GB1466050A - Silver halide photographic materials - Google Patents
Silver halide photographic materialsInfo
- Publication number
- GB1466050A GB1466050A GB1038775A GB1038775A GB1466050A GB 1466050 A GB1466050 A GB 1466050A GB 1038775 A GB1038775 A GB 1038775A GB 1038775 A GB1038775 A GB 1038775A GB 1466050 A GB1466050 A GB 1466050A
- Authority
- GB
- United Kingdom
- Prior art keywords
- silver halide
- group
- optionally substituted
- grains
- aliphatic
- 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
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
- G03C1/08—Sensitivity-increasing substances
- G03C1/28—Sensitivity-increasing substances together with supersensitising substances
-
- 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
- G03C1/46—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein having more than one photosensitive layer
Landscapes
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- General Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Silver Salt Photography Or Processing Solution Therefor (AREA)
Abstract
1466050 Silver halide material FUJI PHOTO FILM CO Ltd 12 March 1975 [12 March 1974] 10387/75 Heading G2C A light-sensitive silver halide photographic material comprises a support having thereon a silver halide emulsion layer in which at least 50% by number of the silver halide grains have a (100) crystal habit, at least one of the photographic layers of the material comprises a compound of Formula 1. in which R<SP>1</SP> represents an optionally substituted aliphatic hydrocarbon group or an aryl group, and each of R<SP>2</SP> and R<SP>3</SP> represents a hydrogen atom or an aliphatic or aryl group or R<SP>2</SP> and R<SP>3</SP> together represent a divalent aliphatic group which completes a 5- or 6-membered ring, and at least one of the polymethine dyes represented by the general Formulae II and III. wherein each of Z<SP>1</SP> and Z<SP>2</SP> represents a group of atoms necessary to complete an optionally substituted benzothiazole, naphthothiazole, benzoselenazole or naphthoselenazole nucleus; A represents an alkyl group; each of R<SP>4</SP> and R<SP>5</SP> represents an aliphatic group; x # represents an anion; and n is 0 or 1, n being 0 when an internal betaine-type salt is formed; wherein Z<SP>3</SP> represents the atoms necessary to complete an optionally substituted oxazoline, oxazole, benzoxazole, naphthoxazole, thiazoline, thiazole, benzothiazole, naphthothiazole, benzoselenazole, pyrroline, tetrazole, pyridine or quinoline nucleus, Q represents the atoms necessary to complete a 2-thioxazolidinedione, 2-thiohydentoin or rhodanine nucleus, R<SP>6</SP> represents an aliphatic group L represents an optionally substituted methine group and each of p and q is 0 or 1. The sensitivity to low illuminance for long exposure times is improved. The silver halide grains may have an average grain size from 0À04Á to 2Á, especially 0À1Á to 0À7Á. In Examples (i) an emulsion containing 80% of silver halide crystals of (100) habit is prepared by mixing solutions of gelatin, silver nitrate and potassium bromide and iodide while adjusting the p Ag to 8À8 during the formation of the silver grains, washing, ripening and adding chlorauric acid and sodium thiosulphate sensitizers. A comparison emulsion prepared at p Ag 9À5 has 80% of the grains with the (iii) crystal habit. To the emulsions compounds of types I, II and III are added and tests carried out with exposures of 10<SP>-4</SP> and 10 seconds.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2842574A JPS5724534B2 (en) | 1974-03-12 | 1974-03-12 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1466050A true GB1466050A (en) | 1977-03-02 |
Family
ID=12248294
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1038775A Expired GB1466050A (en) | 1974-03-12 | 1975-03-12 | Silver halide photographic materials |
Country Status (5)
Country | Link |
---|---|
JP (1) | JPS5724534B2 (en) |
BE (1) | BE826548A (en) |
DE (1) | DE2510798A1 (en) |
FR (1) | FR2264305B1 (en) |
GB (1) | GB1466050A (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5845014B2 (en) * | 1977-08-16 | 1983-10-06 | 富士写真フイルム株式会社 | Silver halide photographic material |
-
1974
- 1974-03-12 JP JP2842574A patent/JPS5724534B2/ja not_active Expired
-
1975
- 1975-03-11 FR FR7507543A patent/FR2264305B1/fr not_active Expired
- 1975-03-11 BE BE154226A patent/BE826548A/en not_active IP Right Cessation
- 1975-03-12 GB GB1038775A patent/GB1466050A/en not_active Expired
- 1975-03-12 DE DE19752510798 patent/DE2510798A1/en not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
DE2510798A1 (en) | 1975-09-25 |
JPS50122928A (en) | 1975-09-26 |
FR2264305B1 (en) | 1982-04-30 |
FR2264305A1 (en) | 1975-10-10 |
JPS5724534B2 (en) | 1982-05-25 |
BE826548A (en) | 1975-06-30 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |