And Containing Plural Layers Sensitive To The Same Spectral Region Patents (Class 430/506)
  • Patent number: 6242168
    Abstract: The present invention relates to a light-sensitive silver halide color multilayer photographic material which comprises a support base having coated thereon at least three red-sensitive emulsion layers having different sensitivity, at least three green-sensitive emulsion layers having different sensitivity, and at least two yellow-sensitive emulsion layers having different sensitivity, wherein (a) a core-shell silver halide emulsion having an average silver iodide content lower than 10% mol is present in at least one of the lowest sensitive red-, green- and yellow layers, (b) a yellow dye forming malonodiamide DIR coupler having in the coupling position thereof a 4,7-dihalogen-2-benzotriazolyl group is present in both the medium sensitive red- and green-sensitive layers, and (c) a yellow dye forming DIR coupler having a 1,2,4-triazolyl group attached to the coupling position, such 1,2,4-triazolyl group comprising a hydrolizable alkoxy- or aryloxy-carbonyl group attached to a benzytlthio substituent on the
    Type: Grant
    Filed: May 23, 2000
    Date of Patent: June 5, 2001
    Assignee: Ferrania SpA
    Inventors: Mauro Avidano, Raffaella Biavasco, Diego Brignone, Giuseppe Rocca, Luisa Tavella
  • Patent number: 6218097
    Abstract: A colour photographic silver halide material having a support and at least one photosensitive silver halide emulsion layer which contains a magenta coupler of the formula (I) in which R1 to R3, a, b, c and X have the meaning stated in the description, which material contains a DIR coupler of the formula (II) in which R6 to R11 have the meaning stated in the description, is distinguished by improved processing stability.
    Type: Grant
    Filed: August 30, 1999
    Date of Patent: April 17, 2001
    Assignee: Agfa-Gevaert
    Inventors: Peter Bell, Ralf Büscher, Lothar Rosenhahn, Heinz Wiesen, Ralf Wirowski
  • Patent number: 6210870
    Abstract: A method of creating image-bearing electronic signals from an imagewise exposed and processed color negative photographic element is disclosed. The color element is especially suited for preloading in a one-time-use camera and is capable of producing images that, when scanned, converted to electronic form and then converted to a viewable form, exhibit excellent color, reduced granularity and improved sharpness. The photographic elements contain blue, green and red recording layer units capable of forming spectrally differentiated dye images. The layer units are substantially free of colored masking coupler, and each exhibit a dye image gamma of less than 1.5. The element exhibits an exposure latitude of at least 2.7 log E. The gamma ratios of the blue, green and red recording layer units are between 0.80 and 1.2.
    Type: Grant
    Filed: June 25, 1998
    Date of Patent: April 3, 2001
    Assignee: Eastman Kodak Company
    Inventors: Frank R. Brockler, John D. Buhr, Allan F. Sowinski, Richard P. Szajewski, Lois A. Buitano
  • Patent number: 6190847
    Abstract: A color negative silver halide photographic element is disclosed that is capable of producing images that, when converted to electronic form and then converted to a viewable form, exhibit reduced granularity. The photographic elements contain blue, green and red recording layer units capable of forming spectrally differentiated dye images. The layer units are substantially free of masking coupler, each exhibit a dye image gamma of less than 1.5 and an exposure latitude of at least 2.7 log E. Greater than 50 mole percent of development inhibitor compound in at least one of the layer units exhibits a diffusion factor of less than 0.4.
    Type: Grant
    Filed: April 24, 1998
    Date of Patent: February 20, 2001
    Assignee: Eastman Kodak Company
    Inventors: Allan F. Sowinski, Richard P. Szajewski, Frank R. Brockler, Edward J. Giorgianni, John D. Buhr, Lois A. Buitano, Maria J. Gonzalez
  • Patent number: 6180329
    Abstract: A photographic material comprising a support coated with a silver halide image-forming emulsion layer, a non image-forming layer, and a hydrophilic colloid protective layer wherein the non image-forming layer is situated between the protective layer and the image-forming layer and comprises metallic silver in particle form.
    Type: Grant
    Filed: August 9, 1999
    Date of Patent: January 30, 2001
    Assignee: Eastman Kodak Company
    Inventor: Christian Paris
  • Patent number: 6162595
    Abstract: Photographic elements capable of forming a reversal image are disclosed comprising a support and, coated on said support, at least one image recording emulsion layer comprised of a dispensing medium and radiation sensitive silver halide grains and at least one substantially non-image forming layer. In one embodiment, the substantially non-image forming layer comprises: a) a light sensitive silver halide imaging emulsion which is less than 10 percent of the mass of the total imaging emulsion in the element; b) a first non-image forming silver salt emulsion having an average grain size less than 0.15 .mu.m; and c) a second non-image forming silver salt emulsion comprising iodide having an average grain size greater than that of the first non-image forming emulsion.
    Type: Grant
    Filed: November 23, 1999
    Date of Patent: December 19, 2000
    Assignee: Eastman Kodak Company
    Inventor: Keath T. Chen
  • Patent number: 6159675
    Abstract: A colour photographic material having a support and at least one silver halide emulsion layer containing couplers, which layer contains as couplers a 2-equivalent magenta coupler and both at least one compound of the formula (III) and at least one compound of the formula (IV): ##STR1## in which R.sub.4 to R.sub.9 and n have the meaning stated in the description, is distinguished by reduced pressure sensitivity.
    Type: Grant
    Filed: May 25, 1999
    Date of Patent: December 12, 2000
    Assignee: Agfa-Gevaert Naamloze Vennootschap
    Inventors: Cuong Ly, Matthias Feigl, Markus Geiger
  • Patent number: 6159672
    Abstract: The invention provides a multilayered color photographic element and associated image forming process wherein the element comprises a support having coated thereon photographic silver halide emulsion layers said layers including at least two blue sensitive layers, the blue sensitive layers being the emulsion layers farthest from the support, whereinthe first of said blue sensitive layers is the most sensitive blue layer and is the emulsion layer farthest from the support, the first blue sensitive layer being extremely starved of dye-forming coupler, the second blue sensitive layer being contiguous said first blue sensitive layer.
    Type: Grant
    Filed: October 8, 1993
    Date of Patent: December 12, 2000
    Assignee: Eastman Kodak Company
    Inventors: John Brian Rieger, James Anthony Friday
  • Patent number: 6159671
    Abstract: A silver halide color photographic lightsensitive material comprises a support and, superimposed thereon, a yellow color-forming blue-sensitive emulsion layer, a magenta color-forming green-sensitive emulsion layer containing a magenta coupler represented by a general formula (MC-1): ##STR1## and a cyan color-forming red-sensitive emulsion layer containing a cyan coupler represented by a general formula (PC-1)or a general formula (NC-1): ##STR2##
    Type: Grant
    Filed: October 14, 1998
    Date of Patent: December 12, 2000
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Naoto Matsuda
  • Patent number: 6143482
    Abstract: A photographic element comprises: a support and, coated on the support, a plurality of hydrophilic colloid layers, including radiation-sensitive silver halide emulsion layers, forming layer units for separately recording blue, green and red exposures, wherein, the red recording layer unit is comprised of at least one green-red sensitive emulsion having a peak dyed absorptance of between about 525 and about 600 nm, an overall half-peak absorptance bandwidth of between about 70 and about 150 nm, and a ratio of the bandwidths at 80% of peak absorptance to 50% of peak absorptance of greater than or equal to about 0.25.In preferred embodiments of the invention, the photographic element is especially suited for more accurately recording scenes according to the human visual system.
    Type: Grant
    Filed: August 5, 1998
    Date of Patent: November 7, 2000
    Assignee: Eastman Kodak Company
    Inventors: Lois A. Buitano, Allan F. Sowinski, Steven G. Link
  • Patent number: 6140029
    Abstract: The invention provides a silver halide photographic element comprising a non-light sensitive layer containing elemental silver and a nitrogen heterocycle compound having a ClogP of at least 4.5, which compound comprises a ring system of one or more fused rings containing at least one --N--H bond, the ring system comprising a total of at least three nitrogen ring members and the associated bonds; provided that the compound does not contain an --SH group or >C.dbd.S group and does not react with an oxidized developer.
    Type: Grant
    Filed: September 30, 1999
    Date of Patent: October 31, 2000
    Assignee: Eastman Kodak Company
    Inventors: Bernard A. Clark, Jane S. Boff, Philip A. Allway, Louis E. Friedrich, Stephen P. Singer
  • Patent number: 6127104
    Abstract: The present invention concerns a novel film for light boxes, in particular a reversal film for light box displays comprising a transparent support covered, in order, with a red-sensitive silver halide emulsion layer, a green-sensitive silver halide emulsion layer and a blue-sensitive silver halide emulsion layer, the support being covered on at least one of its faces with a layer comprising an opacifying compound in a quantity such that the minimum density of the film is between 0.2 and 0.6. This film also has compatibility with existing processing methods intended for reversal photographic products.
    Type: Grant
    Filed: June 22, 1998
    Date of Patent: October 3, 2000
    Assignee: Eastman Kodak Company
    Inventors: Gerard M. Droin, Yannick Begel, Didier M. Chigot
  • Patent number: 6093524
    Abstract: A color photographic film having a support, 2 or 3 red-sensitive, cyan-coupling silver halide emulsion layers, 2 or 3 green-sensitive, magenta-coupling silver halide emulsion layers, 2 or 3 blue-sensitive, yellow-coupling silver halide emulsion layers, conventional interlayers and protective layers together with a yellow filter layer arranged closer to the support than the blue-sensitive layers, wherein at least one green-sensitive silver halide emulsion layer is arranged further away from the support than all the other photosensitive layers, exhibits improved sharpness without color distortion if at least 50% of the projected surface area of the silver halide emulsion of the green-sensitive silver halide emulsion layer, of which there is at least one, consists of tabular silver halide grains having an aspect ratio of at least 3.
    Type: Grant
    Filed: September 16, 1998
    Date of Patent: July 25, 2000
    Assignee: Agfa-Gevaert NV
    Inventors: Rainer Scheerer, Lothar Endres, Hans-Ulrich Borst, Lydia Simon, Thomas Stetzer, Peter Bell, Lothar Rosenhahn, Ralf Buscher
  • Patent number: 6087083
    Abstract: A colour photographic material in which a package of layers is provided which consists, in the stated sequence, of (a) a silver halide-free layer containing colour coupler, (b) a layer containing silver halide and (c) a silver halide-free layer containing colour coupler, wherein at least one of layers (a) and (c) consists to an extent of at least 20 vol. % of a synthetic polymer, is distinguished by an improved grain/sensitivity ratio.
    Type: Grant
    Filed: November 3, 1998
    Date of Patent: July 11, 2000
    Assignee: Asfa-Gevaert N.V.
    Inventors: Peter Bell, Ralf Buscher, Lothar Endres, Lothar Rosenhahn, Rainer Scheerer, Lydia Simon, Thomas Stetzer
  • Patent number: 6060227
    Abstract: A color negative film having a support, at least one blue-sensitive, yellow-coupling silver halide emulsion layer, at least one green-sensitive, magenta-coupling silver halide emulsion layer and at least one red-sensitive, cyan-coupling silver halide emulsion layer, wherein at least one of the color-sensitive silver halide emulsion layers consists of at least two sub-layers of differing photographic sensitivity, the coupler application rate in the most highly sensitive layer of the color sensitive silver halide emulsion layer, of which there is at least one, consisting of at least two sub-layers of differing photographic sensitivity, is no more than 0.05 mmol/m.sup.
    Type: Grant
    Filed: July 24, 1998
    Date of Patent: May 9, 2000
    Assignee: Agfa-Gevaert NV
    Inventors: Ralf Buscher, Peter Bell, Hans-Ulrich Borst, Lothar Rosenhahn, Jorg Siegel, Thomas Stetzer
  • Patent number: 6043012
    Abstract: A color negative photographic element is disclosed containing higher levels of oxidized developer agent scavenging compound in the lowest and intermediate sensitivity layers of a triple-coated image recording unit than in the fast layer. Reduced fog and granularity are obtained, and increased speed and latitude are obtained.
    Type: Grant
    Filed: March 31, 1999
    Date of Patent: March 28, 2000
    Assignee: Eastman Kodak Company
    Inventors: Allan F. Sowinski, William J. Begley, Stephen P. Singer
  • Patent number: 6043011
    Abstract: A multilayer silver halide color photographic element comprises a support having coated thereon a silver antihalation layer, an interlayer, at least two red-sensitive silver halide emulsion layers, at least two green-sensitive silver halide emulsion layers a yellow filter layer, and at least two blue-sensitive silver halide emulsion layers, wherein a silver halide emulsion layer or a nonsensitive layer adjacent thereto comprises a bleach accelerator releasing coupler of formulaA-(TIME).sub.n -S-X-Rwherein A represents a coupler residue releasing from (TIME).sub.n -S-X-R upon reaction with the oxidation product of a color developing agent; TIME represents a timing group releasing S-X-R with delay under developing conditions; n represents 0 or 1; X represents a divalent linking groups consisting of an alkylene group containing 1 to 8 carbon atoms; and R represents a group selected in the group consisting of a), b) and c): ##STR1## wherein R.sub.
    Type: Grant
    Filed: May 11, 1998
    Date of Patent: March 28, 2000
    Assignee: Tulalip Consultoria Comercial Sociedade Unipessaol S.A.
    Inventors: Isabella Cogliolo, Paolo Beretta, Ivano Delprato, Sergio Massirio
  • Patent number: 6040125
    Abstract: A color photographic recording material having at least one red-sensitive silver halide emulsion layer unit with which a cyan coupler is associated, at least one green-sensitive silver halide emulsion layer unit with which a magenta coupler is associated, at least one blue-sensitive silver halide emulsion layer unit with which a yellow coupler is associated, and optionally further light-insensitive layers, the blue-sensitive silver halide emulsion layer unit of which comprises at least two blue-sensitive partial layers which are sensitized with sensitizing dyes in such a way that a sensitivity curve ensues which is characterized by the following parameters:460 nm.ltoreq..lambda.(S.sub.max).ltoreq.480 nmb.sub.80 .gtoreq.24 nmb.sub.50 .gtoreq.91 nm,b.sub.20 .gtoreq.106 nm,wherein.lambda.(S.sub.max) denotes the wavelength of the sensitivity maximum (100 % sensitivity);b.sub.80 denotes the width of the sensitivity curve at 80% of the maximum sensitivity;b.sub.
    Type: Grant
    Filed: March 13, 1998
    Date of Patent: March 21, 2000
    Assignee: Agfa-Gevaert NV
    Inventors: Jorg Siegel, Hans-Ulrich Borst, Peter Bell, Ralf Buscher, Heinz Reif, Jurgen Jung
  • Patent number: 6033841
    Abstract: A color photographic silver halide material having at least two red-sensitive, cyan-coupling silver halide emulsion layers of different photographic sensitivity, at least two green-sensitive, magenta-coupling silver halide emulsion layers of different photographic sensitivity and at least one blue-sensitive, yellow-coupling silver halide emulsion layer, and having intermediate layers at least between silver halide emulsion layers of different color sensitivity, wherein at least one color coupler is provided in an intermediate layer which is directly adjacent to a lowest-sensitivity silver halide emulsion layer which is sensitive to a defined spectral region and which couples to the complementary color, which color coupler couples in a non-complementary manner with respect to the aforementioned lowest-sensitivity silver halide emulsion layer, is distinguished by its improved reproduction of yellow color shades.
    Type: Grant
    Filed: March 6, 1998
    Date of Patent: March 7, 2000
    Assignee: AGFA-Gevaert NV
    Inventors: Peter Bell, Hans-Ulrich Borst, Ralf Buscher, Jorg Siegel, Rainer Scheerer, Heinz Schutz
  • Patent number: 6030758
    Abstract: A silver halide light sensitive photographic material is disclosed, comprising a support having thereon a red-sensitive silver halide emulsion layer, a green-sensitive silver halide emulsion layer and a blue-sensitive silver halide emulsion layer, wherein at least one of the red-sensitive, green-sensitive and blue-sensitive layers comprises a high-speed silver halide emulsion layer, a medium-speed silver halide emulsion layer and a low-speed silver halide emulsion layer, the low-speed layer contains a dye forming coupler having coupling reactivity higher than that of a coupler contained in the mdium speed layer.
    Type: Grant
    Filed: August 12, 1998
    Date of Patent: February 29, 2000
    Assignee: Konica Corporation
    Inventor: Makoto Nomiya
  • Patent number: 6020115
    Abstract: Multilayer color photographic element having on a support base blue-, green- and red-sensitive silver halide emulsion layers respectively associated with non-diffusing yellow, magenta and cyan dye-forming couplers, wherein (a) the green-sensitive silver halide emulsion layer comprises three green-sensitive silver halide emulsion layers, respectively uppermost, intermediate and lowermost, sensitive to the same spectral region of visible light, in which the sensitivity of the three green-sensitive silver halide emulsion layers decreases in order from the uppermost silver halide emulsion layer to the lowermost silver halide emulsion layer, (b) each of the three green-sensitive silver halide emulsion layers contains an 1-phenyl-3-anilino-4-phenylthio-5-pyrazolone magenta dye-forming coupler, (c) the weight ratio of the coupler to silver halide (expressed as silver) in the highest sensitivity uppermost green-sensitive silver halide emulsion layer is higher than the weight ratio of the coupler to silver halide (exp
    Type: Grant
    Filed: June 23, 1998
    Date of Patent: February 1, 2000
    Assignee: Tulalip Consultoria Comercial Sociedade Unipessoal
    Inventors: Ferdinando Orengo, Luisa Tavella, Antonio Poggi
  • Patent number: 6017689
    Abstract: A color photographic silver halide material having at least two blue-sensitive, yellow coupler containing silver halide emulsion layers, at least two green-sensitive, magenta coupler containing silver halide emulsion layers and at least two red-sensitive, cyan coupler containing silver halide emulsion layers together with conventional interlayers and protective layers, wherein photosensitive layers of identical color sensitivity differ with regard to the photographic sensitivity thereof and the more highly sensitive layers are arranged further away from the support than the less sensitive layers of identical color sensitivity, which material contains, in a layer which is arranged further from the support than the most highly sensitive, blue-sensitive layer, both at least one yellow coupler and at least one magenta or cyan coupler, is distinguished by improved grain and sensitivity combined with very good color reproduction.
    Type: Grant
    Filed: September 17, 1998
    Date of Patent: January 25, 2000
    Assignee: Agfa-Gevaert AG
    Inventors: Peter Bell, Ralf Buscher, Lothar Endres, Lothar Rosenhahn, Rainer Scheerer, Lydia Simon, Thomas Stetzer
  • Patent number: 6001548
    Abstract: A color photographic element is disclosed comprised of a transparent film support and, coated on the support, a red recording layer unit containing the latent image forming silver halide grains in a plurality of emulsion layers with the latent image forming silver halide grains of maximum sensitivity being the first red recording emulsion layer to receive exposing radiation and containing randomly oriented red light scattering silver halide grains free of adsorbed spectral sensitizing dye. An optional layer coated beneath first layer contains tabular silver halide grains to reflect red light. Improvements in imaging speed with improvements or relatively low losses in image sharpness are realized.
    Type: Grant
    Filed: April 15, 1999
    Date of Patent: December 14, 1999
    Assignee: Eastman Kodak Company
    Inventors: Joseph F. Bringley, James A. Friday
  • Patent number: 5998114
    Abstract: A color photographic element is disclosed comprised of a transparent film support and, coated on the support, a red recording layer unit containing the radiation-sensitive silver halide grains in a plurality of emulsion layers with each emulsion layer located to receive exposing radiation prior to an underlying emulsion layer containing silver halide grains of higher sensitivity than the silver halide grains located in the underlying emulsion layer. The red recording layer unit includes a red light reflective layer free of red absorbing dye and containing tabular silver halide grains having a thickness in the range of from 0.03 to 0.12 .mu.m, an average aspect ratio of greater than 20, and a coating coverage of 0.5 to 1.25 g/m.sup.2, and formed of greater than 50 mole percent bromide, based on silver, is located in the red recording layer unit interposed between two emulsion layers. Improvements in imaging speed and/or gamma with relatively low losses in image sharpness are realized.
    Type: Grant
    Filed: April 15, 1999
    Date of Patent: December 7, 1999
    Assignee: Eastman Kodak Company
    Inventors: Joseph F. Bringley, James A. Friday
  • Patent number: 5998115
    Abstract: A photographic element is disclosed that relies upon high bromide silver halide grains that are sulfur and/or gold sensitized for latent image formation. Coated to receive exposing radiation directly from a layer containing the latent image forming grains is a non-imaging layer containing (a) tabular silver halide grains (i) comprised of greater than 50 mole percent bromide, based on silver, (ii) having a thickness in the range of from 0.03 to 0.20 .mu.m, and (iii) having an average aspect ratio of greater than 20, and (b) silver halide epitaxy selectively positioned adjacent edges of said tabular grains in said non-imaging layer, said silver halide epitaxy (i) containing greater than 50 mole percent chloride, based on silver, and (ii) accounting for from 0.1 to 50 percent of the total silver in the composite grains.
    Type: Grant
    Filed: April 15, 1999
    Date of Patent: December 7, 1999
    Assignee: Eastman Kodak Company
    Inventors: Joseph F. Bringley, James A. Friday, Thomas B. Brust
  • Patent number: 5998113
    Abstract: A color photographic element is disclosed containing in its blue recording layer unit a blue light reflective layer positioned to receive light from a layer in the blue recording layer unit containing latent image forming silver halide grains of maximum sensitivity. The blue light reflective layer is free of blue absorbing dye and contains tabular silver halide grains having a thickness in the range of from 0.12 to 0.15 .mu.m, an average aspect ratio of greater than 15, and a coating coverage of 0.5 to 1.5 g/m.sup.2, and are formed of greater than 50 mole percent bromide, based on silver. The layer containing grains of maximum sensitivity additionally contains from 0.01 to 0.5 g/m.sup.2 of randomly oriented grains having an ECD in the range of from 0.01 to 0.5 .mu.m.
    Type: Grant
    Filed: April 6, 1999
    Date of Patent: December 7, 1999
    Assignee: Eastman Kodak Company
    Inventors: Joseph F. Bringley, James A. Friday, Roger A. Bryant
  • Patent number: 5994042
    Abstract: A color photographic element is disclosed containing in its blue recording layer unit a blue light reflective layer positioned to receive light from a layer in the blue recording layer unit containing latent image forming silver halide grains of maximum sensitivity. The blue light reflective layer is free of blue absorbing dye and contains tabular silver halide grains having a thickness in the range of from 0.12 to 0.15 .mu.m, an average aspect ratio of greater than 15, and a coating coverage of 0.5 to 1.5 g/m.sup.2, and are formed of greater than 50 mole percent bromide, based on silver.
    Type: Grant
    Filed: April 1, 1999
    Date of Patent: November 30, 1999
    Assignee: Eastman Kodak Company
    Inventors: Joseph F. Bringley, James A. Friday, Roger A. Bryant
  • Patent number: 5994043
    Abstract: A color photographic element is disclosed containing in its blue recording layer unit a blue light reflective layer positioned to receive light from first and second latent image forming layers in the blue recording layer unit. The first layer overlies the second layer and contains a silver coating coverages in the range of from 0.1 to 0.7 g/m.sup.2. The second layer contains latent image forming silver halide grains of maximum sensitivity. The blue light reflective layer is free of blue absorbing dye and contains tabular silver halide grains have a thickness in the range of from 0.12 to 0.15 .mu.m, an average aspect ratio of greater than 15, and a coating coverage of 0.5 to 1.5 g/m.sup.2, and are formed of greater than 50 mole percent bromide, based on silver.
    Type: Grant
    Filed: April 5, 1999
    Date of Patent: November 30, 1999
    Assignee: Eastman Kodak Company
    Inventors: Joseph F. Bringley, James A. Friday, Roger A. Bryant
  • Patent number: 5989793
    Abstract: A color negative photographic element is disclosed containing higher levels of oxidized developer agent scavenging compound in the lowest and intermediate sensitivity layers of a triple-coated image recording unit than in the fast layer. Reduced fog and granularity are obtained, and increased speed and latitude are obtained.
    Type: Grant
    Filed: June 25, 1998
    Date of Patent: November 23, 1999
    Assignee: Eastman Kodak Company
    Inventors: Allan F. Sowinski, William J. Begley, Stephen P. Singer
  • Patent number: 5976775
    Abstract: In a silver halide color photographic light-sensitive material having each at least one red-sensitive silver halide emulsion layer (RL), green-sensitive silver halide emulsion layer (GL) and blue-sensitive silver halide emulsion layer (BL) on a support and further having a hydrophilic colloidal layer (AH-1) containing black colloidal silver between the support and the nearest light-sensitive silver halide emulsion layer, wherein the light-sensitive material further has a light-sensitive silver halide emulsion layer (DL) between the hydrophilic colloidal layer (AH-1) and the support, wherein the silver halide emulsion layer (DL) comprises at least one light-sensitive silver halide emulsion, and optical information is recorded by an exposure to light through the support, and the light-sensitive emulsion layer (DL) or its adjacent layer has a color-forming coupler.
    Type: Grant
    Filed: December 10, 1997
    Date of Patent: November 2, 1999
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Yoshio Ishii
  • Patent number: 5972585
    Abstract: A color negative photographic element is disclosed containing yellow, magenta and cyan dye-forming couplers and masking dyes. Visual judging of the negative image obtained following processing is facilitated by choosing the masking dyes to provide, following imagewise exposure and processing, in CIE1976(L.sup.* a.sup.* b.sup.*) color space L.sup.* values of greater than 30 and C.sup.* values of less than 20, where C.sup.* values are derived from the formula: C.sup.* =[(a.sup.*).sup.2 +(b.sup.*).sup.2 ].sup.1/2.
    Type: Grant
    Filed: January 21, 1998
    Date of Patent: October 26, 1999
    Assignee: Eastman Kodak Company
    Inventors: Allan F. Sowinski, Gregory G. Gresock, Wayne F. Erickson, Ronald R. Andrews
  • Patent number: 5962206
    Abstract: A photographic element comprises a support bearing two or more silver halide emulsion image-forming layers each containing ultrathin tabular grains or a support bearing at least three image-forming layers for forming images of different color in which at least one of the layers contains ultrathin tabular grains, wherein the imaging silver contained in the total of all the image-forming layers of the element is as described in subparts (1), (2) and (3):(1) ultrathin tabular grains, having a thickness of less than 0.07 microns, comprise at least 25 wt % of the total imaging silver content of subparts (1), (2), and (3);(2) (a) tabular grains of thickness at least 0.10 microns and (b) non-tabular grains having an ECD of at least 0.15 microns and less than 0.70 microns, comprise not more than 50 wt % of the total imaging silver content of subparts (1), (2), and (3); and(3) tabular grains having a thickness of at least 0.07 microns and a thickness less than 0.
    Type: Grant
    Filed: February 2, 1996
    Date of Patent: October 5, 1999
    Assignee: Eastman Kodak Company
    Inventor: Jeffrey Louis Hall
  • Patent number: 5932402
    Abstract: A colour photographic recording material, comprising of a transparent film base, red-sensitive, green-sensitive and blue-sensitive silver halide emulsion layer units which are disposed thereon and which contain colour couplers, and optionally of further light-insensitive layers, wherein the green-sensitive silver halide emulsion layer unit comprises at least two green-sensitive partial layers, the partial layer of which which is furthest from the film base has the highest sensitivity and is situated further from the film base than is each partial layer of the red-sensitive silver halide emulsion layer unit, and wherein each partial layer of the blue-sensitive silver halide emulsion layer unit is situated further from the film base than is the highest-sensitivity partial layer of the green-sensitive silver halide emulsion layer unit, contains, in the highest-sensitivity partial layer of the green-sensitive silver halide emulsion layer unit, an organic yellow dye which can be decolorised during processing; the
    Type: Grant
    Filed: December 16, 1997
    Date of Patent: August 3, 1999
    Assignee: Agfa-Gevaert AG
    Inventors: Heinz Schutz, Rainer Scheerer, Klaus Sinzger
  • Patent number: 5932403
    Abstract: A color negative photographic element is disclosed comprising at least one light-sensitive image dye-forming unit containing a plural number of silver halide emulsion layers having different levels of photographic sensitivity which are spectrally sensitized to the same color region, wherein the silver halide emulsion layer having the highest level of photographic sensitivity of the unit comprises at least 40 wt %, with respect to total silver halide in the layer, of a first silver halide emulsion comprising silver halide grains with an average equivalent circular diameter represented by ECD.sub.1 and from 5 to 35 wt % of a second silver halide emulsion comprising silver halide grains with an average equivalent circular diameter represented by ECD.sub.2, and the silver halide emulsion layer having the second highest level of photographic sensitivity comprises at least 40 wt % of a third silver halide emulsion having an average equivalent circular diameter represented by ECD.sub.3, where the ratio of ECD.sub.
    Type: Grant
    Filed: March 5, 1998
    Date of Patent: August 3, 1999
    Assignee: Eastman Kodak Company
    Inventors: Steven J. Powell, John F. Sawyer
  • Patent number: 5900356
    Abstract: A silver halide color photographic material comprising a blue sensitive emulsion layer unit, a green sensitive emulsion layer unit and a red sensitive emulsion layer unit provided on a support, at least one of said three color sensitive emulsion layer units containing at least three emulsion layers different from one another in sensitivity, in which all photosensitive layers of said three color sensitive emulsion layer units contain photosensitive tabular silver haloiodide grains having an aspect ratio of from two to 100 and said photosensitive tabular silver haloiodide grains contain grains each having a projection at at least one vertex thereof, whereby a color photographic material having excellent relation between sensitivity and granularity and improved push-processing suitability can be provided.
    Type: Grant
    Filed: January 29, 1997
    Date of Patent: May 4, 1999
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Minoru Sato
  • Patent number: 5885760
    Abstract: A color photographic recording material having at least one silver halide emulsion layer unit containing color coupler, which unit comprises at least two adjacent silver halide emulsion partial layers of the spectral sensitivity concerned, one of which is more sensitive and one less sensitive, contains in a reactive association with at least one more sensitive silver halide emulsion partial layer having a comparatively low color coupler content relative to the silver halide content, a compound (or a precursor compound thereof), which is capable under chromogenic development conditions of forming a substantially colorless, diffusible coupling product with the color developer oxidation product, which coupling product is capable under chromogenic development conditions in the presence of an oxidising agent of forming a dye with a color coupler, with transfer of the residue originating from the color developer.On chromogenic development, color images having improved grain are obtained.
    Type: Grant
    Filed: August 5, 1997
    Date of Patent: March 23, 1999
    Assignee: Agfa-Gevaert AG
    Inventors: Peter Bergthaller, Jurgen Strobach
  • Patent number: 5879868
    Abstract: A silver halide emulsion in which in silver halide tabular grains having dislocation lines in a peripheral portion of a grain, no reduction sensitization is essentially performed before introduction of dislocation lines is started and reduction sensitization is performed after introduction of dislocation lines is started and before grain formation is completed, or a silver halide emulsion in which grain formation is performed in a silver nucleus stabilizing ambience and reduction sensitization is performed in the silver nucleus stabilizing ambience, and a silver halide photographic light-sensitive material using this emulsion.
    Type: Grant
    Filed: December 24, 1996
    Date of Patent: March 9, 1999
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Mitsuhiro Uchida
  • Patent number: 5871892
    Abstract: Radiographic elements useful for therapy imaging are disclosed each comprised of a film support having first and second major surfaces and capable of transmitting radiation to which the radiographic element is responsive and, coated on both of the major surfaces, processing solution permeable hydrophilic colloid layers which are fully forehardened and limited to less than 45 mg/dm.sup.2 of hydrophilic colloid to facilitate processing in less than 45 seconds, at least one of said layers on each major surface including light-sensitive silver halide grains capable of providing a contrast in the range of from 4 to 8 and containing less than 3 mole percent iodide, based on silver, the hydrophilic colloid layers allowing at least 30 percent crossover within a spectral region within which the silver halide grains are light-sensitive. The radiographic elements are useful for either in localization or verification imaging.
    Type: Grant
    Filed: January 28, 1997
    Date of Patent: February 16, 1999
    Assignee: Eastman Kodak Company
    Inventors: Robert E. Dickerson, Arthur G. Haus, Kenneth E. Huff
  • Patent number: 5853968
    Abstract: The invention provides a color negative photographic element comprising a transparent support bearing at least two light sensitive silver halide emulsion layers sensitive to blue light, at least two such layers sensitive to green light, and at least two such layers sensitive to red light, wherein at least one of the red sensitive emulsion layers is spectrally sensitized with both a particular first carbocyanine dye (I) which contains both a thiazole and an oxazole ring and a particular second carbocyanine dye (II) which contains two thiazole rings.The element of the invention is advantageous in allowing an increased efficiency of silver removal during the bleaching step of the development process.
    Type: Grant
    Filed: November 27, 1996
    Date of Patent: December 29, 1998
    Assignee: Eastman Kodak Company
    Inventors: Daniel R. English, Steven G. Link, Hans G. Ling
  • Patent number: 5830628
    Abstract: A colour photographic silver halide material with at least two blue-sensitive, yellow-coupling silver halide emulsion layers of differing photographic sensitivity, at least two green-sensitive, magenta-coupling silver halide emulsions layers of differing photographic sensitivity and at least two red-sensitive, cyan-coupling silver halide emulsion layers of differing photographic sensitivity, at least one interlayer Z-1 below the lowermost red-sensitive silver halide emulsion layer and/or at least one interlayer Z-2 below the lowermost green-sensitive silver halide emulsion layer, in which material a coupler is additionally used in at least one silver halide emulsion layer, which coupler couples to yield a colour which is not complementary to the spectral sensitisation of the layer concerned, and Z-1 and/or Z-2 contain a silver halide emulsion which has tabular grains with an aspect ratio of >2, an average diameter of a sphere of equal volume of .gtoreq.0.3 .mu.
    Type: Grant
    Filed: July 10, 1996
    Date of Patent: November 3, 1998
    Assignee: Agfa-Geuaert
    Inventors: Hans-Ulrich Borst, Detlef Brennecke, Ralf Buscher, Johannes Willsau, Peter Bell
  • Patent number: 5817452
    Abstract: A heat developable color light-sensitive material provided on a support, which is for use in an image forming process comprising using a dye fixing element provided on a support separate from the support for the light-sensitive material, superposing one on another, heat developing to form a diffusible dye in the light sensitive material, and transferring the diffusible dye to the dye fixing element to form an image, is disclosed.
    Type: Grant
    Filed: September 19, 1997
    Date of Patent: October 6, 1998
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Tetsu Kamosaki
  • Patent number: 5804359
    Abstract: Photographic elements are disclosed in which exposure to at least one portion of the spectrum is recorded by a silver halide emulsion layer unit as an image having its optical density provided by silver. The layer unit is comprised of a plurality of radiation sensitive silver halide emulsion layers that are responsive to the same region of the spectrum, but differ in sensitivity, including a non-wandering silver halide reducing agent. A molar ratio of reducing agent to silver halide in one of the emulsion layers is less than that stoichiometrically required for complete silver halide reduction to silver. A higher molar ratio of reducing agent to silver halide is contained in a remaining of the two emulsion layers.
    Type: Grant
    Filed: May 17, 1996
    Date of Patent: September 8, 1998
    Assignee: Eastman Kodak Company
    Inventor: Michael John Simons
  • Patent number: 5795706
    Abstract: A silver halide color photographic light-sensitive material is described, which comprises a support having provided thereon at least one blue-sensitive silver halide emulsion layer, at least one green-sensitive silver halide emulsion layer and at least one red-sensitive silver halide emulsion layer, wherein at least one of said blue-, green- and red-sensitive silver halide emulsion layers comprises a low-, medium- and high-sensitivity silver halide emulsion layers provided in this order from the side near to the support, the average grain thickness of all silver halide grains in the low-sensitivity silver halide emulsion layer is from 0.15 to less than 0.25 .mu.m, the average grain thickness of all silver halide grains in the medium-sensitivity silver halide emulsion layer is from 0.15 to less than 0.25 .mu.m and the average grain thickness of all silver halide grains in the high-sensitivity silver halide emulsion layer is from 0.15 to less than 0.25 .mu.m.
    Type: Grant
    Filed: March 11, 1996
    Date of Patent: August 18, 1998
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Mikio Ihama
  • Patent number: 5792599
    Abstract: Provided is a color photographic material excellent in discrimination and color reproducibility, which has a support and at least a light-sensitive silver halide, a binder, a coupler and a coupling developing agent provided thereon, and at least three light-sensitive emulsion layers having spectral sensitivities in different wavelength regions, respectively, in which at least two different coupling development agents are contained in different light-sensitive emulsion layers.
    Type: Grant
    Filed: September 20, 1996
    Date of Patent: August 11, 1998
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Toshiki Taguchi
  • Patent number: 5780198
    Abstract: A silver halide photographic material comprising a plurality of light-sensitive silver halide emulsion layers, wherein (A) at least one of the layers contains a hydrazine nucleating agent represented by formula (II): ##STR1## wherein R.sub.1 represents an aliphatic group or an aromatic group; R.sub.2 represents a hydrogen atom, an alkyl group, an aryl group, an alkoxy group, an aryloxy group, an amino group, a hydrazine group, a carbamoyl group, or an oxycarbonyl group; G.sub.1 represents a carbonyl group, a sulfonyl group, a sulfinyl group, a sulfoxy group, ##STR2## a thiocarbonyl group, or an iminomethylene group; and A.sub.3 and A.sub.4 each represents a hydrogen atom, a substituted or unsubstituted alkylsulfonyl group, a substituted or unsubstituted arylsulfonyl group, or a substituted or unsubstituted acyl group, provided that at least one of A.sub.3 and A.sub.
    Type: Grant
    Filed: February 15, 1995
    Date of Patent: July 14, 1998
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Takahiro Goto, Kazunobu Katoh, Minoru Sakai
  • Patent number: 5773205
    Abstract: A film spool cartridge and/or camera contain a duplitized color silver halide photographic element having an ISO of at least 25 and at least one light sensitive imaging layer or color recording unit on each side of the support. Such elements can be rapidly processed to provide desired color images. The film spool cartridge includes a spindle, the element wound around the spindle and an aperture for film transport. The camera includes a housing internally forming an exposure plane locator, a lens, a cartridge holder for receiving the film spool cartridge, and a shutter positioned between the lens and the exposure plane for imagewise exposure of the duplitized element.
    Type: Grant
    Filed: April 7, 1997
    Date of Patent: June 30, 1998
    Assignee: Eastman Kodak Company
    Inventors: Richard P. Szajewski, Gary L. House
  • Patent number: 5770354
    Abstract: Silver halide photographic element comprising a support having coated thereon red-, green- and blue-sensitive silver halide emulsion layers comprising, respectively, cyan, magenta and yellow dye-forming couplers, wherein the blue-sensitive emulsion layer comprises at least two blue-sensitive emulsion layers, the uppermost of which has the highest-sensitivity and the lowermost of which has the lowest sensitivity, characterized in that the uppermost highest sensitivity blue-sensitive silver halide emulsion layer comprises a yellow dye-forming coupler and a cyan dye-forming coupler.
    Type: Grant
    Filed: April 25, 1996
    Date of Patent: June 23, 1998
    Assignee: Imation Corp.
    Inventors: Sergio Massirio, Raffaella Biavasco, Flavio Costa
  • Patent number: 5763145
    Abstract: The invention provides a multicolor photographic element comprising a support bearing at least two silver halide emulsion layers having different sensitivities to blue light, a silver halide emulsion layer sensitive to green light, and a silver halide emulsion layer sensitive to red light, wherein:(1) the element comprises a compound of formula (I): ##STR1## wherein R.sub.1 and R.sub.2, independently represent H, an alkyl group or an aryl group, provided that R.sub.1 and R.sub.2 may be joined to form a ring;R.sub.3 is selected from the group consisting of H, alkyl, aryl, and acyl groups;R.sub.4 and R.sub.5 are independently selected from the group consisting of H, OH, alkyl, and aryl groups;n is 1 or 2;and(2) the silver halide emulsion layer of the element that is most sensitive to blue light contains a silver halide grain population such that from 3 to 20 wt % of the total silver halide grains in the emulsion layer have a size (equivalent circular diameter) less than 0.2 micrometers.
    Type: Grant
    Filed: November 27, 1996
    Date of Patent: June 9, 1998
    Assignee: Eastman Kodak Company
    Inventor: Hans G. Ling
  • Patent number: 5750320
    Abstract: Silver halide light sensitive photographic print elements are disclosed comprising a support bearing on one side thereof: a blue color sensitive record comprising at least one blue-sensitive silver halide emulsion yellow-image forming layer, a red color sensitive record comprising at least one red-sensitive silver halide emulsion cyan-image forming layer, and a green color sensitive record comprising at least one green-sensitive silver halide emulsion magenta-image forming layer; wherein at least one of the color records has a fixed best fit contrast less than or equal to 2.2, wherein the fixed best fit contrast for a color record is defined as the slope of a straight line connecting a point B and a point C on the characteristic curve of Status A density versus log Exposure for the color record, where points B and C are located by defining a point A on the characteristic curve at the log Exposure required to attain a density level of 1.
    Type: Grant
    Filed: February 16, 1996
    Date of Patent: May 12, 1998
    Assignee: Eastman Kodak Company
    Inventors: Mitchell Joseph Bogdanowicz, Charles Peter Hagmaier, Leslie Gutierrez
  • Patent number: 5723277
    Abstract: Disclosed is a silver halide emulsion containing tabular silver halide grains in such an amount that the projected area of the tabular silver halide grains accounts for 30% or more of the entire projected area of silver halide grains contained in the emulsion, the tabular silver halide grains having: (1) a multiple structure comprising one inner shell and one or more outer shells positioned outside of the inner shell, wherein the outermost shell of the outer shells contains 50 mol % or more of silver chloride and at least one of the outer shells and the inner shell which are positioned inside of the outermost shell contains 50 mol % or more of silver bromide; (2) {100} faces as two main planes parallel to each other; and (3) an aspect ratio of 2 or more. The silver halide emulsion is excellent in rapid processing suitability, has high sensitivity, and shows photographic performance such as superior graininess.
    Type: Grant
    Filed: May 17, 1996
    Date of Patent: March 3, 1998
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Toshiuki Nabeta