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
  • G03C7/30—Colour processes using colour-coupling substances; Materials therefor; Preparing or processing such materials
  • G03C7/392—Additives
  • G03C7/39208—Organic compounds
• • 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
  • G03C7/30—Colour processes using colour-coupling substances; Materials therefor; Preparing or processing such materials
  • G03C7/392—Additives
  • G03C7/39208—Organic compounds
  • G03C7/39232—Organic compounds with an oxygen-containing function
• • 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
  • G03C7/30—Colour processes using colour-coupling substances; Materials therefor; Preparing or processing such materials
  • G03C7/392—Additives
  • G03C7/39208—Organic compounds
  • G03C7/39236—Organic compounds with a function having at least two elements among nitrogen, sulfur or oxygen
• • 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
  • G03C7/30—Colour processes using colour-coupling substances; Materials therefor; Preparing or processing such materials
  • G03C7/392—Additives
  • G03C7/39208—Organic compounds
  • G03C7/3924—Heterocyclic
  • G03C7/39244—Heterocyclic the nucleus containing only nitrogen as hetero atoms
  • G03C7/39248—Heterocyclic the nucleus containing only nitrogen as hetero atoms one nitrogen atom
• • 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
  • G03C7/30—Colour processes using colour-coupling substances; Materials therefor; Preparing or processing such materials
  • G03C7/392—Additives
  • G03C7/39208—Organic compounds
  • G03C7/3924—Heterocyclic
  • G03C7/39244—Heterocyclic the nucleus containing only nitrogen as hetero atoms
  • G03C7/39252—Heterocyclic the nucleus containing only nitrogen as hetero atoms two nitrogen atoms
• • 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
  • G03C7/30—Colour processes using colour-coupling substances; Materials therefor; Preparing or processing such materials
  • G03C7/392—Additives
  • G03C7/39208—Organic compounds
  • G03C7/3924—Heterocyclic
  • G03C7/39244—Heterocyclic the nucleus containing only nitrogen as hetero atoms
  • G03C7/39256—Heterocyclic the nucleus containing only nitrogen as hetero atoms three nitrogen atoms
• • 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
  • G03C7/30—Colour processes using colour-coupling substances; Materials therefor; Preparing or processing such materials
  • G03C7/392—Additives
  • G03C7/39208—Organic compounds
  • G03C7/3924—Heterocyclic
  • G03C7/39268—Heterocyclic the nucleus containing only oxygen as hetero atoms
• • 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
  • G03C7/30—Colour processes using colour-coupling substances; Materials therefor; Preparing or processing such materials
  • G03C7/392—Additives
  • G03C7/39208—Organic compounds
  • G03C7/3924—Heterocyclic
  • G03C7/39272—Heterocyclic the nucleus containing nitrogen and oxygen

Definitions

• the filter layer becomes.
• a colored layer is installed, which is then called the filter layer becomes.
• the filter layer usually a yellow one Filter layer between the blue sensitive layer and the one below green sensitive and red sensitive layers arranged to the blue light to keep away from the green or red sensitive layers.
• the dyes must not have any adverse effects on the quality of the exercise photographic silver halide emulsion; they can therefore e.g. not the Press sensitivity or cause fog.
• the Dyes in the material may be resistant to diffusion, but must be used during processing of the material completely and irreversibly discolored or washed out of the layer be so that no unwanted staining on the exposed and developed photographic material remains.
• the dyes be stable in storage and not change in the photographic material lead during storage.
• DE 196 46 402 includes condensation products of 3-alkylisoxazolones p-N, N-bis-carbalkoxymethylaminobenzaldehydes or N-carbalkoxyethylcarbazole-3-aldehydes (Arylidene dyes) are known to have suitable absorption as yellow filter dyes exhibit and are completely decolorized in the layer during development.
• Arylidene dyes are known to have suitable absorption as yellow filter dyes exhibit and are completely decolorized in the layer during development.
• the object of the present invention is a color photographic recording material, containing a decolourable yellow filter layer, with improved To provide storage stability.
• polyester-based materials should be improved in terms of storage stability. At the same time, it should be a good one Color separation from blue-green can be achieved.
• the yellow filter dyes known in the art in particular those from the DE 196 46 402 known dyes can be achieved by at least one Layer between the base and the photosensitive closest to the base Layer a compound of formula (I) is added. This allowed a stable green sensitivity can be achieved with normal storage. At the same time it was also possible to improve the latent image stability.
• the compound of formula (I) is used in an amount of 0.01 to 10 mmol / m 2 , preferably 0.1 to 2 mmol / m 2 .
• the compound of formula (I) is used in an amount of 0.01 to 10 mmol / m 2 , preferably 0.1 to 2 mmol / m 2 .
• only one compound and also a mixture of different compounds of the formula (I) can be used.
• Electron- withdrawing groups within the meaning of the present invention are, for example, R'CO-, R'R'NCO-, NC-, R'SO 2 - R'OCO-, R'R''NSO 2 in a preferred embodiment according to formula (Ia ) (in the following, the formula (Ia) should also be understood to mean the tautomeric form according to formula (Ib))
• X is -RCO and Y is an electron-withdrawing group R 'and R''can independently of one another be the radicals mentioned above Represent R.
• Further groups preferred in the sense of the present application are described in March, Advanced Organic Chemistry, 3rd Ed., P.17 and p. 238.
• R and Y form according to formula Ia or Ib together a group to complete a 5 or 6 ring.
• Ring systems preferably formed are, for example Pyrazolones, isoxazolones and pyrazolidinediones.
• Alkyl in the sense of the present application means linear or branched, cyclic or straight-chain, substituted or unsubstituted hydrocarbons.
• these are alkyl groups with 1 to 12 carbon atoms, such as, for example, methyl, ethyl, propyl, isopropyl, butyl, t-butyl, neopentyl and 2-ethylhexyl groups.
• these can be further substituted, particularly preferably with a carboxycarbonyl group.
• Aryl in the sense of the present application is to be understood as meaning aromatic hydrocarbon groups, which are preferably 5- to 6-membered ring systems, which may be monocyclic but also as condensed ring systems. It can be both substituted and unsubstituted ring systems.
• aryl should also be understood to mean hetaryls. These are aromatic systems which contain at least one heteroatom. These are also preferably 5- and 6-membered ring systems, which can be monocyclic but also as condensed ring systems. It can be both substituted and unsubstituted ring systems. N, S and O are particularly suitable as heteroatoms.
• a ring system can preferably have between 1 and 3 heteroatoms, which can be the same or different heteroatoms. In the case of the condensed ring systems, several identical or different heterocyclic systems can be condensed, as can hetaryls with aryls.
• Aryloxy in the sense of the present application is to be understood as the groups which are already defined under aryl and are bonded to the rest via an oxygen atom.
• Alkoxy in the sense of the present application is understood to mean the groups already defined under alkyl which are bonded to the rest via an oxygen atom.
• alkylamino is to be understood as the groups which are already defined under alkyl and are bonded to the remainder via an amino group.
• Arylamino in the sense of the present application are to be understood as the groups already defined under aryl by an amino group attached to the rest.
• Typical compounds of the formula (I) which can preferably be used according to the invention are the compounds A listed below:
• radicals R 1 , R 2 , R 3 and R 4 each independently represent an alkyl group, an aryl group, a hetrocyclic group or an alkenyl group.
• the radicals R 5 , R 6 and R 7 also each independently represent a hydrogen atom or a substituent.
• substituents in the sense of the application are alkyl groups with 1 to 40 carbon atoms, such as, for example, methyl, ethyl, propyl, isopropyl, butyl, tertiary butyl, hexyl, octyl, 2-hydroxyethyl groups, furthermore alkoxy groups with 1 to 40 C atoms such as methoxy, ethoxy or butoxy, and a halogen atom, for example only chlorine, bromine or fluorine, furthermore a mono- or dialkylamine group with a total of 1 to 20 carbon atoms in the alkyl groups, where the alkyl groups can be substituted, such as dimethylamino, diethylamino , Cyanoethylamino, an ester group with 2 to 20 carbon atoms such as methoxycarbonyl, ethoxycarbonyl, phenoxycarbonyl, an amido group such as acetylamino, benzamin
• the alkyl group represented by R 1 , R 2 , R 3 and R 4 can be an alkyl group having 1 to 20 carbon atoms, such as methyl, ethyl, benzyl, phenethyl, propyl, butyl, isobutyl, pentyl, hexyl, octyl or nonyl, which can optionally carry substituents, these can be the substituents already mentioned.
• the radicals R 1 , R 2 , R 3 and R 4 can preferably represent an aryl group having 6 to 10 carbon atoms, such as phenyl or naphthyl, which can also be substituted by the substituents already mentioned.
• a heterocyclic group represented by R 1 , R 2 , R 3 or R 4 can preferably be a 5- or 6-membered ring, for example an oxazole ring, benzoxazole ring, thiazole ring, imidazole ring, pyridine ring, furan ring, thiophene ring, sulforane ring, Pyrazole ring, pyrrole ring, chroman ring or coumarin ring can act, which can also be substituted with the previously mentioned substituents.
• R 1 , R 2 , R 3 or R 4 can preferably represent an alkenyl group having 2 to 10 carbon atoms, such as vinyl, allyl, 1-propenyl, 2-pentenyl, or 1,3-butadienyl.
• 2 of the substituents R 1 to R 7 can be bonded to one another and thereby form a ring system. It is preferably a 5- or 6-membered ring system, such as a pyrrolidine ring, a piperidine ring, a morpholine ring or a benzene ring.
• Particularly preferred compounds are:
• the compounds of formula (I) can preferably at least in any light-insensitive layer between the base and the Contain the support closest to the photosensitive emulsion layer his.
• the compounds of the formula (I) can be used to form an existing one Layer can be added as well as in a separate layer in the material be introduced. When it is introduced in the form of a separate layer usually around a layer consisting of a hydrophilic colloid, preferably Gelatin. The introduction can, for example, in high-boiling organic solvents take place as a finely divided solid dispersion or as a loaded latex processes known from the prior art.
• the compounds are according to the invention of the formula (I) contained in at least one layer. It is located preferably directly on the surface.
• At least one layer means in the sense of present application that the compounds of formula (I) also in several Layers, maximum all layers between the base and the base on next located light-sensitive layer, as well as possibly in additional existing layers can be included.
• the compounds are added to two or three layers.
• the Connections are a layer that is preferably directly on the base is located below the layer structure and / or a layer that is further from the base is added as any light-sensitive layer and / or a layer added is on the back of the pad.
• the photographic recording materials consist of a support on which at least one photosensitive silver halide emulsion layer is applied. Thin films and foils are particularly suitable as supports.
• An overview of Backing materials and auxiliary layers applied to their front and back is presented in Research Disclosure 37254, Part 1 (1995), p. 285.
• Various Polyester bases are in EP 0 601 501 A1 and US 5,719,015 described. Cellulose triacetate is preferred in the context of the present invention and in particular polyester used. Polyester in the sense of the present Invention are, for example, in EP 0 601 501.A1 and US 5,719,015 described, particularly preferred are polyethylene glycol 2,6-naphthalate (PEN) and Polyethylene glycol terephthalate (PET).
• PEN polyethylene glycol 2,6-naphthalate
• PET Polyethylene glycol terephthalate
• color photographic recording materials are color negative films and Color positive films.
• An overview of typical color photographic recording materials as well as preferred embodiments and processing processes can be found in Research Disclosure 37038 (February 1995).
• the color photographic recording materials usually contain at least one red sensitive, one green sensitive and one blue sensitive silver halide emulsion layer and optionally intermediate layers and protective layers.
• Color photographic films such as color negative films indicate in the below Order on the carrier 2 or 3 red-sensitive, cyan-green domes Silver halide emulsion layers, 2 or 3 green sensitive, magenta coupling silver halide emulsion layers and 2 or 3 blue-sensitive, yellow-coupling silver halide emulsion layers on.
• the layers of the same spectral sensitivity differ in their photographic sensitivity, the less sensitive sub-layers are usually arranged closer to the carrier than that higher sensitive sub-layers.
• 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 combined into another layer package in a photographic film be 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.
• Photographic copying materials contain either silver chloride bromide emulsions with up to 80 mol% of AgBr or silver chloride bromide emulsions over 95 mol% AgCl.
• the emulsions used are in a preferred embodiment, around tab grain emulsions.
• Underneath are to be understood as emulsions with silver halide crystals, which have a tabular Have habit with an aspect ratio> 2, the aspect ratio being Ratio of the diameter of the circle of the same area of the projection area to the Thickness of the crystal is.
• the photographic emulsions can be made using methine dyes or other dyes are spectrally sensitized.
• Particularly suitable dyes are cyanine dyes, merocyanine dyes, and complex merocyanine dyes.
• Such compounds, especially merocyanines, can also be used as Stabilizers are used.
• Pentamethine cyanines with naphthothiazole, naphthoxazole or benzothiazole as basic end groups can also be used as red sensitizers, which can be substituted by halogen, methyl or methoxy groups and bridged by 9,11-alkylene, in particular 9,11-neopentylene, as in GB 604 217 and BE 660 948.
• the N, N'-substituents can also be C 4 -C 8 alkyl groups as described in EP 0 532 042.
• the methine chain can additionally carry substituents as mentioned in EP 0 532 042.
• Pentamethines with only one methyl group on the cyclohexene ring can also be used, as described in EP 0 532 042.
• the red sensitizer can be supersensitized and stabilized by adding heterocyclic mercapto compounds.
• the red-sensitive layer can additionally between 390 and 590 nm, preferably at 500 nm be spectrally sensitized in order to improve the differentiation of the To cause red tones according to EP 0 304 297, US 806 460 and US 5 084 374.
• Such compounds in particular merocyanines, can also be used as stabilizers be used.
• the spectral sensitizers can be in dissolved form or as a disperse of the photographic Emulsion can be added. Both solution and dispersate can be additives such as wetting agents, dispersants or buffers.
• the spectral sensitizer or a combination of spectral sensitizers can before, during or after the emulsion preparation.
• 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.
• Color photographic films are used to improve sensitivity, graininess, Sharpness and color separation are often used in the compounds in the reaction with the developer oxidation product release compounds that are photographically effective are, e.g. DIR couplers that release a development inhibitor.
• the color photographic recording material according to the invention can also be compounds contain, for example, a development inhibitor, a development accelerator, a bleach accelerator, a developer, a silver halide solvent, set an antifoggant or antifoggant free can, for example so-called DIR hydroquinones or other compounds, as for example in US-A 4,636,546, US-A 4,345,024, US-A 4,684,604 and in DE-A 24 47 079, DE-A 25 15 213 and DE-A 31 45 640 or in EP-A 198 438 are described. These connections perform the same function as DIR, DAR or FAR couplers, except that they do not form coupling products.
• High molecular weight color couplers are described, for example, in DE-C 1 297 417, DE-A 24 07 569, DE-A 31 48 125, DE-A 32 17 200, DE-A 33 20 079, DE-A 33 24 932, DE-A 33 31 743, DE-A 33 40 376, EP-A 27 284 and US-A 4 080 211.
• the high molecular color couplers are usually polymerized by produced ethylenically unsaturated color coupler monomers. But you can too can be obtained by polyaddition or polycondensation.
• the incorporation of the color couplers in silver halide emulsion layers can be done in the Way that first of the compound in question a solution or Dispersion prepared and then added to the casting solution for the layer in question becomes.
• the choice of the appropriate solvent or dispersant depends on the Solubility of the compound.
• the mostly hydrophobic color coupler, but also other hydrophobic components of the Layers are usually dissolved in high-boiling organic solvents or dispersed. These solutions or dispersions are then in an aqueous Binder solution (usually gelatin solution) emulsified 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 compounds can also be in the form of so-called loaded latices Pouring solution are introduced. Reference is made, for example, to DE-A 25 41 230, DE-A25 41 274, DE-A 28 35 856, EP-A 0 014 921, EP-A 0 069 671, EP-A 0 130 115, US-A 4,291,113.
• the diffusion-resistant storage of anionic water-soluble Connections e.g. from couplers or dyes
• Suitable oil formers are e.g. Alkyl phthalates, phosphoric esters, phosphonic esters, Citric acid esters, lactic acid esters, benzoic acid esters, fatty acid esters, Amides, alcohols, phenols, sulfonamides, aniline derivatives and hydrocarbons.
• Yellow filter dyes are usually between the green sensitive and blue sensitive Layers applied, they prevent blue light from reaching into the one below to reach lying layers.
• all yellow filter dyes known from the prior art can be used. However, they are preferably compounds as disclosed in DE 196 46 402.
• the usually arranged between layers of different spectral sensitivity non-photosensitive intermediate layers can contain agents which an undesirable diffusion of developer oxidation products from a photosensitive in another light-sensitive layer with different spectral Prevent awareness.
• 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 recording material can also contain UV light-absorbing compounds, whiteners, spacers, other 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. that Binder used, preferably gelatin, is replaced by suitable chemical Process networked.
• Suitable hardener substances can be found in Research Disclosure 37254, Part 9 (1995), P. 294 and in Research Disclosure 37038, Part XII (1995), p. 86.
• a color photographic recording material for color negative color development was produced (layer structure 1) by applying the following layers in the order given to a transparent cellulose triacetate support. The quantities given relate to 1 m 2 .
• the corresponding amounts of AgNO 3 are given for the silver halide application; the silver halides were stabilized with 0.5 g of 4-hydroxy-6-methyl-1,3,3a, 7-tetraazaindene per mole of AgNO 3 .
• the total layer structure had a swelling factor ⁇ 3.5 after curing.
• the structures 2 to 13 differ from structure 1 as indicated in the table.
• the additional layer 1 a is located between the base and layer 1.
• the materials according to the invention show good ones Normal storage stability, good latent image stability, good decolorization of the Filter yellow dye (small Dmin gb) with good color separation blue-green.

Landscapes

• Physics & Mathematics (AREA)
• Spectroscopy & Molecular Physics (AREA)
• General Physics & Mathematics (AREA)
• Silver Salt Photography Or Processing Solution Therefor (AREA)
• Heat Sensitive Colour Forming Recording (AREA)

Applications Claiming Priority (2)

Publications (3)

Family

ID=7891941

Family Applications (1)

Country Status (4)

Citations (3)

Family Cites Families (4)

• 1998
  • 1998-12-21 DE DE19858999A patent/DE19858999A1/de not_active Withdrawn
• 1999
  • 1999-12-08 EP EP99124022A patent/EP1014183B1/fr not_active Expired - Lifetime
  • 1999-12-08 DE DE59907279T patent/DE59907279D1/de not_active Expired - Fee Related
  • 1999-12-14 US US09/461,476 patent/US6228568B1/en not_active Expired - Fee Related
  • 1999-12-14 JP JP11354658A patent/JP2000181035A/ja active Pending

Patent Citations (3)

Also Published As

Similar Documents

Legal Events