US3467521A - Developer compositions containing sequestering agents - Google Patents
Developer compositions containing sequestering agents Download PDFInfo
- Publication number
- US3467521A US3467521A US543038A US3467521DA US3467521A US 3467521 A US3467521 A US 3467521A US 543038 A US543038 A US 543038A US 3467521D A US3467521D A US 3467521DA US 3467521 A US3467521 A US 3467521A
- Authority
- US
- United States
- Prior art keywords
- acid
- developer
- potassium
- developers
- compositions containing
- 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
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
- Silver halide developers the inorganic constituents of which are present in the form of their potassium salts, show less clouding during use when they contain aminoalkyl carboxylic acid derivatives, aminoalkyl phosphoric acid derivatives or aminoalkyl sulfonic acid derivatives in concentrations at least 5 times that used for sequestering calcium and magnesium.
- the known developer concentrates contain, for example, the following components per liter of concentrate:
- Potassium salts in the form of potassium hydroxide, potassium carbonate, potassium sulfite, potassium bromide, and others
- 300-600 Hydroquinone if desired in combination with other developers 20-80
- Compounds according to the invention for example, nitrile-triacetic acid, per g. of potassium salt 10-20
- other developers especially of the pyrazolidone-(3) series, may be used, in particular 1-phenyl-pyrazolidone-(3).
- Compounds which may be used for this purpose also include aminophenols, for example, methylaminophenol, 3-irnino-pyrazolidine or 4-aminopyrazolidone-(5) derivatives.
- ethylene diaminotetracetic acid is sufficient for complex formation of calcium or magnesium salts and no precipitates of this type appear.
- a photographic silver halide developer composition containing a silver halide developing agent and potassium compounds providing alkalinity and'stability and which is substantially free of sodium compounds
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)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1472752A DE1472752C3 (de) | 1965-05-03 | 1965-05-03 | Entwicklerkonzentrat |
Publications (1)
Publication Number | Publication Date |
---|---|
US3467521A true US3467521A (en) | 1969-09-16 |
Family
ID=6936683
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US543038A Expired - Lifetime US3467521A (en) | 1965-05-03 | 1966-04-18 | Developer compositions containing sequestering agents |
Country Status (5)
Country | Link |
---|---|
US (1) | US3467521A (de) |
BE (1) | BE680394A (de) |
DE (1) | DE1472752C3 (de) |
GB (1) | GB1109196A (de) |
NL (1) | NL6605717A (de) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4142895A (en) * | 1977-01-12 | 1979-03-06 | Agfa Gevaert Aktiengesellschaft | Photographic color developer composition |
US4987060A (en) * | 1989-04-03 | 1991-01-22 | Minnesota Mining And Manufacturing Company | Concentrated photographic developer composition and method of making it |
US6020113A (en) * | 1997-03-31 | 2000-02-01 | Fuji Photo Film Co., Ltd. | Process for producing photographic suspended processing agent composition |
US20080102213A1 (en) * | 2006-01-03 | 2008-05-01 | International Business Machines Corporation | Selective placement of carbon nanotubes through functionalization |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB9110482D0 (en) * | 1991-05-15 | 1991-07-03 | Ilford Ltd | Silver halide developing solutions |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB725573A (en) * | 1952-02-12 | 1955-03-09 | Kodak Ltd | Improvements in photographic development |
US2891861A (en) * | 1956-11-15 | 1959-06-23 | Laurence G Welliver | Fumaric acid stabilizer for single powder photographic developers |
US2915394A (en) * | 1955-12-29 | 1959-12-01 | Gen Aniline & Film Corp | Stabilizer for single powder photographic developer |
-
1965
- 1965-05-03 DE DE1472752A patent/DE1472752C3/de not_active Expired
-
1966
- 1966-04-18 US US543038A patent/US3467521A/en not_active Expired - Lifetime
- 1966-04-25 GB GB18037/66A patent/GB1109196A/en not_active Expired
- 1966-04-28 NL NL6605717A patent/NL6605717A/xx unknown
- 1966-05-03 BE BE680394D patent/BE680394A/xx unknown
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB725573A (en) * | 1952-02-12 | 1955-03-09 | Kodak Ltd | Improvements in photographic development |
US2915394A (en) * | 1955-12-29 | 1959-12-01 | Gen Aniline & Film Corp | Stabilizer for single powder photographic developer |
US2891861A (en) * | 1956-11-15 | 1959-06-23 | Laurence G Welliver | Fumaric acid stabilizer for single powder photographic developers |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4142895A (en) * | 1977-01-12 | 1979-03-06 | Agfa Gevaert Aktiengesellschaft | Photographic color developer composition |
US4987060A (en) * | 1989-04-03 | 1991-01-22 | Minnesota Mining And Manufacturing Company | Concentrated photographic developer composition and method of making it |
US6020113A (en) * | 1997-03-31 | 2000-02-01 | Fuji Photo Film Co., Ltd. | Process for producing photographic suspended processing agent composition |
US20080102213A1 (en) * | 2006-01-03 | 2008-05-01 | International Business Machines Corporation | Selective placement of carbon nanotubes through functionalization |
US20100145034A1 (en) * | 2006-01-03 | 2010-06-10 | International Business Machines Corporation | Selective placement of carbon nanotubes through functionalization |
US8283453B2 (en) * | 2006-01-03 | 2012-10-09 | International Business Machines Corporation | Selective placement of carbon nanotubes through functionalization |
US8859048B2 (en) | 2006-01-03 | 2014-10-14 | International Business Machines Corporation | Selective placement of carbon nanotubes through functionalization |
Also Published As
Publication number | Publication date |
---|---|
DE1472752C3 (de) | 1978-12-07 |
DE1472752A1 (de) | 1969-03-27 |
NL6605717A (de) | 1966-09-26 |
GB1109196A (en) | 1968-04-10 |
DE1472752B2 (de) | 1978-04-06 |
BE680394A (de) | 1966-11-03 |
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