Color Correcting Patents (Class 430/359)
  • Patent number: 5418116
    Abstract: The invention relates to providing a method of toning a black-and-white image formed with color couplers comprising providing a developed image, applying a hue changing material to said print wherein the hue of at least dye in said print is changed.
    Type: Grant
    Filed: December 7, 1993
    Date of Patent: May 23, 1995
    Assignee: Eastman Kodak Company
    Inventors: Gary R. Gottschalk, Joseph I. Varga
  • Patent number: 5411839
    Abstract: An improved color reversal element comprising: a support having thereon at least two light-sensitive silver halide emulsion layers and a compound capable of releasing a development inhibitor, the element comprising a compound having the structural formulaCAR--(TIME).sub.n --INHwherein:CAR is a carrier moiety from which --(TIME).sub.n --INH is released during color development;TIME is a timing group; INH is comprised of a development inhibitor moiety selected from the group consisting of oxazole, thiazole, diazole, oxathiazole, triazole, thiatriazole, benzotriazole, tetrazole, benzimidazole, indazole, isoindazole, mercaptotriazole, mercaptothiadiazole, mercaptotetrazole, selenotetrazole, mercaptothiazole, selenobenzothiazole, mercaptobenzoxazole, selenobenzoxazole, mercaptobenzimidazole, mercaptobenzothiazole, selenobenzimidazole, benzodiazole, mercaptooxadiazole, or benzisodiazole, the INH havina an inhibitor strength greater than 1 (one), andn is 0, 1 or 2.
    Type: Grant
    Filed: January 15, 1993
    Date of Patent: May 2, 1995
    Assignee: Eastman Kodak Company
    Inventors: John W. Harder, Paul A. Burns, J. Ramon Vargas, Arlyce T. Bowne, Philip D. Knight, William J. Begley, Hans G. Ling
  • Patent number: 5399465
    Abstract: A reversal photographic element, preferably a color reversal element, is provided with development inhibitors of a defined class, and an absorber dye. The combination improves acutance. The element has a light sensitive layer containing latent image forming silver halide grains, and an inhibitor containing compound in the light sensitive layer or a non-imaging record associated with the light sensitve layer, the compound having the structural formulaCAR-(TIME).sub.n -INHwherein:CAR is a carrier moiety from which -(TIME).sub.n -INH is released during color development;TIME is a timing group;INH is comprised of a development inhibitor moiety selected from the group defined in the specification, the INH having an inhibitor strength greater than 1. The element is further provided with a dye which absorbs light to which the light sensitive layer is sensitive. Elements of the present invention are preferably processed in a standard reversal process.
    Type: Grant
    Filed: January 15, 1993
    Date of Patent: March 21, 1995
    Assignee: Eastman Kodak Company
    Inventor: John D. Baloga
  • Patent number: 5399468
    Abstract: A color photographic silver halide negative working duplicating element and process comprising (A) a magenta colored masking coupler in at least one blue-sensitive photographic silver halide emulsion layer; and (B) a combination of (i) masking couplers and (ii) color contamination of at least one photographic silver halide emulsion layer enables upon exposure and processing of the element formation of a duplicate image that enables formation of a print image that is visually indistinguishable from the original image. The color photographic silver halide duplicating element is useful in forming duplicate images, especially for color motion picture films.
    Type: Grant
    Filed: August 17, 1993
    Date of Patent: March 21, 1995
    Assignee: Eastman Kodak Company
    Inventors: John F. Sawyer, David E. Fenton
  • Patent number: 5399466
    Abstract: Photographic reversal elements, preferably color reversal elements, and methods of processing them, which elements use both an inhibitor releasing compound in a causer layer and fogged grains in the receiver layer to obtain a high interimage effect. The elements can be processed by standard processing (which provides for exhaustive color development). The elements have at least a first and a second layer, the first layer containing latent image forming iodide containing silver halide grains and the second layer containing latent image forming silver halide grains. An inhibitor releasing compound is provided in the first layer or a non-imaging layer associated with the first and second layers, the inhibitor releasing compound having the structural formulaCAR-(TIME).sub.n -INHwherein:CAR is a carrier moiety from which -(TIME).sub.n -INH is released during-color development;TIME is a timing group;INH is comprised of a development inhibitor moiety; andn is 0, 1 or 2.
    Type: Grant
    Filed: January 15, 1993
    Date of Patent: March 21, 1995
    Assignee: Eastman Kodak Company
    Inventor: John W. Hamer
  • Patent number: 5389499
    Abstract: A color photographic element which contains a color correction layer above at least one red sensitive layer of the element results in an element having excellent color reproduction.
    Type: Grant
    Filed: September 8, 1993
    Date of Patent: February 14, 1995
    Assignee: Eastman Kodak Company
    Inventor: Jeffrey L. Hall
  • Patent number: 5384234
    Abstract: The present invention provides a silver halide color photographic photosensitive material which has high saturation, excellent color reproduction and excellent graininess, the material comprising a silver halide emulsion layer which imparts an interlayer effect to a red sensitive silver halide emulsion layer is spectrally sensitized with a sensitizing dye represented by formula (I) and contains a development inhibitor releasing compound represented by formula (II).
    Type: Grant
    Filed: July 2, 1993
    Date of Patent: January 24, 1995
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Fumitaka Ueda, Junji Nishigaki, Akihiko Ikegawa
  • Patent number: 5378590
    Abstract: A color reversal photographic element comprises a support bearing a red-sensitive, cyan dye-forming unit, a green-sensitive, magenta dye-forming unit, and a blue-sensitive, yellow dye-forming unit, each unit comprising a photosensitive silver halide layer and an image-dye forming coupler; the element contains an interimage effect-controlling means which is characterized as having the capability of simultaneously forming a red image of high relative chroma and a yellow-red tint image of substantially lower relative chroma when the element is exposed to a red color standard object having CIELab values for D.sub.55 reference white a*=30.46, b*=19.16, C*=35.98, L*=40.12 and a yellow-red tint color standard object having CIELab values for D.sub.55 reference white a*=17.26, b*=18.01, C*=24.95, L*=66.98; the resulting images have a red reproduction coefficient equal to or greater than 0.88 and a ratio of red reproduction coefficient to yellow-red tint reproduction coefficient equal to or greater than 1.15.
    Type: Grant
    Filed: January 15, 1993
    Date of Patent: January 3, 1995
    Assignee: Eastman Kodak Company
    Inventors: Frederick E. Ford, Arlyce T. Bowne, Carl Kotlarchik, Jr.
  • Patent number: 5376515
    Abstract: A silver halide color photographic light-sensitive material has, on a support, at least one green-sensitive silver halide emulsion layer containing a magenta coupler, at least one blue-sensitive silver halide emulsion layer containing a yellow coupler, and at least two red-sensitive silver emulsion layers containing a cyan coupler and having different sensitivities. The highest sensitivity layer of the red-sensitive silver halide emulsion layers contains a yellow coupler, and a red-sensitive emulsion layer having a lower sensitivity contains a yellow-colored cyan coupler.
    Type: Grant
    Filed: June 17, 1993
    Date of Patent: December 27, 1994
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Yuji Kume
  • Patent number: 5376513
    Abstract: A silver halide color photographic light-sensitive material comprising a support having thereon at least one light-sensitive silver halide emulsion layer, wherein the light-sensitive material contains a yellow colored cyan coupler and an acylacetamide yellow dye forming coupler having an acyl moiety represented by the general formula (A): ##STR1## wherein R.sub.1 represents a univalent group, Q represents a group of non-metal atoms required to form, together with C, a three to five membered hydrocarbon ring or a three to five membered heterocyclic ring which has within the ring at least one hetero atom selected from among N, O, S and P, with the proviso that R.sub.1 is not a hydrogen atom and it does not join with Q to form a ring.
    Type: Grant
    Filed: November 9, 1993
    Date of Patent: December 27, 1994
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Keiji Mihayashi
  • Patent number: 5370979
    Abstract: A silver halide color photographic light-sensitive material has, on a support, at least one green-sensitive silver halide emulsion layer containing a magenta coupler, at least one blue-sensitive silver halide emulsion layer containing a yellow coupler, and at least two red-sensitive silver emulsion layers containing a cyan coupler and having different sensitivities. The highest sensitivity layer of the red-sensitive silver halide emulsion layers contains a magenta coupler, and a red-sensitive emulsion layer having a lower sensitivity contains a magenta colored cyan coupler.
    Type: Grant
    Filed: May 18, 1993
    Date of Patent: December 6, 1994
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Yuji Kume
  • Patent number: 5370976
    Abstract: A method of reproducing on a substrate an image incorporating metallic inks involves scanning (18) the image to be reproduced and creating (20) four color separations of the scanned image. Metallic gold and/or metallic silver color separations (22, 24) are created by electronically selecting any color area where the effect is desired. Next, the color separations are edited by creating (26) an electronic yellow mask of the image and adjusting (28) the desired tonal range of the metallic areas. The mask edges of each color separation can also be softened (34). The scanner then outputs (36, 38) the separations to film. The image is then reproduced by printing each of the process color separation films (44, 48) and the metallic separation films (42, 46) onto a substrate.
    Type: Grant
    Filed: May 22, 1992
    Date of Patent: December 6, 1994
    Assignee: Williamson Printing Corporation
    Inventors: Jesse S. Williamson, George V. Barnaby, Gary V. Doughty
  • Patent number: 5364745
    Abstract: A photographic element including a support bearing a silver halide photographic emulsion, at least one color-forming coupler and a masking coupler, wherein said masking coupler is represented by the formula A:COUP--LINK--DYE (A)wherein COUP is a coupler moiety;LINK is any group releasable or cleavable from COUP by coupling with an oxidized developing agent during photographic processing; and DYE is an azoaniline dye and preferably an azoaniline dye blocked at the nitrogen-inclusive auxochromic site.
    Type: Grant
    Filed: December 19, 1991
    Date of Patent: November 15, 1994
    Assignee: Eastman Kodak Company
    Inventors: Jared B. Mooberry, Stephen P. Singer, James J. Seifert, Robert J. Ross, Daniel L. Kapp
  • Patent number: 5364753
    Abstract: There is provided a silver halide color photographic light-sensitive material improved in sensitivity, color reproduction and image lasting quality.
    Type: Grant
    Filed: September 9, 1992
    Date of Patent: November 15, 1994
    Assignee: Konica Corporation
    Inventors: Katsumasa Yamazaki, Shuichi Sugita, Shigeto Hirabayashi
  • Patent number: 5334469
    Abstract: A method is disclosed of extracting two or more spectral image records from an imagewise exposed multicolor photographic element containing a plurality of tabular grain emulsions for individually recording imagewise exposure in at least two different regions of the visible spectrum. In each of the tabular grain emulsions tabular grains exhibiting a mean equivalent circular diameter of greater than 0.4 micrometer and a mean thickness of less than 0.2 micrometer account for greater than 90 percent of total grain projected area. No more than one of the tabular grain emulsions exhibits a mean tabular grain thickness of less than 0.07 micrometers, and each of tile remaining tabular grain emulsions exhibit a coefficient of variation of tabular grain thickness of less than 15 percent. The mean tabular grain thickness of emulsions for recording imagewise exposure to different regions of the visible spectrum differs by at least 0.02 micrometer.
    Type: Grant
    Filed: July 16, 1993
    Date of Patent: August 2, 1994
    Assignee: Eastman Kodak Company
    Inventors: James E. Sutton, John Gasper, Allen K. Tsaur, Ann Tarn
  • Patent number: 5328787
    Abstract: Sensitometric Quality Indicator Parameters (SQIP), including Color Radial Error (1), Average Density Error (2), Contrast Mismatch Error (3), HUE (4), and related Auxiliary Quality Parameters, are derived primarily from the deviations in aim values of the red, green, and blue density values over the standard range of exposure steps for a color photographic product. Normalized tolerance limit values common to SQIP 1-3 are established at one exposure reference level within the standard range of exposure steps. A composite graphical display of density deviations versus LOG H exposure, of SQIP 1-4 with associated tolerance limit values versus LOG H exposure, and of the Auxiliary Quality Parameters enables the rapid analysis and disposition of a batch of color photographic product with regard to sensitometric quality.
    Type: Grant
    Filed: May 24, 1993
    Date of Patent: July 12, 1994
    Assignee: Eastman Kodak Company
    Inventors: James D. Clifford, Raymond J. Robbins
  • Patent number: 5322766
    Abstract: A color negative photographic recording material is described in which low emulsion coverage tabular grain silver halide emulsion imaging units are employed. The silver halide emulsion in at least one of the units comprises grains having a tabularity of between about 50 and 25,000. The imaging unit thickness is less than about 4.0 .mu.m, using a total of no more than 2.0 parts by weight of silver per part of coupler. The imaging unit yields a density of at least 2.0 when exposed and processed.
    Type: Grant
    Filed: January 19, 1993
    Date of Patent: June 21, 1994
    Assignee: Eastman Kodak Company
    Inventors: Allan F. Sowinski, George F. Wu, Thomas B. Brust, James T. Kofron, Gary L. House
  • Patent number: 5310628
    Abstract: There is described a process for recording a positive or negative continuous tone color copy having the same or lower contrast than a continuous tone original image, comprising the steps of:providing a photographic element comprising a support having thereon a silver halide emulsion unit capable of forming a yellow image, a silver halide emulsion unit capable of forming a cyan image, and a silver halide emulsion unit capable of forming a magenta image, each image-forming unit having a maximum spectral sensitivity at a different wavelength of radiation, and at least one of the image-forming units having a gamma as described herein,receiving image data representing the densities of the yellow, magenta, and cyan records of the original image,modifying said image data and using it to control three exposure sources, each emitting radiation in the region of maximum spectral sensitivity for a corresponding one of the image-forming units, so that, after exposure, the recorded image density range for at least one of o
    Type: Grant
    Filed: December 9, 1991
    Date of Patent: May 10, 1994
    Assignee: Eastman Kodak Company
    Inventors: Annabel A. Muenter, James C. Owens
  • Patent number: 5310627
    Abstract: A method for locally enhancing the contrast of a yellow image, which method comprises providing a yellow image on a white background, said image comprised of yellow areas and white areas, said yellow areas and white areas exhibiting pH levels which differ by at least 0.5 in an aqueous environment, applying to at least a portion of said yellow image a solution of a pH color changing dye which will change color to a color other than yellow when coated on one of said yellow areas or white areas and not change color when coated on the other of said yellow areas or white areas, thereby forming a colored image duplicating the yellow image in areas where the solution has been applied, said colored image having a visually better contrast than said yellow image.
    Type: Grant
    Filed: December 15, 1992
    Date of Patent: May 10, 1994
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Suzan J. Hirz, Bruce W. Weeks
  • Patent number: 5306603
    Abstract: A light-sensitive material having high light-sensitivity and high contrast and excelling in color reproduction at all light-exposed regions, yellow-image sharpness, magenta-image sharpness, and cyan-image sharpness, and having its sensitivity little deteriorated during storage. The material comprises at least one light-sensitive, silver halide emulsion layer on a support, and contains at least one specified compound which releases a photographically useful group, and a yellow-colored cyan coupler.
    Type: Grant
    Filed: June 3, 1992
    Date of Patent: April 26, 1994
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Keiji Mihayashi, Atsuhiro Ohkawa
  • Patent number: 5300381
    Abstract: A system and method of image reproduction in color with preferential tone mapping in which the image reproduction is subjected to a scene parameter transformation which when taken in conjunction with untransformed characteristics of the image reproduction system and method results in a reproduced tone mapping having instantaneous gamma values of viewed reproduction density relative to density of the original scene which are greater than 1.0 and less than 1.0 plus 0.35 times scene exposure density over a scene exposure density range of from 0.6 to 1.45 as measured relative to a zero density, 100% diffuse reflector in the original scene. Preferably, the instantaneous gamma values within this scene exposure density range further lie substantially within a range of values subtended by an angle of 14.degree. as measured from a reference point at 0.0 scene exposure density and 1.0 viewed reproduction density gradient.
    Type: Grant
    Filed: September 24, 1992
    Date of Patent: April 5, 1994
    Assignee: Eastman Kodak Company
    Inventors: John D. Buhr, Harry D. Franchino
  • Patent number: 5296337
    Abstract: There are described a method for retouching photographic images, compositions adapted for such retouching, and photographic elements containing dye-forming couplers that yield dye images that particularly lend themselves to retouching by this method. The method comprises contacting a photographic element containing a dye image with a defined retouching composition to solubilize and remove selected areas or amounts of dye. The composition comprises an aqueous basic solution of a dinucleophile and a water-soluble organic co-solvent. The preferred photographic element for application of this retouching method comprises a dye image formed from a pyrazoloazole magenta dye forming coupler having a cleavable ballast group joined to the remainder of the molecule by one or two electrophilic cleavage groups. The retouching composition cleaves the ballast from the dye and solubilizes the dye, allowing it to be washed from the element.
    Type: Grant
    Filed: April 23, 1992
    Date of Patent: March 22, 1994
    Assignee: Eastman Kodak Company
    Inventors: J. Ramon Vargas, John W. Harder, Phillip D. Knight, Paul A. Burns, Lynda D. Weber
  • Patent number: 5270152
    Abstract: A color photographic element which contains a color correction layer above at least one red sensitive layer of the element results in an element having excellent color reproduction.
    Type: Grant
    Filed: December 30, 1991
    Date of Patent: December 14, 1993
    Assignee: Eastman Kodak Company
    Inventor: Jeffrey L. Hall
  • Patent number: 5266456
    Abstract: Disclosed is a silver halide color photographic material containing a silver halide emulsion having a high silver iodide content and containing a novel yellow colored cyan coupler. The material has a high sensitivity, a good graininess, an excellent color reproducibility and a sufficient sharpness. The material has at least one light-sensitive emulsion layer on a support and is characterized in that it contains at least one yellow colored cyan coupler, that the emulsion layer contains chemically sensitized silver halide grains, and that the chemically sensitized silver halide grain in the emulsion has a silver iodobromide phase with a silver iodide content of from 15 to 45 mol % as a distinctly layered structure and has a silver iodide content of more than 7 mol % based on the whole grain.
    Type: Grant
    Filed: March 26, 1991
    Date of Patent: November 30, 1993
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Keiji Mihayashi, Takayoshi Kamio
  • Patent number: 5262284
    Abstract: A photographic element including a support bearing a silver halide photographic emulsion and an image dye-forming coupler, wherein the image dye-forming coupler includes a ballasted arylidene pyrazolone which is also a filter dye that upon exposure and processing of the element is destroyed in both exposed and unexposed areas of said element or a masking coupler that upon exposure and processing is destroyed only in exposed areas of the element. The arylidene pyrazolone compound includes an oxygen-inclusive electron donating group in conjugation with the arylidene function, preferably positioned para to the arylidene function.
    Type: Grant
    Filed: July 15, 1991
    Date of Patent: November 16, 1993
    Assignee: Eastman Kodak Company
    Inventors: Philip T. S. Lau, Danny R. Thompson, Stephen P. Singer
  • Patent number: 5262285
    Abstract: A method for retouching a film image comprises applying an aqueous composition to the film image. The aqueous composition comprises from about 5 to about 300 g/l of an acid selected from the group consisting of sulfuric acid, hydrochloric acid, phosphoric acid, and mixtures thereof, from about 1 to about 100 g/l of at least one compound selected from the group consisting of ascorbic acid, oxalic acid, sulfite compounds, hydroxyl amine salts, iodide compounds, hypophosphite compounds, dithionite compounds, tin(II) compounds, and mixtures thereof, and a balance of water.
    Type: Grant
    Filed: May 4, 1992
    Date of Patent: November 16, 1993
    Assignee: Eastman Kodak Company
    Inventors: Charles M. Darmon, William G. Henry, Mary C. Kelley
  • Patent number: 5254446
    Abstract: A silver halide color negative photosensitive material comprises at least one red-sensitive silver halide emulsion layer containing a cyan coupler, at least one green-sensitive silver halide emulsion layer containing a magenta coupler and at least one blue-sensitive silver halide emulsion layer containing a yellow coupler formed on a transparent support, wherein it contains 4.times.10.sup.-4 to 3 g, per m.sup.2 of the support, of a ferromagnetic fine powder and that the green-sensitive emulsion layer contains a coupler such as ##STR1## The photosensitive material makes it possible to shorten a printing time and has an excellent sharpness.
    Type: Grant
    Filed: May 24, 1991
    Date of Patent: October 19, 1993
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Shinpei Ikenoue, Toshiyuki Watanabe, Seiji Ichijima
  • Patent number: 5250397
    Abstract: A method for processing a silver halide color photographic material is disclosed, which comprises: color developing a silver halide color photographic material with a color developer containing an aromatic primary amine color developing agent, followed by processing with a processing solution having a bleaching ability, wherein the replenishment rate of said color developer is in the range of 600 ml or less per m.sup.2 of the photographic material, and wherein said silver halide color photographic material contains at least one yellow colored cyan coupler.
    Type: Grant
    Filed: April 2, 1991
    Date of Patent: October 5, 1993
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Katsushige Kamada, Keiji Mihayashi, Yoshihiro Fujita
  • Patent number: 5238797
    Abstract: Disclosed is a silver halide color photographic light sensitive material comprising a support having thereon a blue-sensitive silver halide emulsion layer, a green-sensitive silver halide emulsion layer and a red-sensitive silver halide emulsion layer, wherein at least one of green-sensitive silver halide emulsion layers contains at least one of colored magenta couplers represented by Formula CM-1 and at least one of dyes having absorption maximum at 590 nm to 610 nm is contained in at least one of layers selected from the layers consisting of silver halide emulsion layers and photographic constitution layers; ##STR1## wherein R.sub.1 represents a substituent, R.sub.2 represents an acylamino group, a sulfonamide group, an imide group, a carbamoyl group, a sulfamoyl group, an alkoxyl group, an alkoxycarbonyl group, an alkoxycarbonylamino group, R.sub.3 represents a halogen atom, an alkoxy group, m is an integer of 0 to 5, n is an integer of 0 to 4.
    Type: Grant
    Filed: July 9, 1992
    Date of Patent: August 24, 1993
    Assignee: Konica Corporation
    Inventors: Shigeto Hirabayashi, Shuichi Sugita, Katsumasa Yamazaki
  • Patent number: 5219719
    Abstract: A silver halide photographic light-sensitive material is disclosed. The light-sensitve material comprises a support having thereon a hydrophilic colloid containing a compound represented by the following Formula I as a colored coupler, ##STR1## wherein R.sup.1 is a substituent; R.sup.3 is a halogen atom or an alkoxy group; R.sup.2 is an acylamino group, a sulfonamido group, an imido group, a carbamoyl group, a sulfamoyl group, an alkoxycarbonyl group or an alkoxycarboxyamido group; m is an integer of 0 to 5 and n is an integer of 0 to 4. The light-sensitive material has a good color reproducibility caused by the masking effect of the colored coupler with less lossing in the speed.
    Type: Grant
    Filed: May 2, 1991
    Date of Patent: June 15, 1993
    Assignee: Konica Corporation
    Inventor: Shuji Kida
  • Patent number: 5204232
    Abstract: Disclosed is a light-sensitive silver halide photographic material having at least one silver halide emulsion layer on a support, characterized in that at least one layer of the above silver halide emulsion layers contains a compound represented by the following formula (I): ##STR1## wherein n represents 0 or 1; A represents a compound residue which cleaves a bonding to Time in the case of n=1 or a compound residue which cleaves one of bondings to FL in the case of n=0; Time represents a timing group which cleaves a bonding to FL after cleavage from A; and FL represents a compound residue which emits fluorescence by cleavage of a bonding to Time in the case of n=1 and a compound residue which emits fluorescence by cleavage of one of bondings to A in the case of n=0.
    Type: Grant
    Filed: March 11, 1991
    Date of Patent: April 20, 1993
    Assignee: Konica Corporation
    Inventors: Hirokazu Sato, Shigeo Tanaka, Satoru Ikesu
  • Patent number: 5169749
    Abstract: The improved silver halide photographic material has a substantially colorless coupler that has a leaving group with a protected formyl group at the active site, said protected formyl group being such that subsequent to the elimination of the leaving group upon coupling reaction, the protective group for a formyl group undergoes cleavage, causing reaction with an aromatic primary amine to form a ballasted Schiff type dye. The novel substantially colorless coupler is capable of highly efficient dye formation.
    Type: Grant
    Filed: April 17, 1991
    Date of Patent: December 8, 1992
    Assignee: Konica Corporation
    Inventors: Eisaku Katoh, Shuji Kida, Shuichi Sugita
  • Patent number: 5166042
    Abstract: Disclosed is a silver halide color photographic photosensitive materials comprising, on a support, at least one red-sensitive silver halide emulsion layer, at least one green-sensitive silver halide emulsion layer, and at least one blue-sensitive silver halide emulsion layer. The ISO speed of the photosensitive material is S. The difference (S.sub.G.sup.560 -S.sub.R.sup.560) is in the range of from -0.2 to 1.0. Here, S.sub.G.sup.560 and S.sub.R.sup.560 are, respectively, the speed of the green-sensitive silver halide emulsion layer and the speed of the red-sensitive silver halide emulsion layer with respect to monochromatic light of a wavelength of 560 nm, measured after subjecting the photosensitive material to a uniform exposure of 2/S lux.sec with white light.
    Type: Grant
    Filed: December 20, 1989
    Date of Patent: November 24, 1992
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Yasushi Nozawa
  • Patent number: 5151336
    Abstract: A masking material with a semiopaque layer containing a coloring agent, characterized in that the semiopaque layer permits the transmission of the light at a wavelength corresponding to the "green-lack" wavelength of color paper.
    Type: Grant
    Filed: September 10, 1990
    Date of Patent: September 29, 1992
    Assignee: Kimoto Co., Ltd.
    Inventor: Toshie Yokosuka
  • Patent number: 5135841
    Abstract: Colored copies of outstanding quality are obtained from half tone originals by means of a color paper of extremely hard gradation if the silver halide emulsions of the color paper consists substantially of silver chloride and if, before the material is processed, a filtered, homogeneous exposure is carried out, extending from sub-threshold pre-exposure to an exposure which reduces the maximum color densities by 0.4 density units.
    Type: Grant
    Filed: June 6, 1990
    Date of Patent: August 4, 1992
    Assignee: Agfa Gevaert Aktiengesellschaft
    Inventors: Ubbo Wernicke, Herbert Mitzinger, Udo Quilitzsch
  • Patent number: 5112730
    Abstract: A silver halide color photographic material comprises a support having thereon at least one silver halide emulsion layer and at least one cyan coupler which can release a water-soluble compound residual group which contains a 2-acyaminophenylazo group or 2-sulfonamidophenylazo group via a coupling reaction with an oxidation product of a primary aromatic amine developing agent.
    Type: Grant
    Filed: December 5, 1990
    Date of Patent: May 12, 1992
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Atsuhiro Ohkawa, Takayoshi Kamio, Masuzi Motoki, Keiji Mihayashi
  • Patent number: 5079132
    Abstract: A method for forming a color positive image which comprises steps of:(a) exposing a color positive type silver halide material including a support having thereon at least two silver halide emulsion layers which have different spectral sensitivity distribution from each other, to light passed through a filter having at least one absorption band where light is absorbed in a sharp width; at least one absorption peak thereof being in a wavelength of from 480 to 520 nm or from 580 to 620 nm, the optical density of the absorption peak being at least 0.8; the 3/4 value width of the absorption peak, designated as W 3/4, being at least 5 nm and the 3/4 value width of the absorption peak and the 1/4 value width of the absorption peak, designated as W 1/4, satisfying the following relation:W3/4= W1/4.ltoreq.30 nm.and(b) developing the exposed material.
    Type: Grant
    Filed: September 16, 1988
    Date of Patent: January 7, 1992
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Akio Mitsui, Nobuyuki Kimura, Junichi Tamano, Mitsugi Kawakami
  • Patent number: 5051341
    Abstract: There is described a process for recording a positive or negative continuous tone color copy having the same or lower contrast than a continuous tone original image, comprising the steps of:providing a photographic element comprising a support having thereon a silver halide emulsion unit capable of forming a yellow image, a silver halide emulsion unit capable of formign a cyan image, and a silver halide emulsion unit capable of forming a magnenta image, each image-forming unit having a maximum spectral sensitivity at a different wavelength of radiation, and at least one of the image-forming units having a gamma as described herein,receiving image data representing the densities of the yellow, magenta, and cyan records of the original image,modifying said image data and using it to control three exposure sources, each emitting radiation in the region of maximum spectral sensitivity for a corresponding one of the image-forming units, so that, after exposure, the recorded image density range for at least one of
    Type: Grant
    Filed: October 20, 1989
    Date of Patent: September 24, 1991
    Assignee: Eastman Kodak Company
    Inventors: Annabel A. Muenter, James C. Owens
  • Patent number: 5049474
    Abstract: A novel color light-sensitive material is provided, which comprises a support having theron at least a light-sensitive silver halide, an image-forming coupler, and a compound represented by formula (I):PWR--Time).sub.t Z [I]wherein PWR represents a group which undergoes reduction to release --Time).sub.t Z; Time represents a group which releases Z through a reaction after being released as --Time).sub.t Z; t represents an integer of 0 or 1; and Z represents a group which becomes a slightly mobile dye or a precursor thereof after being released from --Time).sub.t Z.
    Type: Grant
    Filed: May 20, 1988
    Date of Patent: September 17, 1991
    Assignee: Fuji Photo Film Co., Ltd
    Inventors: Seiji Ichijima, Kei Sakanoue
  • Patent number: 5032496
    Abstract: A light-sensitive color photographic material with improved color reproducibility which comprises on a support a plurality of light-sensitive silver halide emulsion layers including a red-sensitive silver halide emulsion layer, a green-sensitive silver halide emulsion layer, a blue-sensitive silver halide emulsion layer and at least one silver halide emulsion layer having reverse photo-response to that of the red-, green-, and blue-sensitive silver halide emulsion layers, being capable of forming a reverse dye image having substantially the same hue as that is to be formed in the green-sensitive silver halide emulsion layer, and having maximun sensitivity wavelength (.lambda.-G) of the spectral sensitivity distribution in the region of from 400nm to 500nm.
    Type: Grant
    Filed: April 24, 1990
    Date of Patent: July 16, 1991
    Assignee: Konica Corporation
    Inventors: Tsuyoshi Hattori, Shin-ichi Daiba
  • Patent number: 5019493
    Abstract: A silver halide photographic material that has at least one silver halide emulsion layer containing a phenolic cyan coupler of the general formula (I) and an amine of the general formula (II). The maximum absorption of the dye formed in sufficiently shifted to a longer wavelength range of the spectrum to achieve satisfactory color reproduction. The dye image produced has a high maximum density and improved keeping quality.
    Type: Grant
    Filed: January 29, 1990
    Date of Patent: May 28, 1991
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Hirokazu Sato, Shigeto Hirabayashi
  • Patent number: 5006437
    Abstract: A process for forming a color image is disclosed. In the process a photographic material which comprises a light-sensitive silver halide emulsion layer containing a 2,5-diacylaminophenol-based cyan coupler at a ratio of over 50 mol % of the total cyan coupler is processed with a color developer containing a color developing agent represented by Formula I at a ratio of over 55 mol % of total developing agent in the color developer, ##STR1## wherein R.sub.1 and R.sub.2 independently represent a substituted or unsubstituted alkyl group, and R.sub.1 and R.sub.2 may link together to form a ring.
    Type: Grant
    Filed: August 30, 1989
    Date of Patent: April 9, 1991
    Assignee: Konica Corporation
    Inventors: Tomomi Yoshizawa, Nariko Kimura
  • Patent number: 4992357
    Abstract: A silver halide color photographic light-sensitive material having an excellent adhesion resistance and capable of preventing deterioration of quality of processed images is disclosed. The light-sensitive material having a support and provided thereon, the photographic component layers including each at least one red-sensitive layer comprising at least a masking cyan coupler, green-sensitive layer comprising at least a masking magenta coupler, and blue-sensitive layer, is characterized by that:A. an uppermost layer of said photographic component layers comprises an alkali-soluble matting agent,B. a total amount of coated silver is 15 to 45 mg/dm.sup.2.
    Type: Grant
    Filed: July 3, 1989
    Date of Patent: February 12, 1991
    Assignee: Konica Corporation
    Inventors: Yoshihiro Haga, Hiroshi Shimazaki, Atsuo Ezaki, Yoshiro Shigetomi
  • Patent number: 4990430
    Abstract: A method of retouching a dye image comprises selective removal with an aqueous acidic organic solvent solution, as described in the application, of a portion of a dye image from an exposed and processed photographic silver halide element comprising a support bearing a dye image from a dye-forming coupler and a primary amine photographic color developing agent, wherein the dye-forming coupler: (a) contains no ionizable group that is retained as part of a dye formed upon oxidative coupling, (b) has a structure such that the Log P of the coupler is greater than 4 and is derived from a four-equivalent coupler that has a Log P less than 8, and (c) has a coupling reactivity that enables formation of maximum image density of at least 0.6. The method comprises the step of contacting the dye image with an aqueous acidic organic solvent solution, as described in the application, for a time and at a temperature sufficient to selectively dissolve and remove a portion of the dye image from the photographic element.
    Type: Grant
    Filed: December 19, 1989
    Date of Patent: February 5, 1991
    Assignee: Eastman Kodak Company
    Inventors: John W. Harder, Paul A. Burns
  • Patent number: 4977521
    Abstract: At least one frame of a strip of photographic film is exposed to an image, and, prior to being developed, six (or so) calibration strips in a specially reserved frame on the same film are individually exposed to six predetermined calibration light sources producing six progressively increasing exposure levels spanning the exposure latitude of the film. A film layer develops a positive image in one color and a negative image in another color using positive and negative dyes, respectively. The film is scanned to determine the positive and negative dye amounts, D.sub.p and D.sub.n at each scanner pixel. The likeliest exposure value E as a function of D.sub.n and D.sub.p is determined probabilistically from six histograms obtained by scanning the six calibration patches on the film, all of the E's thus obtained being stored in a look-up table addressed by the corresponding values of D.sub.p and D.sub.n. The images recorded on the film are then scanned pixel-by-pixel, the D.sub.p and D.sub.
    Type: Grant
    Filed: July 25, 1988
    Date of Patent: December 11, 1990
    Assignee: Eastman Kodak Company
    Inventor: Martin C. Kaplan
  • Patent number: 4977072
    Abstract: Improved color graininess can be obtained with a color photographic recording material containing in association with a silver halide emulsion layer unit a non-diffusing colored color coupler which, in the coupling position, contains a diffusion-proofing primary ballast group which is attached through an azo group and which is releasable during the color coupling reaction and which coupler gives a hydrophobic dye of limited mobility in the color coupling reaction.
    Type: Grant
    Filed: June 29, 1988
    Date of Patent: December 11, 1990
    Assignee: Agfa-Gevaert Aktiengesellschaft
    Inventors: Gunter Renner, Reinhart Matejec
  • Patent number: 4973535
    Abstract: This invention relates to a color photographic silver halide recording material containing a dye image-forming coupler compound and a sulfonamide compound which is capable of altering the spectral absorption properties of a dye formed by reaction of the coupler compound with oxidized developing agent.
    Type: Grant
    Filed: August 12, 1988
    Date of Patent: November 27, 1990
    Assignee: Eastman Kodak Company
    Inventors: Paul B. Merkel, David J. Giacherio
  • Patent number: 4968594
    Abstract: A negative-working silver halide color photographic material is disclosed which has at least one silver halide emulsion layer on a support, said material including a pyrazolotriazole-based magenta coupler and means for forming an unsharp positive image.
    Type: Grant
    Filed: June 1, 1989
    Date of Patent: November 6, 1990
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Hiroshi Shimazaki, Mitsuto Fujiwhara
  • Patent number: 4968587
    Abstract: The method for producing color prints having high quality which are available for long-period conservation by using a color positive filter to make plural color separation negatives and black and white positives before printing through color filters on silver dye bleach film.
    Type: Grant
    Filed: April 6, 1988
    Date of Patent: November 6, 1990
    Assignee: Kabushiki Kaisha Doi
    Inventor: Keiziro Sekine
  • Patent number: 4956269
    Abstract: A silver halide color photographic material comprising a support having thereon at least one red-sensitive silver halide emulsion layer, at least one green-sensitive silver halide emulsion layer and at least one blue-sensitive silver halide emulsion layer, wherein each of the green-sensitive silver halide emulsion layer, the red-sensitive silver halide emulsion layer and the blue-sensitive silver emulsion layer contains at least one color image forming coupler, and wherein 50% or more of the total projected area of the silver halide grains in at least one of the emulsion layers comprises tabular silver halide grains having a thickness of less than 0.5 .mu.m, a diameter of 0.6 .mu.
    Type: Grant
    Filed: November 27, 1989
    Date of Patent: September 11, 1990
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Hideo Ikeda, Shigeru Ohno