Hardening Ingredient Containing Patents (Class 430/621)
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Patent number: 5447817Abstract: To eliminate the "pi-line" artefact after processing a method of image formation in a silver halide industrial X-ray photographic material is disclosed wherein said material comprises on at least one side of a support, at least one gelatino silver halide emulsion layer and a total amount of silver halide, corresponding to from 6 to 20 g of silver nitrate per square meter and per side, and at least one non-sensitive protective antistress coating and wherein said method proceeds by the steps of exposing said material to direct X-rays and processing the material in an automatic processing machine by development, fixing, rinsing and drying, characterized in that said material further comprises at least one vinyl sulphone compound as a hardening agent in at least one of its hydrophilic layers, that development occurs in a developer comprising as a surfactant at least one anionic alkylphenoxy and/or alkoxy polyalkyleneoxy phosphate ester, sulphate ester, alkyl carboxylic, sulphonic or phosphonic acid and/or a saltType: GrantFiled: April 5, 1994Date of Patent: September 5, 1995Assignee: AGFA-Gevaert, N.V.Inventors: Raymond Florens, Pieter Perdieus, Peter Willems, Freddy Henderickx
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Patent number: 5445927Abstract: A photographic silver halide material for industrial radiography comprises a film support and on one or both sides thereof a silver halide emulsion rich in silver chloride and a silver halide emulsion rich in silver bromide either in admixture in the same layer or in contiguous layers. The ratio by weight of colloid binder, e.g. gelatin, to silver halide (expressed as silver nitrate) is from 3:10 to 6:10 and the amount of silver halide corresponds to from 6 g to 20 g of silver nitrate per square meter and per side. The material has been forehardened to an extent such that when it is immersed in demineralised water of 25.degree. C. for 3 minutes there is absorbed less than 2.5 g of water per gram of binder. The material can be processed within a total processing time of less than 5 minutes with a developer and fixer being substantially free from hardening agents and the fixer being substantially free from ammonium ions.Type: GrantFiled: April 14, 1994Date of Patent: August 29, 1995Assignee: Agfa-Gevaert, N.V.Inventors: Raymond Florens, Pieter Perdieus
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Patent number: 5441860Abstract: The present invention relates to a silver halide photographic material comprising a support having coated thereon at least one silver halide emulsion layer and at least one light-insensitive hydrophilic colloid layer wherein at least one of said layers comprises a gelatin hardening agent and said hydrophilic colloid layer comprises an alkali-insoluble acrylic polymer particles having an average particle size of from 0.5 to 6 .mu.m and wherein at least 95% by number of said polymer particles have a particle size within .+-.15% of the average particle size.Type: GrantFiled: February 28, 1994Date of Patent: August 15, 1995Assignee: Minnesota Mining and Manufacturing CompanyInventors: Brunella Fornasari, Giuseppe Bussi, Renzo Torterolo
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Patent number: 5439791Abstract: New types of modified gelatins are disclosed, modified at part of the free carboxyl groups of the polypeptide chain, by the introduction of a new end-standing amino, sulphinic acid or thiol group. The modified gelatins show an enhanced reactivity towards vinylsulphonyl hardeners. The invention further includes hardened modified gelatin types and hydrophilic elements containing them. In particular, a differentially hardened multilayer element, preferably a photographic element, is disclosed.Type: GrantFiled: February 10, 1994Date of Patent: August 8, 1995Assignee: Agfa-Gevaert, N.V.Inventors: Piet Kok, Jean-Marie Dewanckele, Johan Loccufier, Eddy Michiels, Frank Michiels
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Patent number: 5436123Abstract: A silver halide photographic light-sensitive material comprises a support and provided thereon, a hydrophilic colloid layer comprising a silver halide emulsion layer, wherein said support has a thickness of 70 to 120 .mu.m and Young's modulus of not less than 550 kg/mm.sup.2 and said hydrophilic colloid layer has a degree of swelling of not more than 80%, said degree of swelling being obtained by the following equation:Degree of swelling=(B-A).times.100 Awherein A represents a dry thickness .mu.m of the hydrophilic colloid layer and B represents a thickness .mu.m of the hydrophilic colloid layer after the material was immersed for 15 minutes at 35.degree. C. in developer (b).Type: GrantFiled: June 20, 1994Date of Patent: July 25, 1995Assignee: Konica CorporationInventor: Akiko Suzuki
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Patent number: 5422235Abstract: In a photographic paper production method, a photographic paper support is coated with one or more photographic silver halide emulsion layers and one or more other hydrophilic colloid layers, at least one of the layers including a hardener. The coated support is then dried and conditioned to a temperature of from 24.degree. C. to 33.degree. C. The photographic and other layers on the support are conditioned to an equilibrium relative humidity of from 55% to 70%. The coated support is then stored at the conditioned temperature until the photographic and other layers have achieved a predetermined hardness. The new photographic paper production method reduces the post-production storage time required for photographic paper to achieve an acceptable level of abrasion resistance.Type: GrantFiled: August 17, 1993Date of Patent: June 6, 1995Assignee: Eastman Kodak CompanyInventors: John W. Chapman, Andrew F. Sierakowski, Robyn A. Whittle
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Patent number: 5411856Abstract: Novel compounds represented by formula (I) ##STR1## wherein R.sub.1 and R.sub.2 represent hydrogen or alkyl, R.sub.3 represents hydrogen, alkyl, substituted alkyl or CONR.sub.1 R.sub.2, and n is 0 to 6, can be used to harden gelatin. The compounds are particularly useful for hardening gelatin of a photographic element.Type: GrantFiled: January 10, 1994Date of Patent: May 2, 1995Assignee: Eastman Kodak CompanyInventors: Edgar E. Riecke, Kenneth G. Harbison
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Patent number: 5397687Abstract: The preparation of x-ray materials, especially suitable for non-destructive testing applications, is described. The emulsion layers of said material are comprising silver halide emulsion grains containing at least 75 mole % of silver chloride and less than 25 mole % of silver bromide and are characterized by a ratio between the amount of gelatin and the amount of silver halide, being expressed as the equivalent amount of silver nitrate, of less than 0.6. Hardening of said material is performed in such a way that the amount of demineralized water of 25.degree. C. absorbed in 3 minutes is less than 2.5 g per gram of gelatin present in said material. A rapid processing system is available with a total processing time of less than 3 minutes with a developer and fixer being substantially free from hardening agents and the fixer being substantially free from ammonium ions.Type: GrantFiled: December 14, 1993Date of Patent: March 14, 1995Assignee: Agfa-Gevaert, N.V.Inventors: Peter Willems, Freddy Henderickx, Gino De Rycke, Romain Bollen
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Patent number: 5391477Abstract: A photographic element comprising a modified gelatin whereby the modification results in carbamoyl groups by forming peptide bonds using fast-acting hardener. The derivatization involves initial reaction with a carboxyl activator followed by addition of a substituted amine thereby forming an amide linkage on the polypeptide chain. The resulting gelatin and photographic elements comprising such gelatin have a decreased propensity for water absorption without the loss of sensitometric properties.Type: GrantFiled: December 22, 1993Date of Patent: February 21, 1995Assignee: E. I. du Pont de Nemours and CompanyInventor: Timothy D. Weatherill
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Patent number: 5370986Abstract: Polyhydroxyalkyl compounds and co-stabilizing agents are used to impart stabilizing or antifogging properties to photographic recording materials.Type: GrantFiled: November 3, 1992Date of Patent: December 6, 1994Assignee: Eastman Kodak CompanyInventors: Roger Lok, Arthur H. Herz
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Patent number: 5354648Abstract: A radiographic assembly comprising:a radiographic element which comprises a support and a front and back pair of silver halide emulsion layers coated on the opposite sides of the support, anda front and back pair of intensifying screens adjacent said front and back emulsion layers, respectively,wherein at least one of said silver halide emulsion layers shows a swelling index lower than 140% and a melting time of from 45 to 120 minutes, and the contrast difference between said pair of silver halide emulsion layers is at least 0.5,wherein the X-ray stimulated light emission difference between said pair of intensifying screens is at least 0.6 IogE, andwherein the average imagewise cross-over of said radiographic element is lower than 5% at optical density of from 0.5 to 1.75 and in the range of from 5 to 15% at optical density of from 1.75 to 3.25, said imagewise cross-over being measured according to the formula described in the specificaton.Type: GrantFiled: June 7, 1993Date of Patent: October 11, 1994Assignee: Minnesota Mining and Manufacturing CompanyInventors: Marco Bucci, Renzo Torterolo, Pierfiore Malfatto, Marco Beruto
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Patent number: 5336592Abstract: A silver halide photographic light-sensitive material is disclosed. The light-sensitive material comprises a support having thereon a photographic layer including a silver halide emulsion layer wherein the outermost surface of said photographic layer has a pH value of from 5.4 to 5.9 and said silver emulsion layer contains a compound represented by the following formula I; ##STR1## wherein R.sub.1 is an alkyl group, a cycloalkyl group or an aryl group; R.sub.2 is an alkyl group, a cycloalkyl group, an acyl group or an aryl group; R.sub.3 is a substituent, n is 0 or 1; X.sub.1 is a substituent capable of splitting off upon coupling reaction with the oxidation product of a color developing agent; and Y.sub.1 is an organic group. The light-sensitive material is excellent in stability during storage and gives stable photographic characteristics even when pH value of developer is varied.Type: GrantFiled: November 3, 1992Date of Patent: August 9, 1994Assignee: Konica CorporationInventors: Shigeo Chino, Takashi Kadowaki, Toyoki Nishijima
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Patent number: 5316902Abstract: Hydrophilic organic colloids such as collagen or gelatin are modified for use in photographic elements such as film or paper, or for use as reagents in automated dry chemical analyzers. The modification comprises reaction of some of the carboxy groups attached to the polypeptide with (i) a amide bond forming agent, e.g. 1-pyrrolidinylcarbonylpyridinium chloride, and (ii) a di- or triamine, such as piperazine, diethylenetriamine or ethylenediamine. Such modification enables that colloid to react faster with a gelatin hardener such as bis(vinylsulfonyl)methane (BVSM). When coated over an equal amount of unmodified gelatin, and both layers imbibed with BVSM, a modified gelatin layer showed an enzyme resistance greater than that of the unmodified gelatin. This demonstrates that the modified gelatin hardened preferentially.Type: GrantFiled: January 4, 1993Date of Patent: May 31, 1994Assignee: Eastman Kodak CompanyInventors: Donald P. Specht, Kenneth G. Harbison
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Patent number: 5312646Abstract: Photographic materials, such as films and papers, include a support and coatings on the support. The coatings often contain hardeners which cause gelation cross links in the binder in the coating. The extent to which the cross-links have formed at the time of processing of the film or paper affects the appearance of the image produced by processing. Conventionally the cross-links have been allowed to form with time in normal atmospheric conditions. According to the invention, the formation of the cross links is accelerated to substantial completion by a process including incubating the material at a temperature above the glass transition temperature of the coating and below the melting point of the coating in an atmosphere having a relative humidity which causes a moisture content of the coating of 0.1 to 0.25 for a period of time sufficient to substantially complete the hardening, that is, the formation of the cross-links.Type: GrantFiled: February 27, 1991Date of Patent: May 17, 1994Assignee: Eastman Kodak CompanyInventors: Eugene H. Barbee, Kathleen A. Bonsignore, Wilbur S. Gaugh, Christopher J. Klasner, Avonelle L. Leonard, Daniel G. Ocorr
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Patent number: 5312725Abstract: A silver halide color photographic light-sensitive material in roll form comprises a support, and provided thereon, a silver halide emulsion layer and, on the side of the support opposite the silver halide emulsion layer, a backing layer containing gelatin and a hardener, wherein the backing layer has a degree of swelling of 250% or less represented by the following equation:Degree of swelling=[(A-C)/(B-C)].times.100.Type: GrantFiled: April 1, 1993Date of Patent: May 17, 1994Assignee: Konica CorporationInventors: Hiromitsu Araki, Tohru Kobayashi, Eiichi Ueda
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Patent number: 5302501Abstract: A silver halide photographic material comprising a support having thereon at least one silver halide emulsion layer, wherein the swelling ratio of the entire hydrophilic colloid layers on the acid polymer-containing layer side of the support of the silver halide photographic material having a hydrophilic colloid layer containing at least one acid polymer (having a carboxyl group-containing monomer unit content of at least 15 mol % or an acid value of at least 1.5 meq/g) on at least one silver halide emulsion layer-coated side thereof is at least 200% in distilled water, said acid polymer being dissolved in water and added to said hydrophilic colloid layer, and the swollen thickness of the above entire hydrophilic colloid layers at the time of the completion of the rinsing stage is not more than 8 .mu.m when said silver halide photographic material is processed (the swelling ratio in distilled water is a value obtained by incubating the photographic material at 40.degree. C.Type: GrantFiled: October 26, 1992Date of Patent: April 12, 1994Assignee: Fuji Photo Film Co., Ltd.Inventors: Yutaka Tamura, Yasuyuki Takagi, Junichi Yamanouchi
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Patent number: 5290668Abstract: A silver halide color photographic material is disclosed comprising a support comprising a base material and a water resistant resin layer containing titanium dioxide particles in an amount of at least 14% by weight of the water resistant resin layer, said support having thereon at least one blue-sensitive silver halide emulsion layer, at least one green-sensitive silver halide emulsion layer, at least one red-sensitive silver halide emulsion layer on the same side of the support as the water resistant resin layer, said photographic material having an optical reflection density of at least 0.70 at 680 nm, said photographic material containing at least one compound represented by formula (I) or (II) and at least one compound represented by formula (III), the total layer thickness of the constituent photographic layers provided on the support after immersing in a color developing solution for at least 60 seconds is at least 1.Type: GrantFiled: March 24, 1993Date of Patent: March 1, 1994Assignee: Fuji Photo Film Co., Ltd.Inventor: Shigeaki Ohtani
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Patent number: 5264339Abstract: In a method for the manufacture of a recording material containing a coated and dried gelatin containing layer on a support, the improvement wherein such layer is coated from an aqueous coating composition containing:(1) hydrophilic colloid matter consisting of at least 90% by weight of gelatin,(2) not more than 5% by weight with respect to the total gelatin content of a thickening agent increasing the viscosity of said composition, and(3) a hardening agent for gelatin that reduces its water-solubility after coating, characterized in that said gelatin is a gelatin species which as a 10% by weight aqueous solution at 36.degree. C. and pH 6 has a viscosity of at least 35 Mpa.s at a shear rate of 1000 S.sup.-1 and shows a decrease in viscosity by at least 10 Mpa.s at a shear rate of 40,000 s.sup.-1, and as a 3% by weight aqueous solution at Ph 6 and after cooling for 30 seconds at a shearing rate of 208 s.sup.Type: GrantFiled: September 4, 1992Date of Patent: November 23, 1993Assignee: Agfa-Gevaert N.V.Inventors: Bernard H. Tavernier, Frank P. Michiels
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Patent number: 5254445Abstract: A method of manufacturing silver halide photographic light-sensitive material with little habitual curling is disclosed. The material, after being coated with a silver halide emulsion layer and antistatic layer on the polyester support, is rolled around a core with its emulsion side facing outside, and then heated at the temperature not less than 30.degree. C. After the heat-treatment, the material is cut and re-rolled on a commercial size core with its emulsion side facing inside.Type: GrantFiled: March 20, 1992Date of Patent: October 19, 1993Assignee: Konica CorporationInventors: Yasuhiko Takamuki, Takeshi Sampei
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Patent number: 5246824Abstract: Light-sensitive silver halide photographic elements are disclosed comprising a support and silver halide emulsion layer or layers, wherein at least one of said silver halide emulsion layers contains tabular silver halide grains having an average diameter:thickness ratio of at least 3:1 and highly deionized gelatin hardened with a compound of formula (CH.sub.2 .dbd.CH--SO.sub.2 --).sub.n --A, wherein A is an n-valent organic group containing at least one hydroxy group and n is 2,3 or 4.The light-sensitive materials can be advantageously used in high temperature processing in automatic processors which include transporting rollers and have good characteristics of resistance to pressure marking.Type: GrantFiled: January 22, 1992Date of Patent: September 21, 1993Assignee: Minnesota Mining and Manufacturing CompanyInventors: Gerolamno Delfino, Riccardo Gallesio
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Patent number: 5244772Abstract: The present invention features a negative-type, silver halide photographic emulsion containing hydrazides that has reduced scratch sensitivity (i.e., the emulsion will have a reduced tendency to develop black scratches on non-exposed areas). The emulsion will resist developing black scratches due to the introduction to the emulsion of hydroquinone and ascorbate. The stability of the emulsion is further enhanced by the addition of sodium formaldehyde bisulfite.Type: GrantFiled: December 6, 1991Date of Patent: September 14, 1993Assignee: Sun Chemical CorporationInventors: Allan P. Piechowski, Penny M. Mullen, John F. Pilot
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Patent number: 5236822Abstract: A method for hardening gelatin which comprises using as a hardening agent a compound represented by formula (I): ##STR1## wherein R.sub.1, when taken along, may be alkyl of 1 to 20 carbon atoms, aralkyl of from 7 to 20 carbon atoms, aryl of from 6 to 20 carbon atoms, and alkenyl of from 2 to 20 carbon atoms. R.sub.1 and R.sub.2 can also combine with each other to form a heterocyclic ring of 5 to 8 atoms. The R.sub.1 -R.sub.2 ring contains the nitrogen atoms to which R.sub.1 and R.sub.2 are attached, and may also contain an additional nitrogen atom. R.sub.2 and R.sub.3 can combine to form either a 5 or 6 membered ring. The R.sub.2 -R.sub.3 ring contains the nitrogen atom to which R.sub.2 is attached, and may also contain one or two additional nitrogen atoms. R.sub.4 may be hydrogen or alkyl of 1 to 4 carbon atoms. R.sub.Type: GrantFiled: October 3, 1991Date of Patent: August 17, 1993Assignee: Eastman Kodak CompanyInventors: Edgar E. Riecke, Derek D. Chapman, Chung Y. Chen, Kenneth G. Harbison
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Patent number: 5229260Abstract: A photographic material comprising a light sensitive silver halide emulsion layer and an antistatic layer is disclosed., wherein at least one of the hydrophilic colloidal layers is hardened by a hardener represented by a formula of ##STR1## wherein R.sub.1 and R.sub.2 represent each an alkyl group having 1 to 3 carbon atoms, an aryl group or an aralkyl group, provided, they may be the same with or the different from each other and they may so associate together as to represent `an atom group necessary to form a piperidine ring or a morpholine ring` in which the piperidine ring or the morpholine ring may each be substituted with an alkyl group or a halogen atom; R.sub.3 represents a hydrogen atom, a methyl group or an ethyl group; R.sub.4 represents a methylene group, a propylene group or a simple chemical bond; Me.sup.+ represents an alkali-metal cation; and X.sup.- represents an anion. The photographic material has preferable antistatic property and is suitable for the use of lithographic film.Type: GrantFiled: March 9, 1992Date of Patent: July 20, 1993Assignee: Konica CorporationInventors: Yasuhiko Takamuki, Hiroshi Nakamura
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Patent number: 5194367Abstract: A method for processing a silver halide photographic material for infrared laser scanner is described, comprising developing the silver halide photographic material which comprises a support having thereon at least one hydrophilic colloidal layer including at least one silver halide emulsion layer with an automatic developing machine, wherein the silver halide emulsion layer contains silver chloroiodobromide grains having a silver iodide content of 0 to 2 mol% and a silver chloride content of 0 to 30 mol%, the hydrophilic colloidal layer has a swelling percentage of 200% or less, and as a developing solution for the development step in the automatic developing machine, a single developing solution containing a 3-pyrazolidone developing agent represented by formula (I) is used therein: ##STR1## wherein R.sub.0 represents a substituted or unsubstituted aryl group; and R.sub.1, R.sub.2, R.sub.3 and R.sub.Type: GrantFiled: July 25, 1989Date of Patent: March 16, 1993Assignee: Fuji Photo Film Co., Ltd.Inventors: Minoru Yamada, Takashi Toyoda, Naoki Arai
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Patent number: 5155004Abstract: A chitosan or chitin compound having a photographically useful residue. There is also disclosed a method for processing a silver halide photographic material which comprises processing a silver halide photographic material comprising a support having thereon at least one light-sensitive silver halide emulsion layer in the presence of said chitosan or chitin compound represented by the following general formula (I) ##STR1## wherein the substituents are defined in the instant specification.Type: GrantFiled: March 13, 1991Date of Patent: October 13, 1992Assignee: Fuji Photo Film Co., Ltd.Inventor: Tetsuro Kojima
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Patent number: 5153116Abstract: There is disclosed a silver halide photographic light-sensitive material comprising a support and provided thereon, at least one silver halide light-sensitive layer spectrally sensitized by adding a spectral sensitizing dye during at least one process selected from a grain formation process, a physical reopening process and a desalting process, wherein said light-sensitive material contains at least one selected from the compounds represented by following Formula A: ##STR1## wherein R.sub.1 represents a hydrogen atom, an alkyl group, a cycloalkyl group, an alkenyl group, an aralkyl group, an alkoxy group, an aryl group, a heterocyclic group, a carbamoyl group, a thiocarbamoyl group, and a sulfamoyl group; R.sub.2 and R.sub.3 represent independently a hydrogen atom, a halogen atom, an alkyl group, a cycloalkyl group, an aryl group, a cyano group, an alkylthio group, an arylthio group, an alkylsulfoxide group, an alkylsulfonyl group, and a heterocyclic group, provided that R.sub.2 and R.sub.Type: GrantFiled: February 22, 1991Date of Patent: October 6, 1992Assignee: Konica CorporationInventors: Iku Metoki, Kiyoshi Sato
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Patent number: 5102780Abstract: The present invention provides a silver halide photographic photosensitive material excellent in dimensional stability which comprises a polyethylene terephthalate film support and, provided thereon, at least one gelatin layer containing an active halogen type hardener, wherein water content in the gelatin layer is 20% by weight or less based on total amount of gelatin. Further provided is a method for producing such silver halide photographic photosensitive material which comprises coating a gelatin coating solution containing an active halogen type hardener on a polyethylene terephthalate film support and then drying the coat, wherein the coat is dried so that water content based on total amount of gelatin is 20% by weight or less and then, is subjected to a heat treatment.Type: GrantFiled: April 26, 1990Date of Patent: April 7, 1992Assignee: Mitsubishi Paper Mills LimitedInventors: Eiichi Terashima, Seiichi Sumi, Kazuhisa Kobayashi, Yoshio Shibata
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Patent number: 5087694Abstract: The present invention relates to modified gelatin containing polyfluorinated substituents grafted on to the protein chain.It further relates to the process for the preparation of this modified gelatin, which consists in reacting a polyfluorinated derivative containing a group capable of reacting with the OH or NH.sub.2 groups of the gelatin in aqueous solution.Application: photographic film preparations.Type: GrantFiled: December 15, 1989Date of Patent: February 11, 1992Assignee: SanofiInventors: Sylviane Dumas, Georges Takerkart
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Patent number: 5073480Abstract: Process for hardening proteinaceous materials by means of a quick acting hardener corresponding to the following formula ##STR1## wherein: Z.sub.1 and Z.sub.2 each independently represent substituted or unsubstituted alkyl, substituted or unsubstituted cycloalkyl, substituted or unsubstituted aryl, or Z.sub.1 represents substituted or unsubstituted alkylidene or Z.sub.1 and Z.sub.Type: GrantFiled: July 11, 1990Date of Patent: December 17, 1991Assignee: AGFA-Gevaert, N.V.Inventors: Piet Kok, Erik V. Van der Eycken
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Patent number: 5070008Abstract: A light-sensitive silver halide photographic material which comprises a support and provided thereon a silver halide emulsion layer containing silver halide grains of which silver chloride content is not less than 90 mol %, and which have been formed in the presence of an iridium compound and a nitrogen containing heterocyclic compound, and under acidic condition is disclosed.Type: GrantFiled: November 14, 1990Date of Patent: December 3, 1991Assignee: Konica CorporationInventors: Hideaki Maekawa, Masanobu Miyoshi
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Patent number: 5063145Abstract: A silver halide color photographic material, comprising at least one red-sensitive silver halide emulsion layer; at least one green-sensitive silver halide emulsion layer; and at least one blue-sensitive silver halide emulsion layer, wherein the layers are coated on a support and the photosensitive material comprises at least one compound which reacts with the oxidation products of color developing agents during development and releases a bleach accelerator, and the swelling factor of the photosensitive material in the development bath is at least 2.8.Type: GrantFiled: February 10, 1989Date of Patent: November 5, 1991Assignee: Fuji Photo Film Co., Ltd.Inventor: Ken Sakanoue
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Patent number: 5063139Abstract: A color photographic light-sensitive material capable of being processed at an ultrahigh speed, which comprises at least two light-sensitive layers on at least one side of a support wherein each layer contains a light-sensitive silver halide emulsion and a nondiffusive oil-soluble coupler capable of coupling with an oxidation proudct of an aromatic primary amine color developing agent to produce a dye, said light-sensitive layers having different sensitive wavelength ranges, said silver halide is silver chloride or silver chlorobromide containing at least 90 mol % of silver chloride, and the alkali-consuming amount of said light-sensitive material is not more than 2.6 mmol/m.sup.2.A process for the formation of color images using the light-sensitive material, which comprises imagewise exposing light-sensitive material, and then subjecting the material to color development for not more than 20 seconds.Type: GrantFiled: June 15, 1990Date of Patent: November 5, 1991Assignee: Fuji Photo Film Co., Ltd.Inventor: Hiroshi Hayashi
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Patent number: 5034249Abstract: Layers containing proteinaceous binders, in particular gelatin layers of the kind used, for example, in photographic recording materials, are hardened by means of an instant hardener by casting a hardening system composed of at least two layers over the layer of binder, the lower of these two layers containing the instant hardener while the upper layer, which may be applied together with or immediately after the lower layer, contains a protein-containing binder but no hardener. The hardened layers have improved surface properties (wet scratch resistance, antifriction properties).Type: GrantFiled: August 19, 1987Date of Patent: July 23, 1991Assignee: Agfa Gevaert AktiengesellschaftInventors: Heinz Reif, Prem Lalvani, Hans Buschmann
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Patent number: 5026632Abstract: It has been shown by Photon Correlation Spectroscopy that when additional hardener is added to below saturation gel-grafted polymer particles, the gel layer shrinks due to hardening, as there is no free gel left in solution. In films, such case-hardened gelatin-grafted soft polymer particles can act as highly elastic stress absorbing fillers. This is because the dry case-hardened shell is expected to form a thin hard shell around the soft polymer particles. It is shown that gelatin-grafted soft polymer particles and case-hardened gelatin-grafted soft polymer particles, incorporated in the emulsion layers of pressure sensitive photographic products, produce coatings with highly reduced pressure sensitivity without any developability or delamination concerns. In this invention the case-hardened gelatin-grafted polymer particles are preferred over the simple gelatin-grafted material.Type: GrantFiled: March 22, 1990Date of Patent: June 25, 1991Assignee: Eastman Kodak CompanyInventors: Pranab Bagchi, William L. Gardner
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Patent number: 5026628Abstract: Photographic compound (A) capable of releasing a photographically useful group is represented by the formula: SOL-CAR-LINK-PUG wherein SOL is a water-solubilizing group; CAR is a carrier moiety that, upon reaction with oxidized developing agent, is capable of releasing LINK-PUG and capable of forming a compound that is washed out of the photographic element during photographic processing; LINK-PUG is in turn capable of releasing a photographically useful group (PUG) during photographic processing and LINK-PUG is represented by the formula: ##STR1## wherein X, R.sub.1, R.sub.2, R.sub.3, R.sub.4 and PUG are as defined in the application. The photographic compound (A) enables formation of easily removable compounds in photographic elements and processes that provide images having improved acutance.Type: GrantFiled: February 22, 1990Date of Patent: June 25, 1991Assignee: Eastman Kodak CompanyInventors: William J. Begley, Teh-Hsuan Chen, Kenneth N. Kilminster, Jerrold N. Poslusny, Wojciech Slusarek
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Patent number: 5021336Abstract: Color photographic recording material containing, on a reflective layer support, at least one blue sensitive, at least one green sensitive and at least one red sensitive layer of binder containing silver halide and optionally other light insensitive layers of binder, which binder has been hardened with an instant hardener, said recording material containing either from 100 to 900 mMol of soluble chloride and from 0 to 50 mMol of soluble bromide per mole of Ag or from 0 to 600 mMol of soluble chloride and from 5 to 50 mMol of soluble bromide per mol of Ag is distinguished by an exceptionally slight storage fog.Type: GrantFiled: July 13, 1990Date of Patent: June 4, 1991Assignee: Agfa Gevaert AktiengesellschaftInventors: Helmut Reuss, Bruno Mucke, Helmut Mader, Dieter Rockser
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Patent number: 5019492Abstract: A novel blocked photographically useful compound comprises a new blocking group that (a) comprises two electrophilic groups, the least electrophilic of which is bonded directly or through a timing group to the photographically useful group (PUG) of the compound, (b) is capable of reacting with a dinucleophile reagent, and (c) has the two electrophilic groups separated from each other by a bond or unsubstituted or substituted atom that enables nucleophilic displacement to occur with release of PUG when the compound is reacted with a dinucleophile reagent. Such a blocked photographically useful compound is useful in a photographic material and process to provide increased stability and enable more rapid release of the photographically useful group upon reaction with a dinucleophile reagent.Type: GrantFiled: April 26, 1989Date of Patent: May 28, 1991Assignee: Eastman Kodak CompanyInventors: John M. Buchanan, Ewell R. Cook, Jared B. Mooberry, Gary S. Proehl, Stephen P. Singer, William N. Washburn
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Patent number: 5017463Abstract: A process for developing a silver halide photographic material having, on a support, at least one silver halide emulsion layer comprising a silver halide emulsion spectrally sensitized by an infrared-sensitizing dye, which is subjected to image-wise exposure, then development and fixing processing and then washing or stabilization processing, wherein the silver halide in the silver halide emulsion layer contains 90 mol % or more of silver chloride, the swelling rate for hydrophilic colloid layers containing the silver halide emulsion layer is 150% or less, and the replenishment in the washing or stabilization processing is 1,200 ml or less per square meter of the photographic material.Type: GrantFiled: October 13, 1989Date of Patent: May 21, 1991Assignee: Fuji Photo Film Co., Ltd.Inventors: Nobuaki Inoue, Katsumi Hayashi
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Patent number: 5013637Abstract: A silver halide photographic light-sensitive material is disclosed which is improved in antistatic property. The photographic material comprises a support, a silver halide emulsion layer and an antistatic layer comprising a water-soluble conductive polymer, a hydrophobic polymer particle and a silane coupling agent represented by the following Formula I: ##STR1## wherein X is an oxygen atom or a --OCO-- group; R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are each an alkyl group or an aryl group which may be the same or different and are allowed to be substituted, and at least one of the groups represented by R.sub.1, R.sub.2, R.sub.3 and R.sub.4 is a group containing a double bond, a halogen atom, an epoxy group, an acid anhydride residue, an alkoxy group, an alkoxycarbonyl group, an amino group, an acryloyl group, a methacryloyl group, an acrylamido group, a methacrylamido group or a haloacylamino group; n.sup.1, n.sup.2 and n.sup.3 are each 0 or 1, which may be the same or different, provided that the total of n.Type: GrantFiled: October 11, 1990Date of Patent: May 7, 1991Assignee: Konica CorporationInventor: Kazuya Tsukada
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Patent number: 5009990Abstract: A photographic recording material which has at least one silver halide emulsion layer containing gelatine, at least one protective layer and at least one hardening layer and in which the protective layer is further removed from the layer support than any silver halide emulsion layer and the hardening layer is further removed from the layer support than any other layer and contains an effective quantity of at least one instant hardener will have improved stability in storage under moist, warm conditions if the protective layer contains an effective quantity of at least one azaindene.Type: GrantFiled: November 20, 1989Date of Patent: April 23, 1991Assignee: Agfa-Gevaert AktiengesellschaftInventors: Rainer Scheerer, Franz Moll
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Patent number: 5008177Abstract: Disclosed is a gelatino-silver halide photographic material which contains a dye of the following formula (I), described in detail herein and at least one hardener. ##STR1## The dye is decolored by photographic processing and does not exert any adverse influence on the photographic characteristics, especially the spectral sensitizability, of the photographic material. The material exhibits excellent storage stability and has a negligible moisture-dependency in exposure.Type: GrantFiled: December 9, 1988Date of Patent: April 16, 1991Assignee: Fuji Photo Film Co., Ltd.Inventors: Kensuke Goda, Shigeru Ohno
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Patent number: 4990438Abstract: Disclosed is a direct positive light-sensitive photographic material having at least one silver halide emulsion layer containing inner latent image type silver halide grains not previously fogged, which gives a direct positive image after image exposure by surface development after application of fogging treatment or while applying fogging treatment, wherein the inner latent image type silver halide grains comprise substantially silver chloride, and the silver halide emulsion layer or a hydrophilic colloid layer adjacent thereto contains at least one active halide type or active vinyl type gelatin hardener, and at least one compound represented by the formula (I) or (II) described in the specification. This direct positive light-sensitive silver halide photographic material is particularly excellent in stability with lapse of time.Type: GrantFiled: October 10, 1989Date of Patent: February 5, 1991Assignee: Konica CorporationInventors: Keiji Ogi, Eiichi Sakamoto, Tomomi Yoshizawa
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Patent number: 4980273Abstract: The matting agent particles of matted photographic imaging materials contain a finely divided solid as well as a dye that is only present at the image-forming points after exposure and development of the material. The starry night effect is thereby avoided. The dye can be formed during exposure and development from a precursor, e.g., from silver halide or from couplers for color photography or for diazo processes.Type: GrantFiled: July 26, 1989Date of Patent: December 25, 1990Assignee: E. I. DuPont de Nemours and CompanyInventor: Manfred Fautz
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Patent number: 4977059Abstract: A method for forming microcapsules by enwrapping an oily core material in a formaldehyde condensation product formed in situ wherein a dispersant is used of the formula (I): ##STR1## where: M is an alkali metal cation or a quaternary ammonium group,L is --(CH.sub.2).sub.p, --COO(CH.sub.2).sub.p, --C.sub.6 H.sub.4 -- or a direct bond;R, R.sup.2 and R.sup.6 are the same or different and represent a hydrogen atom or a methyl group;R.sup.1 is a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, or --SO.sub.3 M where M is defined as above; R.sup.3 is --COOR.sup.4, --CONHR.sup.4, --CO--R.sup.4, a pyridinyl group or quaternary salt thereof, --COOCH.sub.2 CH.sub.2 N(CH.sub.3).sub.2 --, --COOCH.sub.2 CH.sub.2 N.sub.4 (CH.sub.3).sub.3 Cl-- group having 1 to 12 carbon atoms, an aralkyl group, an aryl group, or --(CH.sub.2).sub.m --OOC--CR.sup.2 CH.sub.2, --(OCH.sub.2 CHhd 2).sub.m COO--CR.sup.2 CH.sub.2 or --(CH.sub.2).sub.m NHCO--CR.sup.2 CH.sub.2 ;x is about 0.4 to 0.8;y is about 0.2 to 0.6;z is about 0 to 0.Type: GrantFiled: May 12, 1989Date of Patent: December 11, 1990Assignee: The Mead CorporationInventors: Rong-Chang Liang, William H. Simpson, Katherine A. Gyure, Kenneth P. Carpenter
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Patent number: 4977065Abstract: There is described a waterproof support material for light-sensitive materials with an anti-curl layer applied in two successive coatings on the reverse side.With the first coating, gelatin is dried out from the sol form and hardened in such a manner that, after the drying of the first coating, the second coating, which contains additional hardening agent, can be applied immediately without difficulty. Chromium(III)-salts are contained in both coatings as hardening agents.Through the selected combination of 2 process steps, anti-curl layers of extremely low water absorption capacity are obtained.Type: GrantFiled: June 30, 1988Date of Patent: December 11, 1990Assignee: Felix Schoeller Jr. GmbH & Co. KGInventors: Frits B. Ruben, F. B. Ruben
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Patent number: 4963466Abstract: A silver halide photographic light-sensitive material comprising a support bearing thereon at least one silver halide emulsion layer containing a dye-forming coupler and a compound represented by Formula [I] as defined in the specification. The light-sensitive material further comprises at least one silver halide emulsion layer containing silver halide grains having a silver chloride content of not less than 90 mole percent and a compound represented by Formula [S] as defined in the specification.The presence of the compounds of Formula [I] and Formula [S] provide a material having a suitable contrast and having additional advantages such as excellent BF contamination resistance and pH variation resistance.Type: GrantFiled: January 24, 1990Date of Patent: October 16, 1990Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Makoto Kajiwara, Masanobu Miyoshi, Kaoru Onodera, Eiichi Sakamoto
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Patent number: 4960688Abstract: A silver halide color photographic material is described comprising a support having thereon at least one silver halide emulsion layer, wherein the silver halide color photographic material contains a water-soluble polymer comprising at least one repeating unit represented by formula (I) ##STR1## wherein A represents a vinyl repeating unit having a color coupler moiety which is capable of forming a dye upon coupling with an oxidation product of an aromatic primary amine developing agent;and at least one repeating unit selected from the group consisting of formulae (II-A), (II-B), (II-C), (II-D), (II-E), and (II-F): ##STR2## The water-soluble polymer is a photographic polymeric coupler incorporating a crosslinkable group with gelatin and the silver halide color photographic material containing the water-soluble coupler is excellent in layer strength and image sharpness.Type: GrantFiled: February 29, 1988Date of Patent: October 2, 1990Assignee: Fuji Photo Film Co., Ltd.Inventors: Kei Sakanoue, Yoshio Ishii, Tsumoru Hirano
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Patent number: 4939079Abstract: Photographic recording materials of which the binder layers consist of protein-like binders which have been hardened in the usual way show reduced susceptibility to the effect of formaldehyde when--in addition to the usual hardeners--low molecular weight monofunctional compounds which are capable of reacting with free primary amino groups of the binder under casting and/or storage conditions without causing additional hardening are allowed to act on the binder.Type: GrantFiled: February 15, 1989Date of Patent: July 3, 1990Assignee: Agfa/Gevaert AktiengessellschaftInventors: Erich Wolff, Hans Langen, Wolfgang Himmelmann, Gunter Helling
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Patent number: 4921785Abstract: A silver halide photographic material comprises a support having thereon at least one light-sensitive silver halide emulsion layer, at least one layer of said material comprising gelatin crosslinked with a crosslinking agent, said crosslinks being capable of being cleaved on reduction.Type: GrantFiled: April 29, 1988Date of Patent: May 1, 1990Assignee: Fuji Photo Film Co., Ltd.Inventors: Koki Nakamura, Ichizo Toya
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Patent number: 4917994Abstract: Color photographic print materials are described in which the surface pH is between about 4.0 and 5.3. The photographic elements have improved keeping properties under adverse conditions of storage.Type: GrantFiled: March 1, 1988Date of Patent: April 17, 1990Assignee: Eastman Kodak CompanyInventors: Alberto M. Martinez, Ronald G. Olsen, Gary W. Visconte