Two Or More Radiation-sensitive Layers Containing Other Than That Characterized By The Composition Of A Single Sensitive Layer Patents (Class 430/502)
  • Publication number: 20020155373
    Abstract: Radiographic films containing cubic grain, high silver chloride emulsions can be used in radiographic imaging assemblies comprising intensifying screens for therapy portal localization imaging. The average silver halide grain size is from about 0.1 to about 0.18 &mgr;m and the silver halide is free of silver halide dopant compounds. These films provide excellent contrast with improved exposure latitude for use in various exposure conditions and equipment.
    Type: Application
    Filed: April 2, 2002
    Publication date: October 24, 2002
    Applicant: Eastman Kodak Company
    Inventors: Robert E. Dickerson, William E. Moore
  • Patent number: 6465164
    Abstract: This invention relates to a method of forming an image comprising providing an imaging element comprising a transparent polymer sheet, and at least one photo sensitive dye forming coupler containing layer is on each side of said sheet, wherein there are at least four separate photo sensitive layers and the photo sensitive layers comprise at least four dye forming couplers that form at least four spectrally distinct colors, image wise exposing said imaging element by actinic radiation, developing an image, and applying a white reflective sheet to one side of the developed imaging element.
    Type: Grant
    Filed: September 18, 2000
    Date of Patent: October 15, 2002
    Assignee: Eastman Kodak Company
    Inventors: Peter T. Aylward, Alphonse D. Camp, James L. Edwards, Robert P. Bourdelais
  • Patent number: 6455239
    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: Grant
    Filed: March 6, 2001
    Date of Patent: September 24, 2002
    Assignee: Konica Corporation
    Inventors: Kiyoshi Oishi, Kazuhiro Fukuda
  • Patent number: 6455227
    Abstract: A multilayer resist structure is irradiated more than one time with ultraviolet rays through a photomask. Each time the structure is irradiated, ultraviolet rays of a little greater quantity of light than those used in the last irradiation are used. Also, with each exposure, a photomask which has a larger lightproof section than that used in the last irradiation is used. Next, the multilayer resist structure is developed, and the exposed area of each photoresist is removed with a developing solution. Also, in amorphous silicon layers, the areas under the removed photoresist are easily removed with the developing solution. A resist structure having desired steps is thus completed. Using the resist structure, a three-dimensional microstructure can be formed.
    Type: Grant
    Filed: December 29, 1999
    Date of Patent: September 24, 2002
    Assignee: Sony Corporation
    Inventor: Masaki Hara
  • Publication number: 20020119405
    Abstract: A multilayer light-sensitive silver halide photographic negative image type material and a method to prepare said material has been described, said material comprising on at least one side of a support a multilayer composition of at least two layers of negative image type silver halide emulsions adjacent to each other, wherein the emulsion layer closest to the said support comprises tabular emulsion crystals selected from the group consisting of silver chloride, silver chlorobromide, silver chloroiodide and silver chlorobromoiodide having a {111} crystal habit and silver chloride, silver chlorobromide, silver chloroiodide and silver chlorobromoiodide having a {100} crystal habit and wherein the adjacent layer(s) farther from the said support comprise(s) essentially cubic emulsion crystals selected from the group consisting of silver chloride, silver chlorobromide and silver bromide, wherein the essentially cubic grains are less sensitive than the tabular grains and wherein the said tabular
    Type: Application
    Filed: February 21, 2002
    Publication date: August 29, 2002
    Applicant: Agfa-Gevaert, N.V.
    Inventors: Hieronymus Andriessen, Freddy Henderickx
  • Patent number: 6440650
    Abstract: A silver halide color reversal photosensitive material comprising at least one blue-sensitive emulsion layer, at least one green-sensitive emulsion layer, and at least one red-sensitive emulsion layer on a transparent support, and capable of forming a color image when the photosensitive material was subjected to color development in the presence of an aromatic primary amine color developing agent after the photosensitive material was subjected to first development of black-and-white development, wherein the silver halide content in the photosensitive material before the first development is 2.5 to 6.0 g in terms of silver per m2 of the photosensitive material, the silver halide content in an unexposed portion of the photosensitive material immediately before the color development is 1.0 to 2.5 g in terms of silver per m2 of the photosensitive material, and the maximum density of each of cyan, magenta, and yellow in the color image after the color development is 3.0 or more.
    Type: Grant
    Filed: November 9, 2000
    Date of Patent: August 27, 2002
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Naoto Matsuda, Hisashi Mikoshiba
  • Patent number: 6436623
    Abstract: A colour photographic silver halide material having a support and at least one photo-sensitive silver halide emulsion layer which is associated with a cyan coupler of the formula (I): in which R1, R2, R3, Z1, Y1 and n have the meaning stated in the description, is distinguished by elevated dye stability of the dye produced from the coupler by chromogenic processing.
    Type: Grant
    Filed: October 31, 2001
    Date of Patent: August 20, 2002
    Assignee: Agfa-Gevaert
    Inventors: Jörg Hagemann, Jan Haller, Günter Helling
  • Patent number: 6436621
    Abstract: A multilayer light-sensitive silver halide photographic negative image type material and a method to prepare said material has been described, said material comprising on at least one side of a support a multilayer composition of at least two layers of negative image type silver halide emulsions adjacent to each other, wherein the emulsion layer closest to the said support comprises tabular emulsion crystals selected from the group consisting of silver chloride, silver chlorobromide, silver chloroiodide and silver chlorobromoiodide having a {111} crystal habit and silver chloride, silver chlorobromide, silver chloroiodide and silver chlorobromoiodide having a {100} crystal habit and wherein the adjacent layer(s) farther from the said support comprise(s) essentially cubic emulsion crystals selected from the group consisting of silver chloride, silver chlorobromide and silver bromide, wherein the essentially cubic grains are less sensitive than the tabular grains and wherein the said tabular
    Type: Grant
    Filed: February 21, 2002
    Date of Patent: August 20, 2002
    Assignee: Agfa-Gevaert
    Inventors: Hieronymus Andriessen, Freddy Henderickx
  • Publication number: 20020106576
    Abstract: Radiographic films containing cubic grain, high silver chloride emulsions can be used in radiographic imaging assemblies comprising intensifying screens for therapy portal imaging. The average silver halide grain size is from about 0.1 to about 0.18 &mgr;m. These films provide excellent contrast with improved exposure latitude for use in various exposure conditions and equipment.
    Type: Application
    Filed: December 6, 2000
    Publication date: August 8, 2002
    Applicant: Eastman Kodak Company
    Inventors: Robert E. Dickerson, William E. Moore
  • Patent number: 6416943
    Abstract: The invention provides a color photographic element suitable for forming both a colored dye image and a neutral silver-based image, comprising a support bearing at least one light-sensitive silver halide emulsion layer containing a coupler capable of forming a colored dye upon development, and bearing a further light-sensitive silver halide emulsion layer containing a coupler which is capable of releasing a thiovinyl group upon development that is capable of reacting to form a neutral silver-based image.
    Type: Grant
    Filed: November 14, 2000
    Date of Patent: July 9, 2002
    Assignee: Eastman Kodak Company
    Inventors: Robert F. Romanet, Susan D. Hill, Stephen P. Singer, Anabisdally I. Bodden
  • Patent number: 6403296
    Abstract: A color photographic silver halide material containing gelatine, comprising a support and at least one photosensitive silver halide emulsion layer and at least one non-photosensitive layer, which material contains at least one compound of the formula (I) or (II) and is hardened with a vinylsulfonyl compound in which R1, R2, R3, m and n have the meanings stated in the description and wherein two residues R2 or R3 may in each case mean a fused carbo- or heterocyclic ring or the compound of the formula I is attached to a polymer chain via one of the residues R1, R2 or R3, in which R11, R12, R13, R14, o and p have the meanings stated in the description wherein two residues R13 or R14 may in each case mean a fused carbo- or heterocyclic ring or the compound of the formula II is attached to a polymer chain via a residue R13 or R14, is distinguished by improved storage stability.
    Type: Grant
    Filed: August 9, 2000
    Date of Patent: June 11, 2002
    Assignee: Agfa-Gevaert
    Inventors: Jörg Hagemann, Markus Geiger, Heinrich Odenwälder
  • Patent number: 6403292
    Abstract: The invention relates to a photographic element comprising a base material, at least one exposure side photosensitive silver halide layer, and at least one backside photosensitive silver halide layer, wherein said face side photosensitive layer has lower speed than said backside photosensitive layer, and wherein said base material has a percent transmission of between 35 and 60%.
    Type: Grant
    Filed: December 6, 2000
    Date of Patent: June 11, 2002
    Assignee: Eastman Kodak Company
    Inventors: John L. Pawlak, Gary J. McSweeney, Jerzy Z. Mydlarz, Jerzy A. Budz, Eric L. Bell, Alphonse D. Camp, Robert P. Bourdelais, Peter T. Aylward
  • Patent number: 6399289
    Abstract: Disclosed is a silver halide color photographic light-sensitive material comprising, on a support, a unit blue-sensitive layer including at least one blue-sensitive silver halide emulsion layer containing a yellow coupler, a unit green-sensitive layer including at least one green-sensitive silver halide emulsion layer containing a magenta coupler, and a unit red-sensitive layer including at least one red-sensitive silver halide emulsion layer containing a cyan coupler, at least one of the unit blue-, green-, and red-sensitive layers comprising not less than two color-sensitive layers differing in sensitivity, of which a highest-sensitivity layer being positioned farthest from the support, wherein the light-sensitive material has at least one layer containing a high-boiling organic solvent, at least 50% by weight of which is occupied by a high-boiling organic solvent having a viscosity of not less than 300 mPas at 25° C.
    Type: Grant
    Filed: September 28, 2000
    Date of Patent: June 4, 2002
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Junichiro Hosokawa, Hisashi Mikoshiba, Yasuhiro Kato
  • Publication number: 20020064725
    Abstract: A system has been disclosed for use in radiographic industrial non-destructive testing materials and personal monitoring, making use therefor, of tabular silver brom(oiod)ide emulsion grains having {111} major faces, an average equivalent circular diameter of at least 0.5 &mgr;m and an average thickness of less than 0.30 &mgr;m, having been chemically sensitized by the steps of adding at least a gold salt in order to provide the surface of said tabular grains with at least 6000 atoms of gold per &mgr;m2 of its grain surface and per (0.1 &mgr;m of thickness)2; and at least a sulfite salt in such an amount that the ratio of the number of gold atoms per &mgr;m2 and (concentration of said sulfite salt, expressed in mmole per mole of silver)2 is at least 200000.
    Type: Application
    Filed: September 19, 2001
    Publication date: May 30, 2002
    Inventors: Marc Van Den Zegel, Marleen De Vester
  • Patent number: 6391531
    Abstract: High performance radiographic films exhibit excellent exposure latitude when imaged in radiographic imaging assemblies comprising intensifying screens. These films having at least two tabular silver halide emulsions on each side of a film support, and the emulsion closest to the film support on each side includes chemistry to control crossover and a rhodium dopant and has higher photographic speeds than the other emulsions. These films are particularly useful for thoracic imaging.
    Type: Grant
    Filed: November 6, 2000
    Date of Patent: May 21, 2002
    Assignee: Eastman Kodak Company
    Inventor: Robert E. Dickerson
  • Patent number: 6387586
    Abstract: High performance, very high contrast radiographic films exhibit visually adaptive contrast when imaged in radiographic imaging assemblies comprising intensifying screens. These films having at least two tabular silver halide emulsions on each side of a film support, and the emulsion closest to the film support on each side includes chemistry to control crossover and a rhodium dopant and has higher photographic speeds than the other emulsions. In addition, the films can be rapidly processed to provide images having a peak gamma >3.1 while maintaining gammas >1.0 out into the toe of a D vs. logE sensitometric curve to a value of −0.9 logE. These films are particularly useful for thoracic imaging.
    Type: Grant
    Filed: November 6, 2000
    Date of Patent: May 14, 2002
    Assignee: Eastman Kodak Company
    Inventors: Robert E. Dickerson, Phillip C. Bunch
  • Patent number: 6383692
    Abstract: A material is disclosed which is suitable for making a flexographic printing plate and comprises in the order given a base, a photopolymer layer and a photothermographic or thermographic recording layer which contains an organic silver salt. By image-wise exposing the recording layer, a photomask is obtained through which the photopolymer layer can be subsequently exposed. Using a suitable solvent, the (photo)thermographic recording layer can be removed and the unexposed areas of the photopolymer layer can be washed out simultaneously in a single development step. The relief image thus obtained can be used as a print master for flexographic printing.
    Type: Grant
    Filed: July 13, 2000
    Date of Patent: May 7, 2002
    Assignee: Agfa-Gevaert
    Inventors: Luc Leenders, Eddie Daems, Ronn Andriessen
  • Patent number: 6372418
    Abstract: A silver halide light sensitive photographic print element is disclosed comprising a support bearing on one side thereof: a blue color sensitive record comprising at least one blue-sensitive silver halide emulsion yellow-image forming layer, a red color sensitive record comprising at least one red-sensitive silver halide emulsion cyan-image forming layer, and a green color sensitive record comprising at least one green-sensitive silver halide emulsion magenta-image forming layer; wherein the overall contrast (OC) of the green record is greater than 1.7, the mid-scale contrast (MSC) of the green record is less than 2.6, and the upper-scale contrast (USC) of the green record is from 2.85 to 3.15, wherein the parameters OC, MSC and USC are as defined herein. Color print film silver halide photographic elements in accordance with the invention enable the production of outstanding projected images having improved flesh tone and shadow detail reproduction, and sufficiently high black densities.
    Type: Grant
    Filed: July 18, 2000
    Date of Patent: April 16, 2002
    Assignee: Eastman Kodak Company
    Inventors: Kathleen R. C. Gisser, Esther M. Betancourt, Leslie Gutierrez, Sandra M. Finn, Susan K. Mroczek, Christopher J. Haller
  • Patent number: 6361918
    Abstract: High speed and high contrast radiographic films can be imaged in radiographic imaging assemblies comprising intensifying screens. These films having a tabular silver halide emulsions on each side of a film support. At least one emulsion comprises a rhodium dopant and has higher photographic speeds than the other emulsions despite the fact that the emulsion grains have a small average thickness of from about 0.09 to about 0.11 &mgr;m.
    Type: Grant
    Filed: November 6, 2000
    Date of Patent: March 26, 2002
    Assignee: Eastman Kodak Company
    Inventors: Robert E. Dickerson, Carl R. Preddy
  • Patent number: 6358661
    Abstract: High performance radiographic films exhibit visually adaptive contrast when imaged in radiographic imaging assemblies comprising an intensifying screen on both sides. These films having a single silver halide emulsion on each side of a film support and are free of particulate dyes that are conventionally used to control crossover. In addition, the films can be rapidly processed to provide the desired image having visually adaptive contrast, that is the upper scale contrast is at least 1.5 times the lower scale contrast. Thus, dense objects can be better seen at the higher densities of the radiographic image without any adverse sensitometric changes in the lower scale densities. These films are useful for general-purpose radiographic imaging using a wide variety of exposure and processing conditions.
    Type: Grant
    Filed: November 6, 2000
    Date of Patent: March 19, 2002
    Assignee: Eastman Kodak Company
    Inventors: Robert E. Dickerson, Mark P. Pavlik
  • Patent number: 6358662
    Abstract: Localization radiographic films containing rhodium-doped, cubic grain, high silver chloride emulsions can be used in radiographic imaging assemblies comprising intensifying screens for therapy imaging. The average silver halide grain size is from 0.20 to about 0.30 &mgr;m, and they comprise at least 80 mol % chloride based on total silver. These films provide colder image tones and reduced processing non-uniformities.
    Type: Grant
    Filed: December 6, 2000
    Date of Patent: March 19, 2002
    Assignee: Eastman Kodak Company
    Inventors: Robert E. Dickerson, Eric L. Dillenbeck
  • Patent number: 6355404
    Abstract: The invention relates to a display material comprising a base, said base comprising a polyester sheet comprising at least one voided polyester diffusion layer, at least one topside photosensitive silver halide layer on the topside of said base and at least one bottom side photosensitive layer on the bottom side of said base, below said at least one bottom side emulsion layer a tone enhancing layer, and below said tone enhancing layer an antihalation layer, wherein said display material has a light transmission of between 35 and 60 percent in the developed Dmin areas of the display material.
    Type: Grant
    Filed: December 6, 2000
    Date of Patent: March 12, 2002
    Assignee: Eastman Kodak Company
    Inventors: Alphonse D. Camp, Peter T. Aylward, Robert P. Bourdelais, Thomas M. Laney, John L. Pawlak, Gary J. McSweeney
  • Patent number: 6355403
    Abstract: This invention relates to a photographic element comprising a base having a reflection surface on each side having a spectral transmission of less than 10% and at least one photosensitive silver halide containing layer on each side wherein said photographic element has a speed less than 50 ASA.
    Type: Grant
    Filed: January 28, 2000
    Date of Patent: March 12, 2002
    Assignee: Eastman Kodak Company
    Inventors: Robert P. Bourdelais, Alphonse D. Camp, Peter T. Aylward
  • Patent number: 6352822
    Abstract: The invention relates to a display material comprising a base said base comprising a polyolefin sheet comprising at least one voided polyolefin diffusion layer, at least one topside photosensitive silver halide layer on the topside of said base and at least one bottom side photosensitive layer on the bottom side of said base, below said bottom side emulsion a tone enhancing layer and below said tone enhancing layer an antihalation layer wherein said display material has a light transmission of between 35 and 60 percent in the developed Dmin areas of the display material.
    Type: Grant
    Filed: December 6, 2000
    Date of Patent: March 5, 2002
    Assignee: Eastman Kodak Company
    Inventors: Alphonse D. Camp, Peter T. Aylward, Robert P. Bourdelais, John L. Pawlak, Gary J. McSweeney
  • Patent number: 6350554
    Abstract: High performance, very high contrast radiographic films exhibit visually adaptive contrast when imaged in radiographic imaging assemblies comprising intensifying screens. These films having at least two tabular silver halide emulsions on each side of a film support, and the emulsion closest to the film support on each side includes chemistry to control crossover and a rhodium dopant and has higher photographic speeds than the other emulsions. In addition, the films can be rapidly processed to provide images having visually adaptive contrast wherein the upper scale contrast is at least 1.7 times the lower scale contrast. These films are particularly useful for orthopedic imaging.
    Type: Grant
    Filed: November 6, 2000
    Date of Patent: February 26, 2002
    Assignee: Eastman Kodak Company
    Inventors: Robert E. Dickerson, Phillip C. Bunch
  • Patent number: 6350564
    Abstract: Disclosed is a color silver halide photographic element comprising a support bearing: (1) a light sensitive silver halide emulsion layer; (2) a nitrogen heterocycle with a minimum of three heteroatoms that does not react with oxidized developer, does not contain free thiol substituents, and has a ClogP sufficient to increase the photographic speed of said element compared to the same element without the compound, said heterocycle compound located either in said light sensitive layer or in a layer adjacent to it; and (3) a light reflecting silver halide material; provided that the heterocycle compound and the light reflecting material are located either (a) in different layers of the element located close enough to each other so that a super-additive speed increase is realized or (b) in the same light sensitive layer. The invention provides improved light sensitivity.
    Type: Grant
    Filed: October 17, 2000
    Date of Patent: February 26, 2002
    Assignee: Eastman Kodak Company
    Inventors: Joseph F. Bringley, James A. Friday, Stephen P. Singer, Marcello Vitale
  • Patent number: 6348293
    Abstract: A radiographic film material is described including a transparent film support having first and second major surfaces coated with a subbing layer, optionally overcoated with an antihalation undercoat. Coated adjacent on each side of the film support is a light-sensitive silver halide emulsion overcoated with a protective antistress layer. The emulsion layer has chemically and spectrally sensitized {111} tabular hexagonal grains or crystals, having silver iodide in an amount of at most 3 mole %, based on silver, covering at least 50% of the total projective surface of all grains, having an average grain thickness of less than 0.30 &mgr;m. The antistress layer, or the optional antihalation undercoat or both includes a N-amino mercapto-triazole compound containing one or more alkali soluble group(s). A radiographic screen/film combination is also described including the film material.
    Type: Grant
    Filed: November 20, 2000
    Date of Patent: February 19, 2002
    Assignee: Agfa-Gevaert
    Inventors: Ann Verbeeck, Johan Loccufier, Govert De Baecke, Freddy Henderickx, Heinrich Odenwälder
  • Patent number: 6346368
    Abstract: A silver halide color reversal photographic material is disclosed, comprising a support having thereon a blue-sensitive silver halide emulsion layer containing a yellow dye-forming coupler, a green-sensitive silver halide emulsion layer containing a magenta dye-forming coupler and a red-sensitive silver halide emulsion layer containing a cyan dye-forming coupler, wherein a RMS value at a density of 0.8 of the red-sensitive layer is within a range of 20 to 90% of a RMS value at a density of 0.8 of the green-sensitive layer.
    Type: Grant
    Filed: July 21, 2000
    Date of Patent: February 12, 2002
    Assignee: Konica Corporation
    Inventor: Yasushi Irie
  • Patent number: 6346360
    Abstract: A radiographic film material has been provided, comprising a transparent film support having first and second major surfaces coated, apart from a subbing layer and, optionally, a non-light-sensitive hydrophilic layer thereupon, with at least one light-sensitive silver halide emulsion layer overcoated with a protective antistress layer, said emulsion layer(s) having chemically and spectrally sensitized {111} tabular hexagonal core-shell emulsion grains or crystals in an amount of at least 50% of the total projective grain surface of all grains, said grains being composed of a silver bromide core and a silver bromoiodide shell having an average amount over the whole crystal volume of more than 90 mole % of silver bromide, said grains further having a mean equivalent volume diameter of from 0.3 &mgr;m up to 1.0 &mgr;m and an average grain thickness of less than 0.
    Type: Grant
    Filed: November 7, 2000
    Date of Patent: February 12, 2002
    Assignee: Agfa-Gevaert
    Inventors: Ann Verbeeck, Freddy Henderickx
  • Patent number: 6342338
    Abstract: A black-and-white silver halide photographic film material, particularly suitable for use in radiography, has been disclosed, said material comprising a transparent film support having first and second major surfaces coated with a subbing layer, further coated adjacent thereto on one side (for a single-side coated material) or on both sides (for a duplitized material) of said film support and overcoated with a protective antistress layer, a light-sensitive silver halide emulsion layer having chemically and spectrally sensitized {111} tabular hexagonal grains, accounting for at least 50% of the total projective surface of all grains, wherein said film material is coated with a low amount of silver and wherein said protective antistress layer(s)and/or another hydrophilic non-light-sensitive layer comprise(s) a compound according to general formula (I) in an amount of at least 0.5 mmole per mole of coated silver halide, as claimed.
    Type: Grant
    Filed: November 14, 2000
    Date of Patent: January 29, 2002
    Assignee: Agfa-Gevaert
    Inventors: Ann Verbeeck, Govert Wim De Baecke, Johan August Loccufier, Freddy Henderickx
  • Patent number: 6316176
    Abstract: A method has been described of chemically sensitizing a silver halide emulsion having silver halide grains and a binder, comprising the steps of adding thereto, besides a chemically sensitizing agent providing sulphur, an organo-tellurium sensitizing compound providing tellurium in a molar ratio amount versus sulphur of less than 0.30. A light-sensitive silver halide photographic element has also been described which has been made highly sensitive by chemically sensitizing a silver halide emulsion which has been made highly sensitive by the method described hereinbefore.
    Type: Grant
    Filed: July 21, 2000
    Date of Patent: November 13, 2001
    Assignee: Agfa-Gevaert
    Inventors: Kathy Elst, Johan Loccufier
  • Patent number: 6316175
    Abstract: A silver halide photographic material has been provided, having in a layer arrangement at one or both sides of a subbed support, corresponding with a single-side coated or a double-side coated material respectively, one or more layer(s) comprising a light-sensitive silver halide emulsion, one or more protective antistress layer(s) and, optionally, an outermost afterlayer, wherein at least one of said layers, subbing layer(s) inclusive, further comprises means in order to provide, when conditioned at a relative humidity of at most 30%, an electrical resistance, measured as described in Research Disclosure June 1992, item 33840, of from 4×109 &OHgr;/sq. up to 5×1010 &OHgr;/sq. for the layer having the lowest resistance.
    Type: Grant
    Filed: February 22, 2000
    Date of Patent: November 13, 2001
    Assignee: Agfa-Gevaert
    Inventors: Marc Van den Zegel, Etienne Van Thillo, Bavo Muys
  • 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: 6284447
    Abstract: A color photographic silver halide material which is developed as a negative, at least 90 mol % of the silver halides of which consist of AgCl, and which contains a compound of formula (I) or formula (II) in a light-insensitive layer which is further from the support than is each light—light sensitive layer, is distinguished by its improved color reproduction.
    Type: Grant
    Filed: April 7, 2000
    Date of Patent: September 4, 2001
    Assignee: Agfa-Gevaert
    Inventors: Cuong Ly, Dieter Rockser, Edgar Draber, Markus Geiger, Jürgen Heinecke, Randolph Trommer
  • Patent number: 6284449
    Abstract: A silver halide emulsion comprising silver halide grains is disclosed, in which at least 50% of total grain projected area is accounted for by silver halide regular crystal grains exhibiting a proportion of a (100) face per grain of not less than 50% and having an average iodide content of not more than 5 mol %; the silver halide grains having an internal high iodide phase having an average iodide content of not less than 7 mol % and accounting for 0.1 to 15% of the grain volume; the high iodide phase being in the region at a depth of from 7 to 27% from the (100) face, based on the distance between the center of a grain and the (100) face.
    Type: Grant
    Filed: December 15, 1999
    Date of Patent: September 4, 2001
    Assignee: Konica Corporation
    Inventors: Tomoyuki Nakayama, Tadahiro Nagasawa, Rieko Ren
  • Patent number: 6280915
    Abstract: A silver halide coated photographic material is disclosed comprising sensitized silver bromide or silver bromoiodide tabular grains having an average thickness of less than 0.30 &mgr;m, in at least one light-sensitive layer and which is characterised in that it further contains in the said light-sensitive layer and/or at least one non-light sensitive layer at least one polyoxyethylene compound comprising from about 20 to 100 mole percent recurring units of the formula (Ia) and 80 to 0 mole % recurring units of the formula and wherein R represents an aliphatic, aromatic, or heterocyclic group, and X represents a halogen.
    Type: Grant
    Filed: June 29, 1994
    Date of Patent: August 28, 2001
    Assignee: Agfa-Gevaert
    Inventors: Marc Van den Zegel, Jan Claes, Jean-Marie Dewanckele
  • 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: 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: 6258494
    Abstract: This invention relates to a photographic element comprising a transparent sheet having a developed photographic image on each side, adhesively connected to a reflective base.
    Type: Grant
    Filed: December 22, 1999
    Date of Patent: July 10, 2001
    Assignee: Eastman Kodak Company
    Inventors: Robert P. Bourdelais, Peter T. Aylward, Alphonse D. Camp
  • 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: 6232058
    Abstract: A high quality direct radiographic film is useful for dental care. The film contains relatively high silver coverage preferably coated on both sides of the support. It also contains sufficient silver halide desensitizer to reduce silver halide sensitivity to X-radiation by at least 0.02 log E. The combination of silver and desensitizer coverages provides sufficiently high photographic speed, excellent image quality and increased stability to background radiation sources.
    Type: Grant
    Filed: January 11, 2000
    Date of Patent: May 15, 2001
    Assignee: Eastman Kodak Company
    Inventors: Anthony Adin, Richard E. Beal, Franklin C. Brayer, Catherine C. Wideman
  • Patent number: 6218094
    Abstract: A light-sensitive silver halide photographic material has been provided comprising a support and on one or both sides thereof at least one light-sensitive silver halide emulsion layer, a gelatinous protective antistress layer and, adjacent thereto as an outermost layer, a gelatinous afterlayer characterized in that said afterlayer comprises at least one polymer latex, being a polybutylacrylate, a polybutylmethacrylate latex or a polyurethane latex, or a copolymer latex being a copolymer poly(butyl methacrylate) polyacrylamide N-substituted sulfo-isobutyl salt, in a ratio amount by weight of (co)polymer latex to gelatin from 0.2:1 up to 5:1 and a total amount of (co)polymer latex and gelatin of at least 0.10 g/m2.
    Type: Grant
    Filed: September 29, 1999
    Date of Patent: April 17, 2001
    Assignee: Agfa-Gevaert
    Inventors: Marc Van den Zegel, Hubert Vandenabeele, Eddy Michiels, Frank Louwet
  • Patent number: 6200723
    Abstract: High performance radiographic films exhibit visually adaptive contrast when imaged in radiographic imaging assemblies comprising an intensifying screen on both sides. These films have at least two silver halide emulsions (preferably tabular grains) on each side of a film support, and the emulsion closest to the film support on each side includes chemistry to control crossover. In addition, the films can be rapidly processed to provide the desired image whereby the upper scale contrast is at least 1.2 times the lower scale contrast. Thus, dense objects can be better seen at the higher densities of the radiographic image without any adverse sensitometric changes in the lower scale densities.
    Type: Grant
    Filed: February 28, 2000
    Date of Patent: March 13, 2001
    Assignee: Eastman Kodak Company
    Inventors: Robert E. Dickerson, Phillip C. Bunch
  • Patent number: 6190822
    Abstract: High performance, high contrast radiographic films exhibit visually adaptive contrast when imaged in radiographic imaging assemblies comprising an intensifying screen on both sides. These films having at least two silver halide emulsions on each side of a film support, and the emulsion closest to the film support on each side includes chemistry to control crossover and has higher photographic speeds than the other emulsions. In addition, the films can be rapidly processed to provide the desired image having visually adaptive contrast, i.e. the upper scale contrast is at least 1.7 times the lower scale contrast. Thus, dense objects can be better seen at the higher densities of the radiographic image without any adverse sensitometric changes in the lower scale densities. These films are useful for general purpose, high contrast radiographic imaging.
    Type: Grant
    Filed: February 28, 2000
    Date of Patent: February 20, 2001
    Assignee: Eastman Kodak Company
    Inventors: Robert E. Dickerson, Phillip C. Bunch
  • Patent number: 6143459
    Abstract: A photosensitive film assembly comprising;a polymeric support having first and second side, said support being reflective to non penetrating radiation; anda photosensitive layer on at least one of said first and second sides of said support.
    Type: Grant
    Filed: December 20, 1999
    Date of Patent: November 7, 2000
    Assignee: Eastman Kodak Company
    Inventor: Douglas L. Vizard
  • Patent number: 6093521
    Abstract: The invention relates to a photographic member comprising at least one photosensitive silver halide layer on the top of said member and at least one photosensitive silver halide layer on the bottom of said member, a polymer sheet comprising at least one layer of voided polyester polymer and at least one layer comprising nonvoided polyester polymer, wherein the imaging member has a percent transmission of between 38 and 42%, the imaging member further comprises tints, and the nonvoided layer is at least twice as thick as the voided layer.
    Type: Grant
    Filed: December 21, 1998
    Date of Patent: July 25, 2000
    Assignee: Eastman Kodak Company
    Inventors: Thomas M. Laney, Robert P. Bourdelais, Alphonse D. Camp, Peter T. Aylward
  • Patent number: 6080532
    Abstract: The invention relates to a photographic element comprising a transparent polymer sheet, at least one image layer on the topside and one image layer on the bottom side wherein said polymer sheet has a stiffness of between 20 and 100 millinewtons, and said photographic element has a spectral transmission of at least 90% and a reflection density less than 10%.
    Type: Grant
    Filed: September 17, 1998
    Date of Patent: June 27, 2000
    Assignee: Eastman Kodak Company
    Inventors: Alphonse D. Camp, Peter T. Aylward, Robert P. Bourdelais
  • Patent number: 6077654
    Abstract: A silver halide light sensitive motion picture photographic print element is disclosed comprising a support bearing on one side thereof: a primarily yellow dye image-forming unit comprising at least one blue-sensitive silver halide emulsion layer having associated therewith primary yellow dye-forming coupler and secondary cyan and magenta dye-forming couplers; a primarily cyan dye image-forming unit comprising at least one red-sensitive silver halide emulsion layer having associated therewith an effectively primary amount of cyan dye-forming coupler and effectively secondary amounts of magenta and yellow dye-forming couplers; and a primarily magenta dye image-forming unit comprising at least one green-sensitive silver halide emulsion layer having associated therewith an effectively primary amount of magenta dye-forming coupler and effectively secondary amounts of cyan and yellow dye-forming couplers; wherein the primary and secondary dye-forming couplers in each of the dye image-forming units are present in a
    Type: Grant
    Filed: December 23, 1998
    Date of Patent: June 20, 2000
    Assignee: Eastman Kodak Company
    Inventors: James P. Merrill, Mitchell J. Bogdanowicz, Charles P. Hagmaier
  • Patent number: 6071654
    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: September 17, 1998
    Date of Patent: June 6, 2000
    Assignee: Eastman Kodak Company
    Inventors: Alphonse D. Camp, Peter T. Aylward, Robert P. Bourdelais
  • Patent number: 6063555
    Abstract: A silver halide color photographic light-sensitive material is disclosed. The light-sensitive material comprises a transparent support having on one side thereof a cyan dye-forming coupler-containing red-sensitive silver halide emulsion layer, a magenta dye-forming coupler-containing green-sensitive silver halide emulsion layer, a yellow dye-forming coupler-containing blue-sensitive silver halide emulsion layer, a non-light-sensitive hydrophilic colloid layer and an invisible light-sensitive silver halide emulsion layer containing a dye forming coupler, a colored coupler or a DIR compound.
    Type: Grant
    Filed: January 15, 1998
    Date of Patent: May 16, 2000
    Assignee: Konica Corporation
    Inventors: Kuniaki Uezawa, Kaoru Onodera, Hideaki Haraga