FR445067A - Improvements in the development of photographic images - Google Patents

Improvements in the development of photographic images

Info

Publication number
FR445067A
FR445067A FR445067A FR445067DA FR445067A FR 445067 A FR445067 A FR 445067A FR 445067 A FR445067 A FR 445067A FR 445067D A FR445067D A FR 445067DA FR 445067 A FR445067 A FR 445067A
Authority
FR
France
Prior art keywords
development
photographic images
photographic
images
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
FR445067A
Other languages
French (fr)
Inventor
William Hay Caldwell
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of FR445067A publication Critical patent/FR445067A/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
    • G03C5/00—Photographic processes or agents therefor; Regeneration of such processing agents
    • G03C5/26—Processes using silver-salt-containing photosensitive materials or agents therefor
    • G03C5/29—Development processes or agents therefor
    • G03C5/30—Developers
    • G03C5/3014—Hydrazine; Hydroxylamine; Urea; Derivatives thereof

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
FR445067A 1911-06-21 1912-06-17 Improvements in the development of photographic images Expired FR445067A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB191114744T 1911-06-21

Publications (1)

Publication Number Publication Date
FR445067A true FR445067A (en) 1912-11-02

Family

ID=32564976

Family Applications (1)

Application Number Title Priority Date Filing Date
FR445067A Expired FR445067A (en) 1911-06-21 1912-06-17 Improvements in the development of photographic images

Country Status (2)

Country Link
FR (1) FR445067A (en)
GB (1) GB191114744A (en)

Also Published As

Publication number Publication date
GB191114744A (en) 1912-06-20

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