Polyester Or Polycarbonate Patents (Class 430/533)
  • Patent number: 5298373
    Abstract: Silver halide black-and-white photosensitive material is processed with a fixer which contains 0.5 to 2.0 mol/liter of a thiosulfate and 0.003 to 0.3 mol/liter of a meso-ionic compound, the moles of the meso-ionic compound divided by the moles of the thiosulfate being from 0.003 to 0.2. The fixer accelerates fixing speed, enabling rapid processing of photographic material.
    Type: Grant
    Filed: December 6, 1991
    Date of Patent: March 29, 1994
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Senzo Sasaoka, Katsumi Hayashi, Kota Fukui, Tetsuro Kojima
  • Patent number: 5294473
    Abstract: A photographic polyester support is disclosed which hardly curls when heat-treated at a temperature of from 50.degree. C. to the glass transition temperature thereof in the form of a bulk roll, its thickness pattern satisfying the conditions of (1) Max-Min in the whole widthwise direction (TD R value): 8 .mu.m or less, (2) Max-Min of 5 m length in the lengthwise direction (MD R value): 10 .mu.m or less, (3) the difference in thickness between the adjacent hill and hollow (MD fluctuation): 8 .mu.m or less, and (4) the maximum value of hills above a base line of the average thickness of both ends (TD base line value): 5 .mu.m or less. The surface flatness of the heat-treated support is good. When the support is coated with photographic emulsions, the surface of the coated photographic material is even.
    Type: Grant
    Filed: August 13, 1993
    Date of Patent: March 15, 1994
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Fumio Kawamoto
  • Patent number: 5292628
    Abstract: The adhesion of photographic layers to a film base thateither has, on one or both sides, a surface consisting of a polyolefin layer that has been treated with a corona discharge,or consists of a polyester film provided with a (first) substrate layeris improved by an adhesive layer that is applied in the form of an oil-in-water emulsion consisting of50 to 60 wt % of oil-formers and40 to 50 wt % of a solid consisting of50 to 80 wt % gelatin and20 to 50 wt % colloidal SiO.sub.2together with the following layers to the surface of the film base.
    Type: Grant
    Filed: April 27, 1993
    Date of Patent: March 8, 1994
    Assignee: AGFA Gevaert AG
    Inventors: Fritz Nittel, Heinz-Gunther Auweiler, Manfred Peters, Hartmut Randolph
  • Patent number: 5288570
    Abstract: A composite film article which is a flexible, heat resistant polymeric film material having a non-opaque, partially translucent white surface side, having a visible light opacity of from about 0.90 to about 0.99; and a non-opaque, black surface side having a visible light opacity of less than 1.0, a transmission density of less than about 2.0 and a thickness of less than about 5.0 microns. The article may be used as a base for images such that the images have a reduced optical dot gain.
    Type: Grant
    Filed: August 12, 1992
    Date of Patent: February 22, 1994
    Assignee: Hoechst Celanese Corporation
    Inventors: Robert J. von Trebra, Dennis J. Bellville
  • Patent number: 5288601
    Abstract: The invention contemplates a light-sensitive silver halide photographic element having at least one silver halide containing emulsion layer on a film base, the film base being a coextruded laminate having a first layer and a second layer, the first layer being a polyester of an aromatic dicarboxylic acid or a dialkyl ester thereof and an alkylene glycol adjacent to the emulsion layer, the second layer being a polyester having a humidity expansion coefficient greater than 5.times.10.sup.-5 ##EQU1## (RH is relative humidity) and a Young's modulus at 50% relative humidity greater than 300 kPSI.
    Type: Grant
    Filed: July 21, 1993
    Date of Patent: February 22, 1994
    Assignee: Eastman Kodak Company
    Inventors: Jehuda Greener, James M. Pearson
  • Patent number: 5288715
    Abstract: A cellulose ester film which can be melt cast is manufactured by esterfying cellulose to form a cellulose acetate or cellulose acetate propionate having degrees of substitution of DSac=1.9 to 2.6, DSpr=0 to 0.9 and DS.sub.OH =0 to 0.55 and melt compounding the resulting polymer with a non-volatile phosphoric acid ester. A film is formed by melt extruding the compounded polymer onto a cooling surface to form a solid film. The film is then biaxially oriented at 130.degree. to 200.degree. C. and a stretch ratio of 1.25x to 2.5x in both directions. The resulting product is a film of excellent properties such as surface smoothness, light transmission, low haze, low color, high elastic modulus and curl relaxation after aqueous processing. The melt cast film is useful as a photographic roll film to replace solvent cast cellulose triacetate.
    Type: Grant
    Filed: February 16, 1993
    Date of Patent: February 22, 1994
    Assignee: Eastman Kodak Company
    Inventors: Julie S. Machell, I. Daniel Sand
  • Patent number: 5281514
    Abstract: Photographic element having high dimensional stability comprising a hydrophobic polyester film support, a barrier layer retarding diffusion of water in liquid or vapor phase into the hydrophobic polyester film support, and at least one hydrophilic image-precursor layer, said barrier layer being a vapor-deposited glass layer.
    Type: Grant
    Filed: December 10, 1992
    Date of Patent: January 25, 1994
    Assignee: AGFA-Gevaert, N.V.
    Inventors: Guido Desie, Eric Verschueren
  • Patent number: 5278040
    Abstract: A reflective silver halide photographic light-sensitive material is disclosed. The light-sensitive material comprises a reflective support having thereon a silver halide emulsion layer wherein the support have an oxygen permeability of not more than 2.0 ml/m.sup.2 .multidot.hr.multidot.atm and the silver halide emulsion layer contains a magenta coupler represented by the following Formula I; ##STR1## wherein Ar is an aryl group; Y is a hydrogen atom or a substituent capable of splitting off upon reaction with the oxidation product of a color developing agent; X is a halogen atom, an alkoxy group or an alkyl group; R is a strait- or branched-chain alkyl group having 1 to 20 carbon atoms; J is a strait- or branched-chain alkylene group; and n is an integer of from 0 to 4, when n is 2 or more, the plurality of Xs may be the same or different. The light-sensitive material is excellent in red color reproducibility and light fastness of red colored images.
    Type: Grant
    Filed: August 24, 1992
    Date of Patent: January 11, 1994
    Assignee: Konica Corporation
    Inventors: Yukio Ohya, Shuji Murakami, Masanobu Miyoshi, Hideaki Maekawa
  • Patent number: 5254449
    Abstract: A photographic element comprising a photosensitive layer, a flexible cellulose organic ester support film, and a substantially transparent magnetic recording layer having a dried thickness of less than about 1.5 micron exhibits improved magnetic and photographic performance and is particularly valuable as a color or black and white negative or reversal film.
    Type: Grant
    Filed: December 13, 1991
    Date of Patent: October 19, 1993
    Assignee: Eastman Kodak Company
    Inventors: Robert O. James, John Rieth
  • Patent number: 5250404
    Abstract: A silver halide photographic material is disclosed, comprising a transparent support containing a magnetic recording material, wherein the support is formed by co-flow-extending a dope containing the magnetic recording material and a dope not containing the magnetic recording material.
    Type: Grant
    Filed: September 12, 1991
    Date of Patent: October 5, 1993
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Yoshio Sakakibara
  • Patent number: 5244780
    Abstract: A polymeric film substrate is first modified, then coated with a polyalkyl acrylate/gelatin layer to improve the wet adhesion of the layer to the substrate. The layer may itself contain a photographic emulsion or emulsion layers may be adhered to that layer.
    Type: Grant
    Filed: May 28, 1991
    Date of Patent: September 14, 1993
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Mark A. Strobel, Robert L. Carlson, Steven L. Ginkel, Jeffrey L. Solomon
  • Patent number: 5229260
    Abstract: 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: Grant
    Filed: March 9, 1992
    Date of Patent: July 20, 1993
    Assignee: Konica Corporation
    Inventors: Yasuhiko Takamuki, Hiroshi Nakamura
  • Patent number: 5227275
    Abstract: Disclosed is a lithographic printing plate material which provides a printing plate which causes no peeling of film even after printing of a large number of prints and even with use of special printing ink such as ultraviolet-curing ink. This printing plate material comprises a polyester film subjected to hydrophilization treatment by coating with an organic copolymer as a support and at least one undercoat layer, at least one emulsion layer containing a silver halide, and an image receiving layer containing physical development nuclei provided on the support in this order, characterized in that the lowermost undercoat layer contiguous to the support contains a bisphenol type epoxy resin latex.
    Type: Grant
    Filed: September 28, 1992
    Date of Patent: July 13, 1993
    Assignee: Mitsubishi Paper Mills Limited
    Inventors: Hiroshi Miyazu, Yoshikazu Takaya
  • Patent number: 5225319
    Abstract: Disclosed is a light-sensitive silver halide photographic material having at least one layer containing a silver halide emulsion on a support, wherein at least one layer containing said silver halide emulsion contains a silver halide emulsion having at least partially silver halide grains formed by the fine grain feeding method, and said support has a thickness of 25 .mu.m to 120 .mu.m.
    Type: Grant
    Filed: November 5, 1991
    Date of Patent: July 6, 1993
    Assignee: Konica Corporation
    Inventors: Fumie Fukazawa, Hiroshi Takada
  • Patent number: 5223383
    Abstract: Disclosed are photographic elements having reflective or diffusely transmissive supports shaped from a continuous oriented polymer phase having dispersed therein microbeads of a polymer which are at least partially bordered by void space, the microbeads being present in an amount of about 5-50% by weight based on the weight of the oriented polymer, and the void space occupying about 2-60% by volume of the support. Preferably, the microbeads are cross-linked to an extent they will be resilient and elastic at the orientation temperature, and are coated with a slip agent. Such supports have excellent physical properties.
    Type: Grant
    Filed: April 30, 1990
    Date of Patent: June 29, 1993
    Assignee: Eastman Kodak Company
    Inventors: Larry K. Maier, Elizabeth K. Priebe, Jong S. Lee, Paul E. Woodgate, Glen C. Smith
  • Patent number: 5223372
    Abstract: A chemical mat film having good writability and printability is disclosed which includes a transparent film, a chemical mat layer provided on one or both sides of the transparent film and containing finely divided solid particles which provide surface roughness, and an overcoat layer formed of a polymeric material and provided over the surface of the chemical mat layer, the overcoat layer having a surface roughness which is substantially coincident with that of the chemical mat layer. The chemical mat film may be used as a substrate of a photosensitive film for supporting a photosensitive layer thereon.
    Type: Grant
    Filed: September 22, 1989
    Date of Patent: June 29, 1993
    Assignee: Somar Corporation
    Inventors: Shinichi Yamamoto, Hiromi Masamura
  • Patent number: 5221598
    Abstract: A base for a photographic element is provided which comprises a support having disposed thereon a vanadium pentoxide antistatic layer and an overlying barrier layer of a heat-thickening polyacrylamide polymer having hydrophilic functionality, and a method for preparing it.
    Type: Grant
    Filed: November 23, 1992
    Date of Patent: June 22, 1993
    Assignee: Eastman Kodak Company
    Inventors: Charles C. Anderson, Wayne A. Bowman, Billy R. Dotson
  • Patent number: 5215876
    Abstract: A radiographic element comprises a polyester support having double sided silver halide emulsion layers. An ultraviolet light absorbing methine compound is copolymerized with the support and is present in an amount sufficient to reduce the average percent transmission of ultraviolet light over the range of wavelength of from about 350 nm to about 395 nm to less than about 25 percent, and whereby the percent transmittance of said element is at least about 55 percent at a wavelength of about 410 nm for an element thickness of about 0.007 inches.
    Type: Grant
    Filed: August 29, 1991
    Date of Patent: June 1, 1993
    Assignee: Eastman Kodak Company
    Inventors: Wayne P. Pruett, Max A. Weaver, Elizabeth K. Priebe, Larry K. Maier, Robert E. Dickerson
  • Patent number: 5209985
    Abstract: An antistatic plastic film is disclosed. The film comprises a plastic base film and provided thereon a layer containing a polyvinylidene chloride and an antistatic layer containing an ionic polymeric compound in that order.
    Type: Grant
    Filed: July 8, 1991
    Date of Patent: May 11, 1993
    Assignee: Konica Corporation
    Inventors: Eiichi Ueda, Masahito Takada
  • Patent number: 5204219
    Abstract: The use of a gelled network of inorganic oxide particles on the polymeric surface of a substrate provides a subbing layer having the potential for antistatic properties, antihalation properties, and good coatability.
    Type: Grant
    Filed: January 21, 1992
    Date of Patent: April 20, 1993
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Wim J. Van Ooij, David R. Boston, Edward J. Woo
  • Patent number: 5194347
    Abstract: A sheet, ribbon or web material comprising a support made of a synthetic resin or a paper support coated with a layer of said resin, wherein a resin surface of said support is coated with a subbing layer and the subbing layer itself is coated with a hydrophilic colloid image-receiving layer containing development nuclei for silver image formation by DTR-processing, characterized in that the synthetic resin of said support is a polycarbonate or polypropylene resin, and said subbing layer contains in percent by weight on its total weight following ingredients: 1.3% to 80% of proteinaceous colloid, e.g. gelatin or caseine,0% to 85% of colloidal silica,1.
    Type: Grant
    Filed: November 26, 1991
    Date of Patent: March 16, 1993
    Assignee: Agfa-Gevaert N.V.
    Inventors: Leon L. Vermeulen, Robert S. Pauwels
  • Patent number: 5182161
    Abstract: There is disclosed a support for photosensitive materials which comprises base paper comprising natural kraft pulp, and a resin layer formed on the base paper, said natural kraft pulp being produced by digesting wood chips by the kraft process, and washing the digested product in the presence of an anti-foaming agent or a foam-inhibitor, followed by bleaching by the use of chlorine or an oxidizing agent containing at least one chlorine atom, and said natural kraft pulp having a number of areas tarnished by silver tarnishing reaction of 20 or less. This support exhibits good photographic properties when a silver halide photosensitive layer is provided thereon.
    Type: Grant
    Filed: July 9, 1991
    Date of Patent: January 26, 1993
    Assignee: Mitsubishi Paper Mills Limited
    Inventors: Touru Noda, Masayuki Tsubaki, Yasunosuke Sakai, Tetsuya Ashida, Hiroshi Matsuda
  • Patent number: 5180658
    Abstract: Disclosed are a white polyester composition comprising a polyester containing a titanium dioxide, and the titanium dioxide being one subjected to a heat treatment at a temperature of 350.degree. C. or higher after at least one of an inorganic surface treatment and an organic surface treatment, and a support for photography having a polyester layer comprising the white polyester composition.
    Type: Grant
    Filed: March 26, 1992
    Date of Patent: January 19, 1993
    Assignee: Konica Corporation
    Inventors: Kazuto Kiyohara, Hiromitsu Araki, Toshiaki Yamazaki, Ichiya Harada
  • Patent number: 5168033
    Abstract: A silver halide photographic material having at least one silver halide emulsion layer formed on a base is disclosed said base is a reflective base having an oxygen permeability of no more than 2.0 ml/m.sup.2.hr.atm, at least one of said silver halide emulsion layers is a magenta dye forming layer containing at least one magenta coupler of formula (I) shown below, and the layers positioned above said silver halide emulsion layer with respect to said base have a gelatin content of no less than 3 g/m.sup.2 : ##STR1## wherein Z represents a group of the non-metallic atoms necessary for forming a nitrogen-containing heterocyclic ring, provided that the ring formed by Z may have a substituent; X represents a hydrogen atom or a substituent capable of being eliminated upon reaction with the oxidation product of a color developing agent; and R is a hydrogen atom or a substituent.
    Type: Grant
    Filed: September 6, 1990
    Date of Patent: December 1, 1992
    Assignee: Konica Corporation
    Inventors: Shun Takada, Kaoru Onodera
  • Patent number: 5128233
    Abstract: A film support having an auxiliary layer coated over an antistatic layer coated on one side thereof is described. This element, which is particularly useful for the application of subsequently applied photosensitive layers on side opposite said auxiliary layer, comprises gelatin, a crosslinking agent, optionally a conductive polymer and an adhesion promoting amount of an adhesion agent, said adhesion agent selected from the group consisting of: compounds containing at least one --NH.sub.2 group and compounds containing at least two --NH groups, wherein said adhesion agent is sufficiently soluble in water that said adhesion promoting amount of adhesion agent may be dissolved in the dispersion used to coat said auxiliary layer, with the proviso that said adhesion agent is not malonamide. Preferred adhesion agents are urea, thiourea and 2-imidazolidone. Improved adhesion of the auxiliary layer to the antistatic layer is achieved.
    Type: Grant
    Filed: January 7, 1992
    Date of Patent: July 7, 1992
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Rudolf W. Beisswenger, Kurt B. Gundlach
  • Patent number: 5102780
    Abstract: 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: Grant
    Filed: April 26, 1990
    Date of Patent: April 7, 1992
    Assignee: Mitsubishi Paper Mills Limited
    Inventors: Eiichi Terashima, Seiichi Sumi, Kazuhisa Kobayashi, Yoshio Shibata
  • Patent number: 5096803
    Abstract: A method for producing a silver halide photographic material which comprises the steps of:(a) coating hydrophilic colloid coating liquid on a polyester support;(b) forming a hydrophilic colloid layer by drying said hydrophilic coating liquid, when A is not more than 300, in an atmosphere having a relative humidity of not more than 50% and such that the ratio A/B is at least 18whereinA is determined by the following formula:A=(M/S).times.100wherein M represents the moisture content by weight of said hydrophilic colloid layer on said support and S represents the solid weight of said hydrophilic colloid layer on said support, andB is the drying time until A is not more than 8 expressed in seconds; and(C) heat treating said coated supported from step (b) at a temperature of at least 30.degree. C. in a atmosphere having an absolute humidity of not more than 1%.The method of the present invention provides silver halide photographic materials which have improved dimensional stability.
    Type: Grant
    Filed: April 18, 1990
    Date of Patent: March 17, 1992
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Satoshi Kanetake, Shinichi Hashimoto
  • Patent number: 5091291
    Abstract: A coupler having as a coupling-off group an alkyl group substituted with an electron source capable of stabilizing carbonium ion.
    Type: Grant
    Filed: October 25, 1990
    Date of Patent: February 25, 1992
    Assignee: Eastman Kodak Company
    Inventors: Philip T. S. Lau, Danny R. Thompson
  • Patent number: 5085980
    Abstract: A photographic element is disclosed comprising a support having provided thereon a highly water-absorbing high molecular weight compound having degree of swelling of 5 or more.
    Type: Grant
    Filed: March 12, 1991
    Date of Patent: February 4, 1992
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Toshiaki Aono, Koichi Nakamura, Takeshi Shibata
  • Patent number: 5071736
    Abstract: A silver halide photographic material comprising a film support having thereon at least one hydrophilic colloid layer, at least one of which is a photosensitive silver halide emulsion layer, wherein the film support is a polyester film having a water content of at least 0.5 wt %, and at least one gelatin-containing layer contains a vinylsulfone based film hardening agent.
    Type: Grant
    Filed: February 8, 1991
    Date of Patent: December 10, 1991
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Shinpei Ikenoue, Hisashi Okamura, Seimi Satake
  • Patent number: 5061611
    Abstract: A method of preparing a light sensitive silver halide phtographic material is disclosed. The photographic material comprises a polyester support having a hydrophobic polymer layer containing a vinylidene chloride copolymer and at least one hydrophilic polymer layer. The method comprises steps of coating a hydrophilic polymer layer onto the polyester support, drying the layer until a water content of the layer reaches 60 wt %, and contacting the layer with air having a relative humidity of 5 to 25% for a period 5 seconds to 10 minutes. The photographic material according to the method has such a physical characteristics as dimensional stability for long time storage or anti-cracking of the photographic layer at the preparation period. It is suitable for printing use.
    Type: Grant
    Filed: May 1, 1990
    Date of Patent: October 29, 1991
    Assignee: Konica Corporation
    Inventors: Hideaki Sakata, Toshiharu Nagashima, Akira Kobayashi
  • Patent number: 5061612
    Abstract: Disclosed is a reflective support for photography, comprising a polyester film containing titanium oxide particles, wherein the particle size distribution of the titanium oxide particles with particle sizes of 0.05 .mu.m or more satisfies the formula shown below:N/.gamma..gtoreq.50 (I)N: number of the titanium oxide particles with particle sizes of 0.05 .mu.m within 10 .XI.m.times.10 .mu.m area in a transmission type electronmicrography photographed on a film sliced into a thin strip of about 2,000 .ANG. thick;.gamma.: the ratio of d.sub.80 to d.sub.20 when the particle distribution of the titanium oxide particles is measured by the above transmission type electronmicrography photographed:.gamma.=d.sub.80 /d.sub.20d.sub.80, d.sub.20 : respective particle sizes (.mu.m) when the integrated distribution of number of titanium oxide particles is 80% and 20%. Disclosed is also a photographic printing paper comprising the reflective support.
    Type: Grant
    Filed: February 26, 1990
    Date of Patent: October 29, 1991
    Assignee: Konica Corporation
    Inventors: Kazuto Kiyohara, Hiromitu Araki, Toshiaki Yamazaki, ' Ichiya Harada
  • Patent number: 5057403
    Abstract: A miniaturized package of a photosensitive material, which comprises a silver halide photosensitive material comprising a transparent synthetic resin support having at least one photosensitive silver halide emulsion layer formed thereon and a sealed container containing the photosenstive material, the support having a water content of 0.3 to 1.5% by weight and the content volume of the sealed container being 0.08 x cm.sup.3 or less when the area of one surface of the photosensitive material is x cm.sup.2. By this miniaturized package, the size and weight of camera can be reduced. The photographic properties of the photosensitive material contained in the package are not easily deteriorated.
    Type: Grant
    Filed: January 5, 1990
    Date of Patent: October 15, 1991
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Yuuji Kume, Shinpei Ikenoue
  • Patent number: 5021309
    Abstract: In an electrophotographic imaging device, material for an exposed anti-curl layer has organic fillers dispersed therein. The fillers provide coefficient of surface contact friction reduction, increased wear resistance, and improved adhesion of the anti-curl layer, without adversely affecting the optical and mechanical properties of the imaging member.
    Type: Grant
    Filed: April 30, 1990
    Date of Patent: June 4, 1991
    Assignee: Xerox Corporation
    Inventor: Robert C. U. Yu
  • Patent number: 5008178
    Abstract: A sheet or web material being a subbed or unsubbed hydrophobic resin support or paper support coated with at least one hydrophobic resin layer having at least on one side an outermost antistatic layer containing colloidal silica, characterized in that the antistatic layer is free from any cationic surfactant and consists of at least 70% of weight of colloidal silica having an average particle size smaller thatn 7 nm and a surface area of at least 500 m2 per gram, the colloidal silica being present at a coverage of at least 50 mg per m2.
    Type: Grant
    Filed: February 2, 1989
    Date of Patent: April 16, 1991
    Assignee: Agfa-Gevaert, N.V.
    Inventors: Etienne A. Van Thillo, Lucien J. Van Gossum
  • Patent number: 5006451
    Abstract: Photographic support materials are comprised of a conventional support, such as polyester film, cellulose acetate film or resin-coated paper, having thereon an antistatic layer comprising vanadium pentoxide and an overlying barrier layer comprised of a latex polymer having hydrophilic functionality. The barrier layer provides excellent adhesion between the antistatic layer and overlying layers, such as silver halide emulsion layers or curl control layers, and also prevents unwanted diffusion of the vanadium pentoxide; whereby the combination of antistatic and barrier layers serves to impart a high level of permanent antistatic protection.
    Type: Grant
    Filed: May 14, 1990
    Date of Patent: April 9, 1991
    Assignee: Eastman Kodak Company
    Inventors: Charles C. Anderson, Diane E. Kestner, Mark A. Lewis, Gary R. Opitz
  • Patent number: 4997744
    Abstract: Provided is a process and solvent solution for coating an aza-annulene chromophore containing film directly onto a polycarbonate or polymethylmethacrylate comprising base. In the process, a solution of the chromophore, e.g., phthalocyanine, porphyrin or naphthalocynine, is cast directly onto the polycarbonate or polymethylmethacrylate base, with the solvent used in formulating the solution comprising a C.sub.5 -C.sub.7 cyclic alcohol, or a mixture of solvents including at least one of the aforementioned alcohols. The solvent is then removed, preferably by evaporation, in order to yield a smooth, homogeneous chromophore containing film directly on the polycarbonate or polymethylmethacrylate comprising base.
    Type: Grant
    Filed: December 21, 1988
    Date of Patent: March 5, 1991
    Assignee: Hoechst Celanese Corp.
    Inventors: Palaiyur S. Kalyanaraman, David E. Nikles
  • Patent number: 4994353
    Abstract: A silver halide photographic material is described composed of a polyester support having a hydrophilic colloidal layer containing a polymer latex on at least one side thereof, wherein the polyester support has a subbing layer having a thickness of 0.3 .mu.m or more and containing a vinylidene chloride copolymer composed of at least (1) from 70 to 99.9% by weight of a vinylidene chloride monomer and (2) from 0.1 to 5% by weight of a vinyl monomer having at least one carboxyl group, the subbing layer further containing a compound represented by formula (I) or (II): ##STR1## wherein R.sup.1, R.sup.2, R.sup.3, and R.sup.4 each represents a chlorine atom, a hydroxyl group, an alkyl group, an alkoxy group, an alkylthio group, --OM (wherein M represents a monovalent metal atom), --NR'R", or --NHCOR'" (wherein R', R", and R'" each represents a hydrogen atom, an alkyl group, or an aryl group); Q.sup.1 and Q.sup.
    Type: Grant
    Filed: June 15, 1990
    Date of Patent: February 19, 1991
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Akira Hatakeyama, Takashi Naoi, Sumio Nishikawa
  • Patent number: 4981774
    Abstract: A silver halide photographic light-sensitive material having a support, a silver halide emulsion layer provided on one side of the support, and a backing layer provided on the other side of the support is disclosed. Said support is transparent, and the transmittances of the support, the support plus the backing layer, and the silver halide photographic light-sensitive material in 450 nm, 550 nm and 700 nm satisfy the following equations;.alpha..sub.700 =T.sub.B700 /T.sub.A700 =0.20 to 0.50.beta..sub.700 =T.sub.A700 /T.sub.0700 =0.05 to 0.30.alpha..sub.550 =T.sub.B550 /T.sub.A550 =0.10 to 0.40.beta..sub.550 =T.sub.A550 /T.sub.0550 =0.10 to 0.50.alpha..sub.450 =T.sub.B450 /T.sub.A450 =0.20 to 0.50.beta..sub.450 =T.sub.A450 /T.sub.0550 =0.15 to 0.50wherein T.sub.0700, T.sub.0550 and T.sub.0450 represent the transmittances of the support in 700 nm, 550 nm and 450 nm, respctively; T.sub.A700, T.sub.A550 and T.sub.
    Type: Grant
    Filed: August 24, 1989
    Date of Patent: January 1, 1991
    Assignee: Konica Corporation
    Inventors: Akiyoshi Tai, Shun Takada, Hisayoshi Tsurui
  • Patent number: 4980273
    Abstract: 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: Grant
    Filed: July 26, 1989
    Date of Patent: December 25, 1990
    Assignee: E. I. DuPont de Nemours and Company
    Inventor: Manfred Fautz
  • Patent number: 4977071
    Abstract: A silver halide photographic material composed of a polyester film support having thereon at least one hhydrophilic colloid layer containing a polymer latex; and between the support and the hydrophilic colloid layer a layer containing a vinylidene chloride copolymer core-shell latex; at least one hydrophilic colloid layer of the material being a light-sensitive silver halide emulsion layer. The photographic material has superior dimensional stability after processing.
    Type: Grant
    Filed: May 24, 1989
    Date of Patent: December 11, 1990
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Satoshi Kanetake, Shinichi Hashimoto, Shigetoshi Ono, Takashi Naoi
  • Patent number: 4954430
    Abstract: A silver halide photographic material is disclosed, having at least one hydrophilic colloid layer comprising a polyester support and having a polymer latex on at least one side of said polyester support, wherein both surfaces of said support are coated with a polymer layer comprising a copolymer containing from 50 to 99.5% by weight vinylidene chloride and wherein both polymer layers have a thickness of at least 0.3 .mu.m. A method for treating the silver halide photographic material is also disclosed.
    Type: Grant
    Filed: January 19, 1990
    Date of Patent: September 4, 1990
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Kunio Ishigaki, Takashi Naoi
  • Patent number: 4945025
    Abstract: A light-sensitive material comprising a light-sensitive layer which contains silver halide, a reducing agent and a polymerizable compound and support, wherin the light-sensitive layer is provided thereon with a cover sheet. A light-sensitive material comprising the light-sensitive layer and a support, wherein the light-sensitive layer is provided thereon with a protective layer is also disclosed.
    Type: Grant
    Filed: March 11, 1987
    Date of Patent: July 31, 1990
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Koichi Nakamura
  • Patent number: 4942105
    Abstract: A flexible electrophotographic imaging member comprising at least one electrophotographic imaging layer, a supporting substrate layer having an electrically conductive surface and an anti-curl layer, the anti-curl layer comprising a film forming binder and from about 3 percent by weight to about 30 percent by weight, based on the total weight of said anti-curl backing layer, of a copolyester resin reaction product of terephthalic acid, isophthalic acid, ethylene glycol and 2,2-dimethyl-1-propane diol. This flexible electrophotographic imaging member is cycled in an electrostatographic imaging system to produce toner images.
    Type: Grant
    Filed: January 3, 1989
    Date of Patent: July 17, 1990
    Assignee: Xerox Corporation
    Inventor: Robert C. U. Yu
  • Patent number: 4942104
    Abstract: An electrophotographic photoconductor is disclosed, which comprises a flexible film-type substrate, an electroconductive layer formed on a front surface of the substrate, a photoconductive layer formed on the electroconductive layer, and a curl prevention layer formed on the back side of the substrate opposite to the back side thereof, in which the curl prevention layer comprises one resin component selected from the group consisting of a polysulfone resin and a polyarylate resin.
    Type: Grant
    Filed: September 16, 1988
    Date of Patent: July 17, 1990
    Assignee: Ricoh Company, Ltd.
    Inventors: Ryouichi Kitajima, Satoshi Otomura
  • Patent number: 4933267
    Abstract: A silver halide photographic material is disclosed, having at least one hydrophilic colloid layer comprising a polyester support and having a polymer latex on at least one side of said polyester support, wherein both surfaces of said support are coated with a polymer layer comprising a copolymer containing from 50 to 99.5% by weight vinylidene chloride and wherein both polymer layers have a thickness of at least 0.3 .mu.m. A method for treating the silver halide photographic material is also disclosed.
    Type: Grant
    Filed: November 17, 1989
    Date of Patent: June 12, 1990
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Kunio Ishigaki, Takashi Naoi
  • Patent number: 4916011
    Abstract: An element, e.g., photographic element, comprising a polymeric shaped article having available carboxyl groups on the surface thereof and which is coated with at least one permanent antistatic layer consisting essentially of the reaction produce of(1) water-soluble, electrically conductive polymer having functionally attached carboxyl groups integral to the polymer, and(2) polyfunctional substituted aziridine, e.g., with alkyl of 1 to 6 carbon atoms, the coating weight of the antistatic layer, based on weight of (1), being less than 4.5 mg/dm.sup.2, preferably less than 3.8 mg/dm.Elements using such layers are free of haze and show reduced propensity to produce static. The layers are useful in silver halide, photopolymer, diazo, and vesicular image-forming elements, etc.
    Type: Grant
    Filed: July 20, 1989
    Date of Patent: April 10, 1990
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Conrad E. Miller
  • Patent number: 4902593
    Abstract: An image-receiving material suitable for image production by dye diffusion transfer processing controlled by the development of (an) image-wise exposed silver halide emulsion layer(s), wherein said image-receiving material contains a hydrophobic resin support coated with a subbing layer that is coated with an image-receiving layer containing gelatin in combination with a cationic polymeric mordant containing glycidyl groups that can react with active hydrogen atoms of gelatin, the weight ratio of said polymeric mordant to gelatin being 25:1 to 1:1 and the gelatin being present at a coverage of at least 0.1 g per m2, and wherein said subbing layer has been applied from an aqueous composition comprising a polyester-polyurethane wherein isocyanate groups still present in its structure have reacted with an ionomeric compound containing at least one active hydrogen atom and a carboxylate or sulphonate salt group.
    Type: Grant
    Filed: September 13, 1988
    Date of Patent: February 20, 1990
    Assignee: Agfa-Gevaert, N.V.
    Inventors: Leon L. Vermeulen, Ludovicus H. Vervloet, Willy P. De Smedt, Piet Kok
  • Patent number: 4900654
    Abstract: Disclosed are photographic elements having reflective or diffusely transmissive supports shaped from a continuous polyester phase having dispersed therein microbeads of cellulose acetate which are at least partially bordered by void space, the microbeads of cellulose acetate being poresent in an amount of about 10-30% by weight based on the weight of said polyester, said void space occupying about 2-50% by volume of said shaped article. Such articles have excellent physical properties.
    Type: Grant
    Filed: September 9, 1988
    Date of Patent: February 13, 1990
    Assignee: Eastman Kodak Company
    Inventors: Mark A. Pollock, William J. Stowell, James J. Krutak
  • Patent number: H1016
    Abstract: A silver halide photosensitive material is disclosed, comprising a polyester film support having thereon at least one hydrophilic colloid layer, at least one layer of which is a silver halide emulsion layer and at least one layer of which is a polymer latex-containing hydrophilic colloid layer, said polyester film support having coated on each side thereof a vinylidene chloride copolymer having a weight average molecular weight not more than 45,000, said vinylidene chloride copolymer being a core/shell type latex, said core part containing at least one of each type of repeating unit represented by formulae (I) and )II) and the said shell part containing at least one of each type of repeating unit represented the formulae (I), (III) and (IV): ##STR1## wherein A.sup.1 represents a hydrogen atom, a methyl group or a halogen atom, A.sup.2 represents a substituted or unsubstituted alkyl group or phenyl group, A.sup.3 represents a hydrogen atom or a methyl group, A.sup.
    Type: Grant
    Filed: October 26, 1990
    Date of Patent: January 7, 1992
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Akira Hatakeyama, Tomokazu Yasuda, Takashi Naoi, Shigetoshi Ono