Polymer Of Unsaturated Monomer Patents (Class 430/536)
  • Patent number: 5741633
    Abstract: The invention describes silver halide packet emulsion grains or crystals that are conventionally precipitated using gelatin of a given isoelectric pH, surrounded by a layer of gelatin-grafted-polymer particles wherein the grafted gelatin has a different isoelectric pH and the said gelatin-grafted-polymer particles are optionally chemically bonded to the gelatin surrounding the silver halide microcrystals. Such packet emulsions can form the basis for a mixed-packet color photographic system.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: April 21, 1998
    Assignee: Eastman Kodak Company
    Inventors: Mark Anthony Whitson, John Derek Lewis, Tienteh Chen, Thomas Joseph Dannhauser, Pranab Bagchi
  • Patent number: 5738983
    Abstract: A photographic imaging element comprising a support, at least one light-sensitive silver halide layer, and a light-insensitive layer comprising a polymer particle of the formula:(A).sub.x (B).sub.y (C).sub.z (I)where A is a polyfunctional ethylenically unsaturated crosslinking monomer, B is an ethylenically unsaturated monomer containing carboxylic acid groups, C is a monofunctional ethylenically unsaturated monomer other than B, x is about 0.1 to 2 mole percent, y is about 35 to 70 mole percent and z equals 100-(x+y) mole percent.
    Type: Grant
    Filed: April 16, 1996
    Date of Patent: April 14, 1998
    Assignee: Eastman Kodak Company
    Inventors: Dennis Edward Smith, Alfred Bruce Fant, John Leonard Muehlbauer, Yongcai Wang
  • Patent number: 5723275
    Abstract: The present invention describes an imaging element having a support, an image forming layer and at least one layer formed from an aqueous coating composition containing a film forming binder. The film forming binder is an interpolymer containing carboxylic acid groups. The interpolymer contains from 60 to 90 weight percent vinylidene chloride. The interpolymer has an acid number of from 30 to 150 and the carboxylic acid groups are reacted with ammonia or amine so that the aqueous coating composition has a pH of from 7 to 10.
    Type: Grant
    Filed: September 11, 1996
    Date of Patent: March 3, 1998
    Assignee: Eastman Kodak Company
    Inventors: Yongcai Wang, Charles Chester Anderson
  • Patent number: 5723274
    Abstract: The present invention is an imaging element which includes a support and at least one layer formed from, (A) film forming binder, and (B) non-film forming polymeric particles. The film forming binder is formed from a coating solution of carboxylic acid containing vinyl polymer or copolymer having a glass transition temperature of greater than 50.degree. C. and an acid number of 60 to 260, the carboxylic acid containing vinyl polymer or copolymer is reacted with ammonia or amine so that the coating solution has a pH of from 7 to 10.
    Type: Grant
    Filed: September 11, 1996
    Date of Patent: March 3, 1998
    Assignee: Eastman Kodak Company
    Inventors: Charles Chester Anderson, Yongcai Wang
  • Patent number: 5723273
    Abstract: The present invention is an imaging element which includes a support and at least one image forming layer. The imaging element further includes an antistatic layer and a protective layer overlying the antistatic layer. The protective layer is formed from an aqueous coating solution containing a film forming binder and a crosslinking agent. The film forming binder is a carboxylic containing vinyl polymer or copolymer having a glass transition temperature of greater than 50.degree. C. and an acid number of from 60 to 260. The carboxylic acid group of the vinyl polymer or copolymer are reacted with ammonia or amine to provide a pH of the coating solution of from 7 to 10.
    Type: Grant
    Filed: September 11, 1996
    Date of Patent: March 3, 1998
    Assignee: Eastman Kodak Company
    Inventors: Charles Chester Anderson, Yongcai Wang, James L. Bello, Mario D. DeLaura
  • Patent number: 5714310
    Abstract: A photographic support consisting essentially of a substrate and a resin layer provided on the image forming side of the substrate, said resin layer comprising a specific titanium dioxide pigment and others. This photographic support is excellent in that it has a high brightness and a high apparent whiteness and stability of the apparent whiteness is good; printed image of high sharpness can be formed thereon: and occurrence of die lip stain at production is quite little and thus it has good surface property.
    Type: Grant
    Filed: September 2, 1992
    Date of Patent: February 3, 1998
    Assignee: Mitsubishi Paper Mills Limited
    Inventors: Touru Noda, Massashi Kubbota, Akira Uno
  • Patent number: 5709986
    Abstract: A photographic element having a support, at least one light-sensitive silver halide layer and a layer containing matte bead particles, the matte bead particles being a copolymer of a styrenic monomer or acrylic acid or methacrylic acid or an acrylic acid ester or a methacrylic acid ester or mixture thereof where the ester group contains up to 6 carbon atoms and an acrylic or methacrylic acid ester where the ester group has from 10 to 22 carbon atoms, each matte bead particle being surrounded by colloidal size particles of a suspension stabilizing agent.
    Type: Grant
    Filed: January 30, 1996
    Date of Patent: January 20, 1998
    Assignee: Eastman Kodak Company
    Inventors: Dennis Edward Smith, John Leonard Muehlbauer, Yongcai Wang
  • Patent number: 5707791
    Abstract: A silver halide photographic light-sensitive material is disclosed, comprising a polyester support having on one side thereof a silver halide emulsion layer, and on the other side of the support, a layer containing a polyester resin or polyurethane resin and further thereon a magnetic recording layer.
    Type: Grant
    Filed: January 16, 1996
    Date of Patent: January 13, 1998
    Assignee: Konica Corporation
    Inventors: Mineko Ito, Koichi Saito, Chieko Uehara
  • Patent number: 5705329
    Abstract: Disclosed is a silver halide photographic light-sensitive material comprising a support provided thereon, a layer selected from the group consisting of a first layer and a second layer, and a silver halide emulsion layer in this order, wherein said support comprises a syndiotactic styrene polymer or a copolymer thereof, and a first layer comprises a polymer composition composed of a polyester component with a styrene polymer component, and a second layer comprises a diene type polymer.
    Type: Grant
    Filed: April 7, 1997
    Date of Patent: January 6, 1998
    Assignee: Konica Corporation
    Inventors: Akihisa Nakajima, Koichi Nagayasu
  • Patent number: 5705325
    Abstract: A silver halide photographic light sensitive material comprising a support and at least two silver halide emulsion layers on each surface of the support, wherein 50% or more of said support are comprised of a syndiotactic polystyrene and a silver to binder ratio of the silver halide emulsion layer closest to said support is lower than that of another silver halide emulsion layer on each side of said support.
    Type: Grant
    Filed: September 23, 1996
    Date of Patent: January 6, 1998
    Assignee: Konica Corporation
    Inventor: Yuji Hosoi
  • Patent number: 5700630
    Abstract: A silver halide photographic material is disclosed which comprises a support having thereon at least one light-sensitive silver halide emulsion layer containing silver halide grains, a surface protective layer as an uppermost layer, and a hydrophilic colloid layer other than said at least one light-sensitive silver halide emulsion layer and said surface protective layer, wherein the sum of the silver amount contained in each of said at least one light-sensitive silver halide emulsion layer is from 0.8 g/m.sup.2 to 1.5 g/m.sup.
    Type: Grant
    Filed: March 1, 1996
    Date of Patent: December 23, 1997
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Rikio Inoue, Sumito Yamada
  • Patent number: 5698385
    Abstract: The silver halide photosensitive material of the invention comprises a support, at least one photosensitive silver halide emulsion layer provided on the support and a protective layer provided on the photosensitive silver halide emulsion layer. The protective layer contains agglomerate particles each of which is formed from plural primary particles having a particle diameter smaller than the thickness of the protective layer. For example, agglomerate particles having a mean particle diameter of 0.2 to 30 .mu.m composed of primary particles having a mean particle diameter of 0.01 to 10 .mu.m are contained in the protective layer having a thickness of 0.1 to 10 .mu.m. By the use of such agglomerate particles as matting agent particles, pin-holes caused by sinking of the matting agent can be inhibited and the Bekk second can be made not longer than 2,000 seconds. Moreover, this matting agent has good affinity for gelatin and is almost free from powder-dropping.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: December 16, 1997
    Assignees: Soken Chemical & Engineering Co., Ltd., Fuji Photo Film Co., Ltd.
    Inventors: Noriyuki Ousaka, Yasuhiro Okada, Satoshi Kanetake, Kunio Ishigaki
  • Patent number: 5695919
    Abstract: Imaging elements, such as photographic films and papers, are comprised of a support, an image-forming layer and at least one auxiliary layer containing solvent-dispersible polymer particles. The auxiliary layer having been formed from a coating solution comprising a continuous liquid organic medium having dispersed therein lubricant impregnated core/shell polymer particles, the polymer particles comprising a core portion which is insoluble in the organic medium and a shell portion which has an affinity for both the core portion and the organic medium.
    Type: Grant
    Filed: August 12, 1996
    Date of Patent: December 9, 1997
    Assignee: Eastman Kodak Company
    Inventors: Yongcai Wang, Charles Chester Anderson, James Lee Bello, Mario Dennis DeLaura
  • Patent number: 5693461
    Abstract: This invention describes the composition and method of preparation of heteroflocculated packet emulsion clusters containing a light sensitive and selectively photosensitized silver halide emulsion particles and particles of photographic agents such as dye-forming coupler particles. The silver halide emulsion particles are associated with a layer of adsorbed peptizing gelatin with an isoelectric pH of P.sub.1 and the grafted gelatin of the gelatin-grafted-polymer particles comprising the photographic agent has an isoelectric pH of P.sub.2 such that P.sub.1 is different than P.sub.2. At least one of the peptizing and grafted gelatins is an isoing gelatin which is sufficiently derivatized to remove ionic groups thereof such that approaching the isoelectric pH in an aqueous solution of the isoing gelatin causes massive heteroflocculation.
    Type: Grant
    Filed: March 21, 1995
    Date of Patent: December 2, 1997
    Assignee: Eastman Kodak Company
    Inventors: Pranab Bagchi, Tienteh Chen, Thomas Joseph Dannhauser, John Derek Lewis, Mark Anthony Whitson
  • Patent number: 5681688
    Abstract: A silver halide photographic light-sensitive material is disclosed. The light-sensitive material comprises a support and a light-sensitive silver halide emulsion layer provided on the support, and the silver halide emulsion layer or a non-light-sensitive hydrophilic colloid layer provided on the support contains a polymer latex which is stabilized with gelatin and has a pH value of from 6.5 to 10.0 at the time of addition to a coating solution for forming the emulsion layer or the hydrophilic colloid layer.
    Type: Grant
    Filed: December 28, 1994
    Date of Patent: October 28, 1997
    Assignee: Konica Corporation
    Inventor: Yasuhiko Takamuki
  • Patent number: 5677116
    Abstract: The invention provides a photographic element comprising a polyester support bearing a light-sensitive silver halide photographic emulsion layer, the support having adjacent thereto a polymer-containing subbing layer, the subbing layer having adjacent thereto a layer comprising a hydrophilic binder containing dispersed droplets of a high boiling hydrophobic organic liquid, said liquid having a logarithm of its octanol/water partition coefficient (log P) value greater than 7.7. The invention also includes a process for preparing a photographic element of the invention and a process for forming an image in an element of the invention. The invention further includes a photographic element comprising a polyester support bearing a hydrophilic layer containing an antihalation agent, such as elemental silver, with or without an intervening subbing layer.
    Type: Grant
    Filed: November 19, 1996
    Date of Patent: October 14, 1997
    Assignee: Eastman Kodak Company
    Inventors: Paul Leo Zengerle, John Brian Rieger, John William Boettcher, Richard Allen Carmack
  • Patent number: 5674654
    Abstract: Imaging element, such as photographic electrostatographic thermal imaging elements are comprised of a support, an imaging-forming layer, and a transparent electrically-conductive layer which includes an effective amount of polypyrrole/poly(styrene sulfonic acid). In a preferred embodiment, the polypyrrole/poly(styrene sulfonic acid) is dispersed in a binder.
    Type: Grant
    Filed: September 19, 1996
    Date of Patent: October 7, 1997
    Assignee: Eastman Kodak Company
    Inventors: Nicholas Zumbulyadis, William Patrick McKenna, Brian Kenneth Brady
  • Patent number: 5618661
    Abstract: A method for processing a silver halide photographic light-sensitive material by an automatic processor is disclosed. The processing method comprises the steps of (1) developing a silver halide photographic light-sensitive material with a developer being in a developing tank of said automatic processor while replenishing a developer replenisher in a rate of from 50 ml to 330 ml per square meter of the light-sensitive material processed and (2) fixing said developed silver halide photographic light-sensitive material with a fixer being in a fixing tank of said automatic processor while replenishing a fixer replenisher in a rate of from 50 ml to 330 ml per square meter of the light-sensitive material. The light-sensitive material comprises a support and at least one silver halide emulsion layer provided on a surface of a support which is a stretched film composed of a styrene copolymer having a syndiotactic structure or a composition containing said styrene copolymer.
    Type: Grant
    Filed: October 31, 1995
    Date of Patent: April 8, 1997
    Assignee: Konica Corporation
    Inventor: Takeshi Sampei
  • Patent number: 5597680
    Abstract: Imaging elements, such as photographic films and papers, are comprised of a support, an image-forming layer and at least one auxiliary layer containing solvent-dispersible polymer particles. The auxiliary layer is coated from a dispersion of core/shell polymer particles in a liquid organic medium, the polymer particles comprising a core portion which is insoluble in the organic medium and a shell portion which has an affinity for both the core portion and the organic medium.
    Type: Grant
    Filed: December 5, 1995
    Date of Patent: January 28, 1997
    Assignee: Eastman Kodak Company
    Inventors: Yongcai Wang, Charles C. Anderson, James L. Bello, Mario D. DeLaura
  • Patent number: 5597681
    Abstract: Imaging elements, such as photographic films and papers, are comprised of a support, an image-forming layer, an electrically-conductive layer and a protective overcoat layer that overlies the electrically-conductive layer. The protective overcoat layer is coated from a dispersion of core/shell polymer particles in a liquid organic medium, the polymer particles comprising a core portion which is insoluble in the organic medium and a shell portion which has an affinity for both the core portion and the organic medium.
    Type: Grant
    Filed: December 5, 1995
    Date of Patent: January 28, 1997
    Assignee: Eastman Kodak Company
    Inventors: Charles C. Anderson, Yongcai Wang, Mario D. DeLaura, James L. Bello
  • Patent number: 5595862
    Abstract: In accordance with the present invention, a photographic element comprises a support, at least one light-sensitive layer, and a protective overcoat comprising a hydrophilic binder and permanent matte particles, the permanent matte particles comprising a polymer of methyl methacrylate and having a size distribution of a first and a second mode, with the first mode being composed of particles having a mean particle size of from 0.2 to 1.2 micrometers in a coating weight of from 10 to 200 mg/m.sup.2 and the second mode having a mean particle size of from 1.5 to 10 micrometers in a coating weight of from 5 to 150 mg/m.sup.2, the total coating weight of the particle of the first and the second modes being greater than 100 mg/m.sup.2.
    Type: Grant
    Filed: September 25, 1995
    Date of Patent: January 21, 1997
    Assignee: Eastman Kodak Company
    Inventors: Alfred B. Fant, Yongcai Wang, Dennis E. Smith, Melvin M. Kestner, Rudolf D. Steinmetz
  • Patent number: 5582963
    Abstract: A silver halide photographic material comprises a plastic support, a silver halide emulsion layer and an antistatic backing layer. A process for the preparation of the photographic material comprises the steps of: coating a silver halide emulsion on one side of the support to form the silver halide emulsion layer; and coating an aqueous coating solution on the other side of the support to form the antistatic backing layer. The coating solution contains electroconductive particles, a binder and a specific nonionic surface active agent represented by the formula (Ia), (Ib), (II), (III) or (IV).
    Type: Grant
    Filed: October 30, 1995
    Date of Patent: December 10, 1996
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Yoshihisa Tsukada
  • Patent number: 5582964
    Abstract: A silver halide photographic material favorably employable in combination with a presensitized plate comprisies a plastic support comprising a syndiotactic styrenic polymer and at least one silver halide emulsion layer, wherein the support shows a transmittance at 350 nm of not less than 70%, said transmittance being measured on the support of 100 .mu.m thick.
    Type: Grant
    Filed: April 14, 1995
    Date of Patent: December 10, 1996
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Kiyokazu Hashimoto, Akira Hatakeyama
  • Patent number: 5580706
    Abstract: Disclosed is a method for processing a silver halide photographic material, having on one side of a support a hydrophobic polymer layer as the outermost layer and on the side opposite an emulsion layer, by means of an automatic developing apparatus. The apparatus has a drying operation part which is equipped with two or more hot rollers arranged so that the silver halide photographic material may be wrapped partly around each of the hot rollers in turn and the contact between the rollers and the material may alternate between the front surface and the back surface of the photographic material, whereby the moisture in the photographic material evaporates from the surface areas when they are not in contact with the hot rollers. This method results in improvements in the drying characteristics of the photographic material and the transportation characteristics of the automatic developing apparatus.
    Type: Grant
    Filed: July 6, 1995
    Date of Patent: December 3, 1996
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Kunio Ishigaki
  • Patent number: 5576152
    Abstract: The invention relates to a method of forming a photographic paper comprising applying to a base paper a polyvinyl alcohol solution of low molecular weight, said solution containing said polyvinyl alcohol in an amount of greater than 15 percent by weight.
    Type: Grant
    Filed: August 26, 1994
    Date of Patent: November 19, 1996
    Assignee: Eastman Kodak Company
    Inventors: Ian M. Hodge, David J. Lacz, Todd R. Skochdopole, Anita M. Fees
  • Patent number: 5569576
    Abstract: A photographic material is disclosed containing on at least one side of the support at least one light-sensitive silver halide emulsion layer characterised in that the light-sensitive layer and/or at least one non-light sensitive layer in water-permeable relationship with the light-sensitive layer comprises at least one compound having the general formula (I)R[O--CH.sub.2 --CH.sub.2 --S--(LINK.sup.1 --S).sub.x --CH.sub.2 --CH.sub.2 --O--(LINK.sup.2)].sub.y --OR (I)wherein each of LINK.sup.1 and LINK.sup.2 which may be the same or different represents a divalent linking group; R represents H, a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group or an acyl group; x is 0, 1 or 2, and y varies from 2 to 20.
    Type: Grant
    Filed: February 27, 1995
    Date of Patent: October 29, 1996
    Assignee: AGFA-Gevaert, N.V.
    Inventors: Jean-Marie Dewanckele, Geert Vercruysse, Ralf B uscher
  • Patent number: 5561034
    Abstract: A photographic material is provided comprising a support, a subbing layer, at least one hydrophilic gelatinous silver halide emulsion layer, optionally one or more other hydrophilic gelatinous layer(s) and a core-shell latex polymer, comprising a core (co)polymer and a shell (co)polymer characterized in that(i) said core-shell latex is present in at least one of said hydrophilic gelatinous layers,(ii) said shell (co)polymer comprises moieties A derived from at least one ethylenically unsaturated monomer having a reactive methylene group and(iii) said moieties A present in said shell (co)polymer make up between 1 and 30% by weight of all moieties present in both said core and said shell (co)polymer and(iv) said moieties A present in said shell (co)polymer make up between 2 and 50% of all moieties present in said shell (co)polymer.The material shows both high dimensional stability and high scratch resistance.
    Type: Grant
    Filed: July 17, 1995
    Date of Patent: October 1, 1996
    Assignee: Agfa-Gevaert, N.V.
    Inventors: Guido Desie, Michael M uller, Stefaan Lingier
  • Patent number: 5556738
    Abstract: A silver halide photographic element with enhanced sensitivity and improved pressure resistance is disclosed, comprising a support having, on at least one side thereof, hydrophilic colloidal layers including a light-sensitive silver halide emulsion layer and a nonlight-sensitive hydrophilic colloidal layer, wherein the nonlight-sensitive layer contains organic material-aggregation particles; and gelatin contained in the total hydrophilic colloidal layers provided on one side of the support amounts to a range of 1.3 to 2.5 g per m.sup.2.
    Type: Grant
    Filed: July 13, 1995
    Date of Patent: September 17, 1996
    Assignee: Konica Corporation
    Inventors: Yasuhiko Takamuki, Ken Nagami
  • Patent number: 5554496
    Abstract: A silver halide photographic material comprises a silver halide emulsion layer and an anticurl backing layer provided on a support. A surface backing layer is further provided on the anticurl backing layer. The surface backing layer comprises a hydrophobic polymer. The hydrophobic polymer has a repeating unit represented by the formula (I): ##STR1## in which R.sup.1 is hydrogen or an alkyl group; X is --COO--, --CONR.sup.3 -- or phenylene; R.sup.3 is hydrogen or an alkyl group; R.sup.2 is a single bond or an alkylene group; L is a single bond or a divalent linking group, --OCO--, --NHCOO--, --OCOCH.sub.2 --, --NHCONH--, --NHCO--, --NH-- or --O--; and Cy is an alicyclic group consisting of a monocyclic ring and having three to sixteen carbon atoms.
    Type: Grant
    Filed: March 2, 1995
    Date of Patent: September 10, 1996
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Kentaro Shiratsuchi, Satoru Toda, Tsukasa Yamada
  • Patent number: 5547820
    Abstract: A silver halide photographic material comprises a silver halide emulsion layer and a surface backing layer provided on a support. The surface backing layer contains an aliphatic hydrocarbon compound represented by the formula (I) or (II)C.sub.n1 H.sub.m1 --X.sup.1 --C.sub.n2 H.sub.m2 (I)C.sub.n3 H.sub.m3 --X.sup.2 --C.sub.n4 H.sub.m4 --X.sup.3 --C.sub.n5 H.sub.m5 (II)in which each of X.sup.1, X.sup.2 and X.sup.3 is a divalent linking group selected from --CO--, --O--, --S--, --NR.sup.1 --, --SO--, --SO.sub.2 -- and a combination thereof; R.sup.1 is hydrogen or an aliphatic group having 1 to 8 carbon atoms; each of n1, n2, n3 and n5 is 4 to 100; each of m1, m2, m3 and m5 is 9 to 201; n4 is 3 to 100; m4 is 6 to 200; n1+n2 is 25 to 120; n3+n4+n5 is 30 to 150; at least one hydrogen atom of the groups C.sub.n1 H.sub.m1 --, --C.sub.n2 H.sub.m2, C.sub.n3 H.sub.m3 --, --C.sub.n4 H.sub.m4 -- and --C.sub.n5 H.sub.m5 is substituted with a polar group selected from --OH, --COOM.sup.1, --NH.sub.2, --N.sup.+ R.sup.2 R.sup.
    Type: Grant
    Filed: December 23, 1994
    Date of Patent: August 20, 1996
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Hajime Miyamoto
  • Patent number: 5547822
    Abstract: Disclosed is a process for producing a titanium dioxide pigment used for a resin-coated paper type photographic support, comprising the following steps:(a) a step of adding at least one alkaline earth metal compound in an amount of 0.01-2.0% by weight in terms of a metal oxide based on the titanium dioxide before calcination step and(b) an acid-washing step of washing the titanium dioxide at acidic state after the calcination step and before a step of surface treatment with a hydrated metal oxide,and wherein particle size of the titanium dioxide pigment is 0.110-0.150 .mu.m shown by number-average diameter obtained by measuring the diameter in a certain direction using an electron microscope. A photographic support which comprises the above titanium dioxide pigment is also disclosed. Occurrence of die lip stain and microgrit are substantially reduced in the photographic support and a photographic material made thereof exhibits improved image sharpness.
    Type: Grant
    Filed: August 4, 1994
    Date of Patent: August 20, 1996
    Assignees: Mitsubishi Paper Mills, Tohkam Products
    Inventors: Touru Noda, Akira Uno, Kazuyoshi Muraoka
  • Patent number: 5525676
    Abstract: A thermal treatment process uses far infrared rays to heat an applied primer composition which has an excellent bonding ability to materials such as polyethylene, polypropylene and synthetic rubbers and is easily bonded to functional coatings. A composite layer of a coating and the primer composition having a function of addition is formed on the surface of these materials by coating or the like, and the composite layer is then subjected to a thermal treatment using far infrared rays. A composition is employed which is suitable for such uses wherein a polymer of an unsaturated dicarboxylic acid and a polyolefin or a chlorine denatured product thereof is used as a main component and a chlorosulfonated polyethylene is applied to improve heat resistance.
    Type: Grant
    Filed: September 28, 1994
    Date of Patent: June 11, 1996
    Assignee: Chugoku Marine Paints, Ltd.
    Inventors: Minoru Kitayama, Harumi Morifusa, Katsuni Kondoh
  • Patent number: 5494738
    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 and having at least on one side thereof an antistatic layer containing for at least 70% by weight colloidal silica having an average particle size not larger than 10 nm and a surface area of at least 300 m.sup.2 per gram, the colloidal silica being present in said antistatic layer at a coverage of at least 50 mg per m.sup.2, characterized in that said antistatic layer is coated with a covering layer having a smaller sticking power to a gelatin layer than said silica containing layer, said covering layer containing at least 50% by weight of a water-insoluble synthetic polymer being applied at a dry coverage in the range of 0.01 to 2 g/m.sup.2.
    Type: Grant
    Filed: February 21, 1991
    Date of Patent: February 27, 1996
    Assignee: Agfa-Gevaert, N.V.
    Inventors: Etienne A. Van Thillo, Bavo A. Muys
  • Patent number: 5480767
    Abstract: Disclosed is a silver halide color photographic light-sensitive material comprising a reflective support comprising polyolefin resin coated paper and provided on one side thereof with photographic component layers comprising a hydrophilic colloidal layer containing a white pigment, a non-sensitive hydrophilic colloidal layer, and a silver halide emulsion layer, wherein at least one of said photographic component layers contains an oil-soluble dye or a colored pigment, either of which is not substantially incapable of being decolorized on a photographic-processing.
    Type: Grant
    Filed: November 14, 1994
    Date of Patent: January 2, 1996
    Assignee: Konica Corporation
    Inventors: Yasuo Tosaka, Yoshiyuki Nonaka, Keiichi Hoshino
  • Patent number: 5478710
    Abstract: New types of polymer latices and their use in photographic materials are disclosed. They are obtained by subjecting to radical emulsion polymerisation one or more radical-polymerisable monomers, whose emulsifier-free homopolymers or copolymers possess a glass transition temperature below 65.degree. C., preferably below 30.degree. C., in the presence of a water-soluble polymer of a particular chemical formula.These new types of latices are preferably used in graphic arts contact materials, e.g. daylight materials. They can be used in relative high amounts thus improving dimensional stability without deteriorating the scratch resistance too strongly.A preferred radical-polymerisable monomer mixture comprises n.-butyl acrylate, methyl methacrylate and acrylic acid.
    Type: Grant
    Filed: August 12, 1994
    Date of Patent: December 26, 1995
    Assignee: AGFA-Gevaert, N.V.
    Inventors: Michael Muller, Daniel M. Timmerman, Guido V. Desie, Stefaan F. Lingier, Gunter Stackmann
  • Patent number: 5476708
    Abstract: Photographic base paper (10) has a face side waterproof coating which is a co-extruded layer structure of at least a pigmented core layer (P) and top surface layer (E) of polyethylene. The thickness of layer (E) is no more than 12 .mu.m. The pigment content in the face side coating is at least 2 gm.sup.-2 and it is distributed such that the proportion by weight of pigment in the core layer is at least 1.75 times as great as the proportion by weight of pigment in the top surface layer. For optimum photodefinition (image sharpness) the top surface layer should be free of pigment, but as thin (1.5 to 3 .mu.m) as possible. The pigment is preferably TiO.sub.2.
    Type: Grant
    Filed: July 6, 1993
    Date of Patent: December 19, 1995
    Assignee: Glory Mill Papers Limited
    Inventors: Roger J. Reed, Paul Dunk, Christopher Cusick
  • Patent number: 5466536
    Abstract: A photographic support material has a reverse side layer which includes a polymer having a film formation temperature which does not exceed 70.degree. C., and a conductive material. The polymer may be a mixture of polymers or copolymers of styrene, alkylstyrene, (meth)acrylic acid and (meth)acrylic acid alkylester. The conductive material may be an alkali salt of a crosslinkable polysulfonic or polystyrene sulfonic acid or a coated or uncoated metal oxide from the group of metals of the 2nd to 4th main or sub groups, and may also contain a polyfunctional aziridin. The reverse side layer can be printed with thermal printers with only slight absorption of dirt and discoloration from developer baths, and has good adhesion of adhesive tape, good printability with conventional printers, good resistance to abrasion and baths, and a good antistatic properties.
    Type: Grant
    Filed: March 8, 1994
    Date of Patent: November 14, 1995
    Assignee: Felix Schoeller jr Papierfabriken GmbH & Co. KG
    Inventors: Hans-Ulrich Berner, Rolf Ebisch, Eckehard Saverin, Udo Tyrakowski
  • Patent number: 5466541
    Abstract: A coating composition suitable for forming an adhesive primer layer on a hydrophobic polyester resin support, wherein said coating composition essentially consists of (an) addition polymerizable monomer or mixture of such monomers having dissolved therein at least one of the polymers (i) and/or (ii), wherein:(i) is a linear copolyester of isophthalic acid and at least one other dibasic carboxylic acid with an aliphatic diol, said copolyester being soluble in methyl methacrylate for at least 10 g per 100 ml at 20.degree. C., and/or(ii) is a linear polyester of terephthalic acid and/or isophthalic acid with an oxyalkylated bisphenol, said polyester being soluble in methyl methacrylate for at least 10 g per 100 ml at 20.degree. C., and wherein said composition comprises said monomer(s) acting as solvent(s) for polymers (i) and/or (ii) in a 20 to 70% by weight ratio with respect to the totality of said polymer(s) and monomer(s).
    Type: Grant
    Filed: June 3, 1992
    Date of Patent: November 14, 1995
    Assignee: AGFA-Gevaert. N.V.
    Inventors: Jan E. Van Havenbergh, Jozef R. Aertbelien, Philip Dooms
  • Patent number: 5460931
    Abstract: A light-sensitive silver halide photographic material is disclosed, comprising a reflective support comprising a resin layer-coated base paper and having thereon a silver halide emulsion layer , wherein a hydrophilic colloid layer containing a white pigment is provided between the resin layer and the silver halide emulsion layer; the resin layer having an uneven surface; and a Wiener spectrum of the silver halide photographic material satisfying the following relation,1.1<(WS2) / (WS1)<2.0wherein WS1 and WS2 are average intensities of the spectrum within a spatial frequency range of 2 to 3 mm.sup.-1 and 10 to 20 mm.sup.-1, respectively.
    Type: Grant
    Filed: November 14, 1994
    Date of Patent: October 24, 1995
    Assignee: Konica Corporation
    Inventors: Shigeo Tanaka, Tsuyoshi Ikeda
  • Patent number: 5457016
    Abstract: A photographic support material has a back coating comprising a blend of a polypropylene and low density polyethylene.
    Type: Grant
    Filed: August 30, 1993
    Date of Patent: October 10, 1995
    Assignee: Felix Schoeller Jr. Papierfabriken GmbH & Co. KG
    Inventor: Ralf-Burkhard Dethlefs
  • Patent number: 5455154
    Abstract: A photographic silver halide material which has at least one light-sensitive layer and contains in at least one layer a compound corresponding to formula (I) in a quantity of at least 10 mg/m.sup.2 : ##STR1## wherein k stands for 50 to 99% by weight,l stands for 0 to 49% by weight,m stands for 1 to 40% by weight,j stands for 0 to 49% by weight,M denotes a comonomer incorporated by polymerisation,M.sub.1 denotes ##STR2## M.sub.2 denotes ##STR3## R.sub.1 and R.sub.2 denote hydrogen or alkyl, R.sub.3 denotes an acidic group, andB denotes a chemical bond or a bridging member and which is hardened with a rapid or an instant hardener,is distinguished by improved wet scratch resistance and stability in storage.
    Type: Grant
    Filed: May 23, 1994
    Date of Patent: October 3, 1995
    Assignee: Agfa Gevaert, AG
    Inventors: Gunter Helling, Jean-Marie Dewanckele
  • Patent number: 5453351
    Abstract: A silver halide photographic light-sensitive material is disclosed. The light-sensitive material comprises a support comprising a substrate and an electron beam-cured resin layer provided on a surface of the substrate, and a hydrophilic colloid layer provided on said resin layer. The resin layer comprises an electron beam-curable composition cured by electron beam radiation and a white pigment in an amount of 20% to 70% by weight. The hydrophilic colloid layer includes at least one silver halide emulsion layer and optionally a non-light-sensitive hydrophilic colloid layer, and contains gelatin and an oil component. In the light-sensitive material, the curling degree of the support R m.sup.-1, the coating amount of the gelatin G g/m.sup.2, and the coating amount of the oil component Oi g/m.sup.2 are each -8.ltoreq.R.ltoreq.-1, 2.ltoreq.G.ltoreq.20 and 0.ltoreq.Oi.ltoreq.20, respectively, and a value Y calculated by the following equation is -3.ltoreq.Y.ltoreq.5;Y=0.9G-0.
    Type: Grant
    Filed: August 26, 1994
    Date of Patent: September 26, 1995
    Assignee: Konica Corporation
    Inventors: Eiichi Ueda, Masahito Takada
  • Patent number: 5441860
    Abstract: 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: Grant
    Filed: February 28, 1994
    Date of Patent: August 15, 1995
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Brunella Fornasari, Giuseppe Bussi, Renzo Torterolo
  • Patent number: 5441854
    Abstract: A process is disclosed for forming a color photographic image comprising the steps of:(a) providing an integral element comprising one and only one dimensionally stable layer comprising a reflection base or transparent base coating support, and coated thereon in reactive association an imaging layer comprising radiation sensitive silver halide, a diffusible dye forming layer comprising a diffusible dye forming compound, and a barrier layer overlaying said diffusible dye forming layer;(b) exposing this integral element to actinic radiation(c) processing this integral element by contacting this element to an external bath containing compounds selected from the group consisting of color developer compounds, compounds which activate the release of incorporated color developers, and compounds which activate development by incorporated dye developers; and(d) washing this integral element to remove compounds imbibed in step (c). The diffusible dye forming layer is the same or different than the imaging layer.
    Type: Grant
    Filed: July 18, 1994
    Date of Patent: August 15, 1995
    Assignee: Eastman Kodak Company
    Inventors: John Texter, Wayne A. Bowman, Glenn T. Pearce
  • Patent number: 5434039
    Abstract: The support member for photographic printing paper of the present invention has a coating layer which comprises white pigment and hydrophobic binder soluble in an organic solvent on a base material, whereby voids are formed in said coating layer. The support member increases whiteness degree and gives an image with excellent sharpness.
    Type: Grant
    Filed: July 28, 1994
    Date of Patent: July 18, 1995
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Kozo Nagata, Yasuhiro Ogata, Tetsuro Fuchizawa
  • Patent number: 5429916
    Abstract: A silver halide color photographic photosensitive material comprises a reflective support having thereon at least one photosensitive silver halide emulsion layer. The reflective support comprises a base paper and two or more water-proof resin layers laminated on one surface of the base paper at the side to be coated with the photosensitive emulsion. The water-proof resin layers have different contents of a white pigment. The base paper has pH of from 5 to 9. The silver halide emulsion layer contains silver halide emulsion having a silver chloride content of 95% by moles or higher and being sensitized with selenium, tellurium, or gold.
    Type: Grant
    Filed: June 2, 1994
    Date of Patent: July 4, 1995
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Naoto Ohshima
  • Patent number: 5426020
    Abstract: This invention describes the use of surfactants of the following types:Type A--Surfactant comprising 6 to 22 carbon atom hydrophobic tail with one or more attached hydrophilic chains comprising at least 8 oxyethylene and/or glycidyl ether groups that may or may not be terminated with a negative charge such as a sulfate group,Type B--Block oligomeric surfactants comprising hydrophobic polyoxypropylene blocks (A) and hydrophilic polyoxyethylene blocks (B) joined in the manner of A--B--A, B--A--B, A--B, (A--B.sub.n .tbd.G.tbd.(B--A).sub.n, or (B--A).sub.n .tbd.G(A--B).sub.n, where G is a connective organic moiety and n is between 1 and 3,Type C--Sugar surfactants, comprising between one to three 6 to 22 carbon atom hydrophobic tail with one or more attached hydrophilic mono or oligosaccharidic chains that may or may not be terminated by a negatively charged group such as a sulfate group.
    Type: Grant
    Filed: August 31, 1993
    Date of Patent: June 20, 1995
    Assignee: Eastman Kodak Company
    Inventors: Pranab Bagchi, Melvin M. Kestner
  • Patent number: 5422235
    Abstract: 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: Grant
    Filed: August 17, 1993
    Date of Patent: June 6, 1995
    Assignee: Eastman Kodak Company
    Inventors: John W. Chapman, Andrew F. Sierakowski, Robyn A. Whittle
  • Patent number: 5422234
    Abstract: Thermally processable imaging elements in which the image is formed by imagewise heating or by imagewise exposure to light followed by uniform heating include an adhesive interlayer interposed between the imaging layer and a protective overcoat layer. The adhesive interlayer, which is comprised of a polymer having epoxy functionality, strongly bonds the overcoat layer to the imaging layer.
    Type: Grant
    Filed: March 16, 1994
    Date of Patent: June 6, 1995
    Assignee: Eastman Kodak Company
    Inventors: Charles L. Bauer, Wayne A. Bowman
  • Patent number: 5418120
    Abstract: Thermally processable imaging elements in which the image is formed by imagewise heating or by imagewise exposure to light followed by uniform heating include an adhesive interlayer interposed between the imaging layer and a protective overcoat layer. The adhesive interlayer, which is comprised of a polyalkoxysilane, strongly bonds the overcoat layer to the imaging layer.
    Type: Grant
    Filed: March 16, 1994
    Date of Patent: May 23, 1995
    Assignee: Eastman Kodak Company
    Inventors: Charles L. Bauer, Wayne A. Bowman