FR806971A - Advanced process for modifying the sensitivity of photographic emulsions - Google Patents

Advanced process for modifying the sensitivity of photographic emulsions

Info

Publication number: FR806971A
Authority: FR; France
Prior art keywords: modifying; sensitivity; photographic emulsions; advanced process; advanced
Prior art date: 1935-05-30
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

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.)

Ilford Imaging UK Ltd

Original Assignee

Ilford 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.)

1935-05-30

Filing date

1936-05-30

Publication date

1936-12-30

1936-05-30 Application filed by Ilford Ltd filed Critical Ilford Ltd

1936-12-30 Application granted granted Critical

1936-12-30 Publication of FR806971A publication Critical patent/FR806971A/en

Status Expired legal-status Critical Current

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
- G03C1/08—Sensitivity-increasing substances
- G03C1/09—Noble metals or mercury; Salts or compounds thereof; Sulfur, selenium or tellurium, or compounds thereof, e.g. for chemical sensitising

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)
Plural Heterocyclic Compounds (AREA)
Heterocyclic Carbon Compounds Containing A Hetero Ring Having Nitrogen And Oxygen As The Only Ring Hetero Atoms (AREA)
Pyridine Compounds (AREA)

FR806971D 1935-05-30 1936-05-30 Advanced process for modifying the sensitivity of photographic emulsions Expired FR806971A (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
GB15819/35A GB457527A (en)	1935-05-30	1935-05-30	An improved method of modifying the sensitivity of photographic emulsions

Publications (1)

Publication Number	Publication Date
FR806971A true FR806971A (en)	1936-12-30

Family

ID=10066080

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
FR806971D Expired FR806971A (en)	1935-05-30	1936-05-30	Advanced process for modifying the sensitivity of photographic emulsions

Country Status (3)

Country	Link
US (1)	US2153929A (en)
FR (1)	FR806971A (en)
GB (1)	GB457527A (en)

1935
- 1935-05-30 GB GB15819/35A patent/GB457527A/en not_active Expired
1936
- 1936-05-25 US US81782A patent/US2153929A/en not_active Expired - Lifetime
- 1936-05-30 FR FR806971D patent/FR806971A/en not_active Expired

Also Published As

Publication number	Publication date
GB457527A (en)	1936-11-30
US2153929A (en)	1939-04-11

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