GB421721A - Improvements in or relating to anti-halation coatings for photographic supports - Google Patents

Improvements in or relating to anti-halation coatings for photographic supports

Info

Publication number
GB421721A
GB421721A GB1574033A GB1574033A GB421721A GB 421721 A GB421721 A GB 421721A GB 1574033 A GB1574033 A GB 1574033A GB 1574033 A GB1574033 A GB 1574033A GB 421721 A GB421721 A GB 421721A
Authority
GB
United Kingdom
Prior art keywords
silver
antihalation layer
gelatine
dyed
dye
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
GB1574033A
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.)
REGINALD BENJAMIN KING
Original Assignee
REGINALD BENJAMIN KING
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 REGINALD BENJAMIN KING filed Critical REGINALD BENJAMIN KING
Priority to GB1574033A priority Critical patent/GB421721A/en
Publication of GB421721A publication Critical patent/GB421721A/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
    • G03C1/76—Photosensitive materials characterised by the base or auxiliary layers
    • G03C1/825—Photosensitive materials characterised by the base or auxiliary layers characterised by antireflection means or visible-light filtering means, e.g. antihalation

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

421,721. Photographic plates. RENWICK, F. F., 6, Reed Pond Walk, Gidea Park, and KING, R. B., Merton, Margaret Avenue, Shenfield, both in Essex. May 31, 1933, No. 15740. [Class 98 (ii)] An antihalation layer for plates or films comprises silver chloride or bromide suspended in gelatine &c. and dyed with a dye which is fast to the silver salt and forms an insoluble lake containing a very small proportion of dye. The silver salt, which is relatively insensitive to light, is removed in the fixing bath leaving only a very small dye stain which may, if desired, be eliminated by leaching or bleaching. For ordinary emulsions, yellow, orange or red dyes are employed and for panchromatic emulsions, blue-green or black dyes. The antihalation layer may be applied to the back of the support or between the support and emulsion layer. Examples are given involving a gelatine-silver-iodobromide negative emulsion with an intermediate antihalation layer consisting of dyed silver chloride suspended in gelatine. A slow silver bromide emulsion may be employed in place of the silver chloride. The invention is applicable to medium to high speed emulsions. The Provisional Specification refers to the use of a dyed insoluble silver salt for the antihalation layer.
GB1574033A 1933-05-31 1933-05-31 Improvements in or relating to anti-halation coatings for photographic supports Expired GB421721A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1574033A GB421721A (en) 1933-05-31 1933-05-31 Improvements in or relating to anti-halation coatings for photographic supports

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1574033A GB421721A (en) 1933-05-31 1933-05-31 Improvements in or relating to anti-halation coatings for photographic supports

Publications (1)

Publication Number Publication Date
GB421721A true GB421721A (en) 1934-12-31

Family

ID=10064633

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1574033A Expired GB421721A (en) 1933-05-31 1933-05-31 Improvements in or relating to anti-halation coatings for photographic supports

Country Status (1)

Country Link
GB (1) GB421721A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3333960A (en) * 1962-11-29 1967-08-01 Agfa Ag Antihalation and filter layers

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3333960A (en) * 1962-11-29 1967-08-01 Agfa Ag Antihalation and filter layers

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