GB1032925A - A photographic developer - Google Patents

A photographic developer

Info

Publication number
GB1032925A
GB1032925A GB1096363A GB1096363A GB1032925A GB 1032925 A GB1032925 A GB 1032925A GB 1096363 A GB1096363 A GB 1096363A GB 1096363 A GB1096363 A GB 1096363A GB 1032925 A GB1032925 A GB 1032925A
Authority
GB
United Kingdom
Prior art keywords
photographic developer
photographic
ferrania
pyrazolidone
dialkyl
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
Application number
GB1096363A
Inventor
Luigi Franchi
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.)
Ferrania SpA
Original Assignee
Ferrania SpA
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 Ferrania SpA filed Critical Ferrania SpA
Publication of GB1032925A publication Critical patent/GB1032925A/en
Expired legal-status Critical Current

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
    • 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
    • G03C7/4136—Developers p-Phenylenediamine or derivatives thereof

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Developing Agents For Electrophotography (AREA)

Abstract

1,032,925. Photographic developer. FERRANIA S.p.A. March 20,1963,No.10963/63. Heading G2C. A photographic developer suitable for both black-and-white and colour development comprises 2g./1.each of 1-phenyl-3-pyrazolidone and an N:N -dialkyl-para-phenylene-diamine.
GB1096363A 1962-10-11 1963-03-20 A photographic developer Expired GB1032925A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR912001A FR1343731A (en) 1962-10-11 1962-10-11 Process for mixed white and black photographic development to achieve an effect equivalent to an increase in the original sensitivity, and mixed developer thereof

Publications (1)

Publication Number Publication Date
GB1032925A true GB1032925A (en) 1966-06-15

Family

ID=8788539

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1096363A Expired GB1032925A (en) 1962-10-11 1963-03-20 A photographic developer

Country Status (3)

Country Link
BE (1) BE629777A (en)
FR (1) FR1343731A (en)
GB (1) GB1032925A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3941599A (en) * 1972-11-15 1976-03-02 Minnesota Mining And Manufacturing Company Method for obtaining a color contrast photographic image, photographic element and development composition suitable for the realization of said method

Also Published As

Publication number Publication date
BE629777A (en)
FR1343731A (en) 1963-11-22

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