Interlayer Correction Coupler (icc) Patents (Class 430/956)
  • Patent number: 7108964
    Abstract: The invention relates to a novel kind of anthranilic acid compound that releases a UG as a function of chemical bond cleavage according to Formula (I): Q-(AAS)-UG where UG is an useful group and is chemically bonded to (AAS); (AAS) is an anthranilic acid switching group; and Q is a group in which the bond to (AAS) is broken so that the -(AAS)-UG fragment subsequently decomposes to the free UG.
    Type: Grant
    Filed: August 5, 2005
    Date of Patent: September 19, 2006
    Assignee: Eastman Kodak Company
    Inventors: Stephen P. Singer, Philip A. Allway, Trevor J. Wear, Louis E. Friedrich, Siu (Lambert) C. Tsoi, Bernard A. Clark, Paul L. Stanley
  • Patent number: 6974662
    Abstract: Improved compounds and base precursors that undergo thermal decomposition are disclosed. Thermal base precursors, and in particular, a novel class of salts of arylsulfonylacetic acids as bleaching agents or promoting for photothermographic use are disclosed. Compositions employing these thermal base precursors are suitable for use in acutance and antihalation systems, bleachable filter dye materials, and in promoting unblocking of various components such as blocked developers, especially in photothermographic elements.
    Type: Grant
    Filed: August 4, 2003
    Date of Patent: December 13, 2005
    Assignee: Eastman Kodak Company
    Inventors: Ramanuj Goswami, Wojciech K. Slusarek, David H. Levy
  • Patent number: 6280919
    Abstract: The invention provides a photographic element comprising a light-sensitive silver halide emulsion layer having associated therewith a coupler based on a 1-aryl-3-arylpyrazol-5-one ring and represented by formula I: wherein the substituents are as described in the specification.
    Type: Grant
    Filed: December 30, 1998
    Date of Patent: August 28, 2001
    Assignee: Eastman Kodak Company
    Inventors: Wojciech K. Slusarek, Jerrold N. Poslusny, Zheng Z. Wu
  • Patent number: 6261750
    Abstract: A silver halide color light-sensitive material contains at least one light-sensitive silver halide emulsion layer and at least one non-light-sensitive layer on a support, wherein at least one of the non-light-sensitive layers contains a silver halide emulsion having a previously fogged surface, and the non-light-sensitive layer containing the previously fogged emulsion and/or its adjacent layer contains a compound capable of releasing a photographically useful group or its precursor by a coupling reaction with the oxidized form of a developing agent, wherein the previously fogged emulsion is developed during color development to evenly form the oxidized form of a color developing agent, and the photographically useful group or its precursor is released non-imagewise by the coupling reaction.
    Type: Grant
    Filed: March 31, 2000
    Date of Patent: July 17, 2001
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Yoshio Ishii, Takayuki Ito, Fumitaka Ueda, Hiroyuki Yoneyama
  • Patent number: 6171772
    Abstract: A silver halide color photosensitive material comprises blue-, green-, and red-sensitive silver halide emulsion layers on a support, and at least one layer of the material contains a compound represented by formula (I) below in an amount that satisfies a relation X/(X+Y)≧0.
    Type: Grant
    Filed: April 15, 1999
    Date of Patent: January 9, 2001
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Akira Ikeda, Takayuki Ito, Koji Takaku
  • Patent number: 6156490
    Abstract: Disclosed is a photographic element comprising a light-sensitive silver halide emulsion layer having associated therewith a coupler based on a 1-aryl-3-arylpyrazol-5-one or a 1-aryl-3-alkylpyrazol-5-one ring and represented by formula I: ##STR1## wherein: X represents an aryl, alkyl, alkylamino, or arylamino group;Y can be carbon or sulfur; in is 1 when Y is carbon and 2 when Y is sulfur;R represents a halogen or an alkyl group; and o is 0 to 4, provided that two or more R substituents may join to form one or more additional rings;Z is either (a) an aryl group represented as Ar.sup.3 Q(n) where Q represents n independently selected substituents bonded to the Ar.sup.3 ring; and n is 0 to 5, provided that two or more Q substituents may join to form one or more additional rings or (b) an alkyl group;OAr.sup.4 is an aryloxy group; andP represents p independently selected substituents bonded to the OAr.sup.
    Type: Grant
    Filed: December 30, 1998
    Date of Patent: December 5, 2000
    Assignee: Eastman Kodak Company
    Inventors: Wojciech K. Slusarek, Jerrold N. Poslusny, Xiqiang K. Yang
  • Patent number: 6153369
    Abstract: Disclosed is a photographic element comprising a light-sensitive silver halide emulsion layer having associated therewith a pyrazol-5-one coupler bearing a 4-aryloxy coupling-off group containing a group capable of releasing a photographically useful group (PUG) wherein:(1) the pyrazol-5-one ring contains a 1-aryl substituent which in turn contains, in a position ortho to the bond linking it to the pyrazolone ring, a secondary carbonamido group or a secondary sulfonamido group;(2) the pyrazol-5-one ring contains either (a) a 3-aryl substituent which in turn contains substituents for which the sum of the Hammett's .sigma. constant values is -0.3 or higher or (b) a 3-alkyl substituent; and(3) the 4-aryloxy coupling-off group:(a) contains ring substituents selected so that the sum of the Hammett's .sigma. constant values for all substituents on the phenoxy ring is at least 0.
    Type: Grant
    Filed: December 30, 1998
    Date of Patent: November 28, 2000
    Assignee: Eastman Kodak Company
    Inventors: Wojciech K. Slusarek, Jerrold N. Poslusny, Xiqiang K. Yang
  • Patent number: 6150078
    Abstract: The invention provides a photographic element comprising a light-sensitive silver halide emulsion layer having associated therewith an 1-arylpyrazol-5-one coupler bearing a 4-aryloxy coupling-off group containing a group capable of releasing a photographically useful group (PUG) wherein:(1) the 1-arylpyrazol-5-one ring contains a 3-aryl substituent which in turn contains substituents for which the sum of the Hammett's .sigma. constant values is at least 0, provide that two or more such substituents may join to form one or more additional rings; and(2) the 4-aryloxy coupling-off group:(a) contains ring substituents selected so that the sum of the Hammett's sigma constant values for all substituents on the aryloxy ring is at least 0.
    Type: Grant
    Filed: December 30, 1998
    Date of Patent: November 21, 2000
    Assignee: Eastman Kodak Company
    Inventors: Wojciech K. Slusarek, Jerrold N. Poslusny, Zheng Z. Wu, Xiqiang Yang
  • Patent number: 6150079
    Abstract: A color photographic material, the cyan coupler of which is of the formula ##STR1## in which R.sub.11 means an alkyl, aryl, acylamino, alkylcarbamoyl, arylcarbamoyl or a heterocyclic group,R.sub.12 means a group having electron-attracting characteristics,R.sub.13 means a group having electron-attracting characteristics,R.sub.14 means an alkyl or aryl group,R.sub.15 means a divalent linking member having 2 to 4 linking atoms,X means .dbd.O or .dbd.N--SO.sub.2 R.sub.21 andY means a group eliminable by hydrolytic or intramolecular (nucleophilic) attack,is distinguished by improved processing stability.
    Type: Grant
    Filed: January 8, 1999
    Date of Patent: November 21, 2000
    Assignee: Agfa Gevaert N.V
    Inventor: Peter Bergthaller
  • 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: 5981157
    Abstract: A silver halide light-sensitive color photographic material comprising containing a coupler is disclosed.
    Type: Grant
    Filed: December 23, 1996
    Date of Patent: November 9, 1999
    Assignee: Konica Corporation
    Inventors: Shinri Tanaka, Michiko Nagato
  • Patent number: 5912110
    Abstract: A photographic element comprising a support having situated thereon at least one silver halide emulsion layer, the layer containing a photographic coupler represented by the formula ##STR1## wherein COUP is a coupler moiety having a coupling site to which T.sup.1 is attached;T.sup.1 is a timing or linking group which releases from COUP during processing and which functions by electron transfer down a conjugated chain, or by nucleophilic displacement reaction, to release from HETERO;HETERO is a heterocyclic group containing at least two heteroatoms independently selected from oxygen, nitrogen, or sulfur, wherein one of the heteroatoms is directly attached to T.sup.1 ;R.sup.1 and R.sup.2 are independently selected from hydrogen, or an aliphatic, carbocyclic, or heterocyclic group, or may be bonded together to form a 5, 6, or 7 membered ring; andPUG is a photographically useful group.
    Type: Grant
    Filed: June 10, 1997
    Date of Patent: June 15, 1999
    Assignee: Eastman Kodak Company
    Inventors: William James Begley, Teh Hsuan Chen, Frank Dino Coms, Donald Singleton, Jr.
  • Patent number: 5830627
    Abstract: A silver halide color photographic material is described, which comprises a support having provided thereon a blue-sensitive silver halide emulsion layer, a green-sensitive silver halide emulsion layer, and a red-sensitive silver halide emulsion layer, wherein the photographic material contains at least one compound having a photographically useful compound which is inactivated by the chelation with a metal, and the ratios of the gradients of yellow, magenta and cyan in specific development processing II to the gradients thereof in specific development processing I satisfy the following conditions:0.8.ltoreq..gamma..sub.II (Y)/.gamma..sub.I (Y).ltoreq.1.20.8.ltoreq..gamma..sub.II (M)/.gamma..sub.I (M).ltoreq.1.20.8.ltoreq..gamma..sub.II (C)/.gamma..sub.I (C).ltoreq.1.2wherein .gamma..sub.I (Y), .gamma..sub.I (M) and .gamma..sub.I (C) each represents the gradient of yellow, magenta or cyan when the development processing I is carried out and .gamma..sub.II (Y), .gamma..sub.II (M) and .gamma..sub.
    Type: Grant
    Filed: April 2, 1997
    Date of Patent: November 3, 1998
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Yasufumi Nakai, Jiro Tsukahara, Toshio Kawagishi
  • Patent number: 5827638
    Abstract: A silver halide photographic light-sensitive material is described, which comprises a support having provided thereon a light-sensitive silver halide emulsion layer, wherein the silver halide photographic material contains a compound having been blocked by a metal chelate and capable of releasing a photographically useful compound therefrom through a reaction of the metal chelate moiety with a water-soluble chelating agent capable of forming a metal chelate having a higher stability constant on development. A method for forming an image is also described, which comprises processing, after imagewise exposure, a silver halide photographic light-sensitive material with a processing solution containing a nitrogen-containing heterocyclic carboxylic acid-base chelating agent.
    Type: Grant
    Filed: March 20, 1997
    Date of Patent: October 27, 1998
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Jiro Tsukahara, Hideaki Satoh, Osamu Uchida, Toshio Kawagishi, Yasufumi Nakai
  • Patent number: 5827637
    Abstract: A silver halide light-sensitive material is disclosed, comprising a compound represented by the following formula (1): ##STR1## wherein PUG represents a photographically useful group bonded to B through a hetero atom thereof, CHL represents a multidentate ligand capable of coordinating to a metal atom, B represents a block group of which bonding to PUG is cleaved on cleavage of the bonding of CHL--M, M represents a divalent or greater metal, L represents a chelating ligand, m represents an integer of from 1 to 3, n represents 0 or an integer of 1 or 2, and the sum of m and n does not exceed 3. Also disclosed is an image formation method using the above-described silver halide light-sensitive material.
    Type: Grant
    Filed: March 19, 1997
    Date of Patent: October 27, 1998
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Osamu Uchida, Jiro Tsukahara, Toshio Kawagishi, Hideaki Satoh, Yasufumi Nakai
  • Patent number: 5686234
    Abstract: A photographic element comprising a support having situated thereon at least one silver halide emulsion layer, the layer containing a photographic coupler represented by the formulaCOUP--T.sup.1 --T.sup.2 --(T.sup.3).sub.b --PUGwhereinCOUP is a coupler moiety having a coupling site to which T.sup.1 is attached;T.sup.1 is a timing or linking group which releases from COUP during processing and which functions by electron transfer down a conjugated or unconjugated chain, or by nucleophilic displacement reaction, to release T.sup.2, T.sup.2 being an indazole timing or linking group which, after release from T.sup.1, functions by electron transfer down a conjugated chain to release T.sup.3 or PUG, and which is represented by the formula: ##STR1## wherein ** denotes the point of attachment to T.sup.1 and *** denotes the point of attachment to T.sup.3 or PUG;R.sup.1 and R.sup.
    Type: Grant
    Filed: January 24, 1996
    Date of Patent: November 11, 1997
    Assignee: Eastman Kodak Company
    Inventors: William James Begley, Teh Hsuan Chen, Donald Singleton, Jr., Frank Dino Coms
  • Patent number: 5670301
    Abstract: A photographic element comprising a support having situated thereon at least one silver halide emulsion layer, the layer containing a photographic coupler represented by the formula ##STR1## wherein COUP is a coupler moiety having a coupling site to which T.sup.1 is attached;T.sup.1 is a timing or linking group which releases from COUP during processing and which functions by electron transfer down a conjugated chain, or by nucleophilic displacement reaction, to release from HETERO;HETERO is a heterocyclic group containing at least two heteroatoms independently selected from oxygen, nitrogen, or sulfur, wherein one of the heteroatoms is directly attached to T.sup.1 ;R.sup.1 and R.sup.2 are independently selected from hydrogen, or an aliphatic, carbocyclic, or heterocyclic group, or may be bonded together to form a 5, 6, or 7 membered ring; andPUG is a photographically useful group.
    Type: Grant
    Filed: January 24, 1996
    Date of Patent: September 23, 1997
    Assignee: Eastman Kodak Company
    Inventors: William James Begley, Teh Hsuan Chen, Frank Dino Coms, Donald Singleton, Jr.
  • Patent number: 5529894
    Abstract: Disclosed is a silver halide color photographic material which comprises a support having thereon at least one photosensitive silver halide emulsion layer, a pyrazoloazole based magenta coupler, and a coupler which contains a plurality of photographically useful groups or precursors thereof. The photograhically useful groups or precursors thereof are capable of being released when the coupler undergoes a coupling reaction with the oxidized product of a color developing agnet.
    Type: Grant
    Filed: March 9, 1994
    Date of Patent: June 25, 1996
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Keiji Mihayashi, Atsuhiro Ohkawa
  • Patent number: 5447833
    Abstract: A silver halide photographic material having on a support at least one silver halide emulsion layer, which contains at least one precursor of the kind which releases at least two groups selected from the group consisting of a photographically useful group and a precursor thereof via a timing group, wherein plural photographically useful groups or precursors thereof are present on different constituent atoms of said timing group, provided that when the plural photographically useful groups have different functions, the timing group is a group which does not utilize an intramolecular nucleophilic substitution reaction.
    Type: Grant
    Filed: April 28, 1994
    Date of Patent: September 5, 1995
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Masuji Motoki, Atsuhiro Ohkawa, Keiji Mihayashi
  • Patent number: 5437965
    Abstract: A silver halide color photographic material comprising a support having thereon at least one yellow coupler-containing blue-sensitive silver halide emulsion layer (BL), at least one magenta coupler-containing green-sensitive silver halide emulsion layer (GL) and at least one cyan coupler-containing red-sensitive silver halide emulsion layer (RL); wherein the weight-averaged wavelength of the spectral sensitivity distribution of GL (.lambda..sub.G) of the photographic material is between 520 nm and 580 nm (520 nm.ltoreq..lambda..sub.G .ltoreq.580 nm), the weight-averaged wavelength of the spectral sensitivity distribution of RL (.lambda..sub.R) of the photographic material is between 590 nm and 650 nm (590 nm.ltoreq..lambda..sub.R .ltoreq.650 nm), and the weight-averaged wavelength of the spectral sensitivity distribution of BL (.lambda..sub.B) of the photographic material is between 430 nm and 480 nm (430 nm.ltoreq..lambda..sub.B .ltoreq.
    Type: Grant
    Filed: December 20, 1994
    Date of Patent: August 1, 1995
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Minoru Uchida, Toshio Kawagishi, Shunichi Tomita
  • Patent number: 5372919
    Abstract: A polymeric material is provided comprising a blocked photographically useful group (PUG). The incorporated blocked photographically useful group includes a PUG and a blocking group that is capable of releasing the PUG upon processing the photographic element, wherein the blocking group(a) is capable of reacting with a dinucleophile reagent, and(b) comprises two electrophilic groups that are separated from each other by a substituted atom that enables a nucleophilic displacement reaction to occur with release of PUG upon processing the photographic element in the presence of a dinucleophile reagent, wherein the group that is less electrophilic is bonded directly or through at least one releasable timing group to the PUG.Photographic elements and emulsions including the inventive polymers, and processes for developing an image in the elements, are also provided.
    Type: Grant
    Filed: March 22, 1993
    Date of Patent: December 13, 1994
    Assignee: Eastman Kodak Company
    Inventors: Ralph B. Nielsen, David T. Southby, Katherine Root, Hwei-Ling Yau
  • Patent number: 5256529
    Abstract: A magenta dye-forming pyrazolotriazole coupler solubilized by one or two sulfonamido groups results in a coupler having increased coupling activity, low fog and good dispersability. The couplers are useful in photographic elements and react with oxidized silver halide to form dyes, and/or to release photographically useful groups.
    Type: Grant
    Filed: July 27, 1992
    Date of Patent: October 26, 1993
    Assignee: Eastman Kodak Company
    Inventors: Robert F. Romanet, Hans G. Ling, David Hoke
  • Patent number: 5169746
    Abstract: A silver halide color photographic photo-sensitive material comprises a support, and a layer arrangement formed on the support. The layer arrangement includes a red-sensitive silver halide emulsion layer containing a color coupler capable of forming cyan dye upon reacting with an oxidation product of a developing agent, a green-sensitive silver halide emulsion layer containing a color coupler capable of forming magenta dye upon reacting with the oxidation product of the developing agent, and a blue-sensitive silver halide emulsion layer containing a color coupler capable of forming yellow dye upon reacting with the oxidation product of the developing agent. The red-sensitive layer has a sensitivity at 650 nm of 50% or less of its maximum sensitivity, and contains substantially no magenta-colored couplers.
    Type: Grant
    Filed: December 24, 1990
    Date of Patent: December 8, 1992
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Noboru Sasaki
  • Patent number: 5021329
    Abstract: In accordance with the present invention a silver halide photographic material having at least one silver halide emulsion layer on a base, which comprises at least one of compound having a dye precursor residue is disclosed. The silver halide photographic material is high in sensitivity and improved in color reproduction.
    Type: Grant
    Filed: January 27, 1989
    Date of Patent: June 4, 1991
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Toshio Kawagishi, Atsuhiro Ohkawa, Seiji Ichijima
  • Patent number: 5019492
    Abstract: A novel blocked photographically useful compound comprises a new blocking group that (a) comprises two electrophilic groups, the least electrophilic of which is bonded directly or through a timing group to the photographically useful group (PUG) of the compound, (b) is capable of reacting with a dinucleophile reagent, and (c) has the two electrophilic groups separated from each other by a bond or unsubstituted or substituted atom that enables nucleophilic displacement to occur with release of PUG when the compound is reacted with a dinucleophile reagent. Such a blocked photographically useful compound is useful in a photographic material and process to provide increased stability and enable more rapid release of the photographically useful group upon reaction with a dinucleophile reagent.
    Type: Grant
    Filed: April 26, 1989
    Date of Patent: May 28, 1991
    Assignee: Eastman Kodak Company
    Inventors: John M. Buchanan, Ewell R. Cook, Jared B. Mooberry, Gary S. Proehl, Stephen P. Singer, William N. Washburn
  • Patent number: 4994363
    Abstract: A novel silver halide light-sensitive material is provided, comprising a compound represented by the general formula (I): ##STR1## wherein EAG represents an aromatic group which receives electrons from a reducing substance; R.sup.1 represents hydrogen atom or a substituent; R.sup.2 represents an electrophilic group, with the proviso that R.sup.1 and R.sup.2 may be in the position of cis or trans to each other; R.sup.3 and R.sup.4 each represents hydrogen atom or a hydrocarbon group; ETG represents a group capable of transferring electrons; e represents an integer 0 or 1; Time represents a group which undergoes reaction triggered by the cleavage from the carbon carrying R.sup.3 and R.sup.4 to release PUG; t represents an integer 0 or 1; and PUG represents a photographically useful group.In a preferred embodiment, R.sup.1 represents an aromatic group, heterocyclic group or group represented by --Y.sup.1 --R.sup.5 in which Y.sup.1 represents a hetero atom or hetero atomic group and R.sup.
    Type: Grant
    Filed: December 19, 1988
    Date of Patent: February 19, 1991
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Keizo Koya, Koki Nakamura, Hiroyuki Watanabe, Yasuhiro Yoshioka
  • Patent number: 4956251
    Abstract: A multicolor heat-sensitive recording material which comprises a transparent support having two or more of color-producing unit layers differing in hue of the produced color in such a situation that at least one unit layer is provided on each side of the support, wherein at least one color-producing unit layer is essentially transparent, namely, Haze % of said transparent layer is less than 40% and a multicolor heat-sensitive recording material further provided a transparent protective layer on the outermost color producing unit layer are disclosed.
    Type: Grant
    Filed: March 28, 1988
    Date of Patent: September 11, 1990
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Shintaro Washizu, Toshimasa Usami, Sumitaka Tatsuta, Jun Yamaguchi
  • Patent number: 4916047
    Abstract: A silver halide light-sensitive material comprising a support having thereon at least one silver halide emulsion layer, and containing a compound containing a repeating unit, said compound containing a repeating unit being connected at the repeating unit to a compound represented by formula (I) at the position of the PWR or Time moiety:PWR--Time.sub.t PUG (I)wherein PWR represents a moiety capable of releasing (Time.sub.t PUG upon reduction, and PUG represents a group which can fulfil a photographically useful function after the release; Time represents a moiety capable of releasing PUG through a reaction subsequent to the release from PWR in the form of --Time.sub.t PUG; and t represents 0 or 1.
    Type: Grant
    Filed: April 29, 1988
    Date of Patent: April 10, 1990
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Keizo Koya, Junichi Yamanouchi, Masaharu Toriuchi, Yoshisada Nakamura
  • Patent number: 4849325
    Abstract: A light-sensitive material package unit having an exposure function is disclosed, in which said light-sensitive material comprises a support having provided thereon at least one red-sensitive silver halide emulsion layer containing at least one cyan coupler, at least one green-sensitive silver halide emulsion layer containing a magenta coupler, and at least one blue-sensitive silver halide emulsion layer containing a yellow coupler; at least one of said light-sensitive emulsion layers is composed of at least two layers being substantially the same in color sensitivity and different in sensitivity; and said light-sensitive emulsion layer composed of at least two layers contains a compound represented by formula (I)A--L.sub.1).sub.b Z.sub.1 (I)wherein A represents a component capable of releasing --(L.sub.1).sub.b Z.sub.1 upon reacting with an oxidation product of a color developing agent; L.sub.1 represents a timing group; Z.sub.
    Type: Grant
    Filed: June 30, 1987
    Date of Patent: July 18, 1989
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Noboru Sasaki, Keisuke Shiba
  • Patent number: 4837136
    Abstract: A silver halide photographic material is described comprising a support having coated thereon at least one silver halide emulsion layer, wherein at least one of the silver halide emulsion layer and other hydrophilic colloid layer contains a nondiffusible photographically useful compound having a sulfo group and a group represented by the following general formula (I): ##STR1## wherein R.sub.1 and R.sub.2 each represents an aliphatic group having at least 2 carbon atoms and r represents 0 or 1.The compounds represented by the general formula (I) are photographically useful compounds which impart excellent photographic properties to silver halide photographic materials, including improved dispersibility.
    Type: Grant
    Filed: October 9, 1986
    Date of Patent: June 6, 1989
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Seiji Ichijima, Yasuhiro Shimada, Jun Arakawa
  • Patent number: 4814261
    Abstract: A silver halide photographic material is disclosed. The photographic material comprises a support having provided thereon at least one light-sensitive silver halide emulsion layer, the silver halide emulsion layer or a layer adjacent to the emulsion layer comprising a compound represented by the following formula (I): ##STR1## wherein R.sub.1, R.sub.2, and R.sub.3, which may be the same or different, each represents a hydrogen atom or a group cleaved by an alkali; R.sub.4 represents an electron attracting group having .sigma..rho. value of Hammett's substituent constant of 0.3 or more; R.sub.5 represents a group substitutable on the benzene ring; n represents 0 or 1; and DI represents a development restrainer or a precursor thereof; and when any two of R.sub.1, R.sub.2, R.sub.3, R.sub.4 and R.sub.5 are adjacent each other, each of the two groups may represent a divalent group and the two groups may be bonded to form a heterocyclic group.
    Type: Grant
    Filed: July 16, 1987
    Date of Patent: March 21, 1989
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Seiji Ichijima, Shigeo Hirano
  • Patent number: 4806459
    Abstract: A color photographic material comprising a support having provided thereon a blue-sensitive silver halide emulsion layer containing at least one coupler capable of reacting with an oxidation product of an aromatic primary amine developing agent to form a yellow dye, at least one coupler capable of reacting with said oxidation product to form a cyan dye and not to produce a diffusible development inhibitor or a precursor thereof, and at least one compound capable of reacting with said oxidation product to produce a diffusible development inhibitor or a precursor thereof.
    Type: Grant
    Filed: May 6, 1987
    Date of Patent: February 21, 1989
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Katsumi Makino, Noboru Sasaki, Koji Takahashi
  • Patent number: 4783396
    Abstract: The present invention provides silver halide photographic materials containing a havel compound, which when reduced, releases a photographically useful group as triggered off by the cleavage of the nitrogen-oxygen single bond in the compound and which is represented by the following general formula (I): ##STR1## wherein EAG represents a group which accepts an electron from a reducing substance; N and O each represents nitrogen atom and an oxygen atom, respectively; R.sup.1 and R.sup.2 each represents a substituent other than a hydrogen atom, and when R.sup.1 or R.sup.2 is bonded to --(Time).sub.t PUG, R.sup.1 or R.sup.2 is a mere bond or a substituent other than a hydrogen atom, and R.sup.1 and R.sup.
    Type: Grant
    Filed: October 30, 1986
    Date of Patent: November 8, 1988
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Koki Nakamura, Sahigeru Nakamura
  • Patent number: 4770982
    Abstract: A silver halide photographic material is disclosed which contains a compound represented by formula (I)RED--L.sub.1).sub.v B--L.sub.2).sub.w PUG (I)wherein RED represents a group adapted to release the group (L.sub.1).sub.v B--L.sub.2).sub.w PUG upon oxidation: L.sub.1 represents a group adapted to release the group B--L.sub.2).sub.w PUG after cleavage from RED; B represents a group which, after cleavage of the bond with L.sub.1 or RED, releases the group (L.sub.2).sub.w PUG upon reaction with an oxidized developing agent; L.sub.2 represents a group which, after cleavage from B, releases PUG; PUG represents a photographically useful group; and v and w each represents 0 or 1.
    Type: Grant
    Filed: June 4, 1986
    Date of Patent: September 13, 1988
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Seiji Ichijima, Shigeo Hirano, Koki Nakamura, Keiji Mihayashi
  • Patent number: 4770990
    Abstract: A silver halide photographic material is disclosed. The material comprises a support and at least one silver halide emulsion layer formed thereon, in which said emulsion layer or other layer contains a compound represented by formula (I) ##STR1## wherein X represents an atomic group capable of releasing (Time).sub.t PUG by undergoing an oxidation-reduction reaction with CA.dbd.CR.sub.1 --CR.sub.2).sub.n C.sub.B ; C.sub.A and C.sub.B each represents a carbon atom; n represents an integer of 0, 1, 2, or 3; R.sub.1 and R.sub.2 each a hydrogen atom or a group substitutable for a hydrogen atom; EWG represents an electron withdrawing group having a Hammett's .sigma. para value greater than 0.3; --Time).sub.t PUG represents a group bonded to C.sub.B through an oxygen atom thereof; Time represents a timing group; t represents 0 or 1; and PUG represents a photographically useful group.
    Type: Grant
    Filed: April 14, 1986
    Date of Patent: September 13, 1988
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Koki Nakamura, Shigeo Hirano, Osamu Takahashi
  • Patent number: 4746600
    Abstract: Disclosed is a light-sensitive silver halide color photographic material in which a DIR compound capable of releasing a diffusible development inhibitor or precursor thereof by the reaction with an oxidized form of a color developing agent is employed in combination with a non-diffusible dye and which sastisfies Condition A and B recited in the specification.By using the color light-sensitive material according to the present invention, the sharpness, particularly the edge effect (including the fringe effect and the border effect) of a photographic image has been greatly improved.
    Type: Grant
    Filed: June 26, 1986
    Date of Patent: May 24, 1988
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Yoshikazu Watanabe, Hiroshi Shimazaki, Toshifumi Iijima, Yoshiro Shigetomi, Toshihiko Yagi
  • Patent number: 4734357
    Abstract: A silver halide color light-sensitive material is described, which is increased in sensitivity, is adapted to form an image of high contrast, or is accelerated in development by incorporating a small amount of a specific compound which imagewise releases a foggant or a development accelerator. This compound is represented by the formula: Coup-(TIME).sub.n -FA (wherein Coup represents a coupler radical capable of undergoing a coupling reaction with an oxidized product of an aromatic primary amine developing agent; TIME represents a timing group which is eliminated from Coup by the coupling reaction and, thereafter, releases FA; n is 0 or 1; and FA represents a group which is eliminated from Coup in the coupling reaction when n is 0, whereas FA is released from TIME when n is 1. The FA has adsorption properties with respect to silver halide grains and also has a substantial fogging action with respect to the silver halide grains).
    Type: Grant
    Filed: January 14, 1987
    Date of Patent: March 29, 1988
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Keiji Mihayashi, Hidetoshi Kobayashi, Isamu Itoh
  • Patent number: 4410618
    Abstract: .alpha.-Ketoimidomethyl blocked photographic reagents are useful in photographic elements, film units and processes. The blocked photographic reagents have the structure: ##STR1## wherein J represents ##STR2## X represents the atoms to complete a 5- or 6-membered ring or ring system; R represents alkyl of 1 to 30 carbon atoms or aryl of 6 to 30 carbon atoms; andPR represents the residue of an organic photographic reagent containing a heteroatom through which it is joined to the blocking group.
    Type: Grant
    Filed: June 11, 1982
    Date of Patent: October 18, 1983
    Assignee: Eastman Kodak Company
    Inventors: James P. Vanmeter, Chin H. Chen
  • Patent number: H817
    Abstract: A photographic light-sensitive material comprising a support having provided thereon at least one silver halide emulsion layer, wherein said light-sensitive material contains:(1) a compound represented by formula (I):PWR--Time--.sub.t PUG (I)wherein PWR represents a group capable of releasing (Time--.sub.t PUG upon being reduced; PUG represents a photographically useful group; Time represents a group capable of releasing PUG through a reaction subsequent to the release from PWR in the form of --Time--.sub.t PUG; and t represents 0 or 1, and(2) a polymer comprising at least 10 repeating units derived from the same monomer and having a molecular weight of 1000 or more. The photographic light-sensitive material exhibits both high activity of a compound capable of releasing a photographically useful group during development processing and preservation stability before development processing.
    Type: Grant
    Filed: April 29, 1988
    Date of Patent: September 4, 1990
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Masaharu Toriuchi, Keizo Koya