Mixture Of Couplers Patents (Class 430/549)
  • Patent number: 4741994
    Abstract: A silver halide color photographic material having improved granularity and sharpness is disclosed which comprises at least one coupler represented by formula (Ia), (Ib), or (Ic). ##STR1## wherein A represents a coupler residue which can split away from the coupler by A--X bond cleavage upon reaction with an oxidation product of a developing agent; X represents an oxygen atom, or a sulfur atom; R.sub.1 and R.sub.2 each represents an aliphatic group, an aromatic group, or a heterocyclic group; Y represents a substituent group; and n represents 0, 1, or 2, and when n is 2, the two Y's represent the same or different substituent groups, or two of substituents R.sub.1, R.sub.2 and Y represent divalent groups that combine with each other to form a ring structure.
    Type: Grant
    Filed: October 2, 1985
    Date of Patent: May 3, 1988
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Seiji Ichijima, Kohzaburoh Yamada, Hideo Usui
  • Patent number: 4724198
    Abstract: There is disclosed a light-sensitive silver halide color photographic material having red-sensitive, green-sensitive and blue-sensitive emulsion layers, each layer consisting of two or more layers with different sensitivities on a support, wherein the layers are constituted so as to satisfy the following requirements (A), (B), (C) and (D):(A) of the respective emulsion layers having the highest sensitivities among the the red-sensitive, green-sensitive and blue-sensitive emulsion layers, the highest sensitivity blue-sensitive emulsion layer is provided on the side farthest from the support;(B) at least the the highest sensitivity red-sensitive emulsion layer and the highest sensitivity green-sensitive emulsion layer are provided between the the highest blue-sensitive emulsion layer and a blue-sensitive emulsion layer with lower sensitivity;(C) none of the respective red-sensitive, green-sensitive and blue-sensitive emulsion layers having the lowest sensitivities exists on the side farther than the low sensiti
    Type: Grant
    Filed: December 15, 1986
    Date of Patent: February 9, 1988
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Yoshitaka Yamada, Toshifumi Iijima, Kenji Kumashiro, Takashi Kamio, Shinya Shimura
  • Patent number: 4696893
    Abstract: A silver halide color photographic material capable of providing color images having good coloring properties and being excellent in color reproducibility even in a developer using hard water, which contains a cyan coupler represented by formula (I) or (II) and 5-pyrazolone magenta coupler having an arylthio group at the coupling position of said coupler, wherein said arylthio group includes an aliphatic oxy group or an aromatic oxy group at an ortho-position with respect to the sulfur atom of the arylthio group, the aliphatic group or aromatic group of said aliphatic oxy group or aromatic oxy group being unsubstituted or substituted by at least one member selected from(a) a halogen atom,(b) a cyano group,(c) an unsubstituted or substituted aliphatic, aromatic, or heterocyclic sulfonyl, sulfinyl, or phosphonyl group, and(d) a group represented by the formula ##STR1## (e) a group represented by the formula--A.sub.2 -M).sub.n B.sub.
    Type: Grant
    Filed: September 30, 1985
    Date of Patent: September 29, 1987
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Makoto Umemoto, Kotaro Nakamura, Nobuo Furutachi
  • Patent number: 4690888
    Abstract: A photosensitive silver halide colored photographic material having (1) ballasted couplers combined with photosensitive silver halide emulsions and (2) colored compounds capable of reacting with oxidized developing agent, wherein the colored compounds are capable of diffusing in the photographic material during developing treatments and have their principal absorption in the main absorption wavelength region of the dye produced by the reaction of the coupler with the developing agent.
    Type: Grant
    Filed: September 10, 1985
    Date of Patent: September 1, 1987
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Mitsuto Fujiwhara, Takao Nimura, Yasumasa Numata, Yasuko Matsubara
  • Patent number: 4675280
    Abstract: A silver halide color photographic material that has at least one silver halide emulsion layer on a support is disclosed. Said silver halide emulsion layer contains at least one magenta coupler having the following formula: ##STR1## wherein R.sub.1 is a tertiary alkyl group; R.sub.2 is a primary alkyl group; and X is a halogen atom.
    Type: Grant
    Filed: October 8, 1985
    Date of Patent: June 23, 1987
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Yutaka Kaneko, Kenji Kadokura, Toshihiko Kimura, Noritaka Nakayama, Satoshi Kawakatsu, Katsunori Katoh, Kaoru Shinozaki
  • Patent number: 4666826
    Abstract: A silver halide photographic light-sensitive material comprising a support having thereon at least one silver halide emulsion layer, which contains in combination at least one cyan coupler of Formula [I], at least one cyan coupler of Formula [II], and at least one compound of Formula [III], Formula [IV] or Formula [V].
    Type: Grant
    Filed: April 19, 1985
    Date of Patent: May 19, 1987
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Shun Takada, Takashi Kadowaki, Kaoru Onodera
  • Patent number: 4665015
    Abstract: A silver halide color photographic material is disclosed which has at least one silver halide emulsion layer on a support, said silver halide emulsion layer containing at least one magenta coupler having the following formula: ##STR1## wherein R.sub.1 is a tertiary alkyl group; R.sub.2 is a secondary or tertiary alkyl group; X is a leaving group other than a hydrogen atom that leaves upon reaction with the oxidation product of a color developing agent.
    Type: Grant
    Filed: September 13, 1985
    Date of Patent: May 12, 1987
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Toshifumi Iijima, Kenji Kumashiro, Hiroshi Kashiwagi, Koichi Hatta, Noritaka Nakayama, Satoshi Kawakatsu, Katsunori Katoh, Kaoru Shinozaki
  • Patent number: 4663272
    Abstract: A silver halide photographic material is described comprising at least one layer which contains at least(1) a polymer comprising as constitutional components thereof a repeating unit having a photographically useful group and at least one repeating unit having a sulfinic acid group or a sulfinate group, and(2) a compound having at least one functional group capable of reacting with at least one of a sulfinic acid group and sulfinate group and at least one functional group capable of reacting with at least one of a sulfinic acid group, a sulfinate group and a primary amino group.Said photographic group-containing polymer (1) may be fixed in a photographic layer according to the present photographic material, and does not substantially migrate therefrom during development or other photographic treatment, thus resulting in formation of color images of high density.
    Type: Grant
    Filed: August 7, 1985
    Date of Patent: May 5, 1987
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Taku Nakamura
  • Patent number: 4647527
    Abstract: A silver halide color photographic light-sensitive material is described, which is of ultra-high-sensitivity and is characterized by having the following light-sensitive layer unit (I), (II) or (III):Unit (I): a light-sensitive layer unit comprising: (a) a blue- and green-sensitive layer containing (a-1) a yellow image-forming coupler, (a-2) a magenta image-forming coupler, and (a-3) a cyan colored coupler; and (b) a green- and red-sensitive layer containing (b-1) a cyan image-forming coupler, (b-2) a magenta image-forming coupler, and (b-3) a yellow colored coupler.Unit (II): a light-sensitive layer unit comprising: (a) a blue- and red-sensitive layer containing (a-1) a yellow image-forming coupler, (a-2) a cyan image-forming coupler, and (a-3) a magenta colored coupler; and (b) a green- and red-sensitive layer containing (b-1) a magenta image-forming coupler, (b-2) a cyan image-forming coupler, and (b-3) a yellow colored coupler.
    Type: Grant
    Filed: May 22, 1984
    Date of Patent: March 3, 1987
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Shinpei Ikenoue, Akikazu Mikawa, Seiji Ichijima
  • Patent number: 4614710
    Abstract: A silver halide photographic material having one or more silver halide emulsion layers formed on a support is disclosed, wherein at least one of said silver halide emulsion layers contains a cyan coupler of formula (I) in combination with a cyan coupler of formula (II): ##STR1## (wherein R.sub.1 is an alkyl group, an aryl group, a cycloalkyl group or a heterocyclic group; R.sub.2 is a halogen atom or a monovalent organic group; m is an integer of 0 to 4, provided that when m is 2 or more, R.sub.2 may be the same or different; R.sub.3 is a hydrogen atom, a halogen atom, an alkyl group or an alkoxy group; W is an alkylsulfonamido group, an arylsulfonamido group, an alkylsulfamoyl group or an arylsulfamoyl group; R.sub.4 is an alkylene group; X is a divalent group; l is 0 or a positive integer; Z.sub.1 is a hydrogen atom or a group capable of leaving upon reaction with the oxidized product of an aromatic primary amine color developing agent); ##STR2## (wherein R.sub.
    Type: Grant
    Filed: April 18, 1985
    Date of Patent: September 30, 1986
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Shun Takada, Takashi Kadowaki, Kaoru Onodera
  • Patent number: 4613564
    Abstract: A silver halide photographic material having one or more silver halide emulsion layers formed on a support is disclosed, wherein at least one of said silver halide emulsion layers contains a cyan coupler of formula (I) in combination with a cyan coupler of formula (II) ##STR1## (wherein R.sub.1 is a ballast group; R.sub.2 is a halogen atom or a monovalent organic group; m is an integer of 0 to 4, provided that when m is 2 or more, R.sub.2 may be the same or different; R.sub.3 is a hydrogen atom or a halogen atom; W is a halogen atom or an alkyl group; and Z.sub.1 is a hydrogen atom or a group capable of leaving upon reaction with the oxidized product of an aromatic primary amine color developing agent); ##STR2## (wherein R.sub.4 is an alkyl or alkoxy group; n is an integer of 0 to 5, provided that when n is 2 or more, R.sub.4 may be the same or different; R.sub.5 is an alkylene group; R.sub.6 is an alkyl group; R.sub.7 is a hydrogen atom, a halogen atom or an alkyl group; and Z.sub.
    Type: Grant
    Filed: April 18, 1985
    Date of Patent: September 23, 1986
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Shun Takada, Takashi Kadowaki, Kaoru Onodera
  • Patent number: 4613565
    Abstract: A silver halide photographic material having one or more silver halide emulsion layers formed on a support is disclosed, wherein at least one of said silver halide emulsion layers contains a cyan coupler of formula (I) in combination with a cyan coupler of formula (II): ##STR1## (wherein R.sub.1 is a ballast group; R.sub.2 is a halogen atom or a monovalent organic group; R.sub.3 is a hydrogen atom, a halogen atom, an alkyl group or an alkoxy group; W is an alkyl-sulfonamido group, an arylsulfonamido group, an alkylsulfamoyl group or an arylsulfamoyl group; m is an integer of 0 to 4, provided that when m is 2 or more, R.sub.2 may be the same or different; and Z.sub.1 is a hydrogen atom or a group capable of leaving upon reaction with the oxidized product of an aromatic primary amine color developing agent); ##STR2## (wherein R.sub.4 is an alkyl or alkoxy group; n is an integer of 0 to 5, provided that when n is 2 or more, R.sub.4 may be the same or different; R.sub.5 is an alkylene group; R.sub.
    Type: Grant
    Filed: April 18, 1985
    Date of Patent: September 23, 1986
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Shun Takada, Takashi Kadowaki, Kaoru Onodera
  • Patent number: 4600688
    Abstract: A silver halide color photographic light-sensitive material whose magenta dye-forming layer forms a magenta dye image having an absorption maximum from 550 nm to 560 nm and an advantageous absorption spectrum for color reproduction is provided by a silver halide color photographic light-sensitive material comprising a support having thereon at least one silver halide emulsion layer, wherein the at least one silver halide emulsion layer contains a 1H-pyrazolo[3,2-C]-s-triazole-type magenta coupler, and the above silver halide emulsion layer containing the magenta coupler and/or a silver halide emulsion layer having substantially the same color sensitivity as does the above silver halide emulsion layer containing the magenta coupler contains a pyrazolone-type magenta coupler.
    Type: Grant
    Filed: February 8, 1985
    Date of Patent: July 15, 1986
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Satoshi Kawakatsu, Noritaka Nakayama, Katsunori Katoh, Kaoru Shinozaki, Toshihiko Kimura
  • Patent number: 4594314
    Abstract: A silver halide color photographic light-sensitive material comprising a support having thereon a lower-speed emulsion containing a phenol cyan coupler and a higher-speed emulsion containing a naphthol cyan coupler. Both the lower-speed emulsion and the higher-speed emulsion have the same color sensitivity.
    Type: Grant
    Filed: July 5, 1985
    Date of Patent: June 10, 1986
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Toshihiko Kimura, Takashi Sasaki, Yutaka Kaneko
  • Patent number: 4567135
    Abstract: A silver halide color photographic light-sensitive material is disclosed. The material is comprised of a support base having thereon a silver halide emulsion layer and two distinct types of couplers. One coupler is a diffusing dye-forming coupler which can form a dye capable of having moderate diffusibility in an emulsion layer through coupling with an oxidation product of a color developing agent. The other coupler is a high reaction rate coupler which can form a dye of the same color as that of the diffusing dye-forming coupler and that, has a coupling speed higher than that of the diffusing dye-forming coupler by a factor of 1.3 to 15. By utilizing the two types of couplers in combination with each other the resulting material can provide images with improved graininess over the entire density region of the dye image.
    Type: Grant
    Filed: January 19, 1984
    Date of Patent: January 28, 1986
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Jun Arakawa, Toshiyuki Watanabe
  • Patent number: 4552836
    Abstract: A silver halide color photographic light-sensitive material which has superior fastness to both heat and light, exhibits absorption desirable from the viewpoint of color reproduction, and has superior color forming property is disclosed which comprises a support having thereon a cyan dye forming coupler represented by the following general formula (I) and a cyan dye forming coupler represented by the following general formula (II): ##STR1## wherein R.sup.1 and R.sup.4 each represents a substituted or unsubstituted alkyl, aryl or heterocyclic group, R.sup.2, R.sup.3 and R.sup.5 each represents a hydrogen atom, a halogen atom, or a substituted or unsubstituted alkyl or aryl group, R.sup.6 represents a group with which a benzene ring can be substituted, X.sup.1 and X.sup.2 each represents a group which can be released upon an oxidative coupling reaction with a developing agent, R.sup.4 and R.sup.5 may combine together to form a 5-membered or 6-membered ring, and n represents an integer of 1 to 5.
    Type: Grant
    Filed: April 19, 1984
    Date of Patent: November 12, 1985
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Osami Tanabe, Kozo Aoki, Akira Ogawa, Makoto Umemoto
  • Patent number: 4537857
    Abstract: A silver halide light-sensitive material having a support and at least one silver halide emulsion is provided. The silver halide emulsion layer contains in combination at least one cyan coupler of Formula (I) and at least one cyan coupler of Formula (II).
    Type: Grant
    Filed: November 29, 1983
    Date of Patent: August 27, 1985
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Shun Takada, Kaoru Onodera, Takashi Kadowaki
  • Patent number: 4517283
    Abstract: A color-photographic recording material which, in at least one light-sensitive silver halide emulsion layer, an interlayer and/or a protective layer, contains a stabilizer mixture comprising(i) a compound with at least one group of the formula ##STR1## or a polymer with recurring structural units of the formula I, and (ii) a phenolic antioxidant.Color images obtained by imagewise exposure and development of this color-photographic recording material show good stability to the action of visible and ultraviolet light.With respect to the definitions of the substituents in formula I, reference is made to the description.
    Type: Grant
    Filed: December 15, 1983
    Date of Patent: May 14, 1985
    Assignee: Ciba-Geigy AG
    Inventors: David G. Leppard, Jean Rody
  • Patent number: 4507386
    Abstract: A silver halide photographic emulsion containing a coupler for photography, comprising silver halide particles in said emulsion consisting essentially of 2 mole % or less of silver iodide, 50 to 97 mole % of silver bromide and 1 to 50 mole % of silver chloride, and said particles are core/shell type silver halide particles containing a higher content of said 50 to 97 mole % silver bromide in the surface layers of said particles than in the inner portions thereof, the surface layer of said particles containing 70 to 100 mole % of silver bromide and the inner portion containing 40 to 70 mole % of silver bromide.
    Type: Grant
    Filed: September 7, 1983
    Date of Patent: March 26, 1985
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Syoji Matsuzaka, Makoto Kajiwara, Masanobu Miyoshi, Kiyoshi Yamashita
  • Patent number: 4489155
    Abstract: In a silver halide color photographic material is disclosed. The material is comprised of a blue-sensitive silver halide emulsion layer, a green-sensitive silver halide emulsion layer, and a red-sensitive silver halide emulsion layer. The granularity of the material is improved by incorporating a non-diffusible coupler capable of forming a properly smearing diffusible dye by causing a reaction with the oxidation product of a color developing agent and a colorless competing compound capable of capturing the oxidation product of a color developing agent in at least one of the foregoing silver halide emulsion layers.
    Type: Grant
    Filed: July 5, 1983
    Date of Patent: December 18, 1984
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Kei Sakanoue, Shigeo Hirano, Keiichi Adachi
  • Patent number: 4480028
    Abstract: Silver halide photographic material having at least one light sensitive silver halide emulsion layer, at least one non-light sensitive hydrophilic colloidal layer, and optionally a third type of layer, wherein at least one of said emulsion layers, colloid layers, or third type of layers has, in a single layer, both a magenta coupler of Formula I and a development inhibitor releasing compound having a development inhibitor radical of Formula II or III, said Formula is wherein R.sub.1 is selected from benzamido, anilino, and phenylureido, each having a sulfonamido group and R.sub.2 is selected from aryl and heterocyclic groups; said Formula II is ##STR1## wherein R.sub.3 is selected from hydrogen, halogen, acylamino, alkyl, benzothiazolinylidenamino and phenyl substituted alkoxy; said Formula III is ##STR2## wherein X is a group of non-metallic atoms necessary to complete, together with the C.dbd.N group, a five or six membered heterocyclic ring.
    Type: Grant
    Filed: January 28, 1983
    Date of Patent: October 30, 1984
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Kazuo Kato, Yoshikazu Watanabe, Kenji Kumashiro, Satoru Shimba
  • Patent number: 4458012
    Abstract: Disclosed is a light-sensitive silver halide color photographic material having at least one light-sensitive silver halide emulsion layer on a support, characterized in that said light-sensitive silver halide emulsion layer contains a cyan coupler represented by formula [I] shown below, and said light-sensitive silver halide emulsion layer and/or a layer contiguous to said light-sensitive silver halide emulsion layer contains a colored cyan coupler represented by the formula [II]: ##STR1## wherein X, R.sub.1 and R.sub.2 are as defined in the specification; ##STR2## wherein (Coup--).sub.c, L, Q.sub.1, Q.sub.2, M, j, and G are as defined in the specification.
    Type: Grant
    Filed: February 22, 1983
    Date of Patent: July 3, 1984
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Kenji Ito, Satoru Shimba, Yasuo Tsuda, Hiroshi Sugita
  • Patent number: 4427767
    Abstract: A silver halide color photographic sensitive material is disclosed. The material is comprised of a substrate having a silver halide emulsion layer position thereon and a cyan dye forming coupler. The coupler is reresented by the general formula (I): ##STR1## wherein R represents a substituted or nonsubstituted alkyl group, aryl group or heterocyclic group, X represents a group capable of releasing by an oxidative coupling reaction with a developing agent, and R.sup.1 represents a substituted or nonsubstituted alkyl group or aryl group. The coupler of the invention can be easily dissolved in a high boiling point organic solvent and makes possible production of a light sensitive material having a high dye forming rate, high maximum color density and good fastness to light. Furthermore, the couplers prevent a large decrease in density when the bleaching solution utilized has a weak oxidation ability.
    Type: Grant
    Filed: December 6, 1982
    Date of Patent: January 24, 1984
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Kozo Aoki, Yoshio Seoka
  • Patent number: 4420556
    Abstract: Granularity of silver halide photographic materials is reduced by employing a coupler which yields a dye of such mobility that controlled image smearing occurs.
    Type: Grant
    Filed: September 10, 1981
    Date of Patent: December 13, 1983
    Assignee: Eastman Kodak Company
    Inventors: Robert E. Booms, Colin Holstead
  • Patent number: 4418142
    Abstract: The light-sensitive color photographic silver halide recording material contains in at least one of its light-sensitive gelatine-containing layer, color formers for the formation of the image dyes in the three primary colors, a crosslinking agent activating the carboxyl groups of gelatine selected from carbamoylonium salts, carbamoylpyridinium salts and carbamoyloxypyridinium salts and a compound acting as aldehyde-scavenger which corresponds to the general formula ##STR1## wherein Z represents the atoms required for completing a 5-6-membered substituted or unsubstituted carbocyclic ring or a substituted or unsubstituted heterocyclic ring which may contain oxygen, nitrogen or sulfur as hetero-atom.
    Type: Grant
    Filed: October 2, 1981
    Date of Patent: November 29, 1983
    Assignee: Agfa Gevaert Aktiengesellschaft
    Inventors: Hans Langen, Erich Wolff, Erwin Ranz
  • Patent number: 4409323
    Abstract: A silver halide photographic material containing a coupler capable of releasing a photographically useful group in a controllable timing.
    Type: Grant
    Filed: February 13, 1981
    Date of Patent: October 11, 1983
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Ryosuke Sato, Yuji Hotta, Katsumi Matsuura
  • Patent number: 4387159
    Abstract: A light-sensitive, color photographic silver halide multilayer material contains for the improvement of definition, grain and color rendition DIR-couplers which are substituted in coupling position by mercapto-azole-, mercaptobenz-azole- or mercapto-azine moieties, which themselves carry hydrophilic substituents. The DIR-couplers according to the invention may be used together with other couplers and additives or as sole color forming element and are noteworthy for their high color yields, inter- and intra-image effects. They may be added as well in hydrophobic state (in dispersed form) as in hydrophilic state (as alkaline solutions) and they may be used in single layers or as associated layers with a maximum three layers of a color forming unit and the layers may be arranged in any desired order within the whole combination of layers.
    Type: Grant
    Filed: May 8, 1981
    Date of Patent: June 7, 1983
    Assignee: VEB Filmfabrik Wolfen
    Inventors: Horst Engelmann, Rainer Redmann, Monika Bethke, Christa Melz, Gerd West, Jurgen Mistol, Udo Sydow
  • Patent number: 4368259
    Abstract: Hydrophilic color-forming compounds such as couplers and color-providing compounds for the dye diffusion transfer process may be emulsified with the aid of oil formers when they are in admixture with aliphatic tertiary hydroxy amino compounds as specified hereinafter.
    Type: Grant
    Filed: January 15, 1981
    Date of Patent: January 11, 1983
    Assignee: Agfa-Gevaert Aktiengesellschaft
    Inventors: Fritz Nittel, Hans Langen, Erwin Ranz
  • Patent number: 4368255
    Abstract: A method of processing monochrome silver halide material which contains in at least one silver halide layer in addition to the normal image-forming color coupler or couplers a development inhibitor releasing compound which method comprises developing the exposed material in a color developing solution which comprises not more than 2.5 g/liter of a paraphenylene diamine color developing agent which is able to couple with the color coupler or couplers and D.I.R. compound present, the process further comprising silver halide fixing, silver image bleaching and washing steps. The developed photographic images exhibit a remarkable increase in sharpness.
    Type: Grant
    Filed: July 15, 1981
    Date of Patent: January 11, 1983
    Assignee: Ciba-Geigy AG
    Inventor: Thomas G. Borg
  • Patent number: 4367282
    Abstract: A silver halide color photographic light-sensitive material is described comprising a support having thereon a silver halide emulsion layer containing a 2-equivalent magenta color image forming polymer coupler latex which is capable of forming a dye upon coupling with an oxidation product of an aromatic primary amine developing agent and which is a polymer or copolymer having a repeating unit derived from a monomer represented by formula (I) ##STR1## wherein R represents a hydrogen atom, a lower alkyl group containing from 1 to 4 carbon atoms or a chlorine atom; X represents --CONH--, --NH--, --NHCONH-- or --NHCOO--; Y represents --CONH-- or --COO--; A represents an unsubstituted or substituted alkylene group which may be a straight chain or a branched chain or an unsubstituted or substituted phenylene group; Ar represents an unsubstituted or substituted phenyl group; Za, Zb, Zc and Zd can each represent a methine group, a substituted methine group or -N.dbd.; m represents 0 or 1; and n represents 0 or 1.
    Type: Grant
    Filed: December 7, 1981
    Date of Patent: January 4, 1983
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Morio Yagihara, Tsumoru Hirano, Keiji Mihayashi
  • Patent number: 4348474
    Abstract: A photographic recording material having at least 2 panchromatically sensitized silver-halide emulsion layers differing in speed, a DIR-compound and at least 2 yellow couplers of differing coupling velocity provides an improved graininess.
    Type: Grant
    Filed: July 23, 1981
    Date of Patent: September 7, 1982
    Assignee: Agfa-Gevaert Aktiengesellschaft
    Inventors: Rainer Scheerer, Erwin Ranz, Joachim W. Lohmann
  • Patent number: 4315069
    Abstract: Color photographic material is described in which a yellowish image is formed which can be used to print black and white prints. Also present in the layer is a small amount of a more reactive coupler which produces a colored image to which black and white paper is not sensitive. This more reactive coupler reduces the fog in the highlight areas.Most preferably small amounts of other couplers are present which result in a green or brown image which makes it easier for the operator to focus the image.
    Type: Grant
    Filed: September 11, 1980
    Date of Patent: February 9, 1982
    Assignee: Ciba Geigy AG
    Inventors: John G. V. Scott, Anthony K. Harvey
  • Patent number: 4297438
    Abstract: Color images are obtained by chromogenic development of a colorphotographic material comprising several differently spectrally sensitized silver halide emulsions and color couplers associated thereto, a hydrophobic cyan coupler being incorporated by means of a hydrophobic coupler solvent and a hydrophobic yellow coupler being incorporated without a coupler solvent, when a color developing composition is used comprising a hydrophilic and a hydrophobic color developer compound. The color images have good stability of the cyan partial image to tropical conditions and good lightfastness of the yellow partial image.
    Type: Grant
    Filed: July 27, 1979
    Date of Patent: October 27, 1981
    Assignee: AGFA-Gevaert Aktiengesellschaft
    Inventors: Helmut Haseler, Heinz Meckl, Karl Lohmer, Willibald Pelz
  • Patent number: 4294900
    Abstract: A process for producing a multicolor optical filter by exposing a multilayer color photographic material comprising:(1) a silver halide emulsion layer containing a colored coupler (1b) which has one of cyan, magenta or yellow colors and which forms a dye of one of the other two colors than the color of the colored coupler by a coupling reaction with the oxidation product of an aromatic primary amine color developing agent, and(2) a silver halide emulsion layer containing (i) a silver halide emulsion having a sufficiently high sensitivity that it can be exposed without exposing emulsion layer (1) and without increasing the color density in emulsion layer (1) and (ii) a colored coupler (2b) which has the same color as that of the dye formed by the coupling reaction of the colored coupler (1b) and which forms a cyan, magenta or yellow dye but not the color of the colored coupler (1b) or the color of the dye formed by the coupling reaction of the colored coupler (1b); the exposure is through a stripe or mosaic fi
    Type: Grant
    Filed: February 22, 1980
    Date of Patent: October 13, 1981
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Toshiaki Aono
  • Patent number: 4277559
    Abstract: Photographic color elements are described wherein one of the emulsion layers comprise a 4-phenylazo-2-pyrazolin-5-one coupler, the phenylazo group of which carries a p-alkoxy group of the formula:--O--Alk--X--Rwherein:Alk represents a straight-chain or branched-chain alkylene group, which may carry an aryl substituent,X represents a linking group, andR represents an aryl group.
    Type: Grant
    Filed: February 14, 1977
    Date of Patent: July 7, 1981
    Assignee: AGFA-Gevaert N.V.
    Inventors: Jan Jaeken, Andre Verhecken
  • Patent number: 4273861
    Abstract: A multilayer color photographic material with improved color reproduction comprising a support having thereon at least two photosensitive silver halide emulsion layers which provide color images having different colors from each other, the multilayer color photographic material containing at least one interlayer color correction coupler as defined hereinafter.
    Type: Grant
    Filed: February 23, 1976
    Date of Patent: June 16, 1981
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Keisuke Shiba, Takeshi Hirose, Jun Hayashi, Atsuaki Arai, Nobuo Furutachi, Harumi Katsuyama
  • Patent number: 4264720
    Abstract: A silver halide color photographic light-sensitive material which contains a 3-anilino-5-pyrazolone type of magenta coupler and a novel dye image-stabilizing agent of the general formula (I) as hereinafter defined.
    Type: Grant
    Filed: December 28, 1979
    Date of Patent: April 28, 1981
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Tsutomu Hamaoka, Masakazu Morigaki, Satoru Sawada, Nobutaka Ohki, Kotaro Nakamura
  • Patent number: 4221860
    Abstract: A process for forming color photographic images having improved granularity, sharpness, and gradation by applying, after image exposure, a color reversal process including a step of performing color development in the presence of a competing coupler. The element processed is a multilayer reversal color photographic material comprising a support having coated thereon at least three differently sensitive photographic silver halide emulsion layers, the outermost layer of the color photographic material being blue-sensitive and containing a nondiffusible coupler forming a yellow dye by a coupling reaction with an oxidized primary aromatic amino color developing agent and represented by the following general formula (I) ##STR1## wherein R.sub.1 represents an alkyl group or an aryl group; R.sub.
    Type: Grant
    Filed: May 20, 1977
    Date of Patent: September 9, 1980
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Takeshi Hirose, Akia Okumura