EP0275234A2 - Couches pour matériaux photographiques - Google Patents

Couches pour matériaux photographiques Download PDF

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Publication number
EP0275234A2
EP0275234A2 EP88810007A EP88810007A EP0275234A2 EP 0275234 A2 EP0275234 A2 EP 0275234A2 EP 88810007 A EP88810007 A EP 88810007A EP 88810007 A EP88810007 A EP 88810007A EP 0275234 A2 EP0275234 A2 EP 0275234A2
Authority
EP
European Patent Office
Prior art keywords
layers
polysaccharide
gelatin
layer
gellan gum
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.)
Withdrawn
Application number
EP88810007A
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German (de)
English (en)
Other versions
EP0275234A3 (en
Inventor
Ute Dr. Eggert
Andreas Dr. Engel
Ekkehard Dr. Kramp
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.)
Ilford Imaging Switzerland GmbH
Original Assignee
Ciba Geigy AG
Ilford 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 Ciba Geigy AG, Ilford AG filed Critical Ciba Geigy AG
Publication of EP0275234A2 publication Critical patent/EP0275234A2/fr
Publication of EP0275234A3 publication Critical patent/EP0275234A3/de
Withdrawn legal-status Critical Current

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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
    • G03C7/00—Multicolour photographic processes or agents therefor; Regeneration of such processing agents; Photosensitive materials for multicolour processes
    • G03C7/28—Silver dye bleach processes; Materials therefor; Preparing or processing such materials
    • 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
    • G03C1/04—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein with macromolecular additives; with layer-forming substances
    • 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
    • G03C1/7614—Cover layers; Backing layers; Base or auxiliary layers characterised by means for lubricating, for rendering anti-abrasive or for preventing adhesion
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S430/00—Radiation imagery chemistry: process, composition, or product thereof
    • Y10S430/1053—Imaging affecting physical property or radiation sensitive material, or producing nonplanar or printing surface - process, composition, or product: radiation sensitive composition or product or process of making binder containing
    • Y10S430/1055—Radiation sensitive composition or product or process of making
    • Y10S430/106—Binder containing

Definitions

  • the present invention relates to layers for photographic materials.
  • Photographic materials usually contain one or more gelatin-containing layers on a support, at least one of these layers being photosensitive.
  • Silver halide emulsions are present in the light-sensitive layers, each of which can be sensitized to light of a specific wavelength.
  • these layers may have other components, such as e.g. Color couplers, image dyes or filter dyes.
  • the light-sensitive layers can be arranged in the vicinity of light-insensitive gelatin layers, so-called auxiliary layers.
  • Auxiliary layers in photographic materials are free of photosensitive components. They usually contain only gelatin and can perform a wide variety of functions in the material in this form or with suitable additives, such as filter dyes. Depending on the arrangement of the auxiliary layers in the material, they are referred to as lower, intermediate or protective layers.
  • Auxiliary layers are necessary in photographic materials for various reasons, e.g. for the spatial separation of neighboring light-sensitive layers, for preventing undesired interactions, for promoting adhesion with the layer support or as protective layers against mechanical injuries.
  • Auxiliary layers, in particular sublayers, can also be used to eliminate a phenomenon called "mottle", which is particularly disturbing in the form of density fluctuations in the form of density fluctuations.
  • polyethylene-coated papers which are used as supports are generally not completely flat, but have a surface structure. This surface structure is almost compensated for by the application of photographic casting solutions and in this way causes local differences in the application weight, which are expressed as "mottle" in the processed material. This effect can be suppressed if the support is first applied to the support using the method described in Research Disclosure, November 1984, 24844, which is only poured with the solutions of the upper layers of the layered ensemble in the solidified but not yet dried state.
  • auxiliary layers increase the total layer thickness of the photographic material, which reduces the processing and drying speed. It is therefore advantageous if the thickness of the auxiliary layers can be kept to a minimum. For the same reasons, efforts are also being made to keep the thickness of the light-sensitive layers as small as possible.
  • Multi-layer casting processes such as cascade or curtain casting, however, require a coordinated viscosity of the different casting solutions to be applied simultaneously, since otherwise the layers will mix or other casting problems will occur.
  • Thin gelatin layers which are to be poured on further in the solidified state according to the method described above, melt easily again, for example, which naturally impairs their function.
  • a further object of the present invention is therefore to propose photographic layers which gel within a very short time when they come into contact with the support.
  • the present invention thus relates to layers for photographic materials, characterized in that they contain a polysaccharide which is formed extracellularly by bacterial fermentation of glucose, maltose, sucrose or xylose, optionally in the presence of yeast, or yeast or casein hydrolyzate, and with gives mono-, bi- and / or trivalent metal ions gels whose solidification temperature is between 24 and 45 ° C.
  • the polysaccharides which can be used according to the invention can be obtained from the carbohydrates mentioned, if appropriate in the presence of the nitrogen sources also mentioned. They form both with mono- and / or with di- and / or trivalent metal ions, preferably alkali and alkaline earth metal ions such as Li+, Na+, K+, Mg2+, Ca2+, Sr2+ and Ba2+ but also B3+ and Al3+ and transition metal ions such as Zn2+, Cu2+ and Ni2+ gels, the mechanical strength (gel strength) of which can be changed within wide limits by the respective composition of the corresponding casting solution.
  • alkali and alkaline earth metal ions such as Li+, Na+, K+, Mg2+, Ca2+, Sr2+ and Ba2+
  • B3+ and Al3+ and transition metal ions such as Zn2+, Cu2+ and Ni2+ gels
  • the solidification temperature of the casting solution which according to the invention is between 30 and 45 ° C., that is to say significantly higher than is typical for gelatin solutions (12 to 25 ° C.).
  • the solidification temperature After falling below the solidification temperature one finds - with sufficiently large metal ion concentration - already after gel times of up to about 5 seconds gel strengths, which can only be achieved with gelatin solutions, if at all, after considerably longer times (more than 10 seconds).
  • Gellan gum has proven to be a particularly advantageous polysaccharide for use in the layers according to the invention.
  • Gellan Gum is a polysaccharide known from the literature, which is obtained by aerobic biodegradation of a suitable fermentation medium using Pseudomonas elodea. The production and characterization of gellan gum and its use in the food industry are described, for example, in US 4,326,052, US 4,326,053, US 4,503,084, Carbohydrate Research, 124 (1983), pages 135 to 139, Food Technology, Vol. 37, April 1983, pages 63 to 70 or Gum and Stabilizers for the Food Industry, 2 (1984), pages 201 to 210. There are no references to photographic use in these publications.
  • Another suitable polysaccharide is the fermentation product referred to as XM-6 in US-A-4,638,059.
  • the preparation and properties of this polysaccharide are mentioned in this patent. However, there are no indications of a photographic application.
  • the polysaccharide is preferably used in the form of aqueous solutions.
  • concentrations of these solutions are preferably 0.05 to 2.0, in particular 0.1 to 1.0 percent by weight.
  • Solidification rate, solidification temperature and remelting temperature are caused by ions of mono-, di- and / or trivalent metals such as Li+, Na+, K+, Mg2+, Ca2+, Ba2+, Sr2+, B3+, Al3+, Zn2+, Cu2+ and Ni2+ controllable in a wide range.
  • 2 to 40 mmol of monovalent metal salts or 0.05 to 5 mmol of divalent or 0.02 to 0.2 mmol of trivalent metal salts can be added per 100 g of aqueous solution.
  • polysaccharide instead of the polysaccharide alone, its mixtures with gelatin can optionally also be used in the production of photographic layers.
  • Polysaccharide and gelatin are then preferably present in a weight ratio of 2: 1 to 1: 150, in particular 2: 1 to 1:70 and especially 1: 2 to 1:50.
  • the solidification and remelting temperature of such solutions depend on the concentration of gelatin, polysaccharide and the concentration and type of metal ions added.
  • the additives known from the prior art such as, for example, the wetting agents known from Research Disclosure, December 1978, 17643, XI, can also be added to the casting solutions.
  • the layers that can be produced with these casting solutions can have a very small dry layer thickness. Layers with dry layer thicknesses of 0.05 to 2, especially 0.05 to 1.00 ⁇ m are of great importance in many cases. Such layers are particularly suitable as underlayers in photographic materials, preferably silver color bleaching materials. Gellan Gum has proven particularly useful for use in the underlayers of silver color bleaching materials.
  • Casting solutions with a gelatin concentration of 0 to 1.5 percent by weight are suitable for the production of layers with very low dry layer thicknesses. As can be seen from example 4, they form gels with remarkably high strength very quickly, whereas corresponding solutions without polysaccharide do not gel even after a very long waiting time and are therefore unusable.
  • the polysaccharides which can be used according to the invention also enable the production of casting solutions which solidify immediately after contact with an uncoated or already coated support.
  • the mixing temperature that is currently set when the warm casting solution is applied to the cold carrier must be below the solidification temperature of the casting solution.
  • the casting solution must have the ability to solidify very quickly.
  • the mixing temperature is determined by the initial temperature and heat capacity of the optionally precoated film carrier as well as the initial temperature, application amount and specific heat of the casting solution. If, for example, one chooses 20 to 25 ° C for the initial temperature of the film carrier and 40 ° C for that of the casting solution, the mixing temperatures under the conditions of multiple cascade casting, for example, are between 27 and 35 ° C.
  • the solidification temperature of the casting solution should therefore be brought in the range of 28 to 38 ° C, for example by metal ions.
  • the application quantity can be increased without increasing the mixing temperature.
  • Corresponding casting solutions preferably contain mixtures of polysaccharide and gelatin.
  • the swelling factor which is about 8 to 10 without curing, can be reduced to values of 2 to 4 by reaction with the hardening agents customary in photography, which are summarized, for example, in Research Disclosure, December 1978, 17643, X.
  • the layers according to the invention in an uncured or partially cured state can also contribute to increasing the swelling volume of the material.
  • photographic material according to the present invention contains at least one light-sensitive layer which has one of the polysaccharides mentioned on a support.
  • Other light-sensitive layers and also auxiliary layers can also contain a polysaccharide.
  • Materials which contain said polysaccharide only in auxiliary layers are also photographic materials according to the present invention.
  • photographic material can be understood to mean all customary photographic materials, e.g. Chromogen materials, color diffusion transfer materials and especially silver color bleaching materials.
  • Preferred photographic material according to the present invention is silver color bleaching material which contains on a support at least one light-sensitive layer, at least one layer containing a bleachable image dye and at least one layer according to the invention as an auxiliary layer or at least one light-sensitive layer containing a bleachable image dye and at least one layer according to the invention as an auxiliary layer .
  • the auxiliary layer is preferably an underlayer.
  • the rate of solidification and gel strength 500 ⁇ l of the solution to be tested are placed in the measuring cuvette (2) of 2 x 2 cm2, which is made of brass and can be tempered by means of PELTIER cooling or heating (1).
  • the temperature of the 1250 ⁇ m thick solution layer is measured with a calibrated thermocouple.
  • the target temperature is lowered from its initial value (40 or 45 ° C) to the desired final value (usually 7.5 ° C).
  • the limit temperature at which the position d begins to deviate from zero, at which the gelling process begins can be determined by systematically changing the respectively set temperature.
  • Example 1 Production of a sub-layer made of Gellan gum with a dry layer thickness of 0.12 ⁇ m
  • a photographic material for the silver color bleaching process the following layers are applied to a polyethylene-coated paper support: an underlayer containing 0.12 g GELRITE and 30 mg magnesium sulfate per m2, a red-sensitive layer containing 1.20 g gelatin and 0.30 g silver per m2 as a silver bromoiodide emulsion with 2.6 mol% iodide and 140 mg of the cyan dye of the formula contains an intermediate gelatin layer of 1.5 g / m2 gelatin, a green-sensitive layer containing 2.00 g of gelatin, 0.27 g of silver as a silver bromoiodide emulsion with 2.6 mol% of iodide and 162 mg of the magenta dye of the formula per m2 contains a filter yellow layer of 0.04 g / m2 of colloidal silver and 0.054 g / m2 of the yellow dye of the formula a blue-sensitive layer which contains 0.90 g of gelatin, 0.22 g
  • the material also contains 100 mg / m2 of the gelatin hardener 2,4-dichloro-6-hydroxytriazine.
  • the material is exposed in the usual way behind a step wedge and processed as follows: Development 1.5 minutes Soak 0.5 minutes Silver and color bleaching for 1.5 minutes Soak 0.5 minutes Fixation for 1.5 minutes Soak 3.0 minutes Drying The temperature of the corresponding baths is 30 ° C.
  • the developer bath contains the following components per liter of solution: Sodium sulfite 3.0 g Potassium sulfite 19.9 g Lithium sulfite 0.6 g 1-phenyl-3-pyrazolidinone 1.0 g Hydroquinone 12.0 g potassium carbonate 29.1 g Potassium bromide 1.5 g Benzotriazole 0.5 g Ethylenediaminetetraacetic acid (sodium salt) 4.0 g
  • the color bleaching bath has the following composition per liter of solution: concentrated sulfuric acid 56.3 g m-nitrobenzenesulfonic acid (sodium salt) 6.0 g Potassium iodide 8.0 g Hydroxyethylpyridinium chloride 2.4 g 2,3-dimethylquinoxaline 2.5 g 4-mercaptobutyric acid 1.8 g
  • the fixer contains per liter of solution: Ammonium thiosulfate 200 g Ammonium bisulfite 12 g Ammonium sulfite 39 g
  • Example 2 Production of an underlayer from a mixture of Gellan gum and gelatin with a dry layer thickness of 1.00 ⁇ m.
  • a photographic element according to Example 1 is produced, but which contains an underlayer of 0.88 g / m2 gelatin, 0.12 g / m2 GELRITE and 30 mg / m2 magnesium sulfate.
  • Example 1 The material is exposed and processed as indicated in Example 1. Images similar to those in Example 1 are obtained.
  • Example 3 Solidification properties of additive-free gelatin solutions (comparative example ).
  • the setting time, the setting temperature and the maximum gel strength of aqueous solutions of a commercially available bone gelatin are measured at pH 5.7 and concentrations between 1 and 6% using the apparatus described in FIG. 1. The results are summarized in Table 1.
  • T rem Typical values for T rem are between 8 and 23 ° C.
  • Example 4 Casting solutions according to the invention for producing thin sublayers, the casting solutions containing gellan gum.
  • Example 2 The values in Table 2 show that all solutions achieve a gel strength that can only be obtained in Example 3 at higher gelatin concentrations.
  • the solidification temperatures are between 30 and 40 ° C depending on the salt and concentration of this salt. In spite of the low concentration of gellan gum, the setting times are less than three, sometimes even less than one second.
  • the gels formed from the above solutions no longer melt below 45 ° C.
  • Table 3 show that all solutions achieve a gel strength that is only obtained in Example 3 at gelatin concentrations of over 3.5%.
  • the solidification temperatures are between 30 and 40 ° C depending on the salt and concentration of this salt. In spite of the low concentration of gellan gum, the setting times are less than three, sometimes even less than one second.
  • the gels formed from the above solutions no longer melt below 45 ° C.
  • the lower layer is completely omitted.
  • the red-sensitive layer contains 1.20 g gelatin and 0.30 g silver per m2 as a silver bromoiodide emulsion with 2.6 mol% iodide and 153 mg of the cyan dye of the formula
  • the intermediate gelatin layer consists of 1.5 g / m2 gelatin,
  • the green-sensitive layer contains 2.00 g of gelatin, 0.27 g of silver as a silver bromoiodide emulsion with 2.6 mol% iodide and 186 mg of the magenta dye of the formula per m2
  • the filter yellow layer contains 0.04 g / m2 of colloidal silver and 0.059 g / m2 of the yellow dye of the formula
  • the blue-sensitive layer contains 0.90 g of gelatin, 0.22 g of silver as a silver bromoiodide emulsion with 2.6 mol% of iodide and 87 mg of the dye of the formula (105) per m2.
  • the protective gelatin layer consists of 0.8 g / m2 gelatin.
  • the material also contains in the lower layer 19 (variants a and c) or 29 mg / m2 (variant b), in the remaining layers a total of 100 mg / m2 of the gelatin hardener 2,4-dichloro-6-hydroxytriazine (potassium salt).
  • the pH of the solution is consistently 6.5.
  • the casting solutions poured at 45 ° C have a viscosity of 5.6 (variants a and c) and 7.4 mPa ⁇ s (variant b) at 40 ° C; the solidification temperature for variants a and b is 34.5 ° C, for variant c 31.5 ° C.
  • Variants a to c give mottle marks between 2.5 and 3.5 (weak mottle), reference sample d a mottle note of 5.5 (very strong mottle), see Table 4.
  • Example 7 Use of Gellan Gum in combination with a gelatin hardener.
  • the thickness of the dry layer and then the layer thickness of the layer swollen with water are first measured on microscopic thin layers.
  • the resulting swelling factors are given in Table 5.
  • the swelling reduced by the hardening agent is clearly visible.
  • Example 8 Highly concentrated casting solutions with modified solidification properties suitable for auxiliary layers.
  • the solidification temperature T E can, as shown in FIG. 2 using the example of Gellan Gum, be shifted between 23 and 45 ° C. in the solutions according to the invention by appropriately selecting the cation concentration (variants a and b).
  • the solutions solidify quickly, with sufficient polysaccharide and salt contents within one second. This also applies if the hypothermia only reaches 4 ° C, i.e. the final temperature remains well above the range typical for pure gelatin solutions (10-24 ° C).
  • t0 is the time required to cool the sample to the solidification temperature T E.
  • the gel strength achieved with only slight hypothermia remains well below the max. achievable value. However, it still corresponds to the gel strength of a 3% gelatin solution kept at 7 ° C. for 30 seconds.
  • Example 9 Emulsion-containing casting solutions with modified solidification properties.
  • 100 g of a blue-sensitive, pH 6.5 solution contain 5.55% gelatin, 0.98 g silver as silver bromide emulsion, 2.3 g yellow coupler, which is introduced as an oil emulsion with the composition described below, 0.30 g gellan gum and 2.7 mmol potassium nitrate.
  • 100 g of a solution set to pH 6.0 contain 6.4 g gelatin, 1.87 g silver as chlorobromide emulsion, 0.30 g gellan gum and 60 mg barium nitrate and 100 mg 2,4-dichloro-6-hydroxytriazine (potassium salt) .
  • the solutions mentioned are examined according to the method described at the beginning with regard to solidification behavior.
  • the polysaccharide additive according to the invention brings about an increase in the solidification temperature in all cases and, in addition, a marked reduction in the solidification time.
  • a comparison of the solidification behavior of the casting solutions a and b according to the invention with that of the corresponding additive-free solutions (not according to the invention) reveals:
  • the solidification temperatures rise, depending on the Gellan-Gum content, from 16 to 17 ° C. to values between 38 and 42 ° C.
  • the cooling times are reduced from around 18 to 2 to 4 seconds.
  • the setting times decrease from 7 (solution a) or 8 seconds (solution b) to less than 1 second.
  • Example 10 Mottle reduction by using rapidly solidifying casting solutions.
  • the solidification temperature of the two casting solutions b according to the invention is 39.5 ° C .; all other solutions only solidify at temperatures of 20 to 25 ° C.
  • the uncoated carrier has an initial temperature of 23 ° C and a - calorimetrically determined - heat capacity of 75 cal / m2 ⁇ ° C.
  • the total amount of casting solution applied via cascade casting is 90 g / m2. Its initial temperature is 45 ° C, its heat capacity is 90 cal / m2 ⁇ ° C.
  • the two material variants are exposed homogeneously in the green spectral range and then subjected to the processing process described in Example 6. An average color density of about 0.7 density units is obtained. A strong magenta mottle can be seen in variant a; in variant b this mottle is only weakly pronounced.
  • Example 11 Photographic behavior of layers according to the invention
  • the casting solutions a, b and d from Example 9, together with a suitable protective layer casting solution, are poured onto a white opal carrier.
  • 100 g of the protective layer casting solution contain 3.7 g of gelatin and 119 mg of the potassium salt of 2,4-dichloro-6-hydroxytriazine.
  • Their pH is 6.5 and their area coverage is 40 g / m2.
  • the application quantities for the dye-containing casting solutions are 50 (cyan), 22 (yellow) and 40 g / m2 (magenta).
  • the materials produced in this way are exposed behind a step wedge in the red (cyan), blue (yellow) or green spectral range (magenta), processed according to Example 6 and then measured sensitometrically.
  • the resulting color density curves show no difference between the comparison layers and the layers according to the invention with added polysaccharide.

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  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Heat Sensitive Colour Forming Recording (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
EP88810007A 1987-01-13 1988-01-07 Layers for photographic materials Withdrawn EP0275234A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH97/87 1987-01-13
CH9787 1987-01-13

Publications (2)

Publication Number Publication Date
EP0275234A2 true EP0275234A2 (fr) 1988-07-20
EP0275234A3 EP0275234A3 (en) 1989-07-26

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EP88810007A Withdrawn EP0275234A3 (en) 1987-01-13 1988-01-07 Layers for photographic materials

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US (1) US4898810A (fr)
EP (1) EP0275234A3 (fr)
JP (1) JPH01221736A (fr)

Cited By (1)

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EP0345885A2 (fr) * 1988-06-09 1989-12-13 Monsanto Company Mélanges de gomme de gellane et de gélatine

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US5426019A (en) * 1993-12-30 1995-06-20 Eastman Kodak Company Color photographic element
US5451497A (en) * 1993-12-30 1995-09-19 Eastman Kodak Company Photographic dispersion having improved stability
US5580712A (en) * 1995-02-03 1996-12-03 Eastman Kodak Company Silver halide emulsions, elements and methods of making same using synthetic biopolymer peptizers
JP4092213B2 (ja) * 2003-01-06 2008-05-28 富士フイルム株式会社 熱現像感光材料
US20070184215A1 (en) * 2006-02-07 2007-08-09 Eastman Kodak Company Material for forming images by inkjet printing
US20070184216A1 (en) * 2006-02-07 2007-08-09 Eastman Kodak Company Gels of polysaccharide, fluorinated surfactant and particles
US20070196595A1 (en) * 2006-02-07 2007-08-23 Eastman Kodak Company Polysaccharide materials with hydroxylated polymers in ink receiving media
US8075963B2 (en) * 2006-02-07 2011-12-13 Eastman Kodak Company Material for forming images by inkjet printing
US20070184209A1 (en) * 2006-02-07 2007-08-09 Eastman Kodak Company Coating method of material for inkjet printing

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EP0345885A3 (en) * 1988-06-09 1990-10-03 Merck & Co. Inc. Gellan gum/gelatin blends

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EP0275234A3 (en) 1989-07-26
JPH01221736A (ja) 1989-09-05

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