EP0601415A1 - Photographische Entwicklerlösung - Google Patents
Photographische Entwicklerlösung Download PDFInfo
- Publication number
- EP0601415A1 EP0601415A1 EP93119091A EP93119091A EP0601415A1 EP 0601415 A1 EP0601415 A1 EP 0601415A1 EP 93119091 A EP93119091 A EP 93119091A EP 93119091 A EP93119091 A EP 93119091A EP 0601415 A1 EP0601415 A1 EP 0601415A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- compound
- developing solution
- naphthol
- formula
- compounds
- 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.)
- Withdrawn
Links
- 150000001875 compounds Chemical class 0.000 claims abstract description 39
- -1 silver halide Chemical class 0.000 claims abstract description 21
- 239000000872 buffer Substances 0.000 claims abstract description 16
- 229910052709 silver Inorganic materials 0.000 claims abstract description 13
- 239000004332 silver Substances 0.000 claims abstract description 13
- 125000001424 substituent group Chemical group 0.000 claims abstract description 11
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims abstract description 6
- TZBROGJRQUABOK-UHFFFAOYSA-N 4-hydroxynaphthalene-2,7-disulfonic acid Chemical compound OS(=O)(=O)C1=CC=C2C(O)=CC(S(O)(=O)=O)=CC2=C1 TZBROGJRQUABOK-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229910052783 alkali metal Inorganic materials 0.000 claims abstract description 5
- 239000003513 alkali Substances 0.000 claims abstract description 4
- LSNNMFCWUKXFEE-UHFFFAOYSA-L sulfite Chemical compound [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 0.000 claims abstract description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 3
- 150000001340 alkali metals Chemical class 0.000 claims abstract description 3
- 239000001257 hydrogen Substances 0.000 claims abstract description 3
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 3
- FJKROLUGYXJWQN-UHFFFAOYSA-N 4-hydroxybenzoic acid Chemical compound OC(=O)C1=CC=C(O)C=C1 FJKROLUGYXJWQN-UHFFFAOYSA-N 0.000 claims description 12
- QIGBRXMKCJKVMJ-UHFFFAOYSA-N Hydroquinone Chemical compound OC1=CC=C(O)C=C1 QIGBRXMKCJKVMJ-UHFFFAOYSA-N 0.000 claims description 10
- 239000003795 chemical substances by application Substances 0.000 claims description 7
- 229940090248 4-hydroxybenzoic acid Drugs 0.000 claims description 6
- 150000005208 1,4-dihydroxybenzenes Chemical class 0.000 claims description 2
- 125000000217 alkyl group Chemical group 0.000 claims description 2
- 125000003289 ascorbyl group Chemical class [H]O[C@@]([H])(C([H])([H])O*)[C@@]1([H])OC(=O)C(O*)=C1O* 0.000 claims description 2
- 125000004432 carbon atom Chemical group C* 0.000 claims description 2
- 229910006069 SO3H Inorganic materials 0.000 abstract description 5
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 abstract description 3
- 150000002989 phenols Chemical class 0.000 abstract description 3
- KJCVRFUGPWSIIH-UHFFFAOYSA-N 1-naphthol Chemical group C1=CC=C2C(O)=CC=CC2=C1 KJCVRFUGPWSIIH-UHFFFAOYSA-N 0.000 abstract description 2
- 125000000896 monocarboxylic acid group Chemical group 0.000 abstract description 2
- 150000004780 naphthols Chemical class 0.000 abstract description 2
- 239000000243 solution Substances 0.000 description 34
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 229910021538 borax Inorganic materials 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 239000004328 sodium tetraborate Substances 0.000 description 5
- 235000010339 sodium tetraborate Nutrition 0.000 description 5
- YGSDEFSMJLZEOE-UHFFFAOYSA-N salicylic acid Chemical compound OC(=O)C1=CC=CC=C1O YGSDEFSMJLZEOE-UHFFFAOYSA-N 0.000 description 4
- 150000003839 salts Chemical class 0.000 description 4
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 description 4
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 3
- 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
- 229910052796 boron Inorganic materials 0.000 description 3
- 239000007853 buffer solution Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- DNUYOWCKBJFOGS-UHFFFAOYSA-N 2-[[10-(2,2-dicarboxyethyl)anthracen-9-yl]methyl]propanedioic acid Chemical compound C1=CC=C2C(CC(C(=O)O)C(O)=O)=C(C=CC=C3)C3=C(CC(C(O)=O)C(O)=O)C2=C1 DNUYOWCKBJFOGS-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 150000002429 hydrazines Chemical class 0.000 description 2
- IJFXRHURBJZNAO-UHFFFAOYSA-N meta--hydroxybenzoic acid Natural products OC(=O)C1=CC=CC(O)=C1 IJFXRHURBJZNAO-UHFFFAOYSA-N 0.000 description 2
- 235000015097 nutrients Nutrition 0.000 description 2
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- JHJLBTNAGRQEKS-UHFFFAOYSA-M sodium bromide Chemical compound [Na+].[Br-] JHJLBTNAGRQEKS-UHFFFAOYSA-M 0.000 description 2
- 235000010265 sodium sulphite Nutrition 0.000 description 2
- 235000019832 sodium triphosphate Nutrition 0.000 description 2
- AYEKOFBPNLCAJY-UHFFFAOYSA-O thiamine pyrophosphate Chemical compound CC1=C(CCOP(O)(=O)OP(O)(O)=O)SC=[N+]1CC1=CN=C(C)N=C1N AYEKOFBPNLCAJY-UHFFFAOYSA-O 0.000 description 2
- PQMFVUNERGGBPG-UHFFFAOYSA-N (6-bromopyridin-2-yl)hydrazine Chemical compound NNC1=CC=CC(Br)=N1 PQMFVUNERGGBPG-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
- 241000894006 Bacteria Species 0.000 description 1
- 241000195493 Cryptophyta Species 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 230000005791 algae growth Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000001580 bacterial effect Effects 0.000 description 1
- 239000004327 boric acid Substances 0.000 description 1
- 150000001639 boron compounds Chemical class 0.000 description 1
- 239000008366 buffered solution Substances 0.000 description 1
- 239000006172 buffering agent Substances 0.000 description 1
- 230000002939 deleterious effect Effects 0.000 description 1
- 238000010494 dissociation reaction Methods 0.000 description 1
- 230000005593 dissociations Effects 0.000 description 1
- 150000004820 halides Chemical class 0.000 description 1
- 230000036039 immunity Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 229910000027 potassium carbonate Inorganic materials 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000003352 sequestering agent Substances 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L sodium carbonate Substances [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 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
- 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
-
- 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
- G03C5/30—Developers
-
- 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
- G03C7/00—Multicolour photographic processes or agents therefor; Regeneration of such processing agents; Photosensitive materials for multicolour processes
- G03C7/30—Colour processes using colour-coupling substances; Materials therefor; Preparing or processing such materials
- G03C7/407—Development processes or agents therefor
- G03C7/413—Developers
Definitions
- This invention relates to compositions for processing exposed photographic material and in particular to compositions for developing silver halide photographic material.
- the pH range for black and white film developers lies in the range 8-10. At the high end of this range, sodium or potassium carbonate are usually used as buffer. Between pH 8 and 9, alkanolamine salts or borax/boric acid are used. However, the latter mixture is becoming more undesirable due to effluent controls by water authorities. Restrictions apply to boron compounds and hence will affect photoprocessors using developers which are formulated with boron containing buffers. Boron and its compounds are toxic in the environment. Thus used processing solutions containing boron may often not be discharged in the normal effluent channels. On the other hand alkanolamine salts contain nitrogen which tends to act as a nutrient for bacterial and algal growth which proliferate greatly using up available oxygen. Thus the use of alkanolamine salts as buffers is also to be deprecated. There is thus a need for a buffer system which does not have the above deleterious effects.
- a photographic developing solution which comprises at least one silver halide developing compound, an alkali metal sulphite, sufficient alkali to bring the pH within the range of 8 to 10 and as a buffer a compound of the general formula I: B - R n I wherein B is a phenol ring or an annelated phenol ring and R is a substituent group other than hydrogen and n is from 1 to 4 such that the compound has a pKa between 8 and 10 and is photographically inert.
- Useful compounds of formula I are phenols containing - SO3H or COOH substituent groups. Particularly useful are the p-substituted compounds.
- Another class of compounds of formula I which are particularly useful are naphthol compounds having one or two substituent groups R. Particularly preferred substituent groups R in the naphthol ring system are also -SO3H and -COOH.
- An especially useful naphthol compound is 1-naphthol-3,6-disulphonic acid which has a pKa of 8.2.
- Another useful naphthol compound is 1-naphthol-3-sulphonic acid which has a pKa of 8.6.
- Hydroquinone falls within formula I as set forth and it has a pKa of 9.91 but it can not be used as the only buffer in the developing solution of the present invention as it is photographically active as a developing agent.
- the amount of the compound of formula I present in the developing solution of the present invention is from 1 to 40g/litre.
- the compound of formula I must be sufficiently water-soluble to act as a buffer in the developing solution.
- substituents R are -COOH, halides for example -Cl and -SO3H.
- substituents R are -COOH, halides for example -Cl and -SO3H.
- substituents not all these substituents produce the required pKa in all the p-, m- or o- positions.
- p-hydroxybenzoic acid has a pKa of 9.32
- m-hydroxybenzoic acid has a pKa of 9.92 whilst o-hydroxybenzoic acid has a pKa of 13.40.
- o-hydroxybenzoic acid could not be used as a buffer in the developing solution of the present invention.
- M-hydroxybenzoic acid could be used but as it is close to the upper limit of the required pKa range its use is not preferred.
- p-hydroxybenzoic acid has a pKa towards the middle of the required pKa range, is readily soluble in water and has no disadvantageous characteristics such as a strong colour or smell.
- p-hydroxybenzoic acid is one of the preferred compounds for use as buffer in the developing solution of the present invention.
- Another useful compound is p-phenolsulphonic acid which has a pKa of about 9.05. It is to be understood that salts, such as sodium salts, of these acids are equally useful in the present invention.
- any one of the three chloro-substituted phenols could be used as they all have a pKa within the required range but they are not particularly water-soluble and all of them have a strong odour. Thus none of these compounds is preferred as buffering agents in the developing solution of the present invention.
- the sulphite present in the developing solution is sodium sulphite.
- Sodium hydroxide is a suitable alkali to bring the developing solution to the desired starting pH of the freshly prepared developing solution.
- sequestering agents such as sodium tripolyphosphate and restraining agents such as sodium bromide.
- Other components commonly found in photographic processing solutions may also be present.
- Solution 1 comprised borax
- solution 2 comprised p-hydroxybenzoic acid
- 3 comprised p-phenolsulphonic acid
- 4 comprised 1-naphthol-3,6-disulphonic acid
- solution 5 contained no buffer.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB929225483A GB9225483D0 (en) | 1992-12-05 | 1992-12-05 | Photographic developing solution |
| GB9225483 | 1992-12-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP0601415A1 true EP0601415A1 (de) | 1994-06-15 |
Family
ID=10726196
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP93119091A Withdrawn EP0601415A1 (de) | 1992-12-05 | 1993-11-26 | Photographische Entwicklerlösung |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP0601415A1 (de) |
| GB (1) | GB9225483D0 (de) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2292813A (en) * | 1994-08-27 | 1996-03-06 | Ilford Ltd | Photographic developer |
| US5702875A (en) * | 1996-06-28 | 1997-12-30 | Eastman Kodak Company | Weakly alkaline ascorbic acid developing composition, processing kit and method using same |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB959563A (en) * | 1959-03-16 | 1964-06-03 | Kodak Ltd | Improvements in photography |
| US3790383A (en) * | 1970-12-21 | 1974-02-05 | Fuji Photo Film Co Ltd | Infectious developer composition |
| GB1367009A (en) * | 1971-06-04 | 1974-09-18 | Fuji Photo Film Co Ltd | Method of developing photosensitive materials |
| GB2139370A (en) * | 1983-03-31 | 1984-11-07 | Fuji Photo Film Co Ltd | Processing of colour photographic silver halide light-sensitive material |
| JPS6358444A (ja) * | 1986-08-29 | 1988-03-14 | Fuji Photo Film Co Ltd | ハロゲン化銀カラ−写真感光材料の処理方法 |
| US4830948A (en) * | 1987-03-18 | 1989-05-16 | Fuji Photo Film Co., Ltd. | Method of forming color images |
-
1992
- 1992-12-05 GB GB929225483A patent/GB9225483D0/en active Pending
-
1993
- 1993-11-26 EP EP93119091A patent/EP0601415A1/de not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB959563A (en) * | 1959-03-16 | 1964-06-03 | Kodak Ltd | Improvements in photography |
| US3790383A (en) * | 1970-12-21 | 1974-02-05 | Fuji Photo Film Co Ltd | Infectious developer composition |
| GB1367009A (en) * | 1971-06-04 | 1974-09-18 | Fuji Photo Film Co Ltd | Method of developing photosensitive materials |
| GB2139370A (en) * | 1983-03-31 | 1984-11-07 | Fuji Photo Film Co Ltd | Processing of colour photographic silver halide light-sensitive material |
| JPS6358444A (ja) * | 1986-08-29 | 1988-03-14 | Fuji Photo Film Co Ltd | ハロゲン化銀カラ−写真感光材料の処理方法 |
| US4830948A (en) * | 1987-03-18 | 1989-05-16 | Fuji Photo Film Co., Ltd. | Method of forming color images |
Non-Patent Citations (1)
| Title |
|---|
| PATENT ABSTRACTS OF JAPAN vol. 12, no. 278 (P - 738)<3125> 1 August 1988 (1988-08-01) * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2292813A (en) * | 1994-08-27 | 1996-03-06 | Ilford Ltd | Photographic developer |
| GB2292813B (en) * | 1994-08-27 | 1999-02-03 | Ilford Ltd | Photographic silver halide developing solution |
| US5702875A (en) * | 1996-06-28 | 1997-12-30 | Eastman Kodak Company | Weakly alkaline ascorbic acid developing composition, processing kit and method using same |
| GB2314638A (en) * | 1996-06-28 | 1998-01-07 | Eastman Kodak Co | Photographic developer |
| US5756271A (en) * | 1996-06-28 | 1998-05-26 | Eastman Kodak Company | Weakly alkaline ascorbic acid developing composition, processing kit and method using same |
| GB2314638B (en) * | 1996-06-28 | 2000-07-19 | Eastman Kodak Co | Weakly alkaline ascorbic acid developing composition,processing kit and method using same |
Also Published As
| Publication number | Publication date |
|---|---|
| GB9225483D0 (en) | 1993-01-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): BE CH DE FR GB IT LI |
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| 17P | Request for examination filed |
Effective date: 19940713 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
| 18D | Application deemed to be withdrawn |
Effective date: 19960601 |