GB232307A - New or improved light-sensitive materials for photography and cinematography - Google Patents

New or improved light-sensitive materials for photography and cinematography

Info

Publication number
GB232307A
GB232307A GB66524A GB66524A GB232307A GB 232307 A GB232307 A GB 232307A GB 66524 A GB66524 A GB 66524A GB 66524 A GB66524 A GB 66524A GB 232307 A GB232307 A GB 232307A
Authority
GB
United Kingdom
Prior art keywords
silver
sensitizing
cyanide
acids
mercuric
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
GB66524A
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
Priority to GB66524A priority Critical patent/GB232307A/en
Publication of GB232307A publication Critical patent/GB232307A/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
    • G03C1/72—Photosensitive compositions not covered by the groups G03C1/005 - G03C1/705
    • G03C1/725—Photosensitive compositions not covered by the groups G03C1/005 - G03C1/705 containing inorganic compounds
    • G03C1/7256—Mercury salts

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)

Abstract

232,307. Martinez, M. Jan. 9, 1924. No Patent granted (Sealing fee not paid). Plates, films, and papers; developing; fixing.- Mercuric cyanide, or a mixture of a mercury salt and a cyanide, is employed in a sensitive surface. Sensitizers may be coated on to the surface together with the mercuric cyanide and include acids, salts of organic acids such as alkali oxalates, used with or without a bromide, or tartrates, chloral, alkali chlorides, ferric salts, particularly of organic acids, and silver nitrate. An albumen or gelatine size, small amounts of oxalic, tartaric, or acetic acids, sodium sulphite or phosphate, stannic chloride or ammonia may also be added to the sensitizing solution. To increase the speed there may also be added to the solution basic mercuric cyanide, fluorescein or a sodium salt thereof, silver fluoride, a halogen acid, a sulphocyanide, formic acid or a formate, methyl, ethyl, or other alcohol, acetone and suitable sizes and colloids. The surface is preferably dried rapidly, for example by a current of hot air, after sensitizing. When used in an emulsion the mercuric cyanide may be refined by any of the methods used with silver emulsions. After exposure, the surface is washed with water or with a solution of one or more of the following fixing reagents : acetic acid or an acetate such as lead or chromium acetate, hydrochloric, arsenious, or arsenic acids, stannous or an alkali chloride, silver nitrate followed by sodium thiosulphate, and potassium ferricyanide. The surface may also be fixed by pressing it while moist against a silver or silvered plate or a surface of reduced silver. Examples are given of sensitizing solutions used. The Provisional Specification describes also the use of other salts of mercury, including mercuric nitrate or chloride or mercurous nitrate and also states that collodion in alcoholic solution, nitric acid, and amvl acetate may be employed in the sensitizing solutions.
GB66524A 1924-01-09 1924-01-09 New or improved light-sensitive materials for photography and cinematography Expired GB232307A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB66524A GB232307A (en) 1924-01-09 1924-01-09 New or improved light-sensitive materials for photography and cinematography

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB66524A GB232307A (en) 1924-01-09 1924-01-09 New or improved light-sensitive materials for photography and cinematography

Publications (1)

Publication Number Publication Date
GB232307A true GB232307A (en) 1925-04-09

Family

ID=9708360

Family Applications (1)

Application Number Title Priority Date Filing Date
GB66524A Expired GB232307A (en) 1924-01-09 1924-01-09 New or improved light-sensitive materials for photography and cinematography

Country Status (1)

Country Link
GB (1) GB232307A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2459136A (en) * 1944-09-07 1949-01-11 Gen Aniline & Film Corp Dry developing negative
US2764484A (en) * 1950-10-03 1956-09-25 Hartford Nat Bank & Trust Co Method of forming photographic images by physical developing
US2929709A (en) * 1951-07-10 1960-03-22 Philips Corp Photographic process

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2459136A (en) * 1944-09-07 1949-01-11 Gen Aniline & Film Corp Dry developing negative
US2764484A (en) * 1950-10-03 1956-09-25 Hartford Nat Bank & Trust Co Method of forming photographic images by physical developing
US2929709A (en) * 1951-07-10 1960-03-22 Philips Corp Photographic process

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