GB1157070A - Direct Positive Photographic Materials - Google Patents
Direct Positive Photographic MaterialsInfo
- Publication number
- GB1157070A GB1157070A GB10478/69A GB1047869A GB1157070A GB 1157070 A GB1157070 A GB 1157070A GB 10478/69 A GB10478/69 A GB 10478/69A GB 1047869 A GB1047869 A GB 1047869A GB 1157070 A GB1157070 A GB 1157070A
- Authority
- GB
- United Kingdom
- Prior art keywords
- grains
- mole
- silver halide
- silver
- direct
- 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
- G03C1/485—Direct positive emulsions
- G03C1/48515—Direct positive emulsions prefogged
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F28/00—Homopolymers and copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a bond to sulfur or by a heterocyclic ring containing sulfur
-
- 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
- G03C1/04—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein with macromolecular additives; with layer-forming substances
- G03C1/053—Polymers obtained by reactions involving only carbon-to-carbon unsaturated bonds, e.g. vinyl polymers
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- General Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Silver Salt Photography Or Processing Solution Therefor (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
1, 157, 070. Direct-positive photographic silver halide emulsions. EASTMAN KODAK CO. Nov. 8, 1966 [ Sept. 27, 1966], No. 10478/69. Divided out of 1, 152, 375. Heading G2C. A fogged, direct-positive, photographic silver halide emulsion contains silver halide grains containing at least 10 mole of AgCl, AgBr and less than 5 mole of AgI, if any, the grains having in at least part of the surface thereof bromide ions in place of chloride ions so that the molar concentration of AgBr in the surface is higher and the molar concentration of Ag Cl is equally lower than the concentration below the surface. The grains are made by reacting silver chloride, silver chlorobromide or silver chlorobromoiodide grains containing less than 5 mole of AgI with a water-soluble bromide salt so that the reacted grains contain at least 10 mole of AgC1, the grains being fogged before during or after the reaction, e.g. by a reduction foggant preferably with a gold foggant. The emulsion is resistant to kink-mark desensitisation.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US50686265A | 1965-11-08 | 1965-11-08 | |
US58226266A | 1966-09-27 | 1966-09-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1157070A true GB1157070A (en) | 1969-07-02 |
Family
ID=27055610
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB10478/69A Expired GB1157070A (en) | 1965-11-08 | 1966-11-08 | Direct Positive Photographic Materials |
GB49932/66A Expired GB1152375A (en) | 1965-11-08 | 1966-11-08 | Direct Positive Photographic Materials |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB49932/66A Expired GB1152375A (en) | 1965-11-08 | 1966-11-08 | Direct Positive Photographic Materials |
Country Status (6)
Country | Link |
---|---|
US (2) | US3512985A (en) |
BE (2) | BE689232A (en) |
CH (2) | CH498418A (en) |
DE (2) | DE1547747C3 (en) |
FR (2) | FR1498212A (en) |
GB (2) | GB1157070A (en) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2216075A1 (en) * | 1972-04-01 | 1973-10-11 | Agfa Gevaert Ag | PHOTOGRAPHIC MATERIAL FOR THE PRODUCTION OF DIRECT POSITIVE PHOTOGRAPHIC IMAGES |
JPS49106821A (en) * | 1973-02-12 | 1974-10-09 | ||
US3861918A (en) * | 1973-03-09 | 1975-01-21 | Polaroid Corp | Synthetic silver halide emulsion binder |
US4070190A (en) * | 1973-09-03 | 1978-01-24 | E. I. Du Pont De Nemours And Company | Process for producing photographic silver halide emulsions having a core/shell structure |
US4131471A (en) * | 1975-12-08 | 1978-12-26 | Polaroid Corporation | Synthetic polymeric silver halide peptizer |
US4089688A (en) * | 1975-12-08 | 1978-05-16 | Polaroid Corporation | Polymeric N-alkenyl carbamate silver halide peptizer |
US4120727A (en) * | 1975-12-08 | 1978-10-17 | Polaroid Corporation | Polymeric cyanoalkyl acrylate silver halide peptizer |
US4210450A (en) * | 1978-11-20 | 1980-07-01 | Polaroid Corporation | Method for forming photosensitive silver halide emulsion |
DE69018827T2 (en) * | 1990-10-19 | 1995-09-21 | Agfa Gevaert Nv | Production of chloride-rich tabular emulsion grains. |
EP0562476B1 (en) | 1992-03-19 | 2000-10-04 | Fuji Photo Film Co., Ltd. | Method for preparing a silver halide photographic emulsion |
EP0563708B1 (en) | 1992-03-19 | 2000-06-21 | Fuji Photo Film Co., Ltd. | Process for preparing a silver halide photographic emulsion |
JPH09152696A (en) | 1995-11-30 | 1997-06-10 | Fuji Photo Film Co Ltd | Silver halide color photographic sensitive material |
CN102503186B (en) * | 2011-11-10 | 2014-06-11 | 复旦大学 | Method for manufacturing infrared hollow optical fiber |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2490758A (en) * | 1948-08-28 | 1949-12-06 | Eastman Kodak Co | Fuchsone dyes in a direct positive photographic process |
BE539322A (en) * | 1954-06-29 | |||
BE609927A (en) * | 1959-01-12 | |||
US3287289A (en) * | 1962-06-11 | 1966-11-22 | Eastman Kodak Co | Plasticizers for radiation sensitive systems |
-
1965
- 1965-11-08 US US506862A patent/US3512985A/en not_active Expired - Lifetime
-
1966
- 1966-09-27 US US582262A patent/US3477852A/en not_active Expired - Lifetime
- 1966-11-03 BE BE689232A patent/BE689232A/xx unknown
- 1966-11-03 BE BE689233A patent/BE689233A/xx unknown
- 1966-11-04 FR FR82488A patent/FR1498212A/en not_active Expired
- 1966-11-04 FR FR82489A patent/FR1498213A/en not_active Expired
- 1966-11-07 DE DE1547747A patent/DE1547747C3/en not_active Expired
- 1966-11-07 DE DE1966E0032798 patent/DE1547746A1/en active Pending
- 1966-11-08 GB GB10478/69A patent/GB1157070A/en not_active Expired
- 1966-11-08 CH CH1659768A patent/CH498418A/en not_active IP Right Cessation
- 1966-11-08 GB GB49932/66A patent/GB1152375A/en not_active Expired
- 1966-11-08 CH CH1605466A patent/CH474779A/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
US3477852A (en) | 1969-11-11 |
BE689233A (en) | 1967-04-14 |
GB1152375A (en) | 1969-05-14 |
US3512985A (en) | 1970-05-19 |
FR1498213A (en) | 1967-10-13 |
DE1547747C3 (en) | 1975-06-19 |
FR1498212A (en) | 1967-10-13 |
DE1547747B2 (en) | 1974-11-07 |
CH498418A (en) | 1970-10-31 |
DE1547746A1 (en) | 1969-11-20 |
DE1547747A1 (en) | 1969-12-04 |
BE689232A (en) | 1967-04-14 |
CH474779A (en) | 1969-06-30 |
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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 |