GB1250717A - - Google Patents
Info
- Publication number
- GB1250717A GB1250717A GB1250717DA GB1250717A GB 1250717 A GB1250717 A GB 1250717A GB 1250717D A GB1250717D A GB 1250717DA GB 1250717 A GB1250717 A GB 1250717A
- Authority
- GB
- United Kingdom
- Prior art keywords
- grains
- silver halide
- direct
- thioether
- emulsion
- 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
- G03C1/015—Apparatus or processes for the preparation of emulsions
-
- 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
- G03C1/485—Direct positive emulsions
- G03C1/48515—Direct positive emulsions prefogged
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Silver Salt Photography Or Processing Solution Therefor (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
1,250,717. Monodisperse photographic silver halide emulsions. EASTMAN KODAK CO. Jan.28, 1969 [Jan.29, 1968], No.4561/69. Heading G2C. A monodisperse photographic silver halide emulsion (i. e. one in which at least 95% by weight and/or by number of the grains have a diameter which is within 40% of the mean grain diameter) comprises silver halide grains for in the presence of an organic thioether silver halide solvent (i.e. an organic thioether compound which in 0À02 molar aqueous solution at 60‹ C. can dissolve more than twice the weight of silver chloride that will dissolve in the same amount of water at 60‹ C.). The silver halide preferably comprises at least 50 mole per cent silver bromide, and preferably at least 80% by weight or number of the grains are regular. The mean grain diameter is preferably at least 0À25 micron. The grains may be cubic-regular and have a mean diameter of not more than 2 microns. The emulsion may be a negative or direct-positive emulsion. The thioether solvent preferably contains at least one moiety of the formula -OCH 2 CH 2 S-. The thioether solvent is added before the grains have attained their ultimate size and shape. The grains are preferably formed in an aqueous medium of which the pH is maintained at less than 7 and of which the pAg is maintained between 7À1 and 9À6 throughout the grain formation. Direct-positive emulsions prepared using this process may have a photographic speed or sensitivity greater than that of direct-positive silver halide emulsions prepared by known methods.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US70109268A | 1968-01-29 | 1968-01-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1250717A true GB1250717A (en) | 1971-10-20 |
Family
ID=24816046
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1250717D Expired GB1250717A (en) | 1968-01-29 | 1969-01-28 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US3574628A (en) |
| BE (1) | BE727548A (en) |
| BR (1) | BR6905935D0 (en) |
| FR (1) | FR2000911A1 (en) |
| GB (1) | GB1250717A (en) |
Families Citing this family (54)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE794965A (en) * | 1972-02-03 | 1973-08-02 | Eastman Kodak Co | PROCESS FOR PREPARING A PHOTOSENSITIVE SILVER HALIDE EMULSION |
| GB1528951A (en) * | 1975-01-22 | 1978-10-18 | Agfa Gevaert | Development of photographic silver halide material |
| GB1535042A (en) * | 1975-04-09 | 1978-12-06 | Agfa Gevaert | Preparation of photographic silver halide emulsions |
| US4046576A (en) * | 1976-06-07 | 1977-09-06 | Eastman Kodak Company | Process for preparing silver halide emulsion using a sulfur-containing ripening agent |
| DE2758711A1 (en) * | 1977-12-29 | 1979-07-19 | Agfa Gevaert Ag | LIGHT SENSITIVE PHOTOGRAPHIC MATERIAL |
| DE2824249A1 (en) * | 1978-06-02 | 1979-12-06 | Agfa Gevaert Ag | PRODUCTION OF PHOTOGRAPHICAL MATERIALS |
| JPS59116647A (en) | 1982-12-13 | 1984-07-05 | Konishiroku Photo Ind Co Ltd | Silver halide photosensitive material |
| US4565778A (en) * | 1983-03-31 | 1986-01-21 | Konishiroku Photo Industry Co., Ltd. | Silver halide photographic materials |
| JPS59188641A (en) | 1983-04-11 | 1984-10-26 | Fuji Photo Film Co Ltd | Silver halide photographic emulsion |
| JPS613137A (en) * | 1984-06-15 | 1986-01-09 | Fuji Photo Film Co Ltd | Internal latent image type core/shell direct positive silver halide emulsion and its preparation |
| JPS6139043A (en) * | 1984-07-31 | 1986-02-25 | Fuji Photo Film Co Ltd | Color photographic sensitive material |
| JPH0623832B2 (en) * | 1984-08-17 | 1994-03-30 | 富士写真フイルム株式会社 | Silver halide color-reverse reflection print photosensitive material |
| DE3681237D1 (en) | 1985-02-06 | 1991-10-10 | Fuji Photo Film Co Ltd | PHOTOGRAPHIC, PHOTO-SENSITIVE SILVER HALIDE MATERIAL. |
| US4661438A (en) | 1985-04-04 | 1987-04-28 | Eastman Kodak Company | Quaternized tellurium salt fog inhibiting agents for silver halide photography |
| JPH0685056B2 (en) * | 1985-07-18 | 1994-10-26 | 富士写真フイルム株式会社 | Color photographic light-sensitive material |
| AU591540B2 (en) | 1985-12-28 | 1989-12-07 | Konishiroku Photo Industry Co., Ltd. | Method of processing light-sensitive silver halide color photographic material |
| DE3782351T2 (en) | 1986-03-25 | 1993-05-27 | Konishiroku Photo Ind | LIGHT SENSITIVE PHOTOGRAPHIC SILVER HALOGENID MATERIAL USED FOR FAST DEVELOPMENT. |
| US4695535A (en) * | 1986-12-29 | 1987-09-22 | Eastman Kodak Company | Silver halide photosensitive material |
| US4935337A (en) | 1987-10-20 | 1990-06-19 | Fuji Photo Film Co., Ltd. | Silver halide photographic material |
| JPH01108546A (en) | 1987-10-22 | 1989-04-25 | Fuji Photo Film Co Ltd | Silver halide color photographic sensitive material |
| JPH01140153A (en) | 1987-11-27 | 1989-06-01 | Fuji Photo Film Co Ltd | Silver halide color photographic sensitive material |
| JPH0833628B2 (en) | 1987-12-15 | 1996-03-29 | 富士写真フイルム株式会社 | Silver halide color photographic light-sensitive material |
| JPH07113746B2 (en) * | 1988-07-12 | 1995-12-06 | 富士写真フイルム株式会社 | Silver halide photographic light-sensitive material |
| US4973548A (en) * | 1988-08-05 | 1990-11-27 | Eastman Kodak Company | Photographic silver bromoiodide emulsions, elements and processes |
| EP0435334B1 (en) | 1989-12-29 | 1997-11-05 | Fuji Photo Film Co., Ltd. | Silver halide color photographic material containing yellow colored cyan coupler |
| DE69127002T2 (en) | 1990-01-31 | 1997-11-20 | Fuji Photo Film Co Ltd | Color photographic silver halide material |
| JPH04445A (en) | 1990-04-17 | 1992-01-06 | Fuji Photo Film Co Ltd | Processing method for silver halide color photosensitive material |
| DE69127130T2 (en) | 1990-05-09 | 1997-12-11 | Fuji Photo Film Co Ltd | Photographic processing composition and processing method using the same |
| FR2664400A1 (en) * | 1990-07-04 | 1992-01-10 | Kodak Pathe | INVERSIBLE PRODUCT FOR COLOR PHOTOGRAPHY. |
| DE69131785T2 (en) | 1990-08-20 | 2000-05-11 | Fuji Photo Film Co., Ltd. | Data-preserving photographic film product and method for producing a color image |
| JP2936105B2 (en) * | 1991-06-06 | 1999-08-23 | コニカ株式会社 | Method for producing silver halide emulsion and silver halide photographic material |
| JPH05173301A (en) * | 1991-12-24 | 1993-07-13 | Konica Corp | Silver halide color photographic sensitive material |
| EP0562476B1 (en) | 1992-03-19 | 2000-10-04 | Fuji Photo Film Co., Ltd. | Method for preparing a silver halide photographic emulsion |
| US5525460A (en) | 1992-03-19 | 1996-06-11 | Fuji Photo Film Co., Ltd. | Silver halide photographic emulsion and light-sensitive material using the same |
| JP2777949B2 (en) | 1992-04-03 | 1998-07-23 | 富士写真フイルム株式会社 | Silver halide color photographic materials |
| JPH05289270A (en) * | 1992-04-15 | 1993-11-05 | Fuji Photo Film Co Ltd | Silver halide color photographic sensitive material |
| US5246825A (en) * | 1992-05-08 | 1993-09-21 | Eastman Kodak Company | Preparation of photosensitive silver halide materials with organic ripening agents |
| US5246826A (en) * | 1992-05-08 | 1993-09-21 | Eastman Kodak Company | Process of preparing photosensitive silver halide emulsions |
| US5246827A (en) * | 1992-05-08 | 1993-09-21 | Eastman Kodak Company | Preparation of photosensitive silver halide materials with a combination of organic ripening agents |
| US5376484A (en) * | 1992-09-01 | 1994-12-27 | Konica Corporation | Photographic information recording method |
| JP3146387B2 (en) * | 1992-10-15 | 2001-03-12 | コニカ株式会社 | Silver halide photographic materials for laser light sources |
| JPH06175257A (en) * | 1992-12-10 | 1994-06-24 | Konica Corp | Silver halide photographic sensitive material |
| US5407791A (en) | 1993-01-18 | 1995-04-18 | Fuji Photo Film Co., Ltd. | Silver halide photographic material |
| JPH0815827A (en) | 1994-06-28 | 1996-01-19 | Konica Corp | Combination of silver halide photographic sensitive material and radiation-sensitized screen |
| JPH0854716A (en) * | 1994-08-12 | 1996-02-27 | Konica Corp | Silver halide photographic sensitive material and its processing method |
| EP0699950B1 (en) | 1994-08-26 | 2000-05-24 | Eastman Kodak Company | Ultrathin tabular grain emulsions with novel dopant management |
| EP0699944B1 (en) | 1994-08-26 | 2000-06-07 | Eastman Kodak Company | Tabular grain emulsions with sensitization enhancements |
| EP0699949B1 (en) | 1994-08-26 | 2000-06-07 | Eastman Kodak Company | Ultrathin tabular grain emulsions with dopants at selected locations |
| DE69515776T2 (en) * | 1994-09-09 | 2000-07-27 | Konica Corp., Tokio/Tokyo | Photographic processing method for processing a silver halide photographic light-sensitive material |
| US5476760A (en) | 1994-10-26 | 1995-12-19 | Eastman Kodak Company | Photographic emulsions of enhanced sensitivity |
| JPH09152696A (en) | 1995-11-30 | 1997-06-10 | Fuji Photo Film Co Ltd | Silver halide color photographic sensitive material |
| EP0874276B1 (en) * | 1997-04-24 | 2000-10-04 | Konica Corporation | Photographic developer and method for developing silver halide photographic light sensitive material by use thereof |
| US7241564B2 (en) | 2004-08-02 | 2007-07-10 | Fujifilm Corporation | Silver halide holographic sensitive material and system for taking holographic images by using the same |
| EP1691237A3 (en) | 2005-02-15 | 2006-10-18 | Fuji Photo Film Co., Ltd. | Holographic recording material and holographic recording method |
-
1968
- 1968-01-29 US US701092*A patent/US3574628A/en not_active Expired - Lifetime
-
1969
- 1969-01-28 GB GB1250717D patent/GB1250717A/en not_active Expired
- 1969-01-28 BR BR205935/69*7A patent/BR6905935D0/en unknown
- 1969-01-28 BE BE727548D patent/BE727548A/xx unknown
- 1969-01-29 FR FR6901721A patent/FR2000911A1/fr not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| FR2000911A1 (en) | 1969-09-19 |
| US3574628A (en) | 1971-04-13 |
| DE1904148A1 (en) | 1969-10-09 |
| DE1904148B2 (en) | 1975-08-14 |
| BE727548A (en) | 1969-07-01 |
| BR6905935D0 (en) | 1973-01-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB1250717A (en) | ||
| US3957490A (en) | Method of preparing photographic silver halide emulsions | |
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| US4040839A (en) | Direct-positive process utilizing a supersensitized silver halide emulsion | |
| US3647455A (en) | Direct positive emulsions containing iodide ions and a sensitizing dye | |
| GB1427525A (en) | Directpositive silver halide emulsions | |
| US3859093A (en) | Fogged, direct positive emulsion containing composite silver halide grains protected with silver halide layer and the use thereof in reversal process | |
| US4287296A (en) | Direct-positive emulsion containing fogged, silver halide grains of silver iodide content | |
| US4278759A (en) | Process of preparing photographic silver halide emulsion | |
| US3782959A (en) | Polyhedral borane fogged direct-positive silver halide emulsion containing an organic sulfoxide | |
| GB1179136A (en) | Photographic Material. | |
| GB1535042A (en) | Preparation of photographic silver halide emulsions | |
| SU453852A3 (en) | LIGHT-SENSITIVE PHOTOGRAPHIC MATERIAL | |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PCNP | Patent ceased through non-payment of renewal fee |