US3674491A - Developing process - Google Patents
Developing process Download PDFInfo
- Publication number
- US3674491A US3674491A US93672A US3674491DA US3674491A US 3674491 A US3674491 A US 3674491A US 93672 A US93672 A US 93672A US 3674491D A US3674491D A US 3674491DA US 3674491 A US3674491 A US 3674491A
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- US
- United States
- Prior art keywords
- compound
- developing
- developing solution
- carbon atoms
- gamma
- Prior art date
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- Expired - Lifetime
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- 238000000034 method Methods 0.000 title abstract description 38
- 150000001875 compounds Chemical class 0.000 abstract description 56
- -1 SILVER HALIDE Chemical class 0.000 abstract description 19
- 239000000463 material Substances 0.000 abstract description 16
- 229910052709 silver Inorganic materials 0.000 abstract description 10
- 239000004332 silver Substances 0.000 abstract description 10
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract 5
- YZCKVEUIGOORGS-UHFFFAOYSA-N Hydrogen atom Chemical group [H] YZCKVEUIGOORGS-UHFFFAOYSA-N 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 61
- 125000004432 carbon atom Chemical group C* 0.000 description 12
- IOLCXVTUBQKXJR-UHFFFAOYSA-M potassium bromide Chemical compound [K+].[Br-] IOLCXVTUBQKXJR-UHFFFAOYSA-M 0.000 description 12
- QIGBRXMKCJKVMJ-UHFFFAOYSA-N Hydroquinone Chemical compound OC1=CC=C(O)C=C1 QIGBRXMKCJKVMJ-UHFFFAOYSA-N 0.000 description 10
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 description 10
- 239000000839 emulsion Substances 0.000 description 8
- 238000011161 development Methods 0.000 description 7
- 230000018109 developmental process Effects 0.000 description 7
- 239000000203 mixture Substances 0.000 description 7
- 230000035945 sensitivity Effects 0.000 description 7
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 6
- 229940125898 compound 5 Drugs 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 125000000217 alkyl group Chemical group 0.000 description 5
- 238000012545 processing Methods 0.000 description 5
- 235000010265 sodium sulphite Nutrition 0.000 description 5
- 230000004304 visual acuity Effects 0.000 description 5
- ZFIQGRISGKSVAG-UHFFFAOYSA-N 4-methylaminophenol Chemical compound CNC1=CC=C(O)C=C1 ZFIQGRISGKSVAG-UHFFFAOYSA-N 0.000 description 4
- 108010010803 Gelatin Proteins 0.000 description 4
- SJOOOZPMQAWAOP-UHFFFAOYSA-N [Ag].BrCl Chemical compound [Ag].BrCl SJOOOZPMQAWAOP-UHFFFAOYSA-N 0.000 description 4
- IOJUPLGTWVMSFF-UHFFFAOYSA-N benzothiazole Chemical compound C1=CC=C2SC=NC2=C1 IOJUPLGTWVMSFF-UHFFFAOYSA-N 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 229920000159 gelatin Polymers 0.000 description 4
- 239000008273 gelatin Substances 0.000 description 4
- 235000019322 gelatine Nutrition 0.000 description 4
- 235000011852 gelatine desserts Nutrition 0.000 description 4
- 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 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
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 229940125782 compound 2 Drugs 0.000 description 3
- MQRJBSHKWOFOGF-UHFFFAOYSA-L disodium;carbonate;hydrate Chemical compound O.[Na+].[Na+].[O-]C([O-])=O MQRJBSHKWOFOGF-UHFFFAOYSA-L 0.000 description 3
- CMCWWLVWPDLCRM-UHFFFAOYSA-N phenidone Chemical compound N1C(=O)CCN1C1=CC=CC=C1 CMCWWLVWPDLCRM-UHFFFAOYSA-N 0.000 description 3
- NLKNQRATVPKPDG-UHFFFAOYSA-M potassium iodide Chemical compound [K+].[I-] NLKNQRATVPKPDG-UHFFFAOYSA-M 0.000 description 3
- 229940076133 sodium carbonate monohydrate Drugs 0.000 description 3
- RMVRSNDYEFQCLF-UHFFFAOYSA-N thiophenol Chemical compound SC1=CC=CC=C1 RMVRSNDYEFQCLF-UHFFFAOYSA-N 0.000 description 3
- SVTBMSDMJJWYQN-UHFFFAOYSA-N 2-methylpentane-2,4-diol Chemical compound CC(O)CC(C)(C)O SVTBMSDMJJWYQN-UHFFFAOYSA-N 0.000 description 2
- CIWBSHSKHKDKBQ-JLAZNSOCSA-N Ascorbic acid Chemical compound OC[C@H](O)[C@H]1OC(=O)C(O)=C1O CIWBSHSKHKDKBQ-JLAZNSOCSA-N 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 2
- LSDPWZHWYPCBBB-UHFFFAOYSA-N Methanethiol Chemical compound SC LSDPWZHWYPCBBB-UHFFFAOYSA-N 0.000 description 2
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 2
- 125000003710 aryl alkyl group Chemical group 0.000 description 2
- 125000003118 aryl group Chemical group 0.000 description 2
- DNJIEGIFACGWOD-UHFFFAOYSA-N ethanethiol Chemical compound CCS DNJIEGIFACGWOD-UHFFFAOYSA-N 0.000 description 2
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 2
- 229910000510 noble metal Inorganic materials 0.000 description 2
- 239000007800 oxidant agent Substances 0.000 description 2
- 229910052700 potassium Inorganic materials 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L sodium carbonate Substances [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 125000000547 substituted alkyl group Chemical group 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- QFLWZFQWSBQYPS-AWRAUJHKSA-N (3S)-3-[[(2S)-2-[[(2S)-2-[5-[(3aS,6aR)-2-oxo-1,3,3a,4,6,6a-hexahydrothieno[3,4-d]imidazol-4-yl]pentanoylamino]-3-methylbutanoyl]amino]-3-(4-hydroxyphenyl)propanoyl]amino]-4-[1-bis(4-chlorophenoxy)phosphorylbutylamino]-4-oxobutanoic acid Chemical compound CCCC(NC(=O)[C@H](CC(O)=O)NC(=O)[C@H](Cc1ccc(O)cc1)NC(=O)[C@@H](NC(=O)CCCCC1SC[C@@H]2NC(=O)N[C@H]12)C(C)C)P(=O)(Oc1ccc(Cl)cc1)Oc1ccc(Cl)cc1 QFLWZFQWSBQYPS-AWRAUJHKSA-N 0.000 description 1
- KGAKGNOATALEJF-UHFFFAOYSA-N 1-methyl-1,3-benzothiazol-1-ium-2-amine Chemical compound C[S+]1C(N)=Nc2ccccc12 KGAKGNOATALEJF-UHFFFAOYSA-N 0.000 description 1
- UHGULLIUJBCTEF-UHFFFAOYSA-N 2-aminobenzothiazole Chemical compound C1=CC=C2SC(N)=NC2=C1 UHGULLIUJBCTEF-UHFFFAOYSA-N 0.000 description 1
- XPAZGLFMMUODDK-UHFFFAOYSA-N 6-nitro-1h-benzimidazole Chemical compound [O-][N+](=O)C1=CC=C2N=CNC2=C1 XPAZGLFMMUODDK-UHFFFAOYSA-N 0.000 description 1
- VGCXGMAHQTYDJK-UHFFFAOYSA-N Chloroacetyl chloride Chemical compound ClCC(Cl)=O VGCXGMAHQTYDJK-UHFFFAOYSA-N 0.000 description 1
- SXRSQZLOMIGNAQ-UHFFFAOYSA-N Glutaraldehyde Chemical compound O=CCCCC=O SXRSQZLOMIGNAQ-UHFFFAOYSA-N 0.000 description 1
- 239000002202 Polyethylene glycol Substances 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 235000010724 Wisteria floribunda Nutrition 0.000 description 1
- 150000001299 aldehydes Chemical class 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 229950003476 aminothiazole Drugs 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 235000006708 antioxidants Nutrition 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000011668 ascorbic acid Substances 0.000 description 1
- 235000010323 ascorbic acid Nutrition 0.000 description 1
- 229960005070 ascorbic acid Drugs 0.000 description 1
- QRUDEWIWKLJBPS-UHFFFAOYSA-N benzotriazole Chemical compound C1=CC=C2N[N][N]C2=C1 QRUDEWIWKLJBPS-UHFFFAOYSA-N 0.000 description 1
- 239000012964 benzotriazole Substances 0.000 description 1
- 229910021538 borax Inorganic materials 0.000 description 1
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 1
- 239000004327 boric acid Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 229940125773 compound 10 Drugs 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229940051250 hexylene glycol Drugs 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- ZLVXBBHTMQJRSX-VMGNSXQWSA-N jdtic Chemical compound C1([C@]2(C)CCN(C[C@@H]2C)C[C@H](C(C)C)NC(=O)[C@@H]2NCC3=CC(O)=CC=C3C2)=CC=CC(O)=C1 ZLVXBBHTMQJRSX-VMGNSXQWSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- CMUZFXFDVGLPGO-UHFFFAOYSA-N n-(1,3-benzothiazol-2-yl)-2-chloroacetamide Chemical compound C1=CC=C2SC(NC(=O)CCl)=NC2=C1 CMUZFXFDVGLPGO-UHFFFAOYSA-N 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 1
- 229940001593 sodium carbonate Drugs 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- NVIFVTYDZMXWGX-UHFFFAOYSA-N sodium metaborate Chemical compound [Na+].[O-]B=O NVIFVTYDZMXWGX-UHFFFAOYSA-N 0.000 description 1
- 239000001488 sodium phosphate Substances 0.000 description 1
- 229910000162 sodium phosphate Inorganic materials 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- 239000004328 sodium tetraborate Substances 0.000 description 1
- 235000010339 sodium tetraborate Nutrition 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 125000001424 substituent group Chemical group 0.000 description 1
- 150000007979 thiazole derivatives Chemical class 0.000 description 1
- ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical compound OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 0.000 description 1
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 description 1
Images
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
- G03C5/00—Photographic processes or agents therefor; Regeneration of such processing agents
- G03C5/26—Processes using silver-salt-containing photosensitive materials or agents therefor
- G03C5/29—Development processes or agents therefor
- G03C5/305—Additives other than developers
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D277/00—Heterocyclic compounds containing 1,3-thiazole or hydrogenated 1,3-thiazole rings
- C07D277/02—Heterocyclic compounds containing 1,3-thiazole or hydrogenated 1,3-thiazole rings not condensed with other rings
- C07D277/20—Heterocyclic compounds containing 1,3-thiazole or hydrogenated 1,3-thiazole rings not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members
- C07D277/32—Heterocyclic compounds containing 1,3-thiazole or hydrogenated 1,3-thiazole rings not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
- C07D277/38—Nitrogen atoms
- C07D277/44—Acylated amino or imino radicals
- C07D277/46—Acylated amino or imino radicals by carboxylic acids, or sulfur or nitrogen analogues thereof
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D277/00—Heterocyclic compounds containing 1,3-thiazole or hydrogenated 1,3-thiazole rings
- C07D277/60—Heterocyclic compounds containing 1,3-thiazole or hydrogenated 1,3-thiazole rings condensed with carbocyclic rings or ring systems
- C07D277/62—Benzothiazoles
- C07D277/68—Benzothiazoles with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached in position 2
- C07D277/82—Nitrogen atoms
Definitions
- condensed ring of 5-6 carbon atoms which may be further substituted by an alkyl group of 1-5 carbon atoms.
- the present invention relates to a process for developing silver halide photographic light-sensitive materials and more particularly to a development process for reducing the gamma of a photographic image.
- a lightsensitive material for micro-filming is commercially available as a material having a high resolving power and good granularity. Although this material has excellent resolving power and granularity, the gamma of the processed image is too high for recording of tonal scenery.
- a developing solution containing 1- phenyl-3-pyrazolidone as the sole developing agent can be used in order to reduce the gamma of the image but it is accompanied by low sensitivity. In addition, it is very easily exhausted by processing small quantities of films.
- a developing solution containing N- methyl-p-aminophenol may have a high sensitivity but it is not effective for obtaining a soft tone image.
- a developing solution combining suitable amounts of lphenyl-3-pyrazolidone and N-methyl-p-aminophenol may exhibit high sensitivity and provide a considerably soft tone image but is easily exhausted.
- a developing solution containing a proper amount of l-phenyl- 3-pyrazolidone, N methyl p arninophenol and hydroquinone may have a high sensitivity and is not easily exhausted but it is imposible to obtain good soft tone images by using such a developing solution.
- the primary object of the present invention to provide a process for producing soft tone images without any loss of granularity and resolving power by using silver halide photographic recording materials of fine grain, high contrast and relatively low sensitive type.
- the object of this invention can be achieved by developing high contrast silver halide photographic light-sensitive material in the presence of a compound represented by the following formula:
- R represents an unsubstituted or substituted alkyl group of 1-5 carbon atoms, aralkyl group of l-5 carbon atoms or aryl group and R and R each represents a hydrogen atom or an alkyl group of l-5 carbon atoms, said R and R also capable of forming an unsaturated condensed ring of 5-6 carbon atoms, which may be further substituted by an alkyl group of 1-5 carbon atoms.
- the compounds of this invention can be applied to generally high contrast silver halide photographic recording materials of fine grain and relatively low sensitivity.
- the developing solution containing the above compound of the present invention contains at leastone developing agent, such as hydroquinone, 1-phenyl-3-pyrazolidone, N methyl-p-amino-phenol, etc. Furthermore, it contain one or more antioxidants, such as sodium sulfite, ascorbic acid, etc.; a salt such as sodium sulfate, a pH ad.- justing agent and a bulfering agent, such as boric acid, borax, sodium hydroxide, sodium carbonate and sodium phosphate, and the like.
- at leastone developing agent such as hydroquinone, 1-phenyl-3-pyrazolidone, N methyl-p-amino-phenol, etc.
- antioxidants such as sodium sulfite, ascorbic acid, etc.
- a salt such as sodium sulfate, a pH ad.- justing agent
- a bulfering agent such as boric acid, borax, sodium hydroxide, sodium carbonate and sodium phosphate, and
- other organic anti-foggants may be used together with the compounds of the present invention.
- an aldehyde such as formalin or glutaraldehyde or an organic solvent such as triethylene glycol and hexylene glycol may be added.
- a developing accelerator such as an amine or a polyethylene glycol may also be used together with the compounds of this invention.
- the amount of the compound. added is usually 1 mg. to 10 g. per liter of developing solution, although the amount depends on the composition of the developing solution, the developing temperature, and the nature of the light-sensitive material. A preferred range is 30-100 mg./liter of solution.
- the concentration of the compound of the present invention may range from 1 mg.-10 g. and preferably 50-200 mg./kg. of emulsion.
- the compound of this invention shows the effective reduction of contrast, not only when the compound is added to a developing solution but also when it is incorporated in a photographic light-sensitive material. Therefore, the use of the compound is not limited to a developing composition.
- EXAMPLE 1 A micro-film prepared by coating a film support with a fine grain silver chlorobromide gelatin emulsion was exposed by means of a sensitometer and developed by one of the following three kinds of developing solutions, labelled A, B and C.
- Developing Solution A G. N-methyl-p-aminophenol sulfate 1.0 Sodium sulfite 75 Hydroquinone 9.0 Sodium carbonate mono-hydrate 30 Potassium bromide 5.0 Water added to make 1 liter.
- Developing Solution B G. N-methyl-p-aminophenol sulfate 0.5 Sodium sulfite 10 Nabox 1 2.0 Water added to make 1 liter.
- Developing Solution C G. 1-phenyl-3-pyrazolidone 4.0 N-methyl-p-amonophenol sulfate 1.0 Sodium sulfite 100 Sodium carbonate mono-hydrate 30 Potassium bromide 5.0 Compound Water added to make 1 liter.
- the developing solution A is a known high contrast developing solution.
- the developing solution B is a known low contrast developing solution.
- the developing solution C is a low contrast developing solution of the present invention.
- FIGS. 1-3 of the accompanying drawings The characteristic curves of the images obtained by developing the microfilms with the above three kinds of developing solutions are shown in FIGS. 1-3 of the accompanying drawings, in which:
- FIG. 1 shows the characteristic curves of the image obtained by processing the microfilm with the high contrast developing solution A
- FIG. 2 shows the characteristic curves of the image obtained by developing the microfilm with the known low contrast developing solution B
- FIG. 3 shows the characteristic curves of the image obtained by the developing solution of the present invention.
- EXAMPLE 2 A microfilm prepared by coating a support with a fine grain silver chlorobromide gelatin emulsion was exposed by a sensitometer and then developed at 27 C., by the developing solution C in Example 1.
- a developing solution D having the same composition as the developing solution C of this invention (without the presence of the compound of this invention) and also the developing solutions E, F, G and H having the same condition as developing solution C were prepared.
- the following Compounds 8, 9, l0 and 11 outside the scope of this invention were used, respectively, instead of the compounds of this invention. Similar developing procedures were conducted.
- Photographic property Developing solution Compound (amount) Fog Gamma C Compound 5 (50 mg.l1.) 0. 10 0. 64 D 0. l1 1. 08 0. l2 0. 96 0. 12 1.05 0. 11 0. 97 0. 12 1. 04 0. 10 0. 70
- EXAMPLE 3 A microfilm prepared by coating a support with a fine grain silver chlorobromide gelatin emulsion was exposed by means of a sensitometer and developed at 27 C., with developing solutions I and K having the same composition as developing solution C except that the Compounds 6 and 7 were used instead of the Compound 5.
- EXAMPLE 4 A microfilm prepared by coating a support with a fine grain silver chlorobromide gelatin emulsion was exposed by means of a sensitometer and developed by developing solution L of this invention at 27 C.
- a 1 phenyl-S-pyrazolidone/N-methyl-p-aminophenol/ hydroquinone type developing solution has a higher processing function than a 1-phenyl-3-pyrazo1idone/N-methylp-aminophenol type developing solution but shows undesirably high gamma characteristics.
- the Compound 5 of this invention by adding the Compound 5 of this invention to the'former type developing solution, soft tone developments can be attained. Furthermore, the developing power becomes higher, as shown in the above table.
- a process for developing a silver halide photographic light-sensitive material which comprises developing the light-sensitive material in the presence of a compound represented by the following general formula:
- R represents an unsubstituted or substituted alkyl group of 1-5 carbon atoms, aralkyl group of l-S carbon atoms, or aryl group
- R and R each represents a hydrogen atom or an alkyl group of 1-5 carbon atoms, said R and R also capable of forming an unsaturated condensed ring of 5-6 carbon atoms, which may be further substituted by an alkyl group of 1-5 carbon atoms.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (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)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP44095485A JPS491573B1 (enrdf_load_stackoverflow) | 1969-11-29 | 1969-11-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US3674491A true US3674491A (en) | 1972-07-04 |
Family
ID=14138896
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US93672A Expired - Lifetime US3674491A (en) | 1969-11-29 | 1970-11-30 | Developing process |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US3674491A (enrdf_load_stackoverflow) |
| JP (1) | JPS491573B1 (enrdf_load_stackoverflow) |
| DE (1) | DE2058895A1 (enrdf_load_stackoverflow) |
| FR (1) | FR2072520A1 (enrdf_load_stackoverflow) |
| GB (1) | GB1298249A (enrdf_load_stackoverflow) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4029510A (en) * | 1972-07-19 | 1977-06-14 | General Film Development Corporation | Multi-solution photographic processing method using multi-component developer compositions |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5811937A (ja) * | 1981-07-15 | 1983-01-22 | Fuji Photo Film Co Ltd | 銀染料漂白処理方法 |
-
1969
- 1969-11-29 JP JP44095485A patent/JPS491573B1/ja active Pending
-
1970
- 1970-11-27 FR FR7042722A patent/FR2072520A1/fr not_active Withdrawn
- 1970-11-27 GB GB56441/70A patent/GB1298249A/en not_active Expired
- 1970-11-30 US US93672A patent/US3674491A/en not_active Expired - Lifetime
- 1970-11-30 DE DE19702058895 patent/DE2058895A1/de active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4029510A (en) * | 1972-07-19 | 1977-06-14 | General Film Development Corporation | Multi-solution photographic processing method using multi-component developer compositions |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS491573B1 (enrdf_load_stackoverflow) | 1974-01-14 |
| DE2058895A1 (de) | 1971-06-16 |
| GB1298249A (en) | 1972-11-29 |
| FR2072520A1 (enrdf_load_stackoverflow) | 1971-09-24 |
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