Substituted At Coupling Position With Other Than Hydrogen Patents (Class 430/553)
  • Patent number: 4390618
    Abstract: A silver halide photographic light-sensitive material is described comprising a layer containing a coupler compound represented by formula (I)A--B (I)wherein A represents a residue of a compound capable of undergoing a coupling reaction with an oxidation product of an aromatic primary amine developing agent, by the removal of one hydrogen atom from the active position of said compound, and B represents a group which is released by the coupling reaction and exhibits a development accelerating function.
    Type: Grant
    Filed: March 15, 1982
    Date of Patent: June 28, 1983
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Hidetoshi Kobayashi, Toshirou Takahashi, Shigeo Hirano, Takeshi Hirosa, Keiichi Adachi
  • Patent number: 4387158
    Abstract: Photographic silver halide material which comprises at least one silver halide emulsion layer coated on a support, there being present in the silver halide emulsion layer(s), or in a layer in operative contact with at least one silver halide emulsion layer, a compound of the formula ##STR1## wherein W is hydrogen, alkyl, --NHCOR.sup.1 or --COR.sup.1, wherein R.sup.1 is alkyl or alkenyl, cycloalkyl, aralkyl, aryl, phenoxymethylamino or halogen; X is a substituent in the coupling position and is a leaving group selected from hydrogen, chlorine, bromine, --SR.sup.11 wherein R.sup.11 is alkyl, aryl or a heterocyclic group, or X is a nitrogen-containing heterocyclic residue attached at a ring nitrogen atom; Y is a group having the formula ##STR2## wherein Q is selected from the residues: (a) --COOR.sup.4 or --CONR.sup.4 R.sup.5 where R.sup.4 is hydrogen, alkyl optionally interrupted by 1 or more oxygen atoms, alkenyl, cycloalkyl, aralkyl or aryl, and R.sup.5 is hydrogen or alkyl or R.sup.4 and R.sup.
    Type: Grant
    Filed: June 18, 1982
    Date of Patent: June 7, 1983
    Assignee: Ciba-Geigy AG
    Inventor: Stephen R. Postle
  • 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: 4368257
    Abstract: A method of forming a cyan dye image by development of an exposed silver halide photographic material with a developer containing a cyan coupler having one of the following formulae: ##STR1## wherein R.sub.1 is a hydrogen atom or alkyl having 1 to 20 carbon atoms; R.sub.2 is alkyl, aryl, or a hetero ring; R.sub.3 is hydrogen or halogen; X is arylene or alkylene; Z is a coupling off group; n is 1 or 2; ##STR2## wherein Cy, Cy' and Cy" are individually a cyclic aliphatic, aromatic or heterocyclic group; R, R' and R" are individually alkyl; A is hydrogen or a monovalent organic group, Y is a divalent organic group, K, l, m, m' m" are individually 0 or 1, provided that when m=0, Cy is a cyclic aliphatic or heterocyclic group.
    Type: Grant
    Filed: January 14, 1981
    Date of Patent: January 11, 1983
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Yasushi Usagawa, Wataru Fujimatsu, Osamu Sasaki, Katsumi Matsuura
  • Patent number: 4362795
    Abstract: A process for forming photographic images comprising a silver image and a dye image, comprising development processing an imagewise exposed silver halide photographic light-sensitive material containing a 4-alkoxy-1-naphthol represented by the formula (I) ##STR1## wherein R represents an alkyl group, an alkoxyalkyl group, or a hydroxyalkyl group, and the number of carbon atoms in the substituent represented by R is from 1 to 4.The process of this invention is particularly useful in the field of X-ray photography, in order to provide an image of increased density for a given silver content. A novel silver halide photographic light-sensitive material includes the above 4-alkoxy-1-naphthol in a photographic colloid layer thereof, preferably the silver halide emulsion layer.
    Type: Grant
    Filed: August 29, 1980
    Date of Patent: December 7, 1982
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Junkichi Ogawa, Minoru Yamada, Tsutomu Hamaoka
  • Patent number: 4362810
    Abstract: A method of forming a cyan dye image by development of an exposed silver halide photographic material with a developer containing a 2,5-diacylaminophenol cyan coupler containing a substituted alkylsulfonylamino terminal moiety or a substituted alkylaminosulfonyl terminal moiety in the 2- or 5- position.
    Type: Grant
    Filed: January 9, 1981
    Date of Patent: December 7, 1982
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Yasushi Usagawa, Wataru Fujimatsu, Osamu Sasaki, Katsumi Matsuura
  • Patent number: 4355100
    Abstract: A color photographic material having a light-sensitive silver halide emulsion layer containing a DIR compound having an amino group and a DIR compound having no amino group.
    Type: Grant
    Filed: January 19, 1981
    Date of Patent: October 19, 1982
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Hiroshi Sugita, Shizuo Saito, Ryosuke Sato, Kiyoshi Yamashita
  • Patent number: 4345025
    Abstract: A color photographic silver halide light-sensitive material containing a colorless photographic cyan color-forming coupler having, in a position for coupling with the oxidation product of an aromatic primary amine developing agent, a coupling-off group represented by the following general formula (I):--O--R--SO--R.sub.1 (I)wherein R represents a substituted straight or branched chain alkylene group or a substituted straight or branched chain alkenylene group; R.sub.1 represents a substituted or unsubstituted straight or branched chain alkyl group, a straight or branched chain alkenyl group, a straight or branched chain aralkyl group, a straight or branched chain aralkenyl group, a cycloalkyl group, an aryl group or a heterocyclic group, and R and R.sub.1 may be bonded to each other directly or through a connecting group to form a ring. The 2-equivalent photographic cyan couplers have high coupling speed and excellent dispersibility.
    Type: Grant
    Filed: March 11, 1981
    Date of Patent: August 17, 1982
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Morio Yagihara, Yukio Yokota
  • Patent number: 4342825
    Abstract: Cyan-forming phenol type color couplers comprising in the 2-position of the phenol a benzamido group carrying on the benzene nucleus of the benzamido group at least one --Q--Rf group wherein Q is --O--, --S--, or --SO.sub.2 --, and Rf is a short-chain fluorine-containing group derived from hexafluoropropylene or trifluorochloroethylene.These cyan-forming color couplers can be incorporated in (a) red-sensitized silver halide emulsion layer(s) of a photographic multilayer color element or in a non-light-sensitive colloid layer in water-permeable relationship with the red-sensitized emulsion layer(s).
    Type: Grant
    Filed: March 25, 1981
    Date of Patent: August 3, 1982
    Assignee: AGFA-GEVAERT N.V.
    Inventors: Raphael K. Van Poucke, Marcel J. Monbaliu, Jan J. Vandewalle
  • Patent number: 4341864
    Abstract: Cyan-forming color couplers according to the formula: ##STR1## wherein Z is hydrogen in the case of 4-equivalent couplers or a substituent that splits off upon color development, thus conferring a 2-equivalent character to the color coupler, and Y is a ballasting group. These cyan-forming color couplers can be incorporated in (a) red-sensitized silver halide emulsion layer(s) of a photographic multilayer color element or in a non-light-sensitive colloid layer in water-permeable relationship with the red-sensitized emulsion layer(s).
    Type: Grant
    Filed: March 12, 1981
    Date of Patent: July 27, 1982
    Assignee: Agfa-Gevaert, N.V.
    Inventors: Jan J. Vandewalle, Marcel J. Monbaliu, Raphael K. Van Poucke
  • Patent number: 4334011
    Abstract: Color photographic light sensitive materials are disclosed, comprising a cyan dye forming coupler represented by formula (I) ##STR1## wherein A represents a cyan coupler residue, but the --NHCO group does not bond to A in the active position of A, R.sup.1 represents a substituted or unsubstituted alkyl group or a substituted or unsubstituted aryl group, R.sup.2 represents hydrogen or a substituted or unsubstituted alkyl group, and the various positions of the phenyl group of the formula (I) may be substituted with from 1 to 3 substituents selected from the group consisting of hydrogen, a halogen atom, an alkyl group or an alkoxy group.
    Type: Grant
    Filed: December 5, 1980
    Date of Patent: June 8, 1982
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Kozo Aoki, Yoshio Seoka, Yukio Yokota
  • Patent number: 4333999
    Abstract: Novel phenolic cyan dye-forming couplers contain in the 2-position a p-cyanophenylureido group. These couplers are useful in photographic emulsions, elements and processes.
    Type: Grant
    Filed: July 10, 1980
    Date of Patent: June 8, 1982
    Assignee: Eastman Kodak Company
    Inventor: Philip T. S. Lau
  • Patent number: 4327173
    Abstract: A color photographic light-sensitive material is described containing a cyan dye forming coupler represented by formula (I) ##STR1## wherein R.sup.1 represents a substituted or unsubstituted alkyl group or a substituted or unsubstituted aryl group; R.sup.2 and R.sup.3 each represents hydrogen, a halogen atom, an alkyl group, an aryl group, an alkoxy group, an alkoxycarbonyl group, an alkylcarbonyl group, an arylcarbonyl group, an alkylcarbamoyl group, an arylcarbamoyl group wherein said groups may be substituted or unsubstituted, or a nitryl group; and X represents hydrogen or a coupling-off group; also a double bond may be formed between the carbon atom at the 3-position and the carbon atoms at the 4-position.The color photographic light-sensitive material provides color images having excellent fastness to light and heat.
    Type: Grant
    Filed: January 23, 1981
    Date of Patent: April 27, 1982
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Kozo Aoki, Yoshio Seoka, Yukio Yokota
  • 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: 4310618
    Abstract: Novel dye-forming couplers have the structure: ##STR1## wherein: Z represents the atoms to complete, with the attached oxygen atom, the same or different 5-pyrazolone dye-forming coupler moiety, phenol dye-forming coupler moiety or naphthol dye-forming coupler moiety, the * in the ring completed by Z representing the coupling position;R is hydrogen or a coupling-off group;Bl is a blocking group removable, during development, from the coupler moiety completed by Z to which it is directly attached; andn is an integer of 2 to 4.
    Type: Grant
    Filed: May 30, 1980
    Date of Patent: January 12, 1982
    Assignee: Eastman Kodak Company
    Inventors: Jose M. Fernandez, Joseph P. Pepe
  • Patent number: 4304844
    Abstract: A method for forming a cyan dye image by developing an exposed silver halide photographic material with a developer containing a color developing agent in the presence of a cyan coupler, wherein the coupler is a 2,5-diacylaminophenol in which each acylamino group has a substituent containing an oxycarbonyl, sulfonyloxy, oxysulfonyl, arylsulfonamide or arylsulfamoyl group or other organic group containing a sulfone group.
    Type: Grant
    Filed: May 1, 1980
    Date of Patent: December 8, 1981
    Inventors: Wataru Fujimatsu, Yasushi Usagawa, Osamu Sasaki, Katsumi Matsuura
  • Patent number: 4299914
    Abstract: A method for forming a cyan dye image by development of an exposed silver halide photographic material with a developer containing a cyan coupler of the following formula: ##STR1## in which R represents hydrogen atom or an alkyl group having a carbon number of one to twenty; R.sub.1 represents an alkylsulfonamide or alkylsulfamoyl group; R.sub.2 represents an alkyl, aryl group or a 5 or 6-membered heterocyclic group containing a nitrogen, oxygen or sulfur atom; R.sub.3 represents a hydrogen or halogen atom; X represents an alkylene, metaphenylene or orthophenylene group; Z represents a hydrogen atom or a split-off radical; and n has an integral value of one or two.
    Type: Grant
    Filed: May 1, 1980
    Date of Patent: November 10, 1981
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Wataru Fujimatsu, Yasushi Usagawa, Osamu Sasaki, Katsumi Matsuura
  • Patent number: 4296200
    Abstract: A silver halide photographic light-sensitive material containing a colorless photographic cyan color forming coupler having, in a position for coupling with an oxidation product of an aromatic primary amine developing agent, a coupling-off group represented by the formula (I):--O--R--S--R.sub.1 (I)wherein R represents a substituted alkylene group or an unsubstituted or substituted alkenylene group, and said alkylene group or alkenylene group may be straight or branched chain; and R.sub.1 represents a substituted or unsubstituted alkyl group, an alkenyl group, an aralkyl group, an aralkenyl group, a cycloalkyl group or a heterocyclic group and said alkyl group, alkenyl group, aralkyl group and aralkenyl group may be straight or branched chain; and said heterocyclic group being connected with a thio group at the position of a carbon atom of the heterocyclic group.
    Type: Grant
    Filed: August 12, 1980
    Date of Patent: October 20, 1981
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Morio Yagihara, Yukio Yokota
  • Patent number: 4296199
    Abstract: A silver halide photographic light-sensitive material is described containing a colorless photographic cyan color-forming coupler having, in a position for coupling with an oxidation product of an aromatic primary amine developing agent, a coupling-off group represented by the formula (I)--O--(R.sub.1 S).sub.x (R.sub.2 S).sub.y R.sub.3 (I)wherein R.sub.1 and R.sub.2 each represents an alkylene group; R.sub.3 represents an alkyl group, a cycloalkyl group, an aryl group, or a heterocyclic group; x represents a positive integer; and y represents 0 or a positive integer.The photographic cyan color-forming coupler exhibits excellent dispersibility and color-forming properties.
    Type: Grant
    Filed: June 19, 1980
    Date of Patent: October 20, 1981
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Morio Yagihara, Yukio Yokota
  • Patent number: 4294918
    Abstract: A color photographic silver halide light-sensitive material is described containing a colorless photographic cyan color-forming coupler having, in a position for coupling with the oxidation product of an aromatic primary amine developing agent, as a coupling-off group, at least one alkoxy group substituted with a sulfinyl group represented by the formula (I)-O-R-SO-R.sub.1 (I)wherein R represents a saturated or unsaturated, divalent aliphatic group which may be straight or branched chain and may be substituted; and R.sub.1 represents a substituted or unsubstituted straight or branched chain alkyl group, an alkenyl group, an aralkyl group, an aralkenyl group, a cycloalkyl group, an aryl group or a heterocyclic group; and said heterocyclic group being connected with a sulfinyl group on the position of a carbon atom of the heterocyclic group.
    Type: Grant
    Filed: July 14, 1980
    Date of Patent: October 13, 1981
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Morio Yagihara, Yukio Yokota
  • Patent number: 4288532
    Abstract: A silver halide color photographic light-sensitive material comprising a support having thereon at least one silver halide emulsion layer, said photographic light-sensitive material containing at least one cyan color-forming coupler represented by the following general formula (I): ##STR1## wherein l represents 0, 1 or 2; X represents a group capable of being released upon the coupling reaction and having at least 6 carbon atoms; Y represents RCONH--, RNHCO-- or RNHCONH-- wherein R represents a hydrogen atom, a methyl group, an ethyl group or a methyl group substituted with one or more halogen atoms; n represents 1 or 2 and Y may be the same or different when n is 2; and the phenyl group can be substituted with a halogen atom, an alkyl group having 1 to 3 carbon atoms or an alkoxy group having 1 to 3 carbon atoms. The dyes formed from the cyan color-forming couplers have unusually good spectral absorption properties and exceptional fastness to light and heat.
    Type: Grant
    Filed: February 13, 1980
    Date of Patent: September 8, 1981
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Yoshio Seoka, Kozo Aoki, Yukio Yokota, Seiiti Kubodera
  • Patent number: 4286054
    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 29, 1980
    Date of Patent: August 25, 1981
    Assignee: VEB Filmfabrik Wolfen
    Inventors: Horst Englemann, Rainer Redmann, Monika Bethke, Christa Melz, Gerd West, Jurgen Mistol, Udo Sydow
  • 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: 4268616
    Abstract: A process for forming photographic images comprising a silver image and a dye image, which comprises development processing an imagewise exposed silver halide photographic light-sensitive material in the presence of a carboxy- and sulfo-free naphthalene compound wherein at least two hydrogen atoms in the naphthalene nucleus are substituted at specific positions thereof as indicated in formula (I) below, and a 3-pyrazolidone compound.
    Type: Grant
    Filed: January 18, 1980
    Date of Patent: May 19, 1981
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Junkichi Ogawa, Tsutomu Hamanka
  • Patent number: 4264722
    Abstract: A silver halide photographic light-sensitive material containing a colorless photographic cyan color-forming coupler having, in a position for coupling with an oxidation product of an aromatic primary amine developing agent, an eliminatable group represented by the following formula (I):--O--(R.sub.1 O).sub.x (R.sub.2 O).sub.y R.sub.3 (I)wherein R.sub.1 and R.sub.2 each represents a substituted or unsubstituted alkylene group which may be branched provided that R.sub.1 is not substituted with an aryl group at the carbon atom adjacent to the oxygen atom bonded to the coupling position, R.sub.3 represents a hydrogen atom, a substituted or unsubstituted alkyl group, a cycloalkyl group, an aryl group, or a cyan coupler residue, x represents a positive integer, and y represents 0 or a positive integer.
    Type: Grant
    Filed: November 14, 1979
    Date of Patent: April 28, 1981
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Morio Yagihara, Yukio Yokota
  • Patent number: 4254212
    Abstract: A photographic silver halide light-sensitive emulsion containing a cyan color forming colorless coupler having at the coupling position at which the coupler reacts with the oxidation product of an aromatic primary amine developing agent at least one alkoxy group having a sulfonyl group as a substituent and represented by the following general formula (I):--O--R--SO.sub.2 --R.sub.1 (I)wherein R represents a saturated or unsaturated divalent aliphatic group having 1 to 4 carbon atoms which may be straight or branched chain and may be substituted (except those having an aryl group as a substituent on the carbon atom adjacent the oxygen atom bonded to the coupling position); and R.sub.1 represents an aliphatic group, an aromatic group or a heterocyclic group; and wherein R and R.sub.1 can combine directly or through a bonding group to form a ring and an image-forming process.
    Type: Grant
    Filed: August 29, 1979
    Date of Patent: March 3, 1981
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Morio Yagihara, Yukio Yokota, Akira Ogawa, Hiroshi Sawaguchi
  • Patent number: 4250251
    Abstract: Ballasted primary and secondary 3'-sulfamoyl-1-hydroxy-2-naphthanilide couplers are disclosed as well as compositions and photographic elements containing these couplers in coupler solvent particles. The coupler solvent particles are comprised of a combination of a coupler solvent and the coupler capable of permitting the formation of a microcrystalline dye. Surprisingly these microcrystalline dyes exhibit a broadened absorption characteristic in the 750 to 850 nm region of the spectrum. Dye images having such absorption characteristics are particularly suited to forming integral infrared absorbing sound tracks in photographic elements, such as motion picture projection films.
    Type: Grant
    Filed: July 11, 1979
    Date of Patent: February 10, 1981
    Assignee: Eastman Kodak Company
    Inventors: Harland J. Osborn, Robert G. Cameron, Edward J. Walsh
  • Patent number: 4248962
    Abstract: Photographic couplers which release a photographically useful group by an intramolecular nucleophilic displacement reaction can be used in photographic emulsions, elements and processes to provide a photographically useful group in a controlled manner.
    Type: Grant
    Filed: December 22, 1978
    Date of Patent: February 3, 1981
    Assignee: Eastman Kodak Company
    Inventor: Philip T. S. Lau
  • Patent number: 4241172
    Abstract: A silver halide color photographic material comprising a coupler represented by the following general formula: ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 individually represent a substituted or unsubstituted alkyl, alkenyl, aryl, cycloalkyl group, or,-A-X).sub.n ].sub.m Cp in which Cp represents a cyan coupler, magenta coupler or yellow coupler, A represents a substituted or unsubstituted divalent aliphatic group, X represents a divalent group, and m and n individually represent a value of 0 or 1, provided that at least one of R.sub.1, R.sub.2, R.sub.3 and R.sub.4 is -A-X).sub.n ].sub.m Cp.
    Type: Grant
    Filed: May 24, 1979
    Date of Patent: December 23, 1980
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Kenichiro Okaniwa, Takashi Uchida, Morio Kobayashi, Hiroshi Sugita, Takashi Sasaki
  • Patent number: 4239851
    Abstract: A silver halide photographic light-sensitive material and a process for preparing the same are disclosed wherein an oil-soluble photographic additive and, in particular, a cyan coupler is dissolved in an epoxy compound of the formula (I): ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 each represents an alkyl group or substituted alkyl group containing 1 to 40 carbon atoms, an alkoxycarbonyl group or substituted alkoxycarbonyl group containing 1 to 40 carbon atoms, or a hydrogen atom, provided that R.sub.1, R.sub.2, R.sub.3 and R.sub.4 do not represent hydrogen atoms at the same time and that the sum of the number of carbon atoms of R.sub.1, R.sub.2, R.sub.3 and R.sub.4 is 8 to 60, and R.sub.1, R.sub.2, R.sub.3 and R.sub.4 may be the same or different and may combine to form a ring; or in an epoxy compound formed by linking two compounds of said formula (I) which may be the same or different through any of R.sub.1 to R.sub.4 or the ring formed by R.sub.1 to R.sub.4.
    Type: Grant
    Filed: February 1, 1979
    Date of Patent: December 16, 1980
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Kozo Aoki, Yukio Yokota
  • Patent number: 4233389
    Abstract: Fluorinated 1-hydroxy-2-naphthamide couplers which are N-substituted with a lower alkylphenoxybutyl ballasting group are disclosed as well as compositions and photographic elements containing these couplers in coupler solvent particles. The coupler solvent particles are comprised of a combination of a coupler solvent and the coupler capable of permitting the formation of a microcrystalline dye. Surprisingly these microcrystalline dyes exhibit a broadened absorption characteristic in the 750 to 850 nm region of the spectrum. Dye images having such absorption characteristics are particularly suited to forming integral infrared absorbing sound tracks in photographic elements, such as motion picture projection films.
    Type: Grant
    Filed: July 23, 1979
    Date of Patent: November 11, 1980
    Assignee: Eastman Kodak Company
    Inventors: Jose M. Fernandez, Robert G. Cameron, Edward J. Walsh
  • Patent number: 4228233
    Abstract: A photographic silver halide light-sensitive emulsion containing a cyan dye forming, colorless coupler having, at the coupling position, an alkoxy group having at least one sulfonamido or sulfamoyl group as a substituent and represented by one of the following general formulae (I) and (II): ##STR1## wherein R represents a saturated or unsaturated, divalent aliphatic group (except those having an aryl group as a substituent on the carbon atom adjacent the oxygen atom bonded to the coupling position); R.sub.1, R.sub.3 and R.sub.4, which may be the same or different, each represents a hydrogen atom, an aliphatic group, or an aromatic group; and R.sub.2 represents an aliphatic group, an aromatic group or a heterocyclic group; and wherein R.sub.3 and R.sub.
    Type: Grant
    Filed: September 22, 1978
    Date of Patent: October 14, 1980
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Morio Yagihara, Yukio Yokota
  • Patent number: 4208210
    Abstract: A process for forming an optical sound track comprising applying ultraviolet light exposure to an optical sound track area of a multi-layer color photographic light-sensitive material comprising a support, color image-forming silver halide emulsion layers consisting of at least one blue-sensitive silver halide emulsion layer containing a yellow dye-forming coupler, at least one red-sensitive silver halide emulsion layer containing a cyan dye-forming coupler, and at least one green-sensitive silver halide emulsion layer containing a magenta dye-forming coupler, and at least one ultraviolet light-sensitive silver halide emulsion layer (sound track forming layer) containing a non-diffusible silver bleach inhibitor and an infrared dye-forming coupler which forms a dye having an absorption maximum at wavelengths longer than 725 nm, wherein at least one layer interposed between the ultraviolet light-sensitive silver halide emulsion layer and the support contains a non-diffusible ultraviolet absorbant.
    Type: Grant
    Filed: March 24, 1977
    Date of Patent: June 17, 1980
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Tadao Sakai, Masayoshi Kawai
  • Patent number: T101601
    Abstract: Novel phenolic cyan dye-forming couplers contain in the 2-position a p-cyanophenylureido group. These couplers are useful in photographic emulsions, elements and processes.
    Type: Grant
    Filed: July 6, 1981
    Date of Patent: March 2, 1982
    Inventor: Philip T. S. Lau