GB387519A - Filter layers for photographic purposes - Google Patents

Filter layers for photographic purposes

Info

Publication number
GB387519A
GB387519A GB7080/32A GB708032A GB387519A GB 387519 A GB387519 A GB 387519A GB 7080/32 A GB7080/32 A GB 7080/32A GB 708032 A GB708032 A GB 708032A GB 387519 A GB387519 A GB 387519A
Authority
GB
United Kingdom
Prior art keywords
filter layers
march
filters
prepared
lake
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
GB7080/32A
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.)
IG Farbenindustrie AG
Original Assignee
IG Farbenindustrie AG
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 IG Farbenindustrie AG filed Critical IG Farbenindustrie AG
Publication of GB387519A publication Critical patent/GB387519A/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
    • G03C1/83—Organic dyestuffs therefor
    • G03C1/833—Dyes containing a metal atom

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optical Filters (AREA)

Abstract

387,519. Photographic colour-filters. 1. G. FARBENINDUSTRIE AKT.-GES., Frankfort-on-Main, Germany. March 9, 1932, No. 7080. Convention date, March 9, 1931. [Class 98 (ii).] Filter layers such as are used in multipack processes of colour photography are prepared from a mixture of a water insoluble organic dyestuff lake with a binding agent by pouring in the usual manner. In an example, a lake formed by mixing aqueous solutions of Congo red and barium chloride is washed by decantation and mixed with a gelatine solution. The filters thus prepared may be decolorized by means of acidified sodium hydrosulphite.
GB7080/32A 1931-03-09 1932-03-09 Filter layers for photographic purposes Expired GB387519A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE387519X 1931-03-09

Publications (1)

Publication Number Publication Date
GB387519A true GB387519A (en) 1933-02-09

Family

ID=6371137

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7080/32A Expired GB387519A (en) 1931-03-09 1932-03-09 Filter layers for photographic purposes

Country Status (1)

Country Link
GB (1) GB387519A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0703494A1 (en) * 1994-09-22 1996-03-27 Fuji Photo Film Co., Ltd. Silver halide photographic material containing infrared absorbing colorant

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0703494A1 (en) * 1994-09-22 1996-03-27 Fuji Photo Film Co., Ltd. Silver halide photographic material containing infrared absorbing colorant
US5714307A (en) * 1994-09-22 1998-02-03 Fuji Photo Film Co., Ltd. Silver halide photographic material containing infrared absorbing colorant
US5853969A (en) * 1994-09-22 1998-12-29 Fuji Photo Film Co., Ltd. Silver halide photographic material containing infrared absorbing colorant

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