EP0736800B1 - Matériau photographique couleur à l'halogénure d'argent - Google Patents

Matériau photographique couleur à l'halogénure d'argent Download PDF

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Publication number
EP0736800B1
EP0736800B1 EP96104127A EP96104127A EP0736800B1 EP 0736800 B1 EP0736800 B1 EP 0736800B1 EP 96104127 A EP96104127 A EP 96104127A EP 96104127 A EP96104127 A EP 96104127A EP 0736800 B1 EP0736800 B1 EP 0736800B1
Authority
EP
European Patent Office
Prior art keywords
layer
silver halide
color
layers
photographic
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
Application number
EP96104127A
Other languages
German (de)
English (en)
Other versions
EP0736800A1 (fr
Inventor
Arno Dr. Schmuck
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.)
Agfa Gevaert AG
Original Assignee
Agfa Gevaert 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 Agfa Gevaert AG filed Critical Agfa Gevaert AG
Publication of EP0736800A1 publication Critical patent/EP0736800A1/fr
Application granted granted Critical
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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
    • G03C1/815—Photosensitive materials characterised by the base or auxiliary layers characterised by means for filtering or absorbing ultraviolet light, e.g. optical bleaching
    • 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
    • G03C1/035—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein characterised by the crystal form or composition, e.g. mixed grain
    • G03C2001/03594—Size of the grains

Definitions

  • Color photographic materials always contain UV absorbers for light stability to improve the image dyes present in the material after processing or to obtain. UV-rich daylight can bleach the image dyes.
  • the compounds commonly used in photographic materials Absorption of UV light are, for example, aryl-substituted benzotriazole compounds (US 3,533,794, DE 42 29 233), 4-thiazolidone compounds (US 3 314 794, (US 3 352 681), benzophenone compounds (JP-A-2784/71), Cinnamic acid esters (US 3,705,805, US 3,707,375), butadiene compounds (US 4,045,229), benzoxazole compounds (US 3,700,455), aryl substituted Triazine compounds (DE 21 13 833, EP 520 938, EP 530 135, EP 531 258) and Benzoylthiophene compounds (GB 973 919, EP 521 823).
  • UV-absorbing couplers or polymers which are obtained by pickling in one special layer can be fixed.
  • a disadvantage of these organic compounds is that they are limited in themselves Dimensions are light stable. When the UV absorbing compounds by light destroyed, the image dyes begin to fade.
  • the object of the invention was to provide UV-absorbing substances, which are suitable for long-term protection of photographic materials.
  • TiO 2 pigments whose average primary particle diameter is 10 to 100 nm, preferably 15 to 30 nm, which are transparent and with conventional white pigments based on TiO 2 (rutile and anatase) an optimal particle size of about 0.2 ⁇ m have hardly any light-scattering properties. They are also colorless, especially if the proportion of other metal oxides is as small as possible and is, for example, less than 5% by weight, preferably less than 2% by weight, and are used in a specific layer.
  • the TiO 2 pigments according to the invention are particularly advantageous if more than 80% of the primary particles have a diameter of less than 100 nm.
  • Transparent TiO 2 pigments with the stated properties are known, for example, from Gunter Buxbaum, Industrial Inorganic Pigments, VCH Weinheim, New York, Basel, Cambridge, Tokyo (1993), pages 227 to 228.
  • the TiO 2 pigments according to the invention are used in the color photographic material in a layer which is no further from the light source than the layer in which the dye to be protected from UV light and formed by the development is located.
  • the TiO 2 pigments according to the invention are preferably used in a layer which is arranged closer to the light source than the layer containing the dye to be protected.
  • the TiO 2 pigments according to the invention are used in particular in an amount of 0.3 mg to 5 g / m 2, preferably 30 mg to 3 g / m 2 of photographic material.
  • the TiO 2 pigments according to the invention can be dispersed in a gelatin solution and thus cast into a layer. This results in a considerably thinner layer than with conventional UV absorbers, which are usually distributed in high-boiling organic solvents and must therefore be emulsified as fine droplets in a gelatin solution.
  • the TiO 2 pigments according to the invention give the dyes of the photographic image obtained after color development permanent protection against UV light since, unlike organic UV absorbers, they are not destroyed by UV light.
  • the TiO 2 pigments according to the invention are preferably added to color photographic print materials, which are color photographic paper and transparent color photographic film for display purposes.
  • color photographic materials are color negative films, color reversal films, Color positive films, color photographic paper, color reversal photographic paper, color-sensitive materials for the color diffusion transfer process or the silver color bleaching process.
  • the photographic materials consist of a support on which at least one photosensitive silver halide emulsion layer is applied.
  • Suitable as a carrier especially thin films and foils.
  • the color photographic materials usually contain at least one red-sensitive, green sensitive and blue sensitive silver halide emulsion layer and optionally intermediate layers and protective layers.
  • these layers can vary be arranged. This is shown for the most important products:
  • Color photographic films such as color negative films and color reversal films show in in the following order on the carrier 2 or 3 red-sensitive, cyan-coupling silver halide emulsion layers, 2 or 3 green-sensitive, purple-coupling silver halide emulsion layers and 2 or 3 blue-sensitive, yellow-coupling silver halide emulsion layers.
  • the layers same spectral sensitivity differ in their photographic sensitivity, with the less sensitive sub-layers usually closer arranged to the carrier than the higher sensitive sub-layers.
  • a yellow filter layer is applied, which prevents blue light from entering the to get layers below.
  • Color photographic paper which is usually much less sensitive to light as a color photographic film, points in the order given below usually a blue-sensitive, yellow-coupling silver halide emulsion layer on the support, a green sensitive, purple coupling silver halide emulsion layer and a red sensitive, cyan-coupling silver halide emulsion layer on; the yellow filter layer can be omitted.
  • Deviations in the number and arrangement of the photosensitive layers can occur to achieve certain results. For example, you can all highly sensitive layers in one layer package and all low-sensitive layers Layers to another layer package in a photographic film be summarized to increase the sensitivity (DE 25 30 645).
  • Essential components of the photographic emulsion layers are binders, Silver halide grains and color couplers.
  • Photographic materials with camera sensitivity usually contain silver bromoiodide emulsions, which may also contain small amounts of silver chloride can contain.
  • Photographic copying materials contain either silver chloride bromide emulsions with up to 80 mol% AgBr or silver chloride bromide emulsions with over 95 mol% AgCl.
  • the maximum absorption of that from the couplers and the color developer oxidation product Dyes formed are preferably in the following areas: Yellow coupler 430 to 460 nm, purple coupler 540 to 560 nm, cyan coupler 630 up to 700 nm.
  • hydrophobic color couplers but also other hydrophobic components of the layers, are usually in high-boiling organic solvents dissolved or dispersed. These solutions or dispersions are then in one emulsified aqueous binder solution (usually gelatin solution) and lie after drying the layers as fine droplets (0.05 to 0.8 ⁇ m diameter) in the layers before.
  • aqueous binder solution usually gelatin solution
  • the usually between layers of different spectral sensitivity arranged non-light-sensitive intermediate layers can contain agents which an undesirable diffusion of developer oxidation products from a photosensitive to another photosensitive layer with different prevent spectral sensitization.
  • Suitable connections can be found in Research Disclosure 37254, Part 7 (1995), p. 292 and in Research Disclosure 37038, Part III (1995), p. 84.
  • the photographic material can also additionally contain UV light-absorbing compounds, whiteners, spacers, filter dyes, formalin scavengers, light stabilizers, antioxidants, D min dyes, additives to improve the stability of dyes, couplers and whites and to reduce the color fog, plasticizers (latices). , Biocide and others included.
  • Suitable compounds can be found in Research Disclosure 37254, Part 8 (1995), P. 292 and in Research Disclosure 37038, parts IV, V, VI, VII, X, XI and XIII (1995), p. 84 ff.
  • the layers of color photographic materials are usually hardened, i.e. the binder used, preferably gelatin, is by suitable cross-linked chemical processes.
  • Suitable hardener substances can be found in Research Disclosure 37254, Part 9 (1995), p. 294 and in Research Disclosure 37038, Part XII (1995), page 86.
  • the material is exposed through a step wedge each with a filter which is permeable to red light, green light and blue light, so that a cyan, purple and yellow color separation is obtained.
  • the exposed material is processed as follows: step time temperature Develop 45 sec 35 ° C Fix bleach 45 sec 35 ° C Water 90 sec 33 ° C
  • the processing baths were prepared according to the following regulation:
  • Examples 2a to 2f show the overall better light stability, especially with high amounts of radiation (24 million Lxh).

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)

Claims (4)

  1. Matériau à l'halogénure d'argent pour photographie en couleurs, comprenant une couche dans laquelle on obtient un colorant via le développement, caractérisé en ce qu'il contient, dans au moins une couche qui n'est pas plus éloignée de la source lumineuse que la couche mentionnée en premier lieu, un pigment de dioxyde de titane possédant un diamètre moyen de particules primaires de 10 à 100 nm.
  2. Matériau à l'halogénure d'argent pour photographie en couleurs selon la revendication 1, caractérisé en ce que le pigment de dioxyde de titane présente un diamètre moyen de particules primaires de 15 à 30 nm.
  3. Matériau à l'halogénure d'argent pour photographie en couleurs selon la revendication 1, caractérisé en ce qu'on met en oeuvre le pigment de dioxyde de titane en une quantité de 0,3 mg à 5 g/m2 du matériau photographique.
  4. Matériau de copie à l'halogénure d'argent pour photographie en couleurs, comprenant une couche dans laquelle on obtient un colorant via le développement, caractérisé en ce qu'il contient, dans au moins une couche qui n'est pas plus éloignée de la source lumineuse que la couche mentionnée en premier lieu, un pigment de dioxyde de titane possédant un diamètre moyen de particules primaires de 10 à 100 nm.
EP96104127A 1995-03-28 1996-03-15 Matériau photographique couleur à l'halogénure d'argent Expired - Lifetime EP0736800B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19511316 1995-03-28
DE19511316A DE19511316A1 (de) 1995-03-28 1995-03-28 Farbfotografisches Silberhalogenidmaterial

Publications (2)

Publication Number Publication Date
EP0736800A1 EP0736800A1 (fr) 1996-10-09
EP0736800B1 true EP0736800B1 (fr) 1998-06-24

Family

ID=7757943

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96104127A Expired - Lifetime EP0736800B1 (fr) 1995-03-28 1996-03-15 Matériau photographique couleur à l'halogénure d'argent

Country Status (4)

Country Link
US (1) US5731136A (fr)
EP (1) EP0736800B1 (fr)
JP (1) JPH08272041A (fr)
DE (2) DE19511316A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19613992A1 (de) * 1996-04-09 1997-10-16 Agfa Gevaert Ag Farbfotografisches Silberhalogenidmaterial
DE19619946A1 (de) * 1996-05-17 1997-11-20 Agfa Gevaert Ag Farbfotografisches Silberhalogenidmaterial
FR2765355A1 (fr) * 1997-06-25 1999-01-01 Eastman Kodak Co Nouveau film photographique inversible pour caisson lumineux
DE19746513A1 (de) * 1997-10-22 1999-04-29 Agfa Gevaert Ag Farbfotografisches Aufzeichnungsmaterial
DE19832937A1 (de) * 1998-07-22 2000-01-27 Agfa Gevaert Ag Farbfotografisches Aufzeichnungsmaterial

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5075206A (en) * 1989-03-28 1991-12-24 Mitsubishi Paper Mills Limited Photographic support with titanium dioxide pigment polyolefin layer on a substrate
DE4302896A1 (de) * 1993-02-02 1994-08-04 Degussa Eisenoxidhaltiges Titandioxidpulver

Also Published As

Publication number Publication date
EP0736800A1 (fr) 1996-10-09
US5731136A (en) 1998-03-24
DE19511316A1 (de) 1996-10-02
JPH08272041A (ja) 1996-10-18
DE59600294D1 (de) 1998-07-30

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