EP0548124A1 - Stabilisatoren für amplifikationsentwickler. - Google Patents
Stabilisatoren für amplifikationsentwickler.Info
- Publication number
- EP0548124A1 EP0548124A1 EP91915628A EP91915628A EP0548124A1 EP 0548124 A1 EP0548124 A1 EP 0548124A1 EP 91915628 A EP91915628 A EP 91915628A EP 91915628 A EP91915628 A EP 91915628A EP 0548124 A1 EP0548124 A1 EP 0548124A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- stabiliser
- developer
- agent
- oxidising agent
- redox amplification
- 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.)
- Granted
Links
- 239000003381 stabilizer Substances 0.000 title claims abstract description 27
- LEHOTFFKMJEONL-UHFFFAOYSA-N Uric Acid Chemical compound N1C(=O)NC(=O)C2=C1NC(=O)N2 LEHOTFFKMJEONL-UHFFFAOYSA-N 0.000 claims abstract description 29
- 229940116269 uric acid Drugs 0.000 claims abstract description 26
- 239000007800 oxidant agent Substances 0.000 claims abstract description 20
- 239000000203 mixture Substances 0.000 claims abstract description 17
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims abstract description 14
- 230000003321 amplification Effects 0.000 claims abstract description 13
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 13
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims abstract description 8
- 150000003839 salts Chemical class 0.000 claims abstract description 8
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 7
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims abstract description 4
- TVWHNULVHGKJHS-UHFFFAOYSA-N Uric acid Natural products N1C(=O)NC(=O)C2NC(=O)NC21 TVWHNULVHGKJHS-UHFFFAOYSA-N 0.000 claims description 25
- 238000000034 method Methods 0.000 claims description 8
- 235000011007 phosphoric acid Nutrition 0.000 claims description 6
- 230000003993 interaction Effects 0.000 claims description 5
- -1 alkali metal salt Chemical class 0.000 claims description 3
- 150000003016 phosphoric acids Chemical class 0.000 claims description 3
- 230000003019 stabilising effect Effects 0.000 claims description 3
- 229910052783 alkali metal Inorganic materials 0.000 claims 1
- 238000011161 development Methods 0.000 abstract description 7
- 230000001590 oxidative effect Effects 0.000 abstract description 5
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 239000000470 constituent Substances 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 8
- 239000002253 acid Substances 0.000 description 4
- 238000010348 incorporation Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- 150000007513 acids Chemical class 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 230000002401 inhibitory effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- RVKVVAMNDPOASZ-UHFFFAOYSA-N O.S(=O)(=O)(O)O.CS(=O)(=O)NCCNNC=1C(=CC=CC1)C.S(=O)(=O)(O)O.S(=O)(=O)(O)O.CS(=O)(=O)NCCNNC=1C(=CC=CC1)C.O Chemical compound O.S(=O)(=O)(O)O.CS(=O)(=O)NCCNNC=1C(=CC=CC1)C.S(=O)(=O)(O)O.S(=O)(=O)(O)O.CS(=O)(=O)NCCNNC=1C(=CC=CC1)C.O RVKVVAMNDPOASZ-UHFFFAOYSA-N 0.000 description 1
- 229910021607 Silver chloride Inorganic materials 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000013068 control sample Substances 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 229960001484 edetic acid Drugs 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 150000002978 peroxides Chemical class 0.000 description 1
- 229910000027 potassium carbonate Inorganic materials 0.000 description 1
- HKZLPVFGJNLROG-UHFFFAOYSA-M silver monochloride Chemical compound [Cl-].[Ag+] HKZLPVFGJNLROG-UHFFFAOYSA-M 0.000 description 1
- 238000012360 testing method Methods 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
- 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
- G03C7/3017—Colour processes using colour-coupling substances; Materials therefor; Preparing or processing such materials with intensification of the image by oxido-reduction
- G03C7/302—Colour processes using colour-coupling substances; Materials therefor; Preparing or processing such materials with intensification of the image by oxido-reduction using peroxides
Definitions
- This invention relates to stabilisers for RX developers.
- Particularly the invention relates to the processing of photographic materials by redox amplification developer systems in order to ameliorate the inherent instability of such solutions.
- these acids and their functional salts will stabilise oxidants such as peroxide even in the presence of the normal components of a redox amplification developer system, and that the presence of such acids and/or their functional salts has not only the effect of inhibiting the interaction between the colour developer and the stabiliser, thereby to increase the useful life of the developer solutions, but also beneficially effects the development process to enhance the developed quality of the image by markedly reducing the so of such systems to produce fogged products.
- uric acid, phosphoric acid or its functional salts may be included in a coating on a photographic paper thereby to give improved fogging levels by inhibiting oxidant/colour developer interaction in situ.
- a colour developer composition comprising an oxidising agent and a colour developing component, wherein the composition additionally comprises a stabiliser such as uric acid for the oxidising agent.
- a stabiliser such as uric acid for the oxidising agent.
- such composition includes at least one nitro-substituted nitrogen containing hetrocyclic anti-fogging compound.
- a redox amplification colour developer composition comprising an oxidizing agent and a colour developing component, characterised in that said composition comprises a combined stabiliser and anti-fogging agent selected from uric or phosphoric acids. It is thus possible to dispense with separate anti-fogging agent per se.
- the composition has a ratio of oxidizing agent to combine stabiliser in the range of 1 ml to 2 to 50 mg of the combined stabiliser, and preferably 1 ml of the agent to 5 - 20 mg of the acid.
- a photographic paper having coated thereupon a stabiliser as set forth above for a redox amplification colour developer, thereby to inhibit fogging due to interaction between the stabiliser and the developer.
- the figure annexed hereto shows the graph of the effect of uric acid in amplifying developers.
- a multilayer colour paper, suitable for an "RX” process was prepared.
- the paper was of a similar construction to current 2001 paper products with respect to the dispersions used, and the gel laydown.
- "All chloride" emulsions were used and the silver concentrations for each layer were as follows - red sensitive layer 3.0mg/sqft., green sensitive layer 4.0mg/sqft., blue sensitive layer 6.4mg/sqft, giving a total weight of silver 13.4mg/sqft.
- An initial developer was prepared using a potassium carbonate buffer, to which the required photographic reagents were added. Final developer composition is shown below.
- the pH was adjusted to 10.3, with dilute NaOH, or H-SO. as required.
- Blue D min is improved by the incorporation of uric acid in the amplifying developer, the improvement is best at the higher concentrations and is maintained over the test period.
- Contrasts for the layers show variation, but the magnitude of the uric acid containing samples are reduced compared to the control which is an advantage.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Silver Salt Photography Or Processing Solution Therefor (AREA)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB909020000A GB9020000D0 (en) | 1990-09-13 | 1990-09-13 | Stabilisers for rx developers |
| GB9020000 | 1990-09-13 | ||
| PCT/EP1991/001655 WO1992005471A1 (en) | 1990-09-13 | 1991-08-30 | Stabilisers for rx developers |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0548124A1 true EP0548124A1 (de) | 1993-06-30 |
| EP0548124B1 EP0548124B1 (de) | 1995-02-08 |
Family
ID=10682130
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP91915628A Expired - Lifetime EP0548124B1 (de) | 1990-09-13 | 1991-08-30 | Stabilisatoren für amplifikationsentwickler |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP0548124B1 (de) |
| JP (1) | JPH06500863A (de) |
| DE (1) | DE69107307T2 (de) |
| GB (1) | GB9020000D0 (de) |
| WO (1) | WO1992005471A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5707786A (en) * | 1995-07-17 | 1998-01-13 | Agfa-Gevaert | Processing of color photographic silver halide materials |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5213336A (en) * | 1975-07-23 | 1977-02-01 | Fuji Photo Film Co Ltd | Photographic image formation method |
| JPS613137A (ja) * | 1984-06-15 | 1986-01-09 | Fuji Photo Film Co Ltd | 内部潜像型コア／シエル直接ポジハロゲン化銀乳剤及びその製造法 |
-
1990
- 1990-09-13 GB GB909020000A patent/GB9020000D0/en active Pending
-
1991
- 1991-08-30 EP EP91915628A patent/EP0548124B1/de not_active Expired - Lifetime
- 1991-08-30 JP JP51391391A patent/JPH06500863A/ja active Pending
- 1991-08-30 DE DE69107307T patent/DE69107307T2/de not_active Expired - Fee Related
- 1991-08-30 WO PCT/EP1991/001655 patent/WO1992005471A1/en active IP Right Grant
Non-Patent Citations (1)
| Title |
|---|
| See references of WO9205471A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| DE69107307T2 (de) | 1995-06-01 |
| GB9020000D0 (en) | 1990-10-24 |
| WO1992005471A1 (en) | 1992-04-02 |
| JPH06500863A (ja) | 1994-01-27 |
| DE69107307D1 (de) | 1995-03-23 |
| EP0548124B1 (de) | 1995-02-08 |
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