Two Or More Radiation-sensitive Layers Containing Other Than That Characterized By The Composition Of A Single Sensitive Layer Patents (Class 430/502)
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Patent number: 5391472Abstract: 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: GrantFiled: December 8, 1993Date of Patent: February 21, 1995Assignee: AGFA-Gevaert, N.V.Inventors: Bavo Muys, Dirk Quintens, Jozef Boeykens, Etienne Van Thillo, Geert Defieuw
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Patent number: 5391469Abstract: Radiographic elements are disclosed each containing a support and, coated on the support, at least two high tabularity tabular grain emulsions. The tabular grains coated on the support exhibit a face centered cubic crystal lattice structure formed by silver bromide with a selected portion of the tabular grains additionally containing iodide substantially uniformly distributed through the crystal lattice structure in an overall concentration of at least 0.5 mole percent with the iodide concentration at any one grain site being less than 5 mole percent. The proportion of the tabular grains selected to contain iodide as well as the distribution of iodide within the tabular grains results in a reduction in pressure induced variance of radiographic imaging response as a function of applied pressure, such as that inadvertently applied during film handling and processing.Type: GrantFiled: October 27, 1993Date of Patent: February 21, 1995Assignee: Eastman Kodak CompanyInventor: Robert E. Dickerson
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Patent number: 5389503Abstract: A method is disclosed of obtaining from an imagewise exposed photographic element separate records of the imagewise exposure to each of the blue, green and red portions of the spectrum comprising photographically processing an imagewise exposed photographic element comprised of a sequence of superimposed blue, green and red recording silver halide emulsion layer units that produce images of the same hue upon processing. A first interlayer overlies the emulsion layer unit nearest the support for transmitting to it imagewise exposing radiation this emulsion layer unit is intended to record and for absorbing after photographic processing scanning radiation within at least one wavelength region. A second interlayer underlies the emulsion layer unit farthest from the support for transmitting to the underlying emulsion layer units exposing radiation they are intended to record and for absorbing after photographic processing scanning radiation within at least one wavelength region.Type: GrantFiled: February 22, 1994Date of Patent: February 14, 1995Assignee: Eastman Kodak CompanyInventors: Gareth B. Evans, Christopher B. Rider, Michael J. Simons
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Patent number: 5382499Abstract: A photographic film is disclosed particularly adapted for underwater photography. The film is comprised of a film support, a blue recording layer unit capable of forming a yellow dye image, a green recording layer unit capable of forming a magenta dye image, and a red recording layer unit capable of forming a cyan dye image. At an exposure temperature of 5500.degree. K. and an optical density of 0.8 above minimum density the red recording layer unit exhibits a speed that is (T/10) log E greater than that of the green recording layer unit, where E is exposure in lux-seconds and T is the light transmission distance in meters through water required to match the speed of the red recording layer unit to the speed of the green recording layer unit, T being in the range of from 1.5 to 15 meters.Type: GrantFiled: August 31, 1993Date of Patent: January 17, 1995Assignee: Eastman Kodak CompanyInventors: Brian W. Keelan, Robert Niklewicz, Diane P. Libby, John V. Nelson
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Patent number: 5382501Abstract: Disclosed is a silver halide color photographic light-sensitive material comprising a support having thereon a red-sensitive layer, a green-sensitive layer and a blue-sensitive layer, wherein said blue-sensitive layer comprises three or more silver halide emulsion layers, wherein the difference between the average silver iodide content of said emulsion contained in the highest sensitivity layer of said blue-sensitive layers and the average silver iodide content of said emulsion contained in the lowest sensitivity layer of said blue-sensitive layers is represented by Equation 1, and the sum total of the silver halides contained in said silver halide color light-sensitive material is not more than 9.0 g/m.sup.2 in terms of metal silver;Equation 1Average silver iodide content of the highest sensitivity layer -average iodide content of the lowest sensitivity layer.ltoreq.6 mol %.Type: GrantFiled: November 12, 1992Date of Patent: January 17, 1995Assignee: Konica CorporationInventor: Hiroshi Inoie
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Patent number: 5380636Abstract: The present invention relates to a symmetrical radiographic assembly comprising:a double side radiographic element which comprises a support and hydrophilic colloid layers coated on each side of said support, andan intensifying screen adjacent to each side of said radiographic element,wherein on each side of said support are coated at least two silver halide emulsion layers having a speed difference of at least 0.5 logE and an average contrast difference of at least 0.Type: GrantFiled: September 2, 1993Date of Patent: January 10, 1995Assignee: Minnesota Mining & Manufacturing CompanyInventors: Pierfiore Malfatto, Sergio Pesce, Elio Cavallo
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Patent number: 5372921Abstract: A high-contrast room-light-handleable black-and-white silver halide photographic element that is especially useful in the field of graphic arts is comprised of a support, an imaging layer containing doped silver halide grains with a mean grain size of less than 0.12 micrometers, a print-out layer containing doped silver halide grains with a mean grain size in the range of from 0.14 to 0.4 micrometers, and a third set of doped silver halide grains with a mean grain size of less than 0.12 micrometers distributed within the print-out layer or within a separate safelight protection layer. Dopant levels are controlled so that the photographic speed of the imaging layer is higher than the photographic speed of the print-out layer and so that the photographic speed of the third set of silver halide grains is less than that of the imaging layer.Type: GrantFiled: November 2, 1993Date of Patent: December 13, 1994Assignee: Eastman Kodak CompanyInventors: Anthony D. Gingello, Ronald J. Schmidt
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Patent number: 5370968Abstract: Photocurable elements which are useful for preparing flexographic printing plates are provided which comprise a printing layer and a contiguous base layer, the printing layer comprising about 40 to 95 parts by weight of an elastomeric block copolymer, about 5 to 60 parts by weight of a second elastomeric polymer which is incompatible with the block copolymer, a photopolymerizable monomer, and a photoinitiator. The printing layer preferably also comprises an actinic radiation scattering and absorbing pigment.Also provided are relief printing plates prepared from the photocurable elements. The printing plates have a tack-free surface having excellent ink transfer properties, abrasion resistance, and solvent resistance. A high level of exposure latitude may also be provided in the photocurable elements of the invention.Type: GrantFiled: February 15, 1994Date of Patent: December 6, 1994Assignee: W.R. Grace & Co.-Conn.Inventors: William K. Goss, Michael W. Yang
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Patent number: 5370977Abstract: Dental X-ray films for the direct absorption of x-radiation are disclosed in which silver halide emulsion layers are coated on the opposite faces a transparent film support. To achieve direct absorption of X-radiation with the low image noise levels required for dental diagnostics while enhancing image invariance as a function of processing solution seasoning silver halide grains containing less than 5 mole percent iodide, based on silver, forming the emulsion layers are coated on each face of the support at a silver coverage of greater than 7.5 g/m.sup.2, greater than 75 percent of total grain projected area being accounted for by tabular grains having an average equivalent circular diameter of less than 5.0 .mu.m, an average thickness of less than 0.36 .mu.m, and an average aspect ratio of at least 5.Type: GrantFiled: November 17, 1993Date of Patent: December 6, 1994Assignee: Eastman Kodak CompanyInventor: Miriam H. Zietlow
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Patent number: 5354648Abstract: A radiographic assembly comprising:a radiographic element which comprises a support and a front and back pair of silver halide emulsion layers coated on the opposite sides of the support, anda front and back pair of intensifying screens adjacent said front and back emulsion layers, respectively,wherein at least one of said silver halide emulsion layers shows a swelling index lower than 140% and a melting time of from 45 to 120 minutes, and the contrast difference between said pair of silver halide emulsion layers is at least 0.5,wherein the X-ray stimulated light emission difference between said pair of intensifying screens is at least 0.6 IogE, andwherein the average imagewise cross-over of said radiographic element is lower than 5% at optical density of from 0.5 to 1.75 and in the range of from 5 to 15% at optical density of from 1.75 to 3.25, said imagewise cross-over being measured according to the formula described in the specificaton.Type: GrantFiled: June 7, 1993Date of Patent: October 11, 1994Assignee: Minnesota Mining and Manufacturing CompanyInventors: Marco Bucci, Renzo Torterolo, Pierfiore Malfatto, Marco Beruto
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Patent number: 5350651Abstract: A method is disclosed of obtaining from an imagewise exposed photographic element separate records of the imagewise exposure to each of the blue, green and red portions of the spectrum comprising photographically processing an imagewise exposed photographic element comprised of a sequence of superimposed blue, green and red recording silver halide emulsion layer units that produce images of the same hue upon processing (e.g., lacking an incorporated dye-forming coupler). A first interlayer overlies the emulsion layer unit nearest the support for transmitting to it imagewise exposing radiation this emulsion layer unit is intended to record and for absorbing after photographic processing scanning radiation within at least one wavelength region.Type: GrantFiled: July 16, 1993Date of Patent: September 27, 1994Assignee: Eastman Kodak CompanyInventors: Gareth B. Evans, Christopher B. Rider, Michael J. Simons
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Patent number: 5350664Abstract: A method is disclosed of obtaining from an imagewise exposed photographic element separate records of the imagewise exposure to each of the blue, green and red portions of the spectrum comprising photographically processing an imagewise exposed photographic element comprised of a sequence of superimposed blue, green and red recording silver halide emulsion layer units at least two of which produce images of the same hue upon processing (e.g., lacking an incorporated dye-forming coupler), and obtaining separate blue, green and red exposure records from the photographic element. The photographic element is additionally comprised of, interposed between the two emulsion layer units, an interlayer unit for transmitting to the emulsion layer unit of the two units which is nearer the support, electromagnetic radiation that this emulsion layer unit is intended to record and capable, after processing, of reflecting electromagnetic radiation within at least one wavelength region.Type: GrantFiled: July 16, 1993Date of Patent: September 27, 1994Assignee: Eastman Kodak CompanyInventor: Michael J. Simons
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Patent number: 5350650Abstract: A method is disclosed of obtaining from an imagewise exposed photographic element separate records of the imagewise exposure to each of the blue, green and red portions of the spectrum comprising photographically processing an imagewise exposed photographic element comprised of a sequence of superimposed blue, green and red recording silver halide emulsion layer units that produce images of the same hue upon processing (e.g., units lacking a dye-forming coupler). A first interlayer unit overlies the emulsion layer unit nearest the support and is capable of transmitting to it imagewise exposing radiation this emulsion layer unit is intended to record. A second interlayer unit underlies the emulsion layer unit farthest from the support and is capable of transmitting to the emulsion layer units lying nearer the support imagewise exposing radiation these emulsion layer units are intended to record.Type: GrantFiled: July 16, 1993Date of Patent: September 27, 1994Assignee: Eastman Kodak CompanyInventors: John Gasper, Gareth B. Evans, Christopher B. Rider, Michael J. Simons
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Patent number: 5330875Abstract: A lithographic printing plate precursor and process for its utilization have been discovered through which negative and positive original images can be printably reproduced on the plate precursor in substantially fewer development steps. The precursor plate is exposed sequentially to either the negative or positive original with the resultant image subsequently developable in a single process or step. The process is achieved by using a precursor plate having two coatings of significantly different photographic sensitivity to light, i.e., speed as characterized by "camera speed" or "contact speed" and imagewise exposing the originals in sequence to alternative speeds. The contact speed coating may be negative-working or positive working while the camera speed coating is negative-working. The camera speed coating is developed followed by exposure of the contact speed coating. Images produced at camera speed are removed and non-image bearing portions of the contact speed coating are removed.Type: GrantFiled: May 5, 1993Date of Patent: July 19, 1994Assignee: Sun Chemical CorporationInventors: Michael W. Adelman, Robert W. Hallman, Suck-Ju Hong, Ken-Ichi Shimazu, Burton H. Waxman
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Patent number: 5310636Abstract: A silver halide photographic material having less roller marks and a rapid drying speed while maintaining a high sensitivity, and a development processing method therefor is disclosed. The silver halide photographic material comprising a support having, on at least one side thereof, two or more light-sensitive silver halide emulsion layers comprising a binder and a silver halide emulsion having a silver iodide content of 1 mol % or less, wherein the silver iodide content of the emulsion layer closest to the support is less than the silver iodide content of any of the emulsion layers further from the support than the emulsion layer closest to the support.Type: GrantFiled: October 28, 1991Date of Patent: May 10, 1994Assignee: Fuji Photo Film Co., Ltd.Inventors: Hideki Ohmatsu, Rikio Inoue
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Patent number: 5310637Abstract: A method of reducing the tendency toward formation of ripple imperfections in the coating of multilayer photographic elements is disclosed. Coating compositions are prepared for upper, middle, and lower gelatin-containing layers of a layered mass. The middle layer has a gelatin concentration within three weight percent of each of the upper and lower layers and the upper, middle, and lower layers each have a viscosity that differs from a norm by no more than 15%. A laminar flow of a layered mass including the coating compositions is formed and then received as a layered coating on a moving support. A multilayer photographic element is also disclosed.Type: GrantFiled: April 14, 1992Date of Patent: May 10, 1994Assignee: Eastman Kodak CompanyInventors: Mark R. Kurz, Steven J. Weinstein, Kenneth J. Ruschak
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Patent number: 5298374Abstract: There is disclosed a silver halide color photographic material which comprises a hydrophilic colloid layer, on a paper base, containing a compound selected from the group consisting of sparingly water-soluble epoxy compounds represented by formula (I), (II), or (III) given below and a dye-forming coupler in a layer on a base wherein the pH of raw paper is 5 to 9. ##STR1## wherein R.sup.1, R.sup.2, and R.sup.3 each represent an alkyl group or a halogen atom, L.sup.1 and L.sup.2 each represent a divalent aliphatic organic group, M represents an oxygen or nitrogen atom, A represents a polyvalent linking group, a, b, and c each are an integer of 0 to 4, x and y each are a real number of 0 to 20, l is 1 or 2, and m is an integer of 2 to 4.Type: GrantFiled: August 20, 1991Date of Patent: March 29, 1994Assignee: Fuji Photo Film Co., Ltd.Inventors: Hideki Tomiyama, Akira Kase
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Patent number: 5290655Abstract: There is disclosed a method for forming an X-ray image formed with less exposure than is customary and having an excellent resolution. The X-ray image can be formed by subjecting a light-sensitive material comprising a support, having provided thereon a light-sensitive silver halide emulsion layer containing a silver halide emulsion sensitized with a sensitizing dye represented by the following Formula (I) on only one side of the support to photographing via a green color emission fluorescent screen with a soft X-ray emitted from an X-ray generating device with a tube voltage of 25.sup.kv to 40.sup.kv. In the characteristic curve represented by a rectangular coordinate constituted by optical density and logarithmic exposure, the average gradation shown by the gradient of a line drawn by connecting the point at which 0.25 is added to the minimum density (hereinafter referred to as Dmin) to the point at which 2.0 is added to Dmin is set at 2.8 to 3.Type: GrantFiled: August 13, 1992Date of Patent: March 1, 1994Assignee: Fuji Photo Film Co., Ltd.Inventor: Nobuyuki Iwasaki
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Patent number: 5288589Abstract: The use of a two layer photoimageable, aqueous processable, resist with an amphoteric binder in the layer laminated directly to a printed circuit board provides a permanent coating with improved adhesion throughout the lamination process while maintaining other desirable properties such as storage stability and circuit encapsulation.Type: GrantFiled: December 3, 1992Date of Patent: February 22, 1994Inventors: Mark R. McKeever, Karuppiah Chandrasekaran
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Patent number: 5279933Abstract: A high-contrast room-light-handleable black-and-white silver halide photographic element that is especially useful in the field of graphic arts is comprised of a support, an imaging layer containing doped silver halide grains with a mean grain size of less than 0.12 micrometers, and a print-out layer containing doped silver halide grains with a mean grain size in the range of from 0.14 to 0.4 micrometers. The element utilizes very slow speed emulsions which render it capable of being handled in room light and is able to print-out a visible image on normal exposure and develop to full density upon being processed in conventional developing solutions.Type: GrantFiled: February 3, 1993Date of Patent: January 18, 1994Assignee: Eastman Kodak CompanyInventors: Anthony D. Gingello, Ronald J. Schmidt, Richard J. Kapusniak
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Patent number: 5268251Abstract: A light sensitive silver halide photographic material for the use of X-ray photography, wherein the effective contrast characteristics of the photographic material can be changed as required for the type image being exposed, as a function of the number and disposition of fluorescent intensifying screens. The photographic material has a support carrying first and second emulsion layers on each side thereof. The first layer has a maximum density and sensitivity higher than that of the second layer; the second layer has a density of not more than 0.2 when exposed from the side of the first layer with sufficient irradiation to give the first layer a density of 1.0; and the slope connecting two points corresponding to densities of 0.8 and 1.3 above the fog or baseline on a characteristic curve of the first layer is more than the slope of a line connecting two points of 0.3 and 0.5 above the fog or baseline on a characteristic curve of the second layer.Type: GrantFiled: June 19, 1992Date of Patent: December 7, 1993Assignee: Konica CorporationInventor: Haruhiko Sakuma
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Patent number: 5266450Abstract: A silver halide photographic light-sensitive material comprising a support, and a plurality of silver halide emulsion layers formed on the support, at least one of the emulsion layers containing regular silver halide grains, at least 30% or more of which have dislocation lines internally, and the sensitivity specks in each of the grains having dislocation lines being distributed with the maximal value at the depth of about at least about 2 nm and less than 50 nm from the surface of the silver halide grains. The regular silver halide grains have a diameter of about 0.1 to 5.0 .mu.m, a variation coefficient of 20% or less in terms of the distribution of their sizes. Each of the grains has a surface comprising, mainly, a (100) face. The grains have high sensitivity achieved by increasing latent image forming efficiency, not light absorption. The light-sensitive material has a high storage stability.Type: GrantFiled: June 18, 1992Date of Patent: November 30, 1993Assignee: Fuji Photo Film Co., Ltd.Inventor: Hiroshi Takehara
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Patent number: 5252428Abstract: A photoresin relief printing plate comprising a support and a photoresin relief portion disposed thereon, said relief portion having a thickness of not greater than 8 mm and comprising an upper photoresin layer and a lower photoresin layer, wherein said upper photoresin layer has a thickness of at least 2 .mu.m and a Young's modulus of not greater than 650 kg/cm.sup.2 and said lower photoresin layer has a thickness which is greater than the Young's modulus of said upper photoresin layer and a thickness which is greater than the Young's modulus of said upper photoresin layer. The photoresin relief printing plate exhibits not only excellent inking and ink transferability even in solid images, but also excellently less broadening of printed images and excellent image reproducibility, even if the printing operation is performed using an ordinary relief printing machine having poor machine accuracy.Type: GrantFiled: April 23, 1992Date of Patent: October 12, 1993Assignee: Asahi Kasei Kogyo Kabushiki KaishaInventors: Tadashi Kawamoto, Yuji Aoki
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Patent number: 5252443Abstract: An asymmetrical radiographic element is disclosed comprised of a transparent film support, green sensitized silver halide emulsion layer units of differing sensitometric characteristics coated on opposite sides of the film support, and a processing solution decolorizable means for reducing crossover to less than 10 percent. The element is positioned between intensifying screens and mounted in a cassette for exposure to X-radiation. A processing solution decolorizable pentamethineoxonol dye with insignificant absorption at 550 nm is incorporated into an overcoat layer to distinguish which of the emulsion layer units is positioned nearest a source of X-radiation during exposure.Type: GrantFiled: February 3, 1992Date of Patent: October 12, 1993Assignee: Eastman Kodak CompanyInventor: Robert E. Dickerson
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Patent number: 5252442Abstract: A radiographic element is disclosed comprised of a film support capable of transmitting radiation to which the radiographic element is responsive having opposed major surfaces, and, coated on the opposed major surfaces, spectrally sensitized high tabularity tabular grain emulsion layer units, and, interposed between each of the emulsion layer units and the support, means for absorbing radiation to which said emulsion layer units are responsive. The emulsion layer units exhibit a coefficient of variation of less than 15 percent, based on the total grain population having an equivalent circular diameter of greater than 0.1 .mu.m, and greater than 97 percent of the projected area of grains having an equivalent circular diameter of greater than 0.1 .mu.m is accounted for by tabular grains having a mean thickness of less than 0.3 .mu.m and a halide content of from 0 to 5 mole percent chloride, from 0 to 5 mole percent iodide, and from 90 to 100 mole percent bromide, based on total silver.Type: GrantFiled: March 12, 1992Date of Patent: October 12, 1993Assignee: Eastman Kodak CompanyInventors: Robert E. Dickerson, Allen K. Tsaur
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Patent number: 5250403Abstract: Novel tabular grain emulsions and a process for their preparation are disclosed in which silver bromoiodide tabular grains account for greater than 97 percent of total grain projected area and the coefficient of variation of the total grain population is less than 25 percent. This is achieved by forming in a first reaction vessel and transporting to a second reaction vessel a population of silver bromide grain nuclei in the form of regular octahedra having an equivalent circular diameter of less than 40 nanometers and a coefficient of variation of less than 50 percent and in the second reaction vessel converting the grain nuclei into a grain population containing parallel twin planes in more than 90 percent of the grains, so that upon further growth silver bromoiodide tabular grains of desired properties can be realized.Type: GrantFiled: February 27, 1992Date of Patent: October 5, 1993Assignee: Eastman Kodak CompanyInventors: Michael G. Antoniades, Richard L. Daubendiek, David E. Fenton, Jeffrey L. Hall, Ramesh Jagannathan
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Patent number: 5246824Abstract: Light-sensitive silver halide photographic elements are disclosed comprising a support and silver halide emulsion layer or layers, wherein at least one of said silver halide emulsion layers contains tabular silver halide grains having an average diameter:thickness ratio of at least 3:1 and highly deionized gelatin hardened with a compound of formula (CH.sub.2 .dbd.CH--SO.sub.2 --).sub.n --A, wherein A is an n-valent organic group containing at least one hydroxy group and n is 2,3 or 4.The light-sensitive materials can be advantageously used in high temperature processing in automatic processors which include transporting rollers and have good characteristics of resistance to pressure marking.Type: GrantFiled: January 22, 1992Date of Patent: September 21, 1993Assignee: Minnesota Mining and Manufacturing CompanyInventors: Gerolamno Delfino, Riccardo Gallesio
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Patent number: 5238795Abstract: A light-sensitive silver halide photographic material is disclosed. The light-sensitive material comprises a support and two photographic layers each being provided on both sides, side A and side B, of the support and comprising a silver halide emulsion layer and a hydrophilic colloid layer wherein the light-sensitive material satisfies the relationship between sensitivities sA, sB and sA' thereof represented by the following expressions I and II, and an organic substance remained in the photographic layers after processing is an amount of not more than 90% by weight of the organic substance contained in the photographic layers before processing of the light-sensitive material;I: sA/sA'>4.0II: sA/sB=1.Type: GrantFiled: July 26, 1991Date of Patent: August 24, 1993Assignee: Konica CorporationInventor: Iku Metoki
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Patent number: 5227278Abstract: A positive-working, low silver containing, wash-out element comprises a support, a fogged silver halide emulsion layer optionally containing a colorant, a photopolymer layer coated contiguous to silver halide layer and an abrasion layer containing a conventional, wash-out developing agent coated over the photopolymer layer. A process of making a positive image comprises image-wise exposing the above element to actinic radiation, immersing the element in an aqueous alkaline medium, and washing the element with water.Type: GrantFiled: February 27, 1992Date of Patent: July 13, 1993Assignee: E. I. Du Pont de Nemours and CompanyInventor: Robert P. Held
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Patent number: 5206124Abstract: A silver halide color photographic light-sensitive material is disclosed. The light-sensitive material is excellent in reproducibility of blue-green or green colored photographic subject. The light-sensitive material has a blue-sensitive layer, green-sensitive layer and a red-sensitive layer. The blue-sensitive layer has the maximum spectral sensitivity at a wavelength within the range of 415 to 470 nm and the spectral sensitivity at 480 nm of the blue-sensitive layer is not more than 35% of the maximum sensitivity. The green-sensitive layer has the maximum spectral sensitivity at a wavelength within the range of 530 nm to 560 nm and the spectral sensitivity at 500 nm of the green-sensitive layer is not less than 25% of the maximum sensitivity.Type: GrantFiled: February 11, 1992Date of Patent: April 27, 1993Assignee: Konica CorporationInventors: Hiroshi Shimazaki, Yasushi Irie, Katuya Yabuuchi
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Patent number: 5206125Abstract: A silver halide color photographic material comprising a reflective support and coated thereon at least one each of a cyan dye-forming silver halide emulsion layer, a magenta dye-forming silver halide emulsion layer and a yellow dye-forming silver halide emulsion layer, each of the emulsion layers containing substantially silver iodide-free silver chloride or silver chlorobromide and respectively having spectral sensitivity peaks in different wavelength regions, at least one of the emulsion layers containing silver halide grains having an average grain size of 0.35 .mu.m to 0.65 .mu.m and a silver halide content of 0.19 g Ag/m.sup.2 or less, the total silver amount in all the silver halide emulsion layers being 0.78 g/m.sup.Type: GrantFiled: November 13, 1990Date of Patent: April 27, 1993Assignee: Fuji Photo Film Co., Ltd.Inventor: Tadashi Ogawa
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Patent number: 5196299Abstract: A radiographic element is disclosed comprised of a transparent film support and spectrally sensitized tabular grain silver halide emulsion layer units coated on opposite sides of the film support. At least one of the emulsion layer units is comprised of tabular grains having a thickness of less than 0.2 micrometer accounting for greater than 50 percent of total grain projected area and exhibiting an average tabularity of greater than 25. Adsorbed to the surface of the tabular grains is at least one benzimidazolocarbocyanine dye chosen for its high level of absorption in the mid-green spectral region at the emission line of gadolinium oxysulfide, terbium activated intensifying screens and its low residual stain in the fully processed film.Type: GrantFiled: March 28, 1991Date of Patent: March 23, 1993Assignee: Eastman Kodak CompanyInventors: Robert E. Dickerson, Steven G. Link, Fred M. Macon, Richard B. Anderson, Wayne W. Weber, II
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Patent number: 5196295Abstract: Spin castable mixtures are provided which are useful for applying onto photoresist surfaces to produce a contrast enhancement layer employing .alpha.-alkyl-N-alkyl nitrones in combination with an inert organic binder and solvent. The .alpha.-alkyl-N-alkyl nitrones can be used with 200-300 nanometers UV light.Type: GrantFiled: May 7, 1991Date of Patent: March 23, 1993Assignee: MicroSi, Inc.Inventor: Gary C. Davis
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Patent number: 5185232Abstract: A method of image formation comprising imagewise exposing a silver halide photographic photosensitive material comprising a support having thereon at least two silver halide emulsion layers and which contains a hydrazine compound in the emulsion layers or in another hydrophilic colloid layer wherein the photographic speed of the emulsion layer on the side furthest from the support of the above mentioned silver halide layers is higher by 0.1 to 0.4 logE than the photographic speed of the emulsion layer which is closest to the support, through the support, and developing the imagewise exposed photosensitive material, whereby a high contrast negative image of a gamma at least 8 is obtained.Type: GrantFiled: November 16, 1990Date of Patent: February 9, 1993Assignee: Fuji Photo Film Co., Ltd.Inventor: Senzo Sasaoka
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Patent number: 5176990Abstract: A method for forming a photographic element includes steps of heating an emulsion containing grains of a radiation sensitive silver haloiodide to form a first melt, heating an emulsion containing grains of a silver salt effective to enhance the photographic properties of the silver haloiodide emulsion to form a second melt, and coating the first and second melts onto a photographic support to form an image recording layer. The silver salt grains are substantially insensitive to radiation at wavelengths at which said silver haloiodide grains are sensitive. The coating step is preferably carried out by blending the first and second melts together, then immediately coating the silver haloiodide emulsion onto the support. In a preferred embodiment, the silver salt is essentially silver chloride in the form of relatively fine cubic grains, and the silver haloiodide is in the form of tabular grains larger than the cubic grains.Type: GrantFiled: December 21, 1990Date of Patent: January 5, 1993Assignee: Eastman Kodak CompanyInventor: Sang H. Kim
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Patent number: 5147769Abstract: An X-ray photographic material having:(1) at least one sensitive silver halide photographic emulsion layer provided on both sides of a support; and(2) at least one layer provided on at least one side of the support for fixing a dye which can be decolorized during development and which absorbs light in the sensitive region of the photographic material and wherein:(3) the dye contributes to the reduction of cross-over to less than 10%; and(4) the dye is a compound selected from the group consisting of compounds represented by the following general formula (I) and is dissolved in an oil which is a solvent substantially insoluble in water and having a boiling point of not lower than 160.degree. C. and which is dispersed as oil droplets or is loaded and dispersed in a polymer latex: ##STR1## wherein X and Y each represents a substituent group, or X and Y may be combined together to form a heterocyclic ring L.sup.1, L.sup.2 and L.sup.Type: GrantFiled: June 5, 1990Date of Patent: September 15, 1992Assignee: Fuji Photo Film Co., Ltd.Inventors: Ichizo Toya, Yoshihiro Jimbo
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Patent number: 5139928Abstract: The invention relates to the exposure of a recording film to an image transmitting device and to a thermochromic polyacetylenic recording film comprising, as an imageable medium, a supported, imageable crystalline polyacetylene monomer layer in contact with an imageable polyacetylene polymer in a mole ratio of between about 1:1 and about 1000:1 which medium additionally can contain an energy absorbing, heat transferring agent having an optical absorbance at a wavelength similar to that of the image transmitting device.Type: GrantFiled: October 23, 1990Date of Patent: August 18, 1992Assignee: ISP Investments Inc.Inventor: David F. Lewis
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Patent number: 5132201Abstract: A silver halide photographic material composed of a support having thereon at least one light-sensitive silver halide emulsion layer, at least one layer of the material containing a compound represented by formula (I): ##STR1## wherein X represents hydrogen or a group capable of providing hydrogen upon hydrolysis; Time represents a divalent linking group; t is 0 or 1; PUG represents a photographically useful group; V represents a carbonyl group, a sulfonyl group, a sulfoxy group, an iminomethylene group, ##STR2## wherein W represents an electrophilic group, or V represents ##STR3## wherein R.sub.0 represents an alkoxy group or an aryloxy group; and R represents hydrogen, an aliphatic group, an aromatic group or ##STR4## wherein PUG, Time, t, and W are as defined above. The redox compound is capable of releasing a photographically useful reagent using any conventional developing agent, has excellent storage stability, and provides rapid release of the photographically useful reagent.Type: GrantFiled: November 12, 1991Date of Patent: July 21, 1992Assignee: Fuji Photo Film Co., Ltd.Inventors: Morio Yagihara, Hisashi Okada
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Patent number: 5108874Abstract: The image of an object with opaque and transparent regions having a contrast less than the contrast threshold of a layer of photoresist when light of a predetermined wavelength to which the photoresist is sensitive is passed through the object and onto the layer of photoresist is enhanced in contrast by the provision of a contrast enhancing layer contiguous to the surface of the photoresist to a value above the contrast threshold of the photoresist. The contrast enhancing layer is constituted of an aryl nitrone compound mixed with a suitable binder.Type: GrantFiled: August 23, 1989Date of Patent: April 28, 1992Assignee: MicroSi, Inc.Inventors: Bruce F. Griffing, Paul R. West
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Patent number: 5108882Abstract: A photographic element is described comprising a support having thereon(a) a silver halide emulsion layer where the silver halide is sensitized with a dye having the formula: ##STR1## Z.sub.1 and Z.sub.2 each independently represents the atoms necessary to complete a substituted or unsubstituted 5- or 6-membered heterocyclic nucleus,R.sub.1 and R.sub.2 each independently represents substituted or unsubstituted alkyl or substituted or unsubstituted aryl, andR.sub.3, R.sub.4, R.sub.5, and R.sub.6 each independently represents hydrogen, substituted or unsubstituted alkyl, substituted or unsubstituted aryl,X represents a counterion, and(b) at least one other red- or infrared-sensitive silver halide emulsion layer having a maximum sensitivity at a wavelength different from that of the (a) layer.Type: GrantFiled: September 26, 1989Date of Patent: April 28, 1992Assignee: Eastman Kodak CompanyInventors: Richard L. Parton, Annabel A. Muenter, Anthony Adin
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Patent number: 5108881Abstract: Radiographic elements are disclosed with silver halide emulsion layer units coated on opposite sides of a film support. The radiographic elements are constructed to reduce crossover during exposure by intensifying screens to minimal levels. To permit the minimal crossover radiographic elements to be employed with varied intensifying screens, one of the silver halide emulsion layer units over an exposure range of at least 1.0 log E exhibits an average contrast of from 0.5 to <2.0 and point gammas that differ from the average contrast by less than .+-.40% and the second silver halide emulsion layer unit exhibits a mid-scale contrast of at least 0.5 greater than the average contrast of the first silvert halide emulsion layer unit.Type: GrantFiled: March 29, 1990Date of Patent: April 28, 1992Assignee: Eastman Kodak CompanyInventors: Robert E. Dickerson, Phillip C. Bunch
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Patent number: 5081007Abstract: A method for processing a silver halide light-sensitive photographic material by a super rapid process and an automatic processing machine used therefor is disclosed. The method comprises a step of processing an imagewise exposed silver halide light-sensitive photogrpahic material comprising a support and a photographic component layer provided on at least one side of said support, under conditions satisfying the equation given below:50.ltoreq.1.sup.0.75 .times.T.ltoreq.124wherein l is the length of a path along which said silver halide light-sensitive photographic material to be conveyed for processing, the length being more than 0.7 m and less than 3.1 m, T is time, expressed in terms of seconds, necessary for said silver halide light-sensitive photographic material to pass through said path.Type: GrantFiled: September 14, 1988Date of Patent: January 14, 1992Assignee: Konica CorporationInventor: Haruhiko Sakuma
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Patent number: 5079134Abstract: An X-ray photographic material which exhibits reduced crossover and exhibits no objectionable after-color (stain) upon rapid processing, comprising a transparent support having at least one photosensitive silver halide emulsion layer provided on each side of said support and having at least one layer containing a dye which absorbs light in the sensitive region of said sensitive silver halide photographic emulsion layer provided between said light-sensitive emulsion layer and the support, wherein crossover is less than 10%, said dye is adsorbed onto fine particles which fine particles provide surfaces onto which the dye can be adsorbed, said dye can be decolorized or washed out during development, and said dye is a compound selected from the group consisting of compounds represented by the formulae set forth in the specification.Type: GrantFiled: May 31, 1990Date of Patent: January 7, 1992Assignee: Fuji Photo Film Co., Ltd.Inventor: Ichizo Toya
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Silver halide color photosensitive material having a reflective support and a specified volume ratio
Patent number: 5075204Abstract: A silver halide color photosensitive material comprising a support having a metal surface with secondary diffuse reflection and a total reflectance of 0.5 or more in the visible wavelength region of 420 to 680 nm, said support having provided thereon a photosensitive silver halide emulsion layer containing a yellow coupler, a photosensitive silver halide emulsion layer containin a magenta coupler, and a photosensitive silver halide emulsion layer containing a cyan coupler and at least one non-photosensitive hydrophilic colloid layer, wherein the volume ratio R of the hydrophilic constituents in each photosensitive silver halide emulsion layer with respect to the non-hydrophilic constituents therein is 1.30 or less, and the photosensitive silver halide emulsion layer containing a color coupler which is arranged nearest the support has an R value of 1.20 or less.Type: GrantFiled: March 13, 1990Date of Patent: December 24, 1991Assignee: Fuji Photo Film Co., Ltd.Inventors: Keisuke Shiba, Tadashi Ogawa -
Patent number: 5061618Abstract: A photographic element is described comprising a support having thereon a silver halide emulsion layer where the silver halide is sensitized with a dye having the formula: ##STR1## wherein where Z.sub.1, Z.sub.2, Z.sub.3, R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, and X are as defined herein.Type: GrantFiled: March 28, 1990Date of Patent: October 29, 1991Assignee: Eastman Kodak CompanyInventors: Richard L. Parton, Annabel A. Muenter, David A. Stegman
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Patent number: 5041364Abstract: A diagnostic photographic element is disclosed containing reduced surface glare following rapid-access processing. The photographic elements contain silver halide emulsion imaging units and overlying layer units that contain to reduce surface glare a tabular grain silver halide emulsion in which the tabular grains have an average diameter greater than 1.5 .mu.m and an average tabularity of greater than 25.Type: GrantFiled: October 1, 1990Date of Patent: August 20, 1991Assignee: Eastman Kodak CompanyInventors: Robert E. Dickerson, Robert L. Childers
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Patent number: 5041359Abstract: The invention relates to a method of forming of a patterned photopolymer coating on a printing roller in which a photopolymer coating, present on said roller, and covered by a light-sensitive intermediate layer is exposed in a first stage to form an image of opaque and translucent parts in said intermediate layer.Subsequently the photopolymer layer is exposed via the image formed in the intermediate layer, after which the photopolymer layer is developed.Between abovementioned exposures, in case of a relatively thick, flexible, photopolymer, a period is waited to ensure that depressed parts of the photopolymer layer have returned to their original state.The invention also relates to a printing roller thus obtained.Type: GrantFiled: August 3, 1987Date of Patent: August 20, 1991Assignee: Stork Screens B.V.Inventor: Kooi, Johannes
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Patent number: 5028518Abstract: Photothermographic emulsions sensitive to ultraviolet radiation can be coated on both sides of polymeric film which is inherently absorptive of the ultraviolet radiation, preventing crossover effects in cassette loading of the film.Type: GrantFiled: September 24, 1990Date of Patent: July 2, 1991Assignee: Minnesota Mining and Manufacturing CompanyInventors: Thomas D. Lyons, Sergio Pesce, John M. Winslow
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Patent number: H1003Abstract: An improved process for producing a photographic material in which an assembly of superposed liquid photographic layers is coated onto the surface of a moving base support in such a way that the properties of the liquid photographic layers being coated are evaluated by their dynamic surface tensions.Type: GrantFiled: February 15, 1990Date of Patent: December 3, 1991Inventors: Masao Ishiwata, Norio Kawame, Takeshi Sakurai, Mieji Nakano, Kazuhide Tamazawa, Nobuyuki Kimura, Toshio Saito, Gentaro Hada
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Patent number: H1105Abstract: An asymmetric radiographic element is disclosed comprised of a transparent film support, silver halide emulsion layer units of differing sensitometric characteristics coated on opposite sides of the film support, and a processing solution decolorizable means for reducing crossover to less than 10 percent. The radiographic element is positioned between intensifying screens and mounted in a cassette for exposure to X-radiation. A feature is included for ascertaining which of the emulsion layer units is positioned nearest a source of X-radiation during exposure.Type: GrantFiled: March 29, 1990Date of Patent: September 1, 1992Assignee: Eastman Kodak CompanyInventors: Richard J. Jebo, Paul W. Twombly, Robert E. Dickerson, Phillip C. Bunch