Polyester Or Polycarbonate Patents (Class 430/533)
  • Patent number: 6344310
    Abstract: The invention relates to a photographic element consisting essentially of a transparent biaxially oriented polymer sheet, at least one emulsion adhering layer, and at least one light sensitive silver halide grain containing emulsion layer adhered to said emulsion adhering layer, wherein said polymer sheet is less than 76 micrometers.
    Type: Grant
    Filed: November 20, 1998
    Date of Patent: February 5, 2002
    Assignee: Eastman Kodak Company
    Inventors: Robert P. Bourdelais, Peter T. Aylward, Thaddeus S. Gula, Alphonse D. Camp
  • Publication number: 20020012889
    Abstract: A surface treatment method for enhancing hydrophobicity of the surface of a film support is disclosed, comprising subjecting at least one side of the surface to a gas-discharge plasma treatment in a gas phase atmosphere comprising (a) an inert gas comprising argon or helium and (b) a reactive gas comprising a hydrocarbon gas or fluorinated hydrocarbon gas. There is also disclosed a photothermographic material by the use of the support having been subjected to the surface treatment.
    Type: Application
    Filed: March 6, 2001
    Publication date: January 31, 2002
    Inventors: Kiyoshi Oishi, Kazuhiro Fukuda
  • Publication number: 20020009680
    Abstract: The present invention can relate to an imaging element including a support, an image-forming layer superposed on the support, and an outermost scratch resistant antistatic layer superposed on the support. The scratch resistant layer may include a polymer having a modulus greater than 100 MPa measured at 20° C., a filler particle with the proviso that the filler particle is not an electronically conductive crystalline metal oxide or a compound oxide thereof, and an electronically conducting polymer. The volume ratio of the polymer to the filler particle may be between 70:30 and 40:60 and the electronically conducting polymer can be present at a weight concentration based on a total dried weight of the scratch resistant layer of between 1 and 10 weight percent.
    Type: Application
    Filed: December 1, 2000
    Publication date: January 24, 2002
    Applicant: Eastman Kodak Company
    Inventors: Dabasis Majumdar, Charles Anderson
  • Patent number: 6329113
    Abstract: The invention relates to an imaging member comprising a base wherein said base comprises at least one layer of heat shrinkable sheet and at least one strength layer.
    Type: Grant
    Filed: June 5, 2000
    Date of Patent: December 11, 2001
    Assignee: Eastman Kodak Company
    Inventors: Robert P. Bourdelais, Peter T. Aylward, Alphonse D. Camp, Geoffrey Mruk
  • Patent number: 6316172
    Abstract: There is disclosed a heat-developable photographic light-sensitive material, wherein the degree of warp at the edge portion of each of four sides of the light-sensitive material after heat development is in the range of from 0 mm/50 cm to 4 mm/50 cm. Further, there is disclosed a heat-development method thereof. The heat-developable photographic light-sensitive material can exhibits such an excellent effect that the planar property after a heat development is good, and consequently the problem of printing blur does not occur, not only in ordinary use but also even in use as a light-sensitive material for printing. Further, the heat-development method can exerts an excellent effect as a method for maintaining excellent planar property and consequently restraining the occurrence of the printing blur problem, when the heat-developable photographic light-sensitive material is subjected to heat development.
    Type: Grant
    Filed: September 23, 1999
    Date of Patent: November 13, 2001
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Kiyokazu Hashimoto
  • Publication number: 20010038980
    Abstract: A photothermographic material is disclosed, comprising a support, an image forming layer containing organic silver salt grains, light sensitive silver halide grains and a reducing agent and a surface protective layer on the image forming layer, wherein the element composition on the surface of image forming layer side, obtained by X-ray photoelectron spectroscopy exhibits a ratio of the number of carbon elements to the number of oxygen elements of not more than 9.
    Type: Application
    Filed: March 30, 2001
    Publication date: November 8, 2001
    Inventor: Kiyokazu Morita
  • Patent number: 6312880
    Abstract: The invention relates to a multilayer photographic element comprising a reflective support wherein the color record 1 adjacent to the support comprises at least one light sensitive layer and a non-light sensitive dye-forming interlayer; and wherein color record 2 above said color record 1 comprises at least one light sensitive layer and at least two non-light sensitive dye-forming interlayers and wherein color record 3 above said color record 2 comprises at least one light sensitive layer and a non-light sensitive dye-forming interlayer; and a top overcoat layer comprising gelatin and ultraviolet absorbing material; and wherein each interlayer is substantially scavenger free, and color records 1, 2, and 3 comprise silver halide grains comprising greater than 90% silver chloride, and wherein the reciprocity characteristics of the silver halide grains are such that for a separation exposure of 1 microsecond and 0.4 sec, at least one color record develops to a density of at least 2.
    Type: Grant
    Filed: December 27, 1999
    Date of Patent: November 6, 2001
    Assignee: Eastman Kodak Company
    Inventors: Michael R. Roberts, Hwei-Ling Yau, Glenn M. Brown
  • Patent number: 6306568
    Abstract: A photographic element comprising a polyester support; an antistatic layer; and a transparent magnetic layer comprising a cellulose binder, ferromagnetic particles and a blocked isocyanate.
    Type: Grant
    Filed: December 29, 2000
    Date of Patent: October 23, 2001
    Assignee: Eastman Kodak Company
    Inventors: Brian K. Brady, Charles L. Bauer, Dennis J. Eichorst
  • Patent number: 6303281
    Abstract: A silver halide photographic element comprises a support having thereon at least one light-sensitive silver halide emulsion layer and a light-insensitive protective layer, the light-insensitive protective layer comprising an ultraviolet absorbing layer closer to the support and an outermost protective layer, the ultraviolet absorbing layer comprising an ultraviolet aborbing dye, a high boiling organic solvent, and a hydrophilic binder, the outermost protective layer comprising insoluble matte particles having a mean particle size of larger than 0.5 &mgr;m, dispersed polymer particles having a mean size of less than 0.2 &mgr;m, and a glass transition temperature of at least 70° C., and a hydrophilic binder.
    Type: Grant
    Filed: February 21, 1996
    Date of Patent: October 16, 2001
    Assignee: Eastman Kodak Company
    Inventors: Yongcai Wang, Melvin Michael Kestner, Alfred Bruce Fant, Dennis Edward Smith
  • Publication number: 20010028995
    Abstract: The invention is directed to a process for the preparation of polymer laminated base paper, said process comprising laminating a base paper web on at least one side thereof with at least one polymer layer by extrusion-coating at a coating speed of 300 m/min or more, wherein the said base paper web is heated prior to laminating.
    Type: Application
    Filed: March 2, 2001
    Publication date: October 11, 2001
    Inventors: Jan Bastiaan Bouwstra, Ieke De Vries
  • Patent number: 6300045
    Abstract: The present invention is an imaging element which includes a support, an imaging layer superposed on a side of said support and an overcoat overlying the imaging layer. The overcoat is composed of an organic polymer. The overcoat is discontinuous such that a fraction of the surface area of the imaging layer remains uncovered by said polymer, wherein the fraction of area not covered by the said polymer is from 0.02 to 0.98. The present invention is a photographic which includes a support, a silver halide emulsion layer superposed on a side of said support and an overcoat overlying the silver halide layer. The overcoat is composed of an organic polymer. The overcoat is discontinuous such that a fraction of the surface area of the silver halide emulsion layer remains uncovered by said polymer, wherein the fraction of area not covered by the said polymer is from 0.02 to 0.98. In one embodiment, the discontinuous overcoat is a series of parallel stripes.
    Type: Grant
    Filed: January 5, 2001
    Date of Patent: October 9, 2001
    Assignee: Eastman Kodak Company
    Inventors: Lloyd A. Lobo, Mridula Nair, Rukmini B. Lobo, Barry A. Fitzgerald
  • Patent number: 6296983
    Abstract: This invention relates to a photographic element comprising a base paper, and biaxially oriented sheets on each side of said base paper wherein said biaxially oriented sheets and said base paper have the strongest direction of each web within 3 degrees of the machine direction or cross direction, and wherein each web has a machine direction to cross machine direction stiffness ratio of greater than 1.5 or less than 0.7.
    Type: Grant
    Filed: November 20, 1998
    Date of Patent: October 2, 2001
    Assignee: Eastman Kodak Company
    Inventors: Thaddeus S. Gula, Peter T. Aylward, Robert P. Bourdelais
  • Patent number: 6296999
    Abstract: A substantially light-insensitive black and white thermographic material comprising a polymeric or polymer-coated support, a subbing layer on the support and on the same side of the support as the subbing layer a thermosensitive element containing a substantially light-insensitive organic silver salt, a reducing agent therefor in thermal working relationship therewith and a binder, wherein the subbing layer contains a binder, less than 20% by weight of silica and covalently bonded acid groups in the binder, if present, are either substantially present as free acid or substantially present as acid salts and has a leachable non-fluoro-halide ion content into water at room temperature over a period of 120 minutes of less than 0.
    Type: Grant
    Filed: August 20, 1998
    Date of Patent: October 2, 2001
    Assignee: Agfa-Gevaert
    Inventors: Carlo Uyttendaele, Ingrid Geuens, Ivan Hoogmartens
  • Publication number: 20010024770
    Abstract: A photographic element comprising a film support base, an adhesion promoting layer, a subbing layer and at least one light-sensitive silver halide emulsion layer, wherein the adhesion promoting layer is close to the support and contains a silane compound and a polyurethane, and the subbing layer, selected within the group consisting of a hydrophilic colloidal layer or a layer comprising a continuous gelled network of inorganic particles, is positioned between the adhesion promoting layer and the emulsion layer.
    Type: Application
    Filed: January 25, 2001
    Publication date: September 27, 2001
    Applicant: Ferrania S.p.A
    Inventors: Paola Puppo, Alberto Valsecchi, Carlo Barlocco
  • Patent number: 6291148
    Abstract: The invention relates to an element consisting essentially of a photographic element comprising a base material having an upper surface comprising an oriented sheet, at least one photosensitive silver halide layer, and at least one sharpness enhancing agent above said photosensitive silver halide layer.
    Type: Grant
    Filed: January 28, 2000
    Date of Patent: September 18, 2001
    Assignee: Eastman Kodak Company
    Inventors: Peter T. Aylward, Alphonse D. Camp, Robert P. Bourdelais, Gary J. McSweeney
  • Patent number: 6291127
    Abstract: The invention relates to an imaging member comprising at least one image layer and a base, said base comprising a cellulose paper that has its surfaces impregnated with water dispersible ester-based condensation polymer wherein the surface of said base has a roughness of less than 2.03 &mgr;m Ra and a hydrophobicity as measured by 40/20 Acid Valley test in excess of 500 seconds.
    Type: Grant
    Filed: August 23, 2000
    Date of Patent: September 18, 2001
    Assignee: Eastman Kodak Company
    Inventors: Sandra J. Dagan, Suresh Sunderrajan, Charles E. Romano, Jr., Robert A. Guistina
  • Patent number: 6287743
    Abstract: The invention relates to an imaging element comprising an imaging layer and a cellulose paper base wherein said base has an upper surface roughness of between 0.30 and 0.95 &mgr;m at a spatial frequency of between 200 cycles/mm and 1300 cycles/mm.
    Type: Grant
    Filed: September 9, 1999
    Date of Patent: September 11, 2001
    Assignee: Eastman Kodak Company
    Inventors: Michelle M. Oakland, Robert P. Bourdelais, Sandra J. Dagan, Peter T. Aylward
  • Patent number: 6280916
    Abstract: The invention relates to a multilayer photographic element comprising a reflective support wherein the color record 1 adjacent to the support comprises at least one light sensitive layer and a non-light sensitive dye-forming interlayer; and wherein color record 2 above said color record 1 comprises at least one light sensitive layer and at least two non-light sensitive dye-forming interlayers and wherein color record 3 comprises at least one light sensitive layer and a non-light sensitive dye-forming interlayer; an optional UV dye containing interlayer; and top overcoat; and wherein each interlayer is substantially scavenger free, silver halide grains comprising greater than 90% silver chloride, and wherein the reciprocity characteristics of the silver halide grains are such that for a separation exposure of 1 microsecond and 0.4 sec, each color record develops to a density of at least 2.0 within a log exposure range of 1.2 or less relative to the exposure point producing a density 0.04 above Dmin.
    Type: Grant
    Filed: December 27, 1999
    Date of Patent: August 28, 2001
    Assignee: Eastman Kodak Company
    Inventor: Michael R. Roberts
  • Patent number: 6277547
    Abstract: The invention relates to an element consisting essentially of a transparent polymer sheet, at least one emulsion adhering layer, and at least one light sensitive silver halide grain containing emulsion layer adhered to said emulsion adhering layer, wherein said polymer sheet is less than 40 &mgr;m in thickness.
    Type: Grant
    Filed: September 30, 1999
    Date of Patent: August 21, 2001
    Assignee: Eastman Kodak Company
    Inventors: Robert P. Bourdelais, Peter T. Aylward, Alphonse D. Camp, Thaddeus S. Gula
  • Patent number: 6274298
    Abstract: The present invention is directed to a photographic element comprising a support, at least one silver halide emulsion layer superposed on the support, and a processing-solution-permeable protective overcoat overlying the silver halide emulsion layer. The processing solution permeable overcoat is composed of a polyester ionomer. The present invention is also directed to a method of making a photographic print involving developing the photographic element. The imaged photographic element exhibits water, stain, and wet-abrasion resistance.
    Type: Grant
    Filed: June 7, 2000
    Date of Patent: August 14, 2001
    Assignee: Eastman Kodak Company
    Inventors: Mridula Nair, Tamara K. Jones, Joseph S. Sedita, David M. Teegarden, Bobbi A. Wohlschlegel
  • Patent number: 6274247
    Abstract: There is disclosed a polyester support, which has the dimensional change with the lapse of time after heating which corresponds to heat development, in a range of from −0.03% to +0.05% both in the longitudinal direction and the transverse direction. There is also disclosed a low-heat-shrinkage film, which has a dimensional change immediately after a heat treatment, which corresponds to a heat development, in a range of from 0% to +0.05% in both the longitudinal direction and the transverse direction. There is also disclosed a heat-development photographic light-sensitivity material, which comprises the support or the film as a support.
    Type: Grant
    Filed: May 25, 1999
    Date of Patent: August 14, 2001
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Kiyokazu Hashimoto, Sumio Nishikawa
  • Patent number: 6274284
    Abstract: The invention relates to an imaging member comprising an image layer, a voided layer below said image layer, and below said voided layer a layer comprising white pigment wherein said imaging member is substantially free of white pigment above said voided layer, and said voided layer comprises a polymer matrix and voids containing gas.
    Type: Grant
    Filed: December 22, 1999
    Date of Patent: August 14, 2001
    Assignee: Eastman Kodak Company
    Inventors: Peter T. Aylward, Alphonse D. Camp, Robert P. Bourdelais
  • Patent number: 6270950
    Abstract: A photographic element comprising a laminated base wherein said base comprises a voided polyester sheet having laminated thereto a biaxially oriented polyolefin sheet on the bottom of said polyester sheet and a biaxially oriented polyolefin sheet laminated to the top of said polyester sheet.
    Type: Grant
    Filed: October 5, 1999
    Date of Patent: August 7, 2001
    Assignee: Eastman Kodak Company
    Inventors: Robert P. Bourdelais, Alphonse D. Camp, Peter T. Aylward
  • Patent number: 6268117
    Abstract: This invention relates to a photographic member comprising at least one photosensitive layer and an integral base material comprising at least one polyester layer and an upper surface layer comprising a polyester or polyolefin polymer and a bluing tint wherein said integral base material has a spectral transmission of greater than 90%.
    Type: Grant
    Filed: December 21, 1998
    Date of Patent: July 31, 2001
    Assignee: Eastman Kodak Company
    Inventors: Peter T. Aylward, Robert P. Bourdelais, Thomas M. Laney, Alphonse D. Camp
  • Patent number: 6268116
    Abstract: The invention relates to a multilayer photographic element comprising a reflective support wherein the color record 1 adjacent to the support comprises at least one light sensitive layer and a non-light sensitive dye-forming interlayer; and wherein color record 2 above said color record 1 comprises at least one light sensitive layer and at least two non-light sensitive dye-forming interlayers and wherein color record 3 comprises at least one light sensitive layer and a non-light sensitive dye-forming interlayer; an optional UV dye containing interlayer and a top overcoat; and wherein each interlayer is completely or substantially scavenger free, silver halide grains comprising greater than 90% silver chloride, and wherein the reciprocity characteristics of the silver halide grains are such that for a separation exposure of 1 microsecond and 0.4 sec, each color record develops to a density of at least 2.0 within a log exposure range of 1.2 or less relative to the exposure point producing a density 0.
    Type: Grant
    Filed: December 27, 1999
    Date of Patent: July 31, 2001
    Assignee: Eastman Kodak Company
    Inventors: Michael R. Roberts, Gary J. McSweeney, Alphonse D. Camp
  • Patent number: 6265143
    Abstract: A photographic material comprising a Lippmann emulsion coated on a polycarbonate support is disclosed. The product is suited for new industrial applications under severe conditions of temperature and humidity.
    Type: Grant
    Filed: October 13, 1999
    Date of Patent: July 24, 2001
    Assignee: Agfa-Gevaert
    Inventors: Eric René Janssens, Gustaaf Joannes Peeters
  • Patent number: 6258519
    Abstract: There is disclosed a transparent magnetic recording medium comprising a support and at least one magnetic recording layer containing magnetic particles provided thereon, which comprises, as an upper layer coated on the magnetic recording layer, a layer that contains at least one sort of spherical inorganic particles having a Mohs' hardness of 6 to 8, the surface of the particles being treated with at least one of primary, secondary, or tertiary amine-series silane coupling agents, and that contains a higher fatty acid ester sliding agent. The transparent magnetic recording medium causes no error in magnetic input/output and also excels in transparency.
    Type: Grant
    Filed: September 7, 1999
    Date of Patent: July 10, 2001
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Naohiro Matsunaga, Tsutomu Arai
  • Patent number: 6255043
    Abstract: The invention relates to a photographic element comprising a paper base, at least one photosensitive silver halide layer, and a layer of biaxially oriented polymer sheet adhered to the backside of the said paper base opposite to the side where said at least one said silver halide photosensitive layer is located, wherein said polymer sheet is provided with machine readable indicia on the surface of said sheet between said base paper and said polymer sheet.
    Type: Grant
    Filed: May 10, 2000
    Date of Patent: July 3, 2001
    Assignee: Eastman Kodak Company
    Inventors: Douglas N. Haydock, Thaddeus S. Gula, Peter T. Aylward, Robert P. Bourdelais
  • Publication number: 20010005572
    Abstract: The present invention is an imaging element which includes a support, an imaging layer superposed on a side of said support and an overcoat overlying the imaging layer. The overcoat is composed of an organic polymer. The overcoat is discontinuous such that a fraction of the surface area of the imaging layer remains uncovered by said polymer, wherein the fraction of area not covered by the said polymer is from 0.02 to 0.98. The present invention is a photographic which includes a support, a silver halide emulsion layer superposed on a side of said support and an overcoat overlying the silver halide layer. The overcoat is composed of an organic polymer. The overcoat is discontinuous such that a fraction of the surface area of the silver halide emulsion layer remains uncovered by said polymer, wherein the fraction of area not covered by the said polymer is from 0.02 to 0.98. In one embodiment, the discontinuous overcoat is a series of parallel stripes.
    Type: Application
    Filed: January 5, 2001
    Publication date: June 28, 2001
    Inventors: Lloyd A. Lobo, Mridula Nair, Rukmini B. Lobo, Barry A. Fitzgerald
  • Patent number: 6242142
    Abstract: The invention relates to a photographic element comprising a translucent base and a color forming layer comprising at least one silver halide emulsion layer and dye forming coupler, wherein said base comprises at least one polymer sheet comprising a transparent polymer sheet containing voids, with the proviso that said translucent sheet is substantially free of white light reflecting pigments and wherein said translucent sheet has a light transmission of between 15% and 85%.
    Type: Grant
    Filed: April 25, 2000
    Date of Patent: June 5, 2001
    Assignee: Eastman Kodak Company
    Inventors: Alphonse D. Camp, Peter T. Aylward, Robert P. Bourdelais
  • Patent number: 6235459
    Abstract: An imaging support element comprising a polymeric film support and a thermally stable single subbing layer is made by forming a coating over the polymeric film support, the coating having a surface including amine reactive groups in a density of at least 1010 per cm2 and then heat treating the polymeric film support with the coating thereon at a temperature in the range of from about 50° C. below the glass transition temperature (Tg) of the polymeric support up to the glass transition temperature (Tg) of the polymeric support. The polymeric film support is nitrogen plasma treated. The layer is preferably formed by coating a monomer solution on the nitrogen plasma treated polymer support wherein the coated monomer has at least two vinyl sulfone groups which provide the amine reactive groups. Alternatively, the layer may be formed by applying to the polymeric support web a coating including at least one non-amine reactive comonomer and at least one comonomer having amine reactive side groups.
    Type: Grant
    Filed: December 20, 1999
    Date of Patent: May 22, 2001
    Assignee: Eastman Kodak Company
    Inventors: Jeremy M. Grace, Louis J. Gerenser, Wayne A. Bowman, Elizabeth G. Burns, Richard A. Castle, David M. Teegarden
  • Patent number: 6235458
    Abstract: A method for heat-treating a photographic film while conveying, which comprises the steps of: passing the photographic film through from 2 to 100 rolls disposed so that gaps between the adjacent rolls are within the range of from 0.1 cm to 50 cm; and heat-treating the photographic film during the conveyance, wherein the photographic film comprises a support having coated thereon at least one layer. Also disclosed is a method for heat-treating a photographic film, which comprises the steps of: heat-treating a photographic film; and winding the heat-treated film, wherein the heat-treated film is cooled before the winding, the cooling rate in the temperature range from the glass transition temperature (Tg) of the film +40° C. to the Tg −10° C. being at 0.01° C./second to 10° C./second. Further disclosed is a photographic film having a width direction and a lengthwise direction, and having a thickness unevenness along the film's width direction is from 2 &mgr;m to 300 &mgr;m.
    Type: Grant
    Filed: July 29, 1998
    Date of Patent: May 22, 2001
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Kiyokazu Hashimoto
  • Patent number: 6232054
    Abstract: A polyester support is described, which has a tear strength in the transverse direction (TD) of 10 to 100 g, a break strength in TD of 10 to 40 Kg/mm2, a break strength in the machine direction (MD) of 2 to 25 Kg/mm2 and a thickness unevenness in MD of 0 to 8 &mgr;m. Also described is a silver halide photographic light-sensitive material using the support.
    Type: Grant
    Filed: August 30, 2000
    Date of Patent: May 15, 2001
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Toshimitu Okutu, Kiyokazu Hashimoto
  • Patent number: 6232049
    Abstract: The present invention is a photographic element which includes a support, at least one silver halide emulsion layer superposed on the support and a processing solution permeable protective overcoat overlying the silver halide emulsion layer. The processing solution permeable overcoat is composed of a urethane-vinyl copolymer having acid functionalities wherein a weight ratio of a urethane component in the copolymer comprises from 20 to 100 percent and a weight ratio of a vinyl component in the copolymer comprises from 0 to 80 percent and a second polymer composed of polyvinyl alcohol, cellulose ethers, n-vinyl amides, polyesters, poly(ethylene oxide), starch, proteins, whey, albumin, poly(acrylic acid), alginates or gums. The present invention is a method of making a photographic element which includes providing an photographic element having a support, a silver halide emulsion layer superposed on the support and a processing solution permeable protective overcoat overlying the silver halide emulsion layer.
    Type: Grant
    Filed: January 22, 1999
    Date of Patent: May 15, 2001
    Assignee: Eastman Kodak Company
    Inventors: Mridula Nair, Tamara K. Jones, Tiecheng A. Qiao
  • Patent number: 6232056
    Abstract: The invention relates to an imaging element comprising a bottom layer of writable conductive material and above said writable conductive material layer a fusible layer between said writable conductive material and a substrate.
    Type: Grant
    Filed: December 21, 1998
    Date of Patent: May 15, 2001
    Assignee: Eastman Kodak Company
    Inventors: Peter T. Aylward, Robert P. Bourdelais, Alphonse D. Camp, Edgar E. Riecke, Dennis E. McGee
  • Patent number: 6228571
    Abstract: A photothermographic material has on one surface of a support at least one photosensitive layer containing a photosensitive silver halide, an organic silver salt, and a reducing agent. A non-photosensitive layer or back layer is formed on the back surface of the support by applying a coating solution of a binder containing at least 50% by weight of a polymer latex dispersed in a solvent containing at least 30% by weight of water and drying the coating. The polymer latex is of a polymer having an equilibrium moisture content of less than 2% by weight at 25° C. and RH 60%. The back layer can be coated at a low cost without a need for a harmful organic solvent. Upon storage in a humid atmosphere, sheets of the material are minimized in fog and free of sticking.
    Type: Grant
    Filed: June 18, 1997
    Date of Patent: May 8, 2001
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Akira Hatakeyama
  • Patent number: 6228569
    Abstract: A silver halide light sensitive photographic element is disclosed comprising a polyethylene terephthalate film base, at least one light sensitive silver halide-containing emulsion layer, an antihalation undercoat layer, and a process-surviving antistatic backcoat, wherein the polyethylene terephthalate film base has been formed by drafting a cast resin at a stretch ratio of at least 3.4, tentering at a stretch ratio of at least 3.4, and heat-setting at an actual heat-set temperature of at least 216° C. In accordance with preferred embodiments of the invention, the polyethylene terephthalate film base of the photographic element is formed by: (a) casting a molten polyethylene terephthalate resin in a machine direction onto a casting surface to form a continuous sheet, (b) drafting the sheet by stretching in the machine direction at a stretch ratio of from 3.4 to 4, and at a temperature ranging from 70 to 130° C.
    Type: Grant
    Filed: May 20, 1999
    Date of Patent: May 8, 2001
    Assignee: Eastman Kodak Company
    Inventors: Larry K. Maier, Timothy F. Cilano, Fred D. Kelley, Frank D. Manioci, Diana C. Petranek, Michael Schild
  • Patent number: 6225040
    Abstract: There is provided a method for preparing a biaxially oriented polyester sheet or web, with improved antistatic properties, comprising the steps of (i) stretching said polyester sheet or web first in one direction and second in a direction perpendicular thereto (ii) coating said hydrophobic polyester sheet or web, either before stretching or between said first and second stretching operation, on one or both sides, with a transparent antistatic primer layer, wherein the coating composition of said transparent antistatic primer layer comprises (1) a dispersion of a polythiophene with conjugated polymer backbone and a polymeric polyanion compound and (2) a latex polymer having hydrophilic functionality. The primer layer is coated from an aqueous composition and does not show a substantial change in resistivity depending on relative humidity or wet processing.
    Type: Grant
    Filed: December 15, 1994
    Date of Patent: May 1, 2001
    Assignee: Agfa-Gevaert
    Inventors: Bavo Muys, Dirk Quintens, Jozef Boeykens, Etienne Van Thillo, Geert Defieuw
  • Patent number: 6214530
    Abstract: A base film including a substrate, an adhesion layer, a conductive layer, and a magnetic layer is provided. The adhesion layer preferably includes a sulfonated polyester/vinyl addition polymer, wherein the adhesion layer is disposed between the substrate and the conductive layer and improves adhesion between these layers, even under wet conditions. An adhesion layer is particularly useful in photographic elements and is at least located on a surface of the substrate that is opposite a silver halide emulsion layer, although emulsion receptivity can be enhanced by including an adhesion layer on the emulsion-side of the substrate.
    Type: Grant
    Filed: June 30, 1999
    Date of Patent: April 10, 2001
    Assignee: Tulalip Consultoria Comercial Sociedade Unidessoal S.A.
    Inventors: Eric D. Morrison, Paola Puppo
  • Patent number: 6207362
    Abstract: The invention relates to an imaging element comprising a base comprising a cellulose fiber containing paper, wherein said paper has a tear resistance of between 200 and 1800 Newton.
    Type: Grant
    Filed: September 9, 1999
    Date of Patent: March 27, 2001
    Assignee: Eastman Kodak Company
    Inventors: Sandra J. Dagan, Peter T. Aylward, Robert P. Bourdelais
  • Patent number: 6203970
    Abstract: A photosensitive photographic element is described which comprises a support having at least one ? hydrophilic silver halide containing layer. On the hydrophilic silver halide containing layers there is an overcoat layer. The overcoat layer comprises a hydrophobic thermoplastic polymer that is present in the form of a porous membrane. The pores of the membrane are occupied by a hydrophilic composition.
    Type: Grant
    Filed: December 16, 1999
    Date of Patent: March 20, 2001
    Assignee: Eastman Kodak Company
    Inventor: Krishnan Chari
  • Patent number: 6197487
    Abstract: A support of photographic material is disclosed. The support is composed of plastic film in which polyethylene naphthalate is the major component. The plastic film is thermally treated at a temperature of not less than its Tg of said film to no more than its Tg plus 55° C.
    Type: Grant
    Filed: May 28, 1999
    Date of Patent: March 6, 2001
    Assignee: Konica Corporation
    Inventors: Kenji Ohnuma, Masahito Takada, Hidetoshi Ezure, Yasuo Kurachi
  • Patent number: 6197482
    Abstract: The present invention is an imaging element which includes a support, an imaging layer superposed on a side of said support and an overcoat overlying the imaging layer. The overcoat is composed of an organic polymer. The overcoat is discontinuous such that a fraction of the surface area of the imaging layer remains uncovered by said polymer, wherein the fraction of area not covered by the said polymer is from 0.02 to 0.98. The present invention is a photographic which includes a support, a silver halide emulsion layer superposed on a side of said support and an overcoat overlying the silver halide layer. The overcoat is composed of an organic polymer. The overcoat is discontinuous such that a fraction of the surface area of the silver halide emulsion layer remains uncovered by said polymer, wherein the fraction of area not covered by the said polymer is from 0.02 to 0.98. In one embodiment, the discontinuous overcoat is a series of parallel stripes.
    Type: Grant
    Filed: May 14, 1999
    Date of Patent: March 6, 2001
    Assignee: Eastman Kodak Company
    Inventors: Lloyd A. Lobo, Mridula Nair, Rukmini B. Lobo, Barry A. Fitzgerald
  • Patent number: 6187501
    Abstract: The invention relates to an imaging member comprising a substrate, at least one oriented polymer sheet adhered to said substrate and a binder layer between said at least one oriented polymer sheet and said substrate, wherein said binder layer comprises a binder polymer that has an energy to break of between 9.0×105 J/m3 and 3.5×107 J/m3.
    Type: Grant
    Filed: August 10, 1999
    Date of Patent: February 13, 2001
    Assignee: Eastman Kodak Company
    Inventors: Peter T. Aylward, Robert P. Bourdelais, Thaddeus S. Gula
  • Patent number: 6187521
    Abstract: The present invention is an imaging element which includes a support, an image forming layer superposed on the support; and at least one layer superposed on the support. The at least one layer superposed on the support is formed from a non-aqueous coating composition of a composite wax particle composed of a wax phase and a non-crosslinked polymer phase and an organic solvent. The wax phase includes a wax having a melting point of greater than 30° C. The wax comprises greater than 80% by weight of the wax phase. The wax phase to non-crosslinked polymer phase ratio is greater than 30/70 and less than 90/10.
    Type: Grant
    Filed: December 28, 1998
    Date of Patent: February 13, 2001
    Assignee: Eastman Kodak Company
    Inventors: Yongcai Wang, Janglin Chen, Dwight W. Schwark, James L. Bello
  • Patent number: 6187518
    Abstract: The present invention is a photographic element which includes a support, at least one silver halide emulsion superposed on a front side of the support and an outermost backing layer superposed on a backside of the support. The outermost backing layer is composed of a hydrophobic binder and a hydrophilic binder wherein the backing layer has an advancing water contact angle of 70 or greater and a receding water contact angle of at least 40 less than the advancing water contact angle.
    Type: Grant
    Filed: October 23, 1998
    Date of Patent: February 13, 2001
    Assignee: Eastman Kodak Company
    Inventors: Raymond T. Jones, Ravi Sharma, Alfred B. Fant
  • Patent number: 6187523
    Abstract: The invention relates to an imaging element comprising a base paper having adhered to its upper surface an integrally formed biaxially oriented polymer sheet comprising at least three layers, wherein said integrally formed biaxially oriented polymer sheet comprises at least one layer of voided polyester polymer and above said voided polyester layer an upper solid polymer layer and below said voided polyester layer a lower solid polymer layer, and at least one backside oriented polymer sheet below said base paper, and wherein said upper polymer layer comprises a white pigment.
    Type: Grant
    Filed: August 10, 1999
    Date of Patent: February 13, 2001
    Assignee: Eastman Kodak Company
    Inventors: Peter T. Aylward, Robert P. Bourdelais
  • Patent number: 6187522
    Abstract: The present invention is an imaging element having, a support, an image-forming layer superposed on the support and an outermost scratch resistant antistatic layer superposed on the support. The outermost scratch resistant antistatic layer has a thickness between 0.6 and 10 microns. The scratch resistant layer is composed of a polymer having a modulus greater than 100 MPa measured at 20° C. and a tensile elongation to break greater than 50%, a filler particle having a modulus greater than 10 GPa, and an electrically conducting polymer. The volume ratio of the polymer to the filler particle is between 70:30 and 40:60 and the electrically conducting polymer is present at a weight concentration based on a total dried weight of the scratch resistant layer of between 1 and 10 weight percent.
    Type: Grant
    Filed: March 25, 1999
    Date of Patent: February 13, 2001
    Assignee: Eastman Kodak Company
    Inventors: Debasis Majumdar, Charles C. Anderson
  • Patent number: 6177239
    Abstract: The present invention is an imaging element which includes a support, an image forming layer superposed on the support and at least one layer superposed on the support. The at least one layer is formed from a non-aqueous coating composition composed of a composite wax particle having a wax phase and a non-crosslinked polymer phase. The wax phase includes a wax having a melting point of greater than 30° C., the wax comprising greater than 80% by weight of the wax phase. The at least one layer has a dry coating weight of from 1 to 300 mg/m2.
    Type: Grant
    Filed: December 28, 1998
    Date of Patent: January 23, 2001
    Assignee: Eastman Kodak Company
    Inventors: Yongcai Wang, Janglin Chen, Dwight W. Schwark
  • Patent number: 6174661
    Abstract: The present invention is a photographic element containing a support, at least one light sensitive emulsion layer superposed on the first side of the support, and an outermost lubricant layer superposed on the support. The outermost layer includes more than 80 percent by weight of a composite wax particle. The composite wax particle includes a wax phase and a non-crosslinked polymer phase. The wax phase is greater than 80 percent by weight of a wax which has a melting point of greater than 30° C. In one embodiment the lubricant layer contains a fluoro containing compound. It is envisioned that the lubricant layer overlies a transparent magnetic layer. The total coating weight of the composite wax particle in the lubricant layer is in the range of from 1 to 300 mg/m2. Preferably, the fluoro compound contains at least one type of an ionic group or a nonionic group.
    Type: Grant
    Filed: December 28, 1998
    Date of Patent: January 16, 2001
    Assignee: Eastman Kodak Company
    Inventors: Janglin Chen, Yongcai Wang, Gregory W. Keyes, Richard A. Castle