2 (de) * 1997-07-25 2004-11-18 Eastman Kodak Co. Lichtempfindliche Silberhalogenidemulsionsschicht mit verstärkter photographischer Empfindlichkeit
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 (fr) * 1938-09-02
US2245236A (en) * 1939-04-28 1941-06-10 Eastman Kodak Co Method of increasing infrared sensitivity
BE439613A (fr) * 1939-07-14
US2339213A (en) * 1939-10-16 1944-01-11 Du Pont Color development process using aromatic hydrazines
US2220929A (en) * 1939-10-16 1940-11-12 Du Pont Film Mfg Corp Photographic developing solutions containing aromatic hydrazines, their preparation and use
FR956701A (fr) * 1941-11-13 1950-02-06

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0848287A1 (fr) 1996-12-11 1998-06-17 Imation Corp. Composition de révélateur pour des matériaux photographiques à l'halogénure d'argent et procédé pour former des images photographiques d'argent

Also Published As

Publication number Publication date
FR944308A (fr) 1949-04-01
US2419975A (en) 1947-05-06

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