US3658547A - Silver halide photographic emulsions containing phenozine-n-oxides desensitizers - Google Patents
Silver halide photographic emulsions containing phenozine-n-oxides desensitizers Download PDFInfo
- Publication number
- US3658547A US3658547A US17316A US3658547DA US3658547A US 3658547 A US3658547 A US 3658547A US 17316 A US17316 A US 17316A US 3658547D A US3658547D A US 3658547DA US 3658547 A US3658547 A US 3658547A
- Authority
- US
- United States
- Prior art keywords
- silver halide
- halide photographic
- compound
- emulsion
- sensitivity
- 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
- -1 Silver halide Chemical class 0.000 title claims abstract description 46
- 239000000839 emulsion Substances 0.000 title claims abstract description 44
- 229910052709 silver Inorganic materials 0.000 title claims abstract description 43
- 239000004332 silver Substances 0.000 title claims abstract description 43
- 229940090898 Desensitizer Drugs 0.000 title description 3
- 150000001875 compounds Chemical class 0.000 claims description 33
- 230000035945 sensitivity Effects 0.000 claims description 19
- 239000000975 dye Substances 0.000 abstract description 8
- VEPOHXYIFQMVHW-XOZOLZJESA-N 2,3-dihydroxybutanedioic acid (2S,3S)-3,4-dimethyl-2-phenylmorpholine Chemical compound OC(C(O)C(O)=O)C(O)=O.C[C@H]1[C@@H](OCCN1C)c1ccccc1 VEPOHXYIFQMVHW-XOZOLZJESA-N 0.000 abstract description 2
- PCNDJXKNXGMECE-UHFFFAOYSA-N Phenazine Natural products C1=CC=CC2=NC3=CC=CC=C3N=C21 PCNDJXKNXGMECE-UHFFFAOYSA-N 0.000 abstract description 2
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 6
- 125000000217 alkyl group Chemical group 0.000 description 5
- FFISWZPYNKWIRR-UHFFFAOYSA-N 5-oxidophenazin-5-ium Chemical class C1=CC=C2[N+]([O-])=C(C=CC=C3)C3=NC2=C1 FFISWZPYNKWIRR-UHFFFAOYSA-N 0.000 description 4
- 125000003277 amino group Chemical group 0.000 description 4
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 3
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 125000003545 alkoxy group Chemical group 0.000 description 3
- 125000005843 halogen group Chemical group 0.000 description 3
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 3
- PAYRUJLWNCNPSJ-UHFFFAOYSA-N Aniline Chemical compound NC1=CC=CC=C1 PAYRUJLWNCNPSJ-UHFFFAOYSA-N 0.000 description 2
- 229920002284 Cellulose triacetate Polymers 0.000 description 2
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- QIGBRXMKCJKVMJ-UHFFFAOYSA-N Hydroquinone Chemical compound OC1=CC=C(O)C=C1 QIGBRXMKCJKVMJ-UHFFFAOYSA-N 0.000 description 2
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 2
- NNLVGZFZQQXQNW-ADJNRHBOSA-N [(2r,3r,4s,5r,6s)-4,5-diacetyloxy-3-[(2s,3r,4s,5r,6r)-3,4,5-triacetyloxy-6-(acetyloxymethyl)oxan-2-yl]oxy-6-[(2r,3r,4s,5r,6s)-4,5,6-triacetyloxy-2-(acetyloxymethyl)oxan-3-yl]oxyoxan-2-yl]methyl acetate Chemical compound O([C@@H]1O[C@@H]([C@H]([C@H](OC(C)=O)[C@H]1OC(C)=O)O[C@H]1[C@@H]([C@@H](OC(C)=O)[C@H](OC(C)=O)[C@@H](COC(C)=O)O1)OC(C)=O)COC(=O)C)[C@@H]1[C@@H](COC(C)=O)O[C@@H](OC(C)=O)[C@H](OC(C)=O)[C@H]1OC(C)=O NNLVGZFZQQXQNW-ADJNRHBOSA-N 0.000 description 2
- 125000003118 aryl group Chemical group 0.000 description 2
- 239000000460 chlorine Substances 0.000 description 2
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 2
- LQNUZADURLCDLV-UHFFFAOYSA-N nitrobenzene Chemical compound [O-][N+](=O)C1=CC=CC=C1 LQNUZADURLCDLV-UHFFFAOYSA-N 0.000 description 2
- IOLCXVTUBQKXJR-UHFFFAOYSA-M potassium bromide Chemical compound [K+].[Br-] IOLCXVTUBQKXJR-UHFFFAOYSA-M 0.000 description 2
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 2
- ZUNKMNLKJXRCDM-UHFFFAOYSA-N silver bromoiodide Chemical compound [Ag].IBr ZUNKMNLKJXRCDM-UHFFFAOYSA-N 0.000 description 2
- WOAHJDHKFWSLKE-UHFFFAOYSA-N 1,2-benzoquinone Chemical compound O=C1C=CC=CC1=O WOAHJDHKFWSLKE-UHFFFAOYSA-N 0.000 description 1
- GEYOCULIXLDCMW-UHFFFAOYSA-N 1,2-phenylenediamine Chemical compound NC1=CC=CC=C1N GEYOCULIXLDCMW-UHFFFAOYSA-N 0.000 description 1
- RUFPHBVGCFYCNW-UHFFFAOYSA-N 1-naphthylamine Chemical compound C1=CC=C2C(N)=CC=CC2=C1 RUFPHBVGCFYCNW-UHFFFAOYSA-N 0.000 description 1
- RBTBFTRPCNLSDE-UHFFFAOYSA-N 3,7-bis(dimethylamino)phenothiazin-5-ium Chemical compound C1=CC(N(C)C)=CC2=[S+]C3=CC(N(C)C)=CC=C3N=C21 RBTBFTRPCNLSDE-UHFFFAOYSA-N 0.000 description 1
- ZVNPWFOVUDMGRP-UHFFFAOYSA-N 4-methylaminophenol sulfate Chemical compound OS(O)(=O)=O.CNC1=CC=C(O)C=C1.CNC1=CC=C(O)C=C1 ZVNPWFOVUDMGRP-UHFFFAOYSA-N 0.000 description 1
- ZXQHSPWBYMLHLB-BXTVWIJMSA-M 6-ethoxy-1-methyl-2-[(e)-2-(3-nitrophenyl)ethenyl]quinolin-1-ium;methyl sulfate Chemical compound COS([O-])(=O)=O.C1=CC2=CC(OCC)=CC=C2[N+](C)=C1\C=C\C1=CC=CC([N+]([O-])=O)=C1 ZXQHSPWBYMLHLB-BXTVWIJMSA-M 0.000 description 1
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 1
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 240000007673 Origanum vulgare Species 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 235000010724 Wisteria floribunda Nutrition 0.000 description 1
- 238000007361 Wohl-Aue reaction Methods 0.000 description 1
- XCFIVNQHHFZRNR-UHFFFAOYSA-N [Ag].Cl[IH]Br Chemical compound [Ag].Cl[IH]Br XCFIVNQHHFZRNR-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 125000003282 alkyl amino group Chemical group 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229940101006 anhydrous sodium sulfite Drugs 0.000 description 1
- QVQLCTNNEUAWMS-UHFFFAOYSA-N barium oxide Chemical compound [Ba]=O QVQLCTNNEUAWMS-UHFFFAOYSA-N 0.000 description 1
- 229910001864 baryta Inorganic materials 0.000 description 1
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 1
- 229910052794 bromium Inorganic materials 0.000 description 1
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 238000006482 condensation reaction Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 239000003975 dentin desensitizing agent Substances 0.000 description 1
- 125000004663 dialkyl amino group Chemical group 0.000 description 1
- MQRJBSHKWOFOGF-UHFFFAOYSA-L disodium;carbonate;hydrate Chemical compound O.[Na+].[Na+].[O-]C([O-])=O MQRJBSHKWOFOGF-UHFFFAOYSA-L 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 229910052740 iodine Inorganic materials 0.000 description 1
- 239000011630 iodine Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229960000907 methylthioninium chloride Drugs 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 125000000449 nitro group Chemical group [O-][N+](*)=O 0.000 description 1
- 239000012454 non-polar solvent Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 150000002988 phenazines Chemical class 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- SOUHUMACVWVDME-UHFFFAOYSA-N safranin O Chemical compound [Cl-].C12=CC(N)=CC=C2N=C2C=CC(N)=CC2=[N+]1C1=CC=CC=C1 SOUHUMACVWVDME-UHFFFAOYSA-N 0.000 description 1
- ADZWSOLPGZMUMY-UHFFFAOYSA-M silver bromide Chemical compound [Ag]Br ADZWSOLPGZMUMY-UHFFFAOYSA-M 0.000 description 1
- 229940076133 sodium carbonate monohydrate Drugs 0.000 description 1
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- G03C1/36—Desensitisers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S430/00—Radiation imagery chemistry: process, composition, or product thereof
- Y10S430/167—X-ray
Definitions
- ABSTRACT Foreign Application Priority Data Photographic silver halide emulsion and photographic elements containing same, said elements containing certain Mar. 7, Japan henazine desensitizing dyes
- the dyes of this invention elec. tively desensitize the silver halide emulsion to visible light, as [5 U.S. Cl ..96/10l contrasted i x ⁇ 51 ..G03c 1/36
- the present invention relates to a silver halide photographic emulsion having selectively reduced sensitivity to visible light and, more particularly, to a silver halide photographic emulsion of which the sensitivity to visible light has been reduced without reducing sensitivity to X-rays.
- the sensitivity thereof to X-rays is in direct proportion to sensitivity to visible light.
- An object of the present invention is to provide a specific silver halide photographic emulsion, the sensitivity of which to visible light has been selectively reduced without reducing the sensitivity thereof to X-rays, whereby it becomes possible to handle the light-sensitive element made from such a light-sensitive photographic emulsion under visible light after the lightsensitive element is exposed to X-rays.
- Another object of the present invention is to provide a desensitizing agent capable of reducing selectively the sensitivity of a silver halide photographic emulsion to visible light without reducing the sensitivity thereof to X-rays.
- an ordinary desensitizing dye such as pinakryptol yellow, phenosafranine, methylene blue and the like, the sensitivity of a silver halide photographic emulsion to X-rays may be reduced considerably, but these materials tend to remain after development as stains.
- R R R and R each represents a hydrogen atom, an alkyl group (e.g. lower alkyl), an aryl group (e.g. phenyl), a nitro group, a hydroxyl group, an alkoxy group eg lower alkoxy), a halogen atom, an amino group or a substituted amino group, or said R, and R or said R and R may be condensed with each other to form a benzene ring.
- R R R R and R each represents a hydrogen atom, an alkyl group (e.g. lower alkyl), an aryl group (e.g. phenyl), a nitro group, a hydroxyl group, an alkoxy group eg lower alkoxy), a halogen atom, an amino group or a substituted amino group, or said R, and R or said R and R may be condensed with each other to form a benzene ring.
- phenazine derivatives as desensitizing dyes is known but it has never been known that the phenazine oxide derivatives employed in the present invention selectively desensitize a silver halide photographic emulsion to visible light while having much less effect upon the sensitivity of the emulsion to X-rays.
- the aforesaid compound to be used in the present invention has the advantage that when the compound is incorporated into a silver halide photographic emulsion layer of a photographic light-sensitive element, less stain is left after the light-sensitive element is developed and, further, since the absorption wave length of the compound is in the short wave length region, any stain which may remain after development, is inconspicuous.
- the aforesaid phenazine oxide derivative used in the present invention may be incorporated into a silver halide photographic emulsion as a solution in a water-miscible organic solvent such as methanol, ethanol, acetone, pyridine and the like.
- the amount of the compound to be incorporated in the silver halide photographic emulsion is preferably 1.5 X 10 to l X 10' mole per mole of silver halide in the silver halide emulsion.
- the silver halide photographic emulsion there may be profitably used a silver iodobromide emulsion, a silver bromide emulsion, and a silver chloroiodo-bromide emulsion.
- the silver halide photographic emulsion containing the above-mentioned desensitizing dye may be applied to any suitable support, such as a cellulose triacetate film, a polyethylene terephthalate film, a baryta-coated paper, a resin-coated paper or other plastic film.
- phenazine oxide derivatives used in the present invention may be prepared by either of the following well known methods:
- a desired amount of a methanol solution of the compound of this invention in a desired concentration was added to the system followed by stirring.
- the resultant silver halide emulsion was applied to a cellulose triacetate film in a thickness of 7.5 microns i 0.5 micron and dried to provide a silver halide photographic light-sensitive film.
- the photographic light-sensitive film thus prepared was cut into two portions.
- One specimen was exposed to X-rays using an X-ray source of 75 k. V. and 6 amp. through an aluminum 3 ,6 5 8 ,5 47 5 6 wedge of a definte thickness.
- the other specimen was exposed N for 8 minutes to a daylight source through a yellow filter for safe light'(More Light; made by Eastman Kodak Co.) under definite conditions.
- the specimen films thus exposed were developed for 4 5 minutes at 20 C. in a developer having the following composition and then fixed Metol 4 g. Anhydrous sodium sulfite 60 g. 10 OH 10 g Hydroquinone ⁇ N/ Sodium carbonate mono-hydrate 53 g. 8 Potassium bromide 2.5 g. Water to make 1 liter N 0 0211
- the relative sensitivity to X-rays and the density of fog by yellow light of the various specimens were measured, the ⁇ N// results of which measurements are shown in the following ta- 1 ble. 0
- Amount Relative Fog den- Compound and cone. of the of solution sensitivity sity by yel No. solution of the compound (ml.) to X'-rays low light 1 None 325 3.
- C A silver halide photographic emulsion having a reduced sensitivity to visible light and a high sensitivity to x-rays con.-
- moo sisting essentially of a desensitizmg amount of a compound represented by the general formula selected from the group i consisting of CH a N l N R3 11 R4 0 and O T o N I RX Re I CH3 s J1 R4 ⁇ N/ wherein R R R and R each is selected from the group consisting of hydrogen, alkyl, aryl, nitro, hydroxyl, alkoxy,
- a silver halide photographic light-sensitive element for NHCOCH3 X-ray photography comprising a support having thereon a layer of silver halide photographic emulsion as set forth in claim 1.
- a silver halide photographic emulsion having a reduced sensitivity to visible light and a high sensitivity to X-rays consisting essentially of a compound selected from the group con- NHCOCH;
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)
- Heterocyclic Carbon Compounds Containing A Hetero Ring Having Nitrogen And Oxygen As The Only Ring Hetero Atoms (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP44017259A JPS4832366B1 (cs) | 1969-03-07 | 1969-03-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US3658547A true US3658547A (en) | 1972-04-25 |
Family
ID=11938949
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US17316A Expired - Lifetime US3658547A (en) | 1969-03-07 | 1970-03-06 | Silver halide photographic emulsions containing phenozine-n-oxides desensitizers |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US3658547A (cs) |
| JP (1) | JPS4832366B1 (cs) |
| BE (1) | BE746882A (cs) |
| DE (1) | DE2010765A1 (cs) |
| FR (1) | FR2037800A5 (cs) |
| GB (1) | GB1263868A (cs) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4472497A (en) * | 1983-02-18 | 1984-09-18 | Minnesota Mining And Manufacturing Company | White light handleable photographic materials |
| US4539291A (en) * | 1982-12-24 | 1985-09-03 | Fuji Photo Film Co., Ltd. | Direct positive silver halide photographic materials |
| DE4119505A1 (de) * | 1991-06-13 | 1992-12-17 | Du Pont Deutschland | Verfahren zur herstellung eines radiographischen aufzeichnungsmaterials mit geringer lichtempfindlichkeit |
| US5783379A (en) * | 1995-07-18 | 1998-07-21 | Agfa-Gevaert, N.V. | X-ray silver halide photographic material suitable for maintenance in bright darkroom lighting conditions |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3237008A (en) * | 1961-01-19 | 1966-02-22 | Eastman Kodak Co | Roomlight handling radiographic element including an x-ray sensitive layer overcoated with a dye desensitized silver halide emulsion |
| US3250618A (en) * | 1959-05-13 | 1966-05-10 | Eastman Kodak Co | Thermal resensitization of desensitized silver halide photographic emulsions |
| US3340063A (en) * | 1963-09-04 | 1967-09-05 | Eastman Kodak Co | Photographic colloid transfer system |
| US3403025A (en) * | 1965-08-25 | 1968-09-24 | Eastman Kodak Co | Desensitization of silver halides to visible radiation with thiuram disulfides |
-
1969
- 1969-03-07 JP JP44017259A patent/JPS4832366B1/ja active Pending
-
1970
- 1970-03-05 GB GB00640/70A patent/GB1263868A/en not_active Expired
- 1970-03-05 BE BE746882D patent/BE746882A/xx unknown
- 1970-03-06 US US17316A patent/US3658547A/en not_active Expired - Lifetime
- 1970-03-06 DE DE19702010765 patent/DE2010765A1/de active Pending
- 1970-03-09 FR FR7008277A patent/FR2037800A5/fr not_active Expired
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3250618A (en) * | 1959-05-13 | 1966-05-10 | Eastman Kodak Co | Thermal resensitization of desensitized silver halide photographic emulsions |
| US3237008A (en) * | 1961-01-19 | 1966-02-22 | Eastman Kodak Co | Roomlight handling radiographic element including an x-ray sensitive layer overcoated with a dye desensitized silver halide emulsion |
| US3340063A (en) * | 1963-09-04 | 1967-09-05 | Eastman Kodak Co | Photographic colloid transfer system |
| US3403025A (en) * | 1965-08-25 | 1968-09-24 | Eastman Kodak Co | Desensitization of silver halides to visible radiation with thiuram disulfides |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4539291A (en) * | 1982-12-24 | 1985-09-03 | Fuji Photo Film Co., Ltd. | Direct positive silver halide photographic materials |
| US4472497A (en) * | 1983-02-18 | 1984-09-18 | Minnesota Mining And Manufacturing Company | White light handleable photographic materials |
| DE4119505A1 (de) * | 1991-06-13 | 1992-12-17 | Du Pont Deutschland | Verfahren zur herstellung eines radiographischen aufzeichnungsmaterials mit geringer lichtempfindlichkeit |
| US5783379A (en) * | 1995-07-18 | 1998-07-21 | Agfa-Gevaert, N.V. | X-ray silver halide photographic material suitable for maintenance in bright darkroom lighting conditions |
Also Published As
| Publication number | Publication date |
|---|---|
| BE746882A (fr) | 1970-08-17 |
| GB1263868A (en) | 1972-02-16 |
| JPS4832366B1 (cs) | 1973-10-05 |
| DE2010765A1 (de) | 1970-09-24 |
| FR2037800A5 (cs) | 1970-12-31 |
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