Two Or More Radiation-sensitive Layers Containing Other Than That Characterized By The Composition Of A Single Sensitive Layer Patents (Class 430/502)
  • Patent number: 5705328
    Abstract: A silver halide photographic light sensitive material comprises a support and provided thereon, a silver halide emulsion layer, the support comprising a syndiotactic polystyrene, wherein the support has a temperature expansion coefficient of not more than 50.times.10.sup.-6 /.degree.C. and a humidity expansion coefficient of not more than 15.times.10.sup.-6 /% RH.
    Type: Grant
    Filed: August 22, 1996
    Date of Patent: January 6, 1998
    Assignee: Konica Corporation
    Inventor: Shigeru Shiozaki
  • Patent number: 5691129
    Abstract: The present invention is directed to a dye suitable for spectral sensitization of a photographic element. Specifically, the dye is a compound having the structure: ##STR1## wherein: R.sup.1, R.sup.2, R.sup.3, and R.sup.4 each independently represents H; halogen; alkyl of 1-6 carbons; aryl of 6-24 carbons; alkoxy of 1-6 carbons; carbonyl; or sulfonate; or R.sup.1 and R.sup.2, R.sup.2 and R.sup.3, or R.sup.3 and R.sup.4 taken together represent the atoms necessary to complete a six-membered carbocylic ring;R.sup.5 represents hydrogen, alkyl of 1-6 carbons or aryl of 6-24 carbons;R.sup.6, R.sup.7, and R.sup.8 independently represent alkyl 1-6 carbons; aryl of 6-24 carbons; or any pair of R.sup.6, R.sup.7 and R.sup.8 taken together represent a five- or six-member heterocyclic ring;X represents O, S, CH.dbd.CH, Se, Te or N--R.sup.10 ;Y represents O, S, or N--R.sup.9 ;Z represents O, S or Se;R.sup.9 represents alkyl of 1-6 carbons; or an aryl of 6-24 carbons;R.sup.
    Type: Grant
    Filed: November 12, 1996
    Date of Patent: November 25, 1997
    Assignee: Sterling Diagnostic Imaging, Inc.
    Inventors: Dietrich Max Fabricius, Ralf Hermann Harms, James Joseph Welter
  • Patent number: 5691130
    Abstract: A color recording photographic element is disclosed containing a support and, superimposed on the support, blue, green and red recording layer units. The layer unit nearest the support contains a high chloride tabular grain emulsion and an optionally esterified glycolic ether having a molecular weight of at least 300 and containing at least one thioether moiety. The layer unit farthest from the support is free of the optionally esterified glycol compound. The advantages realized are an increased imaging density range, increased sensitivity, and increased contrast.
    Type: Grant
    Filed: November 28, 1995
    Date of Patent: November 25, 1997
    Assignee: Eastman Kodak Company
    Inventors: Lois Ann Buitano, Richard Peter Szajewski
  • Patent number: 5656417
    Abstract: A process for multi-layer, co-coating preparation of a silver halide color light sensitive material comprising co-coating at least eight coating liquid compositions simultaneously onto a traveling support to form at least eight total layers comprising a lowermost layer adjacent to the support and at least seven outer layers adjacent to the lowermost layer, wherein the at least eight coating liquid compositions comprise a lowermost layer coating liquid composition and at least seven outer coating liquid compositions; the lowermost layer coating liquid composition has a viscosity of 15 to 100 cp; each outer layer coating liquid composition of the at least seven outer layer liquid compositions has a viscosity of at least 30 cp; and the at least seven outer layer coating liquid compositions have an arithmetic mean viscosity of 60 to 300 cp.
    Type: Grant
    Filed: October 6, 1994
    Date of Patent: August 12, 1997
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Akira Endoh, Masahiro Morikawa
  • Patent number: 5629142
    Abstract: A dual coated radiographic element is disclosed including at least one radiation-sensitive emulsion comprised of silver halide grains containing greater than 50 mole percent bromide and less than 4 mole percent iodide, based on silver, with greater than 50 percent of total grain projected area being accounted for by tabular grains having {111} major faces, a spectral sensitizing dye adsorbed to the surfaces of the silver halide grains, and hydrophilic colloid vehicle acting as a peptizer and a binder for the silver halide grains. At least the portion of the vehicle acting as a peptizer is a hydrophilic colloid derived from a water dispersible cationic starch.
    Type: Grant
    Filed: December 19, 1995
    Date of Patent: May 13, 1997
    Assignee: Eastman Kodak Company
    Inventor: Joe E. Maskasky
  • Patent number: 5612174
    Abstract: Disclosed are a photographic yellow dye-forming coupler of formula (I) and a photographic material containing one or more such yellow couplers. ##STR1## wherein R.sub.1 represents an alkyl group, a cycloalkyl group, an aryl group, an alkylamino group, an anilino group, or a heterocyclic group; R.sub.2 represents a hydrogen atom, a halogen atom, an aliphatic-oxy group, an aryloxy group, an aliphatic group, or an amino group; R.sub.3 represents an alkenyl group; R.sub.4 represents a substituent; m represents an integer of from 0 to 3; and X represents a hydrogen atom, or a group capable of being split off from the formula by the coupling reaction with an oxidation product of an aromatic primary amine developing agent. The couplers have a high solubility in solvents, and emulsions containing the couplers can be stored in cool for a long period of time without worsening the coloring property of the couplers.
    Type: Grant
    Filed: December 7, 1995
    Date of Patent: March 18, 1997
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Hiroo Takizawa, Yasuhiro Yoshioka, Masakazu Morigaki
  • Patent number: 5609978
    Abstract: A photographic element, is disclosed which includes a support and at least three silver halide emulsion layers, that records exposure information. The exposure information is recorded in three image-recording units and wherein the spectral sensitivities of said image-recording units are chosen such that the average color error, .DELTA.E*.sub.ab, is less than or equal to 3.1. .DELTA.E*.sub.ab is computed for a specified set of test colors of known spectral reflectance, and the light source is specified as D.sub.65. .DELTA.E*.sub.ab is the average CIE 1976 (L*a*b*) .DELTA.E*.sub.ab between the CIE 1976 (L*a*b*)-space coordinates of said test colors and the CIE 1976 (L*a*b*)-space coordinates corresponding to transformed exposure signals.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: March 11, 1997
    Assignee: Eastman Kodak Company
    Inventors: Edward J. Giorgianni, Brian E. Mittelstaedt, Jose E. Rivera, Richard A. Simon, Teresa A. Smith, James E. Sutton
  • Patent number: 5599657
    Abstract: A colour photographic silver halide material with a support, at least one red-sensitive silver halide emulsion layer containing at least one cyan coupler, at least one green-sensitive silver halide emulsion layer containing at least one magenta coupler, at least one blue-sensitive silver halide emulsion layer containing at least one yellow coupler, at least one interlayer Z-1 beneath the lowermost red-sensitive silver halide emulsion layer and/or at least one interlayer Z-2 beneath the lowermost green-sensitive silver halide emulsion layer, in which Z-1 and/or Z-2 contains a silver halide emulsion which contains tabular grains with an aspect ratio of>2, an average diameter of a sphere of equal volume of.gtoreq.0.3 .mu.m and a diameter of a circle of equal projected surface area of the tabular grains of at least 0.3 .mu.m, is distinguished by improved red and/or green sensitivity.
    Type: Grant
    Filed: October 24, 1995
    Date of Patent: February 4, 1997
    Assignee: Agfa-Gevaert AG
    Inventors: Detlef Brennecke, Johannes Willsau, Ralf B uscher, Hans-Ulrich Borst, Peter Bell, Lothar Endres
  • Patent number: 5582961
    Abstract: A photographic element, is disclosed which includes a support and at least three silver halide emulsion layers, that records exposure information. The exposure information is recorded in three image-recording units and wherein the spectral sensitivities of said image-recording units are chosen such that the average color error, .DELTA.E*.sub.ab, is less than or equal to 3.1. .DELTA.E*.sub.ab is computed for a specified set of test colors of known spectral reflectance, and the light source is specified as D.sub.65. .DELTA.E*.sub.ab is the average CIE 1976 (L*a*b*) .DELTA.E*.sub.ab between the CIE 1976 (L*a*b*)-space coordinates of said test colors and the CIE 1976 (L*a*b*)-space coordinates corresponding to transformed exposure signals.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: December 10, 1996
    Assignee: Eastman Kodak Company
    Inventors: Edward J. Giorgianni, Brian E. Mittelstaedt, Richard A. Simon, Teresa A. Smith, James E. Sutton
  • Patent number: 5576154
    Abstract: The invention involves a process for making photographic recording materials for radiography having comparable sensitivity and high visual resolution in the resulting x-ray images, whether used with green-emitting or blue-emitting intensifying screens. The invention also describes a process for making x-ray images by the use of such recording materials. The invention regulates the ratio of the silver halide coating's blue to green sensitivity by the addition of an aliphatic 2-amino-1-thio compound of Formula I: ##STR1## wherein R.sup.1 =alkyl of 1 to 5 carbons, aryl, alkylacyl of 1 to 5 carbons, H or arylacyl;R.sup.2, R.sup.3, R.sup.4, R.sup.5 =H, alkyl of 1 to 4 carbons or COR.sup.7 ;R.sup.6 =H or alkyl of 1 to 5 carbons,R.sup.7 =OH, NHR.sup.8, or O-R.sup.10 where R.sup.10 is an alkyl of 1 to 5 carbons;R8, R9=H or alkyl of 1 to 5 carbons;R.sup.1 and R.sup.6 taken together represent one to three methylene groups bridging the nitrogen and the sulfur; andR.sup.1 and R.sup.
    Type: Grant
    Filed: June 22, 1995
    Date of Patent: November 19, 1996
    Assignee: Sterling Diagnostic Imaging, Inc.
    Inventors: Thomas M ussig-Pabst, Alfred W orsching
  • Patent number: 5576162
    Abstract: Imaging elements, such as photographic, electrostatographic and thermal imaging elements, are comprised of a support, an image-forming layer and an electrically-conductive layer comprising a dispersion of carbon nanofibers in a film-forming binder. Use of carbon nanofibers provides a controlled degree of electrical conductivity and beneficial chemical, physical and optical properties which adapt the electrically-conductive layer for such purposes as providing protection against static or serving as an electrode which takes part in an image-forming process.
    Type: Grant
    Filed: January 18, 1996
    Date of Patent: November 19, 1996
    Assignee: Eastman Kodak Company
    Inventor: Kimon Papadopoulos
  • Patent number: 5576156
    Abstract: A radiographic element is disclosed having emulsion layers coated on opposite surfaces of a transparent film support. To facilitate rapid processing the emulsion layers are fully forehardened and less than 35 mg/dm.sup.2 of hydrophilic colloid is coated on each major surface. To reduce crossover and hydrophilic colloid, emulsions on the opposite sides of the support are each divided into two layers with the layer coated nearest the support containing a particulate dye capable of being decolorized during processing. Particulate dye and silver halide grains together account for between 30 and 70 percent of the total weight of the emulsion layers. Combined with the use of spectrally sensitized tabular grain emulsions crossover can be reduced to less than 15 percent while processing can be completed in less than 45 seconds. The distribution of hydrophilic colloid and silver halide grains chosen achieves low wet pressure sensitivity.
    Type: Grant
    Filed: January 29, 1996
    Date of Patent: November 19, 1996
    Assignee: Eastman Kodak Company
    Inventor: Robert E. Dickerson
  • Patent number: 5576161
    Abstract: A silver halide color photographic material improved in color forming properties and light fastness of color image is disclosed, comprising a support having thereon a light-sensitive silver halide emulsion layer and a nonlight-sensitive layer, wherein the nonlight-sensitive layer contains a UV absorbent and the silver halide emulsion layer contains a polyhydric alcohol.
    Type: Grant
    Filed: July 24, 1995
    Date of Patent: November 19, 1996
    Assignee: Konica Corporation
    Inventors: Motoi Nishimura, Hirokazu Sato, Hiroshi Kita
  • Patent number: 5576155
    Abstract: The invention relates to a fast-processing photographic recording material for medical radiography which can be processed within 30 to 60 seconds in a film processor and which has very good photographic and physical properties. The recording material hasa) a silver application of at least 5 g/M.sup.2,b) a weight ratio of binder coating weight in the silver halide emulsion layer to silver coating weight in the silver halide emulsion layer of at least 1.1,c) a mean grain volume of the silver halide grains used of less than 0.35 mm.sup.3 andd) a process water absorption of less than 20 g/M.sup.2.
    Type: Grant
    Filed: September 27, 1995
    Date of Patent: November 19, 1996
    Assignee: Sterling Diagnostic Imaging, Inc.
    Inventors: Thomas Muessig-Pabst, Manfred A. Schmidt
  • Patent number: 5576128
    Abstract: A color negative photographic film with at least one color record thereof having a mid-scale contrast less than or equal to 0.45, wherein the mid-scale contrast for the color record is defined as the slope of a straight line connecting a point C and and a point D on the characteristic curve of density versus log Exposure for the color record, where points C and D are located by defining a point A on the characteristic curve at a density level 0.1 above minimum density, a point B is located on the characteristic curve at an exposure value +1.0 Log Exposure beyond point A, and points C and D are located at exposure values -0.45 log Exposure and +0.45 log Exposure with respect to point B, respectively. Use of such a color negative film is particularly advantageous in making telecine transfers.
    Type: Grant
    Filed: December 5, 1994
    Date of Patent: November 19, 1996
    Assignee: Eastman Kodak Company
    Inventors: John T. Keech, John C. Brewer
  • Patent number: 5576160
    Abstract: A composite for radiography is disclosed which essentially consists of a) a silver halide photographic light-sensitive material comprising a transparent support and at least one light-sensitive silver halide emulsion layer provided on each side of the support, b) fluorescent screen A having a 80 kVp X-ray energy absorption of 40% or more and c) fluorescent screen B having a 80 kVp X-ray energy absorption of 50% or more and the absorption more than fluorescent screen A, the material being sandwiched between the screens A and B in such a manner that emulsion layer A is in close contact with screen A and emulsion layer B is in close contact with screen B, wherein the slope of the straight portion in the characteristic curve of emulsion layer A is less than that of emulsion layer B and emulsion layers A and B of the silver halide photographic light-sensitive material have sensitivity on an exposed side that an exposure necessary to give a density of the minimum density +0.5 is 0.027 to 0.040 lux.multidot.second.
    Type: Grant
    Filed: July 5, 1995
    Date of Patent: November 19, 1996
    Assignee: Konica Corporation
    Inventors: Kazuyoshi Goan, Haruhiko Sakuma, Takuji Hasegawa, Kazuhiro Iwasaki
  • Patent number: 5573892
    Abstract: Compounds of the formula I are suitable as photographic yellow couplers ##STR1## In formula I, Z.sub.1, Z.sub.2 mean residues to complete 5-, 6- or 7-membered rings of an aromatic or heteroaromatic nature; these rings may be substituted with substituents R.sup.1, R.sup.2, R.sup.3 and R.sup.4 ;X means H or a substituent which is released under chromogenic development conditions.
    Type: Grant
    Filed: October 25, 1995
    Date of Patent: November 12, 1996
    Assignee: AGFA-Gevaert AG
    Inventor: G unther Schenk
  • Patent number: 5571663
    Abstract: A silver halide light-sensitive material comprising a support having thereon at least four silver halide emulsion layers having different color sensitivity, wherein three layers of the silver halide emulsion layers each contains a specific coupler and the other silver halide emulsion layer contains coupler(s) capable of correcting colors so as to provide a substantially black color having a transmission density of 2.5 or more when all couplers on the support are reacted. A color filter comprising blue, green, red and black parts prepared by subjecting the above-described silver halide light-sensitive material to pattern exposure, color development, bleach-fixing and water washing.
    Type: Grant
    Filed: July 5, 1995
    Date of Patent: November 5, 1996
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Hiroyuki Hirai
  • 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: 5563027
    Abstract: A color reversal element having a red sensitive layer containing a cyan dye forming coupler, a green sensitive layer containing a magenta dye forming coupler, and a blue sensitive layer containing a yellow dye forming coupler, the red, green and blue sensitive layers each having a speed .gtoreq.120 as measured at a density of 0.3, a Dmax of .gtoreq.3.30 and a .increment.logE .ltoreq.1.85 measured from a density of 0.20 to 3.20, the Dmax and .increment.logE being measured following exposure and processing of the element. Daylight and tungsten balanced versions of the film are also provided. A method for processing such films and exposing them in electronic film writers is also provided. Film of the present invention allows a wide range of density values in an original film to be more faithfully reproduced and enable more faithful reproduction of colors recorded in the original scanned film.
    Type: Grant
    Filed: January 17, 1995
    Date of Patent: October 8, 1996
    Assignee: Eastman Kodak Company
    Inventors: Cheryl S. Johnston, John D. Baloga
  • Patent number: 5561038
    Abstract: A silver halide black and white photographic light sensitive material comprising a support having thereon at least two silver halide emulsion layers, a first silver halide emulsion layer being provided on a second silver halide emulsion layer, wherein the first silver halide emulsion layer comprises silver halide tabular grains containing 50 mol % or more chloride and having an average aspect ratio of 3 or more, the second silver halide emulsion layer comprising silver bromide grains or silver iodobromide grains containing 2 mol % or less iodide, and a swelling ratio of the total hydrophilic colloidal layers being 200% or less.
    Type: Grant
    Filed: August 29, 1995
    Date of Patent: October 1, 1996
    Assignee: Konica Corporation
    Inventor: Kazuyoshi Goan
  • Patent number: 5558979
    Abstract: A silver halide photographic material which has an excellent dimensional stability and which is easy in the register operation is disclosed. The silver halide photographic material comprises a support having provided thereon at least one silver halide emulsion layer, wherein the total amount of gelatin in the total hydrophilic colloid layers on the side having said emulsion layer and the total hydrophilic colloid layers on the opposite side thereto is 6 g/m.sup.2 or less, and the support is a styrene type polymer having a syndiotactic structure.
    Type: Grant
    Filed: February 22, 1995
    Date of Patent: September 24, 1996
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Kunio Ishigaki, Takashi Naoi
  • Patent number: 5541028
    Abstract: A method is disclosed for constructing a tone scale curve. In this curve, equal log exposure differences in an x-ray image of an object produce substantially equal brightness differences in a displayed image.
    Type: Grant
    Filed: February 2, 1995
    Date of Patent: July 30, 1996
    Assignee: Eastman Kodak Company
    Inventors: Hsien-Che Lee, Scott J. Daly, Richard L. VanMetter, Allen K. Tsaur
  • Patent number: 5541040
    Abstract: Disclosed is a positive type color light sensitive material comprising a support having thereon a mainly yellow image forming layer, a mainly magenta image forming layer and a mainly cyan image forming layer;wherein, when an exposure quantity-gives minimum density of +0.2 on a first layer selected from said three layer after developing in the main spectra sensitivity region of the first layer, a second layer selected from said three layers is given lower density with said exposure than a density without said exposure.The positive type color light sensitive material is capable of providing a color proof improved in the approximation degrees of an image quality to a printed printer.
    Type: Grant
    Filed: January 25, 1995
    Date of Patent: July 30, 1996
    Assignee: Konica Corporation
    Inventors: Susumu Okawauchi, Yasuo Tosaka, Yoshiyuki Nonaka, Keiichi Hoshino
  • Patent number: 5538842
    Abstract: There is disclosed a silver halide color photographic light-sensitive material which excels in a color reproduction and a light fastness at a low density part through a high density part and which is improved in a Y-stain at a background part. The silver halide color photographic light-sensitive material comprises a support and provided thereon at least one photographic constitutional layer, wherein at least one layer of the above photographic constitutional layers contains at least one of the compounds represented by the following Formula (I) and a compound represented by the following Formula (II) in the same layer: ##STR1## wherein R represents a hydrogen atom or a substituent; Z.sub.a, Z.sub.b, and Z.sub.c each represent any group of methine, substituted methine, .dbd.N--, or --NH--; Y represents a hydrogen atom or a group capable of splitting off upon a coupling reaction with an oxidation product of a developing agent; provided that a dimer or a polymer may be formed via R, Y, or Z.sub.a, Z.sub.b or Z.
    Type: Grant
    Filed: June 30, 1994
    Date of Patent: July 23, 1996
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Osamu Takahashi, Takehiko Sato
  • Patent number: 5512415
    Abstract: A high-contrast photographic element, adapted for use in the field of graphic arts, includes a hydrazide nucleator and an amine booster and comprises a silver halide emulsion layer which is capable of forming a latent image under conditions of use and a second silver halide emulsion layer which is not capable of forming a latent image under conditions of use.
    Type: Grant
    Filed: March 7, 1995
    Date of Patent: April 30, 1996
    Assignee: Eastman Kodak Company
    Inventors: Allison H. C. Dale, Roger H. Piggin, Michael B. Ledger, David Beaumond
  • Patent number: 5482813
    Abstract: A method for forming a radiological image using a silver halide photographic material comprising a transparent support having at least one silver halide emulsion layer on one side thereof and a backing layer on the opposite side to the silver halide emulsion layer, and a radiographic intensifying screen, wherein the radiographic intensifying screen has such characteristics that the absorbed dose is at least 25% of X-rays having an X-ray energy of 80 KVp, and the contrast transfer function (CTF) is at least 0.79 at a spatial frequency of 1 line/mm and at least 0.36 at a spatial frequency of 3 lines/mm.
    Type: Grant
    Filed: July 27, 1994
    Date of Patent: January 9, 1996
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Ito Tadashi
  • Patent number: 5472834
    Abstract: To eliminate the "pi-line" artefact after processing a silver halide industrial photographic X-ray material is disclosed comprising on at least one side of a support, at least one gelatino silver halide emulsion layer and a total amount of silver halide, corresponding to from 6 to 20 g of silver nitrate per square meter and per side, and at least one non-sensitive protective antistress coating, wherein said photographic material comprises at least one vinyl sulphone compound as a hardening agent and at least one polyoxyalkylene compound as a surfactant in at least one of its hydrophilic layers.
    Type: Grant
    Filed: April 5, 1994
    Date of Patent: December 5, 1995
    Assignee: Agfa-Gevaert, N.V.
    Inventors: Raymond Florens, Pieter Perdieus, Andre Roefs
  • Patent number: 5468600
    Abstract: A silver halide color photographic material is described, comprising a support having provided thereon at least one light-sensitive silver halide emulsion layer(s), wherein at least one of said silver halide emulsion layer(s) comprises a high boiling organic solvent represented by the following formula (SO): ##STR1## wherein Y represents a substituent group represented by the following formula (A) or (B): ##STR2## wherein R.sub.21 in the formula (A) represents an aliphatic or aryl group containing 9 to 40 carbon atoms, and R.sub.22 and R.sub.23 in the formula (B) each represents an aliphatic or aryl group containing 6 to 40 carbon atoms.
    Type: Grant
    Filed: July 15, 1994
    Date of Patent: November 21, 1995
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Toshiyuki Watanabe, Hiroo Takizawa
  • Patent number: 5466569
    Abstract: A color photographic material, at least one layer of which contains a compound of the formula (I) ##STR1## in which X means --NH--, --NR-- or --O--,R means alkyl, cycloalkyl or aryl,R.sub.1 means a chemical bond or a divalent bridging member,R.sub.2 and R.sub.3 mean alkyl, alkoxy, alkenyl, cycloalkyl, aryl or aryloxy, or two residues R.sub.2 or R.sub.3 mean the remaining atoms of a benzene ring condensed with the phenyl residue andm and n mean 0 to 3, wherein all alkyl, alkoxy, cycloalkyl, alkenyl, aryl and aryloxy residues may be further substituted and in each of the two phenyl residues a residue R.sub.1, R.sub.2 or R.sub.3 is in para position relative to the oxygen atom, is characterized by improved dye stability after processing.
    Type: Grant
    Filed: June 9, 1994
    Date of Patent: November 14, 1995
    Assignee: Agfa-Gevaert AG
    Inventors: Beate Weber, Jorg Hagemann, Markus Geiger
  • Patent number: 5462831
    Abstract: To eliminate the "pi-line" artifact after processing a method of image formation is disclosed in a silver halide industrial X-ray photographic material, comprising on at least one side of a support, at least one gelatin silver halide emulsion layer and a total amount of silver halide, corresponding to from 6 to 20 g of silver nitrate per square meter and per side, and at least one non-sensitive protective antistress coating, wherein said material further comprises a hardening agent different from a vinyl sulphone compound, preferably formaldehyde, and at least one polyoxyalkylene compound as a surfactant in at least one of its hydrophilic layers, and wherein after exposure to direct X-rays said material is subjected in an automatic processing machine to the steps of developing in a developer comprising at least one anionic alkylphenoxy polyalkyleneoxy phosphate ester surfactant, fixing in a fixer which may comprise at least one alpha-ketocarboxylic acid, rinsing and drying.
    Type: Grant
    Filed: April 5, 1994
    Date of Patent: October 31, 1995
    Assignee: Agfa-Gevaert, N.V.
    Inventors: Benedictus Jansen, Andre Roefs, Francis Sels, Pieter Perdieus, Raymond Florens
  • Patent number: 5462832
    Abstract: A novel method of forming radiation images, especially X-ray images of bones and gastric areas for medical examination, is disclosed.
    Type: Grant
    Filed: July 12, 1994
    Date of Patent: October 31, 1995
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Nobuyuki Iwasaki
  • Patent number: 5460916
    Abstract: Disclosed is a silver halide photographic material for X-ray photography which has at least one light-sensitive silver halide emulsion layer on each side of a transparent support and constitutes a radiation image-forming system in combination with two radiation-intensifying screens respectively arranged on the front and the back sides of the photographic material. The photographic material is characterized by having a crossover rate of at most 15% with respect to the light emitted from said intensifying screens, and by producing an image having a characteristic curve such that when drawn using crossed coordinates equal to each other in unit length, with diffusion density as ordinate (Y-axis) and common logarithm of exposure amount as abscissa (X-axis), the characteristic curve provides a point gamma value ranging from 2.7 to 4.2 at every point within the optical density (diffusion density) range of 1.6 to 2.0 and a point gamma value of at least 0.
    Type: Grant
    Filed: May 24, 1994
    Date of Patent: October 24, 1995
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Nobuyuki Iwasaki
  • Patent number: 5455139
    Abstract: Disclosed is a light-sensitive silver halide photographic material comprising a support having a first face and a second face, a first photographic component layer being provided on the first face and a second photographic component layer being provided on the second face, each of the first and second component layer comprising a silver halide emulsion layer, wherein; when an exposure dose at a position on the first face is an exposure dose giving a density of a fog density +1.60 after exposing from the first face side and developing the material, a density at a position on the second face corresponding to the position on the first face is fog +0.20 or less, and an amount of a light which transmitted through the first component layer and the support and reaching an interface between the support and the second component layer is 12 to 75% of a light to which the first face side of the material is exposed.
    Type: Grant
    Filed: November 16, 1994
    Date of Patent: October 3, 1995
    Assignee: Konica Corporation
    Inventors: Yasunori Wada, Masaaki Taguchi, Haruhiko Sakuma
  • Patent number: 5449599
    Abstract: A silver halide light-sensitive photographic material for applications in the field of mammography is disclosed which has an improved diagnostic value by an enhanced sharpness. The silver halide crystals to be used in the said material show a fog level, a toe contrast and an overall contrast that is, like the image quality, substantially uneffected by the processing conditions. The coating amount of silver halide crystals in the emulsion layer can be reduced to such an amount that an archivability of from 10 to 20 years can be assured in normal storage conditions. The X-ray material is suitable for rapid processing, without loss in sensitivity, within processing cycles of 45 or 38 seconds, wherein hardener-free processing solutions can be used.
    Type: Grant
    Filed: January 21, 1994
    Date of Patent: September 12, 1995
    Assignee: Agfa-Gevaert, N.V.
    Inventor: Luc J. Heremans
  • Patent number: 5447817
    Abstract: To eliminate the "pi-line" artefact after processing a method of image formation in a silver halide industrial X-ray photographic material is disclosed wherein said material comprises on at least one side of a support, at least one gelatino silver halide emulsion layer and a total amount of silver halide, corresponding to from 6 to 20 g of silver nitrate per square meter and per side, and at least one non-sensitive protective antistress coating and wherein said method proceeds by the steps of exposing said material to direct X-rays and processing the material in an automatic processing machine by development, fixing, rinsing and drying, characterized in that said material further comprises at least one vinyl sulphone compound as a hardening agent in at least one of its hydrophilic layers, that development occurs in a developer comprising as a surfactant at least one anionic alkylphenoxy and/or alkoxy polyalkyleneoxy phosphate ester, sulphate ester, alkyl carboxylic, sulphonic or phosphonic acid and/or a salt
    Type: Grant
    Filed: April 5, 1994
    Date of Patent: September 5, 1995
    Assignee: AGFA-Gevaert, N.V.
    Inventors: Raymond Florens, Pieter Perdieus, Peter Willems, Freddy Henderickx
  • Patent number: 5445927
    Abstract: A photographic silver halide material for industrial radiography comprises a film support and on one or both sides thereof a silver halide emulsion rich in silver chloride and a silver halide emulsion rich in silver bromide either in admixture in the same layer or in contiguous layers. The ratio by weight of colloid binder, e.g. gelatin, to silver halide (expressed as silver nitrate) is from 3:10 to 6:10 and the amount of silver halide corresponds to from 6 g to 20 g of silver nitrate per square meter and per side. The material has been forehardened to an extent such that when it is immersed in demineralised water of 25.degree. C. for 3 minutes there is absorbed less than 2.5 g of water per gram of binder. The material can be processed within a total processing time of less than 5 minutes with a developer and fixer being substantially free from hardening agents and the fixer being substantially free from ammonium ions.
    Type: Grant
    Filed: April 14, 1994
    Date of Patent: August 29, 1995
    Assignee: Agfa-Gevaert, N.V.
    Inventors: Raymond Florens, Pieter Perdieus
  • Patent number: 5441855
    Abstract: A color photographic material which contains in at least one blue-sensitive layer a yellow coupler and a compound of the formula (I) ##STR1## in which R.sub.1 means hydrogen or alkyl,R.sub.2 means hydrogen or alkyl,R.sub.3 means hydrogen or alkyl,1 means 1 to 20X ##STR2## or cycloalkene, R.sub.4 means hydrogen or alkyl,R.sub.5 means hydrogen or alkyl andn means 1 to 6,shows improved light-stability of the yellow dye obtained from said yellow coupler by exposure and processing.
    Type: Grant
    Filed: June 9, 1994
    Date of Patent: August 15, 1995
    Assignee: Agfa-Gevaert AG
    Inventors: Beate Weber, Jorg Hagemann, Gunter Helling, Markus Geiger
  • Patent number: 5436122
    Abstract: A silver halide color photographic light sensitive material comprising a support having thereon light-sensitive silver halide emulsion layers, and a nonlight-sensitive hydrophilic colloidal layer, wherein the color photographic material has a coating weight of silver of not more than 4.0 g per m.sup.2 of a photographic material and an ISO speed of 25 or more, and wherein a silver halide emulsion contained in at least one of the light-sensitive emulsion layers is spectrally sensitized by a process comprising (i) forming a dispersion of a substantially water-insoluble spectral sensitizing dye in the form of solid particles dispersed in an aqueous medium which is free from an organic solvent or a surfactant and (ii) incorporating the dispersion in the silver halide emulsion.
    Type: Grant
    Filed: May 24, 1994
    Date of Patent: July 25, 1995
    Assignee: Konica Corporation
    Inventor: Yoshiro Shigetomi
  • Patent number: 5429918
    Abstract: A silver halide color photographic material contains at least one hydroxypyridine compound of formulae (A), (B) and (C) in at least one layer on the support: ##STR1## The material is capable of providing a color image having an improved fastness to light.
    Type: Grant
    Filed: August 19, 1993
    Date of Patent: July 4, 1995
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Nobuo Seto, Masakazu Morigaki
  • Patent number: 5420846
    Abstract: An information recording medium includes an information recording layer on which at least information is to be recorded by irradiating light, and a light transmission restricting layer which has a plurality of nonlinear transmission characteristics or nonlinear reflection characteristics for the intensity of the light irradiated and which has an optical material for restricting the transmission or reflection of the light according to the respective characteristics when the light is irradiated onto the information recording layer. An information recording and reproducing unit uses the information recording medium and includes an information recording position setting unit for deciding a position at which information is to be recorded on the information recording medium by detecting a direction of an easy magnetization axis.
    Type: Grant
    Filed: February 23, 1993
    Date of Patent: May 30, 1995
    Assignee: Hitachi, Ltd.
    Inventors: Hisataka Sugiyama, Akira Arimoto, Motoyasu Terao, Norio Murase, Kimio Tatsuno, Masahiko Takahashi, Fumiyoshi Kirino, Fumio Kugiya
  • Patent number: 5418118
    Abstract: The invention provides a cyan color producing silver halide emulsion layer or a magenta color producing silver halide emulsion layer wherein said at least one layer has an exposure range of at least 0.6 log E from the point where the instantaneous contrast is 1.0 and wherein the instantaneous contrast of said layer increases as a function of increasing exposure over at least 70 percent of said exposure range.
    Type: Grant
    Filed: February 18, 1994
    Date of Patent: May 23, 1995
    Assignee: Eastman Kodak Company
    Inventors: James L. Edwards, Eric L. Bell, Benjamin T. Chen, Richard L. Parton
  • Patent number: 5415980
    Abstract: A method of forming a photographic image comprising imagewise exposing a silver halide color photographic material comprising a support having thereon a cyan color image forming layer, a magenta color image forming layer and an yellow color image forming layer, wherein the cyan color image forming layer in the photographic material contains silver halide emulsion grains having a silver chloride content of 95 mol % or more and containing substantially no silver iodide and contains a color sensitizing dye of the following general formula (I), ##STR1## wherein the terms are as defined in the specification and color developing the exposed material with a color developer, wherein the color developer has a chloride ion content of from 3.5.times.10.sup.-2 to 1.5.times.10.sup.-1 mol/liter and a bromide ion content of from 1.5.times.10.sup.-5 to 1.0.times.10.sup.-3 mol/liter.
    Type: Grant
    Filed: March 25, 1994
    Date of Patent: May 16, 1995
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Naoto Ohshima
  • Patent number: 5413902
    Abstract: A color light-sensitive material comprising at least three light-sensitive layers having different color-sensitivity from one another provided on a support. Each layer comprises a combination of at least a light-sensitive silver halide, a binder and a dye-providing compound. At least one layer thereof has a spectral sensitization peak in at least two wavelength regions, the peaks in the at least two wavelength regions being at least 50 nm away from each other and at least one spectral sensitization peak thereof exists in the wavelength region of 700 nm or above.
    Type: Grant
    Filed: December 2, 1992
    Date of Patent: May 9, 1995
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Hiroshi Hara, Takanori Hioki, Keiichi Adachi
  • Patent number: 5413901
    Abstract: A radiographic film package for non-destructive testing purposes has been developed, comprising a radiographic film sheet which is composed of a film support coated at both sides with one or more silver halide emulsion layer(s) and one or more non-light-sensitive protective antistress coating(s) thereover, and a wrapper around said film sheet which is light-opaque and air-tight, and which comprises a heat-sealable thermoplastic layer at the inner side of the wrapper, a transparent polymer layer at the outer side of the wrapper and a layer of aluminum located between said transparent polymer layer and said heat-sealable thermoplastic layer, and wherein at least one antistatic layer coating is provided between the said thermoplastic layer of said wrapper and the emulsion layers of said film sheet.
    Type: Grant
    Filed: November 16, 1993
    Date of Patent: May 9, 1995
    Assignee: Agfa-Gevaert, N.V.
    Inventors: Raymond Florens, Hubert Vandenabeele, Paul Wouters
  • Patent number: 5407790
    Abstract: A system for orthopedic imaging is disclosed which consists of a supply of low crossover sensitometrically asymmetric radiographic elements and cassettes with various front and back intensifying screens to produce optimal bone images and useful images of surrounding flesh.
    Type: Grant
    Filed: February 4, 1994
    Date of Patent: April 18, 1995
    Assignee: Eastman Kodak Company
    Inventors: Robert E. Dickerson, Phillip C. Bunch
  • Patent number: 5399470
    Abstract: Radiographic elements and assemblies are disclosed. The radiographic element has silver halide emulsion layer units coated on opposite sides of a film support, and are constructed to minimize crossover during exposure by the intensifying screens. The minimal crossover radiographic elements record both bone and soft tissue structure because a silver halide emulsion layer unit on one side of the support is chosen to exhibit an emission and contrast exceeding that of another silver halide emulsion layer unit on the opposite side of the support. Radiographic assemblies consisting of the radiographic elements and various front and back intensifying screens produce clear and useful X-ray images of the various bones and surrounding soft tissue structures of the body.
    Type: Grant
    Filed: February 4, 1994
    Date of Patent: March 21, 1995
    Assignee: Eastman Kodak Company
    Inventors: Robert E. Dickerson, Phillip C. Bunch
  • Patent number: 5397687
    Abstract: The preparation of x-ray materials, especially suitable for non-destructive testing applications, is described. The emulsion layers of said material are comprising silver halide emulsion grains containing at least 75 mole % of silver chloride and less than 25 mole % of silver bromide and are characterized by a ratio between the amount of gelatin and the amount of silver halide, being expressed as the equivalent amount of silver nitrate, of less than 0.6. Hardening of said material is performed in such a way that the amount of demineralized water of 25.degree. C. absorbed in 3 minutes is less than 2.5 g per gram of gelatin present in said material. A rapid processing system is available with a total processing time of less than 3 minutes with a developer and fixer being substantially free from hardening agents and the fixer being substantially free from ammonium ions.
    Type: Grant
    Filed: December 14, 1993
    Date of Patent: March 14, 1995
    Assignee: Agfa-Gevaert, N.V.
    Inventors: Peter Willems, Freddy Henderickx, Gino De Rycke, Romain Bollen
  • Patent number: 5397674
    Abstract: A radiation sensitized paper having a polyester film, a coating layer which contains a water-soluble or water-dispersible resin and is formed on a surface of the polyester film, a resin layer which is formed on the coating layer and a fluorescent material layer which is formed on the resin layer, in which adhesion of the fluorescent material layer is good.
    Type: Grant
    Filed: December 17, 1992
    Date of Patent: March 14, 1995
    Assignee: Diafoil Hoescht Company Limited
    Inventors: Yoshihide Ozaki, Satoshi Otonari, Masahiro Kita
  • Patent number: 5395732
    Abstract: A silver halide photographic material is disclosed, which comprises (a) at least one light-sensitive silver halide emulsion layer containing a hydrazine derivative and (b) a hydrophilic colloid layer which is different from the light-sensitive silver halide emulsion layer and which contains a redox compound capable of releasing a development inhibitor as a result of oxidation.
    Type: Grant
    Filed: June 4, 1992
    Date of Patent: March 7, 1995
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Kazunobu Katoh, Morio Yagihara, Takahiro Goto