US2540086A - Silver halibe emulsions - Google Patents
Silver halibe emulsions Download PDFInfo
- Publication number
- US2540086A US2540086A US3366448A US2540086A US 2540086 A US2540086 A US 2540086A US 3366448 A US3366448 A US 3366448A US 2540086 A US2540086 A US 2540086A
- Authority
- US
- United States
- Prior art keywords
- silver
- palladium
- emulsions
- per cent
- mol per
- 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 - Lifetime
Links
- 239000000839 emulsion Substances 0.000 title claims description 28
- 229910052709 silver Inorganic materials 0.000 title claims description 16
- 239000004332 silver Substances 0.000 title claims description 16
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 title claims description 8
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 claims description 31
- 229910052763 palladium Inorganic materials 0.000 claims description 16
- -1 SILVER HALIDE Chemical class 0.000 claims description 9
- 150000003839 salts Chemical class 0.000 claims description 9
- 239000000084 colloidal system Substances 0.000 claims description 7
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 12
- 229910052737 gold Inorganic materials 0.000 description 12
- 239000010931 gold Substances 0.000 description 12
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 11
- 229910052753 mercury Inorganic materials 0.000 description 11
- 108010010803 Gelatin Proteins 0.000 description 8
- 239000008273 gelatin Substances 0.000 description 8
- 229920000159 gelatin Polymers 0.000 description 8
- 235000019322 gelatine Nutrition 0.000 description 8
- 235000011852 gelatine desserts Nutrition 0.000 description 8
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 6
- 239000011593 sulfur Substances 0.000 description 6
- 229910052717 sulfur Inorganic materials 0.000 description 6
- 231100000489 sensitizer Toxicity 0.000 description 5
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 4
- QIGBRXMKCJKVMJ-UHFFFAOYSA-N Hydroquinone Chemical compound OC1=CC=C(O)C=C1 QIGBRXMKCJKVMJ-UHFFFAOYSA-N 0.000 description 4
- SJUCACGNNJFHLB-UHFFFAOYSA-N O=C1N[ClH](=O)NC2=C1NC(=O)N2 Chemical compound O=C1N[ClH](=O)NC2=C1NC(=O)N2 SJUCACGNNJFHLB-UHFFFAOYSA-N 0.000 description 4
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 description 4
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- 229920002678 cellulose Polymers 0.000 description 3
- ADZWSOLPGZMUMY-UHFFFAOYSA-M silver bromide Chemical compound [Ag]Br ADZWSOLPGZMUMY-UHFFFAOYSA-M 0.000 description 3
- 229910052708 sodium Inorganic materials 0.000 description 3
- 239000011734 sodium Substances 0.000 description 3
- JKFYKCYQEWQPTM-UHFFFAOYSA-N 2-azaniumyl-2-(4-fluorophenyl)acetate Chemical compound OC(=O)C(N)C1=CC=C(F)C=C1 JKFYKCYQEWQPTM-UHFFFAOYSA-N 0.000 description 2
- 229910021612 Silver iodide Inorganic materials 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- 238000007792 addition Methods 0.000 description 2
- 239000002671 adjuvant Substances 0.000 description 2
- ZOJBYZNEUISWFT-UHFFFAOYSA-N allyl isothiocyanate Chemical compound C=CCN=C=S ZOJBYZNEUISWFT-UHFFFAOYSA-N 0.000 description 2
- 229910021538 borax Inorganic materials 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- XNGIFLGASWRNHJ-UHFFFAOYSA-N phthalic acid Chemical compound OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 description 2
- IOLCXVTUBQKXJR-UHFFFAOYSA-M potassium bromide Chemical compound [K+].[Br-] IOLCXVTUBQKXJR-UHFFFAOYSA-M 0.000 description 2
- 230000001235 sensitizing effect Effects 0.000 description 2
- 229940045105 silver iodide Drugs 0.000 description 2
- SQGYOTSLMSWVJD-UHFFFAOYSA-N silver(1+) nitrate Chemical compound [Ag+].[O-]N(=O)=O SQGYOTSLMSWVJD-UHFFFAOYSA-N 0.000 description 2
- 235000010265 sodium sulphite Nutrition 0.000 description 2
- 239000004328 sodium tetraborate Substances 0.000 description 2
- 235000010339 sodium tetraborate Nutrition 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- AGJZCWVTGOVGBS-UHFFFAOYSA-N 1,1'-diethyl-2,2'-cyanine Chemical compound C1=CC2=CC=CC=C2N(CC)\C1=C\C1=CC=C(C=CC=C2)C2=[N+]1CC AGJZCWVTGOVGBS-UHFFFAOYSA-N 0.000 description 1
- ZFIQGRISGKSVAG-UHFFFAOYSA-N 4-methylaminophenol Chemical compound CNC1=CC=C(O)C=C1 ZFIQGRISGKSVAG-UHFFFAOYSA-N 0.000 description 1
- 229920001817 Agar Polymers 0.000 description 1
- 241000206672 Gelidium Species 0.000 description 1
- AEMRFAOFKBGASW-UHFFFAOYSA-N Glycolic acid Chemical class OCC(O)=O AEMRFAOFKBGASW-UHFFFAOYSA-N 0.000 description 1
- 206010034960 Photophobia Diseases 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- ZMZDMBWJUHKJPS-UHFFFAOYSA-M Thiocyanate anion Chemical compound [S-]C#N ZMZDMBWJUHKJPS-UHFFFAOYSA-M 0.000 description 1
- 229920002494 Zein Polymers 0.000 description 1
- QMJDEXCUIQJLGO-UHFFFAOYSA-N [4-(methylamino)phenyl] hydrogen sulfate Chemical compound CNC1=CC=C(OS(O)(=O)=O)C=C1 QMJDEXCUIQJLGO-UHFFFAOYSA-N 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 235000010419 agar Nutrition 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 235000016720 allyl isothiocyanate Nutrition 0.000 description 1
- HTKFORQRBXIQHD-UHFFFAOYSA-N allylthiourea Chemical compound NC(=S)NCC=C HTKFORQRBXIQHD-UHFFFAOYSA-N 0.000 description 1
- 229960001748 allylthiourea Drugs 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- WVCXSPJPERKPJS-UHFFFAOYSA-L azane;dichloropalladium;hydrate Chemical compound N.N.N.N.O.Cl[Pd]Cl WVCXSPJPERKPJS-UHFFFAOYSA-L 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical class OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002301 cellulose acetate Polymers 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 150000001991 dicarboxylic acids Chemical class 0.000 description 1
- 230000029087 digestion Effects 0.000 description 1
- 150000004820 halides Chemical class 0.000 description 1
- IXCSERBJSXMMFS-UHFFFAOYSA-N hcl hcl Chemical compound Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 1
- ZMZDMBWJUHKJPS-UHFFFAOYSA-N hydrogen thiocyanate Natural products SC#N ZMZDMBWJUHKJPS-UHFFFAOYSA-N 0.000 description 1
- CBEQRNSPHCCXSH-UHFFFAOYSA-N iodine monobromide Chemical compound IBr CBEQRNSPHCCXSH-UHFFFAOYSA-N 0.000 description 1
- 208000013469 light sensitivity Diseases 0.000 description 1
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 description 1
- 239000011976 maleic acid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229960002523 mercuric chloride Drugs 0.000 description 1
- 150000002730 mercury Chemical class 0.000 description 1
- LWJROJCJINYWOX-UHFFFAOYSA-L mercury dichloride Chemical compound Cl[Hg]Cl LWJROJCJINYWOX-UHFFFAOYSA-L 0.000 description 1
- DZVCFNFOPIZQKX-LTHRDKTGSA-M merocyanine Chemical compound [Na+].O=C1N(CCCC)C(=O)N(CCCC)C(=O)C1=C\C=C\C=C/1N(CCCS([O-])(=O)=O)C2=CC=CC=C2O\1 DZVCFNFOPIZQKX-LTHRDKTGSA-M 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000025 natural resin Substances 0.000 description 1
- PIBWKRNGBLPSSY-UHFFFAOYSA-L palladium(II) chloride Chemical compound Cl[Pd]Cl PIBWKRNGBLPSSY-UHFFFAOYSA-L 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920002689 polyvinyl acetate Polymers 0.000 description 1
- 239000011118 polyvinyl acetate Substances 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 150000003378 silver Chemical class 0.000 description 1
- ZUNKMNLKJXRCDM-UHFFFAOYSA-N silver bromoiodide Chemical compound [Ag].IBr ZUNKMNLKJXRCDM-UHFFFAOYSA-N 0.000 description 1
- 229910001961 silver nitrate Inorganic materials 0.000 description 1
- AKHNMLFCWUSKQB-UHFFFAOYSA-L sodium thiosulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=S AKHNMLFCWUSKQB-UHFFFAOYSA-L 0.000 description 1
- 235000019345 sodium thiosulphate Nutrition 0.000 description 1
- 125000005504 styryl group Chemical group 0.000 description 1
- 150000003464 sulfur compounds Chemical class 0.000 description 1
- DHCDFWKWKRSZHF-UHFFFAOYSA-N sulfurothioic S-acid Chemical compound OS(O)(=O)=S DHCDFWKWKRSZHF-UHFFFAOYSA-N 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- ANRHNWWPFJCPAZ-UHFFFAOYSA-M thionine Chemical compound [Cl-].C1=CC(N)=CC2=[S+]C3=CC(N)=CC=C3N=C21 ANRHNWWPFJCPAZ-UHFFFAOYSA-M 0.000 description 1
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 239000005019 zein Substances 0.000 description 1
- 229940093612 zein Drugs 0.000 description 1
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
Definitions
- the amounts may range from 1.73 to 912 mg. per 486 g. of silver in the emulsions. Photographically equivalent amounts of other sulfur sensitizers can be used.
- the gold, palladium and mercury salts are added to the colloid silver halide emulsions after the silver salts have been precipitated and the wate'r-solubl e salts have been removed.
- the set which have improved speed and contrast.
- a reand washed emulsion is liquefied, the small lated object is to produce such emulsions which 10 amount of sulfur sensitizer is added, and the have relatively low fog levels.
- a further object emulsion adjusted to a pH from 5.5 to 6.5. A is to produce such emulsions with relatively mixture of chlorauric acid, palljadium chloride available simple chemicals.
- Still otherobjfects and mercuric chloride is added to the emulsion will be apparent from the following description from an aqueous solution.
- carbobi-nding agent e; g., gelatin, whi chcontains small cyanine, merocyanine, pseudocyanine, or styryl amounts of a sulfur sensitiz'er and very small 0 dye,- can be added to the emulsion prior to or subamounts of gold,- palladium and mercury.
- sulfur sen-sitizer may be one of the naturally 0c
- the invention will be further illustrated but curring sulfur compounds which are present. in is not intended to be limited by the following exphotographic gelatin or they may be added sulainples. :fur compounds, e.
- Other salts can be used sodium sulfite (anhydrous) g 75.0 in chemically equivalent amounts.
- Borax g 5.0 sodium sulfite (anhydrous) g 75.0 in chemically equivalent amounts.
- the amount of sulfur sensitizer will also vary Water to 1 liter. depending on the: chemical constitution of the v for 9 minutes at 68 F. with the results listed in particular compound used. In the'caseof sodium the following. table:
- colloids include agar-agar, polyclycuronic acids, zein, collodion, water-soluble cellulose derivatives, such as substantially hydrolyzed cellulose acetate, cellulose esters of hydroxy monocarboxylic acids, e.
- lactic or glycolic acids alkali metal salts of cellulose esters of dicarboxylic acids, such as phthalic acid, polyvinyl alcohol, partially hydrolyzed polyvinyl acetate and interpolymers thereof with unsaturated Concentration 6 l0- Molar 5 222 Gem. Fog Nazszoi, Chlorauric Palladium Mercuric P cc. Acid, cc. Chloride, cc. Chloride. cc.
- Example III A gelatino-silver iodobromide emulsion of the type disclosed in Example II was prepared using inert gelatin and the additions listed in the following table made. The emulsions were coated and tested as in Example II with the results tabulated below:
- hydrophilic colloids of the above types are described in United States Patents 2,110,491, 2,276,322, 2,276,323, 2,286,215, and 2,211,323.
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)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US3366448 US2540086A (en) | 1948-06-17 | 1948-06-17 | Silver halibe emulsions |
| GB1620549A GB658588A (enrdf_load_stackoverflow) | 1948-06-17 | 1949-06-17 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US3366448 US2540086A (en) | 1948-06-17 | 1948-06-17 | Silver halibe emulsions |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2540086A true US2540086A (en) | 1951-02-06 |
Family
ID=21871722
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US3366448 Expired - Lifetime US2540086A (en) | 1948-06-17 | 1948-06-17 | Silver halibe emulsions |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US2540086A (enrdf_load_stackoverflow) |
| GB (1) | GB658588A (enrdf_load_stackoverflow) |
Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2598079A (en) * | 1948-08-31 | 1952-05-27 | Eastman Kodak Co | High-speed photographic silver halide emulsions supersensitized with palladium salts |
| US2706157A (en) * | 1951-07-21 | 1955-04-12 | Grant Photo Products Inc | Processing photographic paper and film |
| US2728664A (en) * | 1952-11-08 | 1955-12-27 | Eastman Kodak Co | Photographic emulsions containing mercury salts |
| US2728667A (en) * | 1952-11-08 | 1955-12-27 | Eastman Kodak Co | Molecular compounds of mercury salts with benzothiazoles as fog inhibitors in a silver halide emulsion |
| US2728666A (en) * | 1952-11-08 | 1955-12-27 | Eastman Kodak Co | Stabilization of emulsions sensitized with alkylene oxide polymers |
| US2728665A (en) * | 1952-11-08 | 1955-12-27 | Eastman Kodak Co | Photographic emulsions containing mercuric compounds having carbon-mercury bond |
| US2728663A (en) * | 1952-11-08 | 1955-12-27 | Eastman Kodak Co | Photographic emulsions containing molecular compounds of mercuric salts with amines |
| US2732302A (en) * | 1956-01-24 | Silver halide emulsion containing mo- | ||
| US2739060A (en) * | 1952-11-08 | 1956-03-20 | Eastman Kodak Co | Chemical sensitization of photographic emulsions |
| US2743183A (en) * | 1952-11-08 | 1956-04-24 | Eastman Kodak Co | Chemical sensitization of photographic emulsions |
| US2743182A (en) * | 1952-11-08 | 1956-04-24 | Eastman Kodak Co | Chemical sensitization of photographic emulsions |
| US2784090A (en) * | 1952-11-08 | 1957-03-05 | Eastman Kodak Co | Stabilization of emulsions sensitized with onium compounds |
| US2953455A (en) * | 1957-08-28 | 1960-09-20 | Du Pont | Photographic silver halide emulsions containing a ruthenium, palladium or platinum hydroxide in stabilizing amounts and process for preparing the same |
| DE975475C (de) * | 1952-11-08 | 1961-12-07 | Eastman Kodak Co | Stabilisiertes photographisches Material |
| US3179520A (en) * | 1962-02-23 | 1965-04-20 | Fuji Photo Film Co Ltd | Sensitized photographic silver halide emulsions |
| US4092171A (en) * | 1976-02-20 | 1978-05-30 | E. I. Du Pont De Nemours And Company | Organophosphine chelates of platinum and palladium as sensitizers |
| EP0124795A2 (en) | 1983-04-11 | 1984-11-14 | Fuji Photo Film Co., Ltd. | Silver halide photographic emulsion |
| US5112733A (en) * | 1989-05-31 | 1992-05-12 | Fuji Photo Film Co., Ltd. | Silver halide photographic emulsion |
| US5759760A (en) * | 1997-06-04 | 1998-06-02 | Eastman Kodak Company | Aqueous solid particle dispersions in chemical sensitization |
| US5763154A (en) * | 1996-08-07 | 1998-06-09 | Eastman Kodak Company | Palladium chemical sensitizers for silver halides |
| WO2012035314A1 (en) | 2010-09-17 | 2012-03-22 | Fujifilm Manufacturing Europe Bv | Photographic paper |
| WO2021213762A1 (en) | 2020-04-24 | 2021-10-28 | Fujifilm Manufacturing Europe Bv | Photographic paper |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2059642A (en) * | 1934-03-10 | 1936-11-03 | Kankelwitz Bruno | Process for manufacturing photographic silver halide developing emulsions durably free from grey and yellow fogging and of durable quality |
| US2448060A (en) * | 1945-08-30 | 1948-08-31 | Eastman Kodak Co | Photographic emulsions sensitized with salts of metals of group viii of the periodicarrangement of the elements |
-
1948
- 1948-06-17 US US3366448 patent/US2540086A/en not_active Expired - Lifetime
-
1949
- 1949-06-17 GB GB1620549A patent/GB658588A/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2059642A (en) * | 1934-03-10 | 1936-11-03 | Kankelwitz Bruno | Process for manufacturing photographic silver halide developing emulsions durably free from grey and yellow fogging and of durable quality |
| US2448060A (en) * | 1945-08-30 | 1948-08-31 | Eastman Kodak Co | Photographic emulsions sensitized with salts of metals of group viii of the periodicarrangement of the elements |
Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2732302A (en) * | 1956-01-24 | Silver halide emulsion containing mo- | ||
| US2598079A (en) * | 1948-08-31 | 1952-05-27 | Eastman Kodak Co | High-speed photographic silver halide emulsions supersensitized with palladium salts |
| US2706157A (en) * | 1951-07-21 | 1955-04-12 | Grant Photo Products Inc | Processing photographic paper and film |
| US2743182A (en) * | 1952-11-08 | 1956-04-24 | Eastman Kodak Co | Chemical sensitization of photographic emulsions |
| DE975475C (de) * | 1952-11-08 | 1961-12-07 | Eastman Kodak Co | Stabilisiertes photographisches Material |
| US2728665A (en) * | 1952-11-08 | 1955-12-27 | Eastman Kodak Co | Photographic emulsions containing mercuric compounds having carbon-mercury bond |
| US2728663A (en) * | 1952-11-08 | 1955-12-27 | Eastman Kodak Co | Photographic emulsions containing molecular compounds of mercuric salts with amines |
| US2728667A (en) * | 1952-11-08 | 1955-12-27 | Eastman Kodak Co | Molecular compounds of mercury salts with benzothiazoles as fog inhibitors in a silver halide emulsion |
| US2739060A (en) * | 1952-11-08 | 1956-03-20 | Eastman Kodak Co | Chemical sensitization of photographic emulsions |
| US2743183A (en) * | 1952-11-08 | 1956-04-24 | Eastman Kodak Co | Chemical sensitization of photographic emulsions |
| US2728664A (en) * | 1952-11-08 | 1955-12-27 | Eastman Kodak Co | Photographic emulsions containing mercury salts |
| US2784090A (en) * | 1952-11-08 | 1957-03-05 | Eastman Kodak Co | Stabilization of emulsions sensitized with onium compounds |
| US2728666A (en) * | 1952-11-08 | 1955-12-27 | Eastman Kodak Co | Stabilization of emulsions sensitized with alkylene oxide polymers |
| US2953455A (en) * | 1957-08-28 | 1960-09-20 | Du Pont | Photographic silver halide emulsions containing a ruthenium, palladium or platinum hydroxide in stabilizing amounts and process for preparing the same |
| US3179520A (en) * | 1962-02-23 | 1965-04-20 | Fuji Photo Film Co Ltd | Sensitized photographic silver halide emulsions |
| US4092171A (en) * | 1976-02-20 | 1978-05-30 | E. I. Du Pont De Nemours And Company | Organophosphine chelates of platinum and palladium as sensitizers |
| EP0124795A2 (en) | 1983-04-11 | 1984-11-14 | Fuji Photo Film Co., Ltd. | Silver halide photographic emulsion |
| US5112733A (en) * | 1989-05-31 | 1992-05-12 | Fuji Photo Film Co., Ltd. | Silver halide photographic emulsion |
| US5763154A (en) * | 1996-08-07 | 1998-06-09 | Eastman Kodak Company | Palladium chemical sensitizers for silver halides |
| US5759760A (en) * | 1997-06-04 | 1998-06-02 | Eastman Kodak Company | Aqueous solid particle dispersions in chemical sensitization |
| WO2012035314A1 (en) | 2010-09-17 | 2012-03-22 | Fujifilm Manufacturing Europe Bv | Photographic paper |
| WO2021213762A1 (en) | 2020-04-24 | 2021-10-28 | Fujifilm Manufacturing Europe Bv | Photographic paper |
Also Published As
| Publication number | Publication date |
|---|---|
| GB658588A (enrdf_load_stackoverflow) |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US2540086A (en) | Silver halibe emulsions | |
| US3930867A (en) | Macrocyclic polyamines as sensitizers for silver halide emulsions | |
| US2423549A (en) | Silver halide photographic emulsions sensitized by polyalkylene glycols | |
| US2487850A (en) | Chemical sensitization of photographic emulsions | |
| GB635841A (en) | Improvements in photographic silver halide emulsions | |
| US3155514A (en) | Photographic compositions and elements | |
| US3150977A (en) | Light-sensitive photographic materials | |
| US3672901A (en) | Process of precipitating silver halide in the presence of a colloid and a water-soluble iron salt | |
| US3033682A (en) | Radiation-sensitive emulsions, elements, and processes for making same | |
| US2598079A (en) | High-speed photographic silver halide emulsions supersensitized with palladium salts | |
| US3658527A (en) | Oxidation inhibitors for photographic materials | |
| US2628167A (en) | Method of making colloid silver halide emulsions containing thallium | |
| US3386831A (en) | Stabilizing of photographic silver halide emulsions with acyl phenyl hydrazides | |
| US3849146A (en) | Direct-print light-developable silver halide emulsion containing cyclic dioxide or selenone as sensitizer | |
| US2666700A (en) | Process of preparing a light sensitive silver halide emulsion | |
| US2540085A (en) | Silver halide emulsions | |
| GB819039A (en) | Preparation of photographic emulsions | |
| US4054457A (en) | Silver halide emulsions containing hexathiocane thiones as sensitizers | |
| US3857711A (en) | Silver halide photographic emulsion sensitized with a heterocyclic compound containing 4-sulfur atoms | |
| JPS5832370B2 (ja) | リスガタシヤシンカンコウザイリヨウノ セイゾウホウホウ | |
| US3556797A (en) | Cobalt (ii) and manganese (ii) chelates as photographic emulsion antifoggants | |
| US4116697A (en) | Sulfur-substituted isothioureas in silver halide emulsions | |
| US3458316A (en) | Light sensitive silver halide emulsions | |
| US3326690A (en) | Silver halide emulsions with increased sensitivity | |
| US3779777A (en) | Silver halide emulsion sensitized with a polyhedral haloborane |