US3178284A - Photographic developer compositions - Google Patents
Photographic developer compositions Download PDFInfo
- Publication number
- US3178284A US3178284A US100013A US10001361A US3178284A US 3178284 A US3178284 A US 3178284A US 100013 A US100013 A US 100013A US 10001361 A US10001361 A US 10001361A US 3178284 A US3178284 A US 3178284A
- Authority
- US
- United States
- Prior art keywords
- per litre
- grams per
- developer
- composition
- alkali metal
- 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
- 239000000203 mixture Substances 0.000 title description 22
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 15
- QIGBRXMKCJKVMJ-UHFFFAOYSA-N Hydroquinone Chemical compound OC1=CC=C(O)C=C1 QIGBRXMKCJKVMJ-UHFFFAOYSA-N 0.000 claims description 12
- 239000012141 concentrate Substances 0.000 claims description 11
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 claims description 11
- 229910052783 alkali metal Inorganic materials 0.000 claims description 6
- 150000001340 alkali metals Chemical class 0.000 claims description 6
- 239000004310 lactic acid Substances 0.000 claims description 6
- 235000014655 lactic acid Nutrition 0.000 claims description 6
- AJPXTSMULZANCB-UHFFFAOYSA-N chlorohydroquinone Chemical compound OC1=CC=C(O)C(Cl)=C1 AJPXTSMULZANCB-UHFFFAOYSA-N 0.000 claims description 5
- LSNNMFCWUKXFEE-UHFFFAOYSA-L sulfite Chemical compound [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 0.000 claims description 4
- 239000007864 aqueous solution Substances 0.000 claims description 3
- CMCWWLVWPDLCRM-UHFFFAOYSA-N phenidone Chemical compound N1C(=O)CCN1C1=CC=CC=C1 CMCWWLVWPDLCRM-UHFFFAOYSA-N 0.000 claims description 3
- 239000000243 solution Substances 0.000 description 9
- 239000003795 chemical substances by application Substances 0.000 description 8
- 238000003860 storage Methods 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 229910052709 silver Inorganic materials 0.000 description 5
- 239000004332 silver Substances 0.000 description 5
- -1 silver halide Chemical class 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000004615 ingredient Substances 0.000 description 4
- 235000011118 potassium hydroxide Nutrition 0.000 description 4
- 239000004285 Potassium sulphite Substances 0.000 description 3
- 239000012895 dilution Substances 0.000 description 3
- 238000010790 dilution Methods 0.000 description 3
- BHZRJJOHZFYXTO-UHFFFAOYSA-L potassium sulfite Chemical compound [K+].[K+].[O-]S([O-])=O BHZRJJOHZFYXTO-UHFFFAOYSA-L 0.000 description 3
- 235000019252 potassium sulphite Nutrition 0.000 description 3
- URDCARMUOSMFFI-UHFFFAOYSA-N 2-[2-[bis(carboxymethyl)amino]ethyl-(2-hydroxyethyl)amino]acetic acid Chemical compound OCCN(CC(O)=O)CCN(CC(O)=O)CC(O)=O URDCARMUOSMFFI-UHFFFAOYSA-N 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- QRUDEWIWKLJBPS-UHFFFAOYSA-N benzotriazole Chemical compound C1=CC=C2N[N][N]C2=C1 QRUDEWIWKLJBPS-UHFFFAOYSA-N 0.000 description 2
- 239000012964 benzotriazole Substances 0.000 description 2
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 2
- 239000004327 boric acid Substances 0.000 description 2
- 239000000839 emulsion Substances 0.000 description 2
- 239000003755 preservative agent Substances 0.000 description 2
- 230000002335 preservative effect Effects 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- HRXKRNGNAMMEHJ-UHFFFAOYSA-K trisodium citrate Chemical compound [Na+].[Na+].[Na+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O HRXKRNGNAMMEHJ-UHFFFAOYSA-K 0.000 description 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- ZMZDMBWJUHKJPS-UHFFFAOYSA-M Thiocyanate anion Chemical compound [S-]C#N ZMZDMBWJUHKJPS-UHFFFAOYSA-M 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 229910001413 alkali metal ion Inorganic materials 0.000 description 1
- 239000012670 alkaline solution Substances 0.000 description 1
- 229940075397 calomel Drugs 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- ZOMNIUBKTOKEHS-UHFFFAOYSA-L dimercury dichloride Chemical compound Cl[Hg][Hg]Cl ZOMNIUBKTOKEHS-UHFFFAOYSA-L 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- ZMZDMBWJUHKJPS-UHFFFAOYSA-N hydrogen thiocyanate Natural products SC#N ZMZDMBWJUHKJPS-UHFFFAOYSA-N 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 150000003112 potassium compounds Chemical class 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- DHCDFWKWKRSZHF-UHFFFAOYSA-L thiosulfate(2-) Chemical compound [O-]S([S-])(=O)=O DHCDFWKWKRSZHF-UHFFFAOYSA-L 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
- G03C5/264—Supplying of photographic processing chemicals; Preparation or packaging thereof
- G03C5/266—Supplying of photographic processing chemicals; Preparation or packaging thereof of solutions or concentrates
Definitions
- a developer composition in the form of a solution comprising at least one alkali metal normal sulphite as a preservative, at least one alkali and, as develop- 7 ing agents, l-phenyl-3-pyrazolidone and both hydroquinone and chlorohydroquinone, said composition being capable of being prepared for use by mere dilution with water to yield a solution having a pH of 11.0 to 11.8.
- developer concentrates are referred to hereinafter as developer concentrates.
- compositions of the invention are preferably in the form of the developer concentrate because this form is more economical to transport and store, they may, if desired, be sold as solutions which are sufliciently dilute to be ready for use and need not be diluted with water, and such solutions are included within the scope of the invention.
- the developer compositions ready for use preferably have a pH of 11.0 to 11.5; a particularly convenient pH is 11.3. These pH values and the others in thisspecification are measured on a pH meter using a standard calomel electrode as a reference electrode and a glass electrode.
- a fog restraining agent e.g. benzotriazole
- a bulfering agent e.g. lactic acid or boric acid
- a silver halide solvent i.e. a compound which converts the silver halide to a soluble complex ion
- a thiocyanate or thiosulphate e.g. a thiocyanate or thiosulphate.
- the alkali metal normal sulphite which may be added as such or formed in situ by reaction of a-bisulphite with 3,178,284 Patented Apr. 13, 1965 concentration of each of the ingredients must not exceed 7 the solubility thereof in the composition Within the temperature range of conditions of storage and use.
- the minimum concentration is, of course, dependent on the extent to which the composition is to be diluted before use, which in turn depends on the solubility of the ingredients and the purpose for which the developer is intended.
- the developer composition comprises, besides l-phenyl-3-pyrazolidone, chlorohydroquinone and hydroquinone as developing agents, caustic potash as the sole source of alkali, and potassium sulphite as preservative, the composition preferably including a bufiering agent, e.g. lactic or boric acid.
- the developer concentrate .contains as developing agents, l-phenyl-3-pyrazolidonein an amount at least equal to 1 gram per litre, cblorohydroquinone in an amount at least equal to 25 grams perv litre, hydroquinone in an amount at least equal to 25 grams per litre and potassium sulphite in amount at least equal to 200 grams per litre, the maximum concentration of all these ingredients not exceeding the solubility thereof in the concentrate within the temperature range of conditions of storage and use.
- the composition comprises lactic acid
- the amount of the additive in the formulation is preferably at least 10 grams per litre.
- Example I A developer concentrate is formulated as follows:
- Trisodium salt of N-hydroxyethylenediaminetriacetic acid (in the form or" a 34% W./W. aqueous.
- a developer concentrate comprising an aqueous solution of at least 1 gram per litre of 1-phenyl-3-pyrazolidone, at least 25 grams per litre of hydroquinone, at least 25 grams per litre of chlorohydroquinone, at least 200 grams per litre of an alkali metal sulphite of the formula M (where M represents an alkali metal atom), at least 10 grams per litre of lactic acid and 86 to 108.5 grams per litre of potassium hydroxide.
- a developer concentrate having the following composition for each 1000 cc.
- NORMAN G. TORCHIN Primary Examiner.
- PHILIP E. MANGAN Examiner.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Silver Salt Photography Or Processing Solution Therefor (AREA)
- Nitrogen Condensed Heterocyclic Rings (AREA)
- Photosensitive Polymer And Photoresist Processing (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB13532/60A GB931007A (en) | 1960-04-14 | 1960-04-14 | Improvements in or relating to photographic developer compositions |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US3178284A true US3178284A (en) | 1965-04-13 |
Family
ID=10024693
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US100013A Expired - Lifetime US3178284A (en) | 1960-04-14 | 1961-04-03 | Photographic developer compositions |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US3178284A (en)) |
| BE (1) | BE602625A (en)) |
| GB (1) | GB931007A (en)) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3532498A (en) * | 1965-10-07 | 1970-10-06 | May & Baker Ltd | Photographic developer compositions |
| US3647461A (en) * | 1969-02-19 | 1972-03-07 | Eastman Kodak Co | Methods and materials for replenishment of developers for color photographic films |
| US3647462A (en) * | 1969-02-19 | 1972-03-07 | Eastman Kodak Co | Methods and materials for replenishment of developers for color photographic films (b) |
| US5210010A (en) * | 1991-05-15 | 1993-05-11 | Ilford Limited | Silver halide developing solutions |
| EP0736807A1 (en) * | 1995-03-21 | 1996-10-09 | Agfa-Gevaert N.V. | A kit for preparing a processing liquid to be used for making a lithographic printing plate according to the silver salt diffusion transfer process |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1229224B (it) * | 1989-04-03 | 1991-07-26 | Minnesota Mining & Mfg | Composizione concentrata di sviluppo fotografico e metodo per prepararla. |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2136963A (en) * | 1933-11-16 | 1938-11-15 | Bohme Fettchemie Gmbh | Fire extinguishing method and medium |
| GB542502A (en) * | 1940-07-10 | 1942-01-13 | John David Kendall | Improvements in or relating to photographic development processes |
| US2901350A (en) * | 1954-10-12 | 1959-08-25 | Goldhammer Jerome Stewart | Combined developers and fixers |
| US3022168A (en) * | 1958-06-28 | 1962-02-20 | Pharmacia Ab | Photographic developer |
| US3088824A (en) * | 1959-02-17 | 1963-05-07 | Cons Electrodynamics Corp | Rapid photographic developing |
-
0
- BE BE602625D patent/BE602625A/xx unknown
-
1960
- 1960-04-14 GB GB13532/60A patent/GB931007A/en not_active Expired
-
1961
- 1961-04-03 US US100013A patent/US3178284A/en not_active Expired - Lifetime
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2136963A (en) * | 1933-11-16 | 1938-11-15 | Bohme Fettchemie Gmbh | Fire extinguishing method and medium |
| GB542502A (en) * | 1940-07-10 | 1942-01-13 | John David Kendall | Improvements in or relating to photographic development processes |
| US2901350A (en) * | 1954-10-12 | 1959-08-25 | Goldhammer Jerome Stewart | Combined developers and fixers |
| US3022168A (en) * | 1958-06-28 | 1962-02-20 | Pharmacia Ab | Photographic developer |
| US3088824A (en) * | 1959-02-17 | 1963-05-07 | Cons Electrodynamics Corp | Rapid photographic developing |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3532498A (en) * | 1965-10-07 | 1970-10-06 | May & Baker Ltd | Photographic developer compositions |
| US3647461A (en) * | 1969-02-19 | 1972-03-07 | Eastman Kodak Co | Methods and materials for replenishment of developers for color photographic films |
| US3647462A (en) * | 1969-02-19 | 1972-03-07 | Eastman Kodak Co | Methods and materials for replenishment of developers for color photographic films (b) |
| US5210010A (en) * | 1991-05-15 | 1993-05-11 | Ilford Limited | Silver halide developing solutions |
| EP0736807A1 (en) * | 1995-03-21 | 1996-10-09 | Agfa-Gevaert N.V. | A kit for preparing a processing liquid to be used for making a lithographic printing plate according to the silver salt diffusion transfer process |
Also Published As
| Publication number | Publication date |
|---|---|
| GB931007A (en) | 1963-07-10 |
| BE602625A (en)) |
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