US2180409A - Photographic material - Google Patents
Photographic material Download PDFInfo
- Publication number
- US2180409A US2180409A US174058A US17405837A US2180409A US 2180409 A US2180409 A US 2180409A US 174058 A US174058 A US 174058A US 17405837 A US17405837 A US 17405837A US 2180409 A US2180409 A US 2180409A
- Authority
- US
- United States
- Prior art keywords
- layers
- photographic
- phthalocyanines
- photographic material
- emulsion
- 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 - Lifetime
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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
Definitions
- the sensitivity of the emulsion may be considerably lowered by many soluble dyestuffs and also, indeed, by pigments which are practically insoluble and might therefore be expected to have no effect, for example colored lakes produced by precipitation of basic triphenylmethane dyestufl's or xanthene dyestufl's with phosphotungstic acid and pigments of the indigo series and indan-.
- This invention is based on the observation that the phthalocyanines and their metal compounds,
- dyestufl's of bright blue, blue green and green tints are especially suitable for use in photographic silver halide emulsions.
- phthalocyanines are useful in all cases in which thephotographic material is one wherein there is the possibility that the dyestuff may act upon the photographic silver halide emulsion;
- Y dyestufls especially the sulfonated phthalocyanines which are soluble in water, may be used for making colored layers of all kinds, for example fllter layers,anti-halation layers, colored emulsion layers, whether single layers 'or multi plelayers, coating layers or the like.
- the phthalocyanines are also suitable for blueing barlte paper, particularly copper phth'alocyanines, since an emulsion applied to :barite paper is not uniavourably influenced.
- the insoluble phthalocyanines for instance phthalocyanines which are free from metal, are especially useful i'or coloring emulsions for the purposes of color photography. Information concerning phthalo cyanines is to be found "in the work of Linstead.
- a photographic, material comprising a silver halide emulsion layer containing a dye selected from the group consisting of a phthalocyanine, a suli'onated phthalocyanine and a metal phthalocyanine.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Paper (AREA)
Description
I Patented Nov. 21, 1939 UNITED STATES PATENT OFFICE- PHOTOGRAPHIG Walter Frankenburger, Ludwigshafen, and Hermann Schulz, Heidelberg, Germany, assignors, by mesne assignments, to' Agfa Ansco Corporation, Binghamton, N. Y., a corporationo! A Delaware No Drawing. Application November 11, 1937,
fggiial No. 174,058. In Germany November 19,
1 Claim. (Cl. 95-8) halation layers or filter layers and for coloringv photographic emulsions. There exists in a more or less strong degree the possibility that the coloring substances used will affect the photographic silver halide emulsions when first added or during further treatment. It is known that the properties of photographic silver halide emulsions are unfavourably influenced even by very small proportions of foreign substances. In particular the sensitivity of the emulsion may be considerably lowered by many soluble dyestuffs and also, indeed, by pigments which are practically insoluble and might therefore be expected to have no effect, for example colored lakes produced by precipitation of basic triphenylmethane dyestufl's or xanthene dyestufl's with phosphotungstic acid and pigments of the indigo series and indan-.
threne series. The choice of suitable dyestufls applicable for the productionof photographic materials is small, especially thoseof blue to reen tint.
This invention is based on the observation that the phthalocyanines and their metal compounds,
among which are dyestufl's of bright blue, blue green and green tints, are especially suitable for use in photographic silver halide emulsions.
These phthalocyanines are useful in all cases in which thephotographic material is one wherein there is the possibility that the dyestuff may act upon the photographic silver halide emulsion;
more especially the sensitivity of the photographic emulsion is only very slightly influenced by the said dyestuffs.
These Y dyestufls, especially the sulfonated phthalocyanines which are soluble in water, may be used for making colored layers of all kinds, for example fllter layers,anti-halation layers, colored emulsion layers, whether single layers 'or multi plelayers, coating layers or the like. The phthalocyanines are also suitable for blueing barlte paper, particularly copper phth'alocyanines, since an emulsion applied to :barite paper is not uniavourably influenced. The insoluble phthalocyanines, for instance phthalocyanines which are free from metal, are especially useful i'or coloring emulsions for the purposes of color photography. Information concerning phthalo cyanines is to be found "in the work of Linstead.
and his co-workers in the Journal of the Chemical Society, vol. 136 (1934) pages 1016 and following'.\ 1
What we claim is:
A photographic, material comprising a silver halide emulsion layer containing a dye selected from the group consisting of a phthalocyanine, a suli'onated phthalocyanine and a metal phthalocyanine.
WALTER HERMANN SCHULZ.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2180409X | 1936-11-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2180409A true US2180409A (en) | 1939-11-21 |
Family
ID=7988853
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US174058A Expired - Lifetime US2180409A (en) | 1936-11-19 | 1937-11-11 | Photographic material |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US2180409A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2600377A (en) * | 1948-08-06 | 1952-06-17 | Eastman Kodak Co | Process for the preparation of sulfonated copper phthalocyanine dye |
| US2631499A (en) * | 1945-07-23 | 1953-03-17 | Rile Coe Filter Process Inc | Selected light transmission and protective materials |
| US3178285A (en) * | 1960-03-24 | 1965-04-13 | Ciba Ltd | Photographic layers for the silver dyestuff bleaching process |
-
1937
- 1937-11-11 US US174058A patent/US2180409A/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2631499A (en) * | 1945-07-23 | 1953-03-17 | Rile Coe Filter Process Inc | Selected light transmission and protective materials |
| US2600377A (en) * | 1948-08-06 | 1952-06-17 | Eastman Kodak Co | Process for the preparation of sulfonated copper phthalocyanine dye |
| US3178285A (en) * | 1960-03-24 | 1965-04-13 | Ciba Ltd | Photographic layers for the silver dyestuff bleaching process |
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