BE510220A - - Google Patents

Info

Publication number
BE510220A
BE510220A BE510220DA BE510220A BE 510220 A BE510220 A BE 510220A BE 510220D A BE510220D A BE 510220DA BE 510220 A BE510220 A BE 510220A
Authority
BE
Belgium
Application number
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.)
Publication of BE510220A publication Critical patent/BE510220A/xx

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)
BE510220D 1951-03-28 BE510220A (ko)

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
BE510220A true BE510220A (ko)

Family

ID=22813626

Family Applications (1)

Application Number Title Priority Date Filing Date
BE510220D BE510220A (ko) 1951-03-28

Country Status (5)

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

Families Citing this family (2)

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

Also Published As

Publication number Publication date
DE925691C (de) 1955-03-28
FR65219E (fr) 1956-02-07
US2604400A (en) 1952-07-22
GB712355A (en) 1954-07-21

Similar Documents

Publication Publication Date Title
AT195616B (ko)
AT197970B (ko)
FR1050561A (ko)
AT192177A (ko)
BE513074A (ko)
BE501372A (ko)
BE16335A (ko)
BE422752A (ko)
BE466790A (ko)
BE477312A (ko)
BE480026A (ko)
BE491015A (ko)
BE491096A (ko)
BE494945A (ko)
BE498467A (ko)
BE498982A (ko)
BE500297A (ko)
BE500588A (ko)
BE500688A (ko)
BE500744A (ko)
BE500745A (ko)
BE500841A (ko)
BE500989A (ko)
BE500995A (ko)
BE500996A (ko)