US3467521A - Developer compositions containing sequestering agents - Google Patents

Developer compositions containing sequestering agents Download PDF

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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
Application number
US543038A
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English (en)
Inventor
Karl Frank
Max Heilmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Agfa Gevaert AG
Original Assignee
Agfa Gevaert AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Agfa Gevaert AG filed Critical Agfa Gevaert AG
Application granted granted Critical
Publication of US3467521A publication Critical patent/US3467521A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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)
US543038A 1965-05-03 1966-04-18 Developer compositions containing sequestering agents Expired - Lifetime US3467521A (en)

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 (enrdf_load_stackoverflow)
BE (1) BE680394A (enrdf_load_stackoverflow)
DE (1) DE1472752C3 (enrdf_load_stackoverflow)
GB (1) GB1109196A (enrdf_load_stackoverflow)
NL (1) NL6605717A (enrdf_load_stackoverflow)

Cited By (4)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9110482D0 (en) * 1991-05-15 1991-07-03 Ilford Ltd Silver halide developing solutions

Citations (3)

* Cited by examiner, † Cited by third party
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

Patent Citations (3)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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
DE1472752A1 (de) 1969-03-27
GB1109196A (en) 1968-04-10
DE1472752B2 (de) 1978-04-06
BE680394A (enrdf_load_stackoverflow) 1966-11-03
NL6605717A (enrdf_load_stackoverflow) 1966-09-26
DE1472752C3 (de) 1978-12-07

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