FR65219E - Photographic inversion process and new products for its implementation - Google Patents

Photographic inversion process and new products for its implementation

Info

Publication number
FR65219E
FR65219E FR65219DA FR65219E FR 65219 E FR65219 E FR 65219E FR 65219D A FR65219D A FR 65219DA FR 65219 E FR65219 E FR 65219E
Authority
FR
France
Prior art keywords
photographic
implementation
new products
inversion process
inversion
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
Other languages
French (fr)
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.)
Kodak Pathe SA
Original Assignee
Kodak Pathe SA
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 Kodak Pathe SA filed Critical Kodak Pathe SA
Application granted granted Critical
Publication of FR65219E publication Critical patent/FR65219E/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
    • G03C1/00—Photosensitive materials
    • G03C1/005—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein
    • G03C1/485—Direct positive emulsions
    • G03C1/48538—Direct positive emulsions non-prefogged, i.e. fogged after imagewise exposure
    • G03C1/48546—Direct positive emulsions non-prefogged, i.e. fogged after imagewise exposure characterised by the nucleating/fogging agent
    • G03C1/48561—Direct positive emulsions non-prefogged, i.e. fogged after imagewise exposure characterised by the nucleating/fogging agent hydrazine compounds

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)
FR65219D 1951-03-28 1952-03-28 Photographic inversion process and new products for its implementation Expired FR65219E (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US218072A US2604400A (en) 1951-03-28 1951-03-28 Naphthyl hydrazine sulfonic acids in direct positive photographic processes

Publications (1)

Publication Number Publication Date
FR65219E true FR65219E (en) 1956-02-07

Family

ID=22813626

Family Applications (1)

Application Number Title Priority Date Filing Date
FR65219D Expired FR65219E (en) 1951-03-28 1952-03-28 Photographic inversion process and new products for its implementation

Country Status (5)

Country Link
US (1) US2604400A (en)
BE (1) BE510220A (en)
DE (1) DE925691C (en)
FR (1) FR65219E (en)
GB (1) GB712355A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE512294A (en) * 1951-06-27
NL246283A (en) * 1958-12-11

Also Published As

Publication number Publication date
GB712355A (en) 1954-07-21
BE510220A (en)
DE925691C (en) 1955-03-28
US2604400A (en) 1952-07-22

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