Patents Examined by Travis Brown
  • Patent number: 4558000
    Abstract: A color reversal light-sensitive material comprising a support having coated thereon at least a pair of silver halide emulsion layers having mutually different color sensitivities and consisting of an emulsion having a high silver/coupler ratio and an emulsion having a low silver/coupler ratio, the former ratio being greater by a factor of at least 5 than the latter ratio, and the latter emulsion being incorporated with a compound containing recurring units represented by the following General Formula (I): ##STR1## the substituents being defined within the specification. By including the compound of the general formula (I) within the particular emulsion layer which is highly susceptible to changes in sensitivity and maximum density, it is possible to prevent deterioration in color balance which has been found to be due to variation in the concentration of potassium bromide.
    Type: Grant
    Filed: March 16, 1984
    Date of Patent: December 10, 1985
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Hiroyuki Yamagami, Yasuhiro Hayashi, Naoyasu Deguchi, Kiyoshi Imai
  • Patent number: 4556633
    Abstract: Silver halide color light-sensitive materials which contain a compound having a repeating unit represented by general formula (I) and a compound represented by general formula (II): ##STR1## wherein R.sub.1 represents --OR, --SR or wherein R and R' each represents a hydrogen atom, or alkyl group, a hydroxyalkyl group, a sulfoalkyl group (or a salt thereof), a carboxyalkyl group (for a salt thereof), an aralkyl group, an aryl group, or a cycloalkyl group, or R and R' may form an alkylene group or an --O-- containing alkylene ring together; R.sub.2, R.sub.3, R.sub.4 and R.sub.5 each represents a hydrogen atom or an alkyl group; Y.sub.1, Y.sub.2, Y.sub.3 and Y.sub.4 each represents a polymethylene group, an arylene group, or a cycloalkylene group, Z represents --O--, --SO.sub.2 -- or --CH.sub.2 --; and l and m each represents 0 or 1; ##STR2## wherein R.sub.6 represents a hydrogen atom, an alkyl group; R.sub.7 and R.sub.
    Type: Grant
    Filed: February 19, 1985
    Date of Patent: December 3, 1985
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Hatsumi Tanemura, Toshinao Ukai, Masaki Okazaki, Naoyasu Deguchi, Munehisa Fujita, Kiyohiko Yamamuro
  • Patent number: 4556630
    Abstract: A silver halide color photographic light-sensitive material comprising a support having coated thereon at least one silver halide emulsion layer, the color photographic light-sensitive material having a photographic layer containing at least one magenta coupler represented by the following general formula (I) or (II): ##STR1##
    Type: Grant
    Filed: June 20, 1984
    Date of Patent: December 3, 1985
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Nobuo Furutachi, Kotaro Nakamura, Takeshi Hirose
  • Patent number: 4555479
    Abstract: A silver halide color photographic light-sensitive material comprising a support having coated thereon at least one silver halide emulsion layer, the color photographic light-sensitive material having at least one layer containing at least one 2-equivalent magenta coupler of the 5-pyrazolone type represented by the following general formula (I): ##STR1## wherein W represents a phenyl group substituted with at least one substituent selected from the group consisting of a halogen atom, an alkyl group, an alkoxy group, an alkoxycarbonyl group and a cyano group; Y represents an acylamino group or an anilino group; and Z represents a group capable of being released upon coupling, and at least one compound represented by the following general formula (II): ##STR2## wherein R.sup.1 and R.sup.2, which may be the same or different, each represents a hydrogen atom, an alkyl group or an aryl group, provided that both R.sup.1 and R.sup.2 do not represent hydrogen atoms at the same time; Z.sup.
    Type: Grant
    Filed: May 25, 1984
    Date of Patent: November 26, 1985
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Nobuo Sakai, Masaki Okazaki, Yoshio Inagaki
  • Patent number: 4555482
    Abstract: A silver halide photographic emulsion is disclosed. The emulsion includes a silver halide emulsion which has dispersed therein at least three types of sensitizing dyes. The emulsion includes at least one dye represented by the formula (I), at least one dye represented by the formula (II) and at least one dye represented by the formula (III). Each of the structural formulae and their substituents are defined within the specification. The resulting silver halide photographic emulsion shows a small decrease in the inherent sensitivity of the silver halide due to the sensitizing dye used.
    Type: Grant
    Filed: December 20, 1983
    Date of Patent: November 26, 1985
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Noriyuki Inoue, Masaki Okazaki, Kiyohiko Yamamuro, Haruo Takei
  • Patent number: 4554244
    Abstract: There is disclosed a silver halide photosensitive material for color photography which comprises a phenol type cyan coupler having the formula: ##STR1## wherein the substituents X.sup.1, X.sup.2, Y, Z and n are as defined in the specification and claim of this application.The cyan coupler mentioned above is a novel cyan dye image-forming coupler and the photosensitive material containing the same according to the present invention has removed the various drawbacks in the prior art.
    Type: Grant
    Filed: June 4, 1984
    Date of Patent: November 19, 1985
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Ryosuke Sato, Katsunori Kato, Takashi Sasaki, Hiroshi Sugita
  • Patent number: 4554242
    Abstract: A method for processing a color photographic light-sensitive material by subjecting an exposed silver halide color photographic light-sensitive material to color development, then to bleaching and fixing or then to bleach-fixing, which method comprises using a ferric ion complex salt as a bleaching agent in the bleaching or bleach-fixing and incorporating at least one compound represented by general formula (I) described below or a tautomer thereof: ##STR1## wherein all the symbols are defined in the appended claims, in a bleaching bath or bleach-fixing bath or in a prebath of the bleach-fixing bath. The method of the present invention does not produce poisonous materials which are harmful to the environment and provides an excellent high speed bleaching process without harming other photographic properties.
    Type: Grant
    Filed: January 9, 1985
    Date of Patent: November 19, 1985
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Shigeru Ohno, Shinzo Kishimoto, Morio Yagihara
  • Patent number: 4554241
    Abstract: A method of printing on a sheet member a realistic image of an original, uses two different superimposed impressions with two different coloring media. A first printing plate is created by interposing at least two filters between the original and the film or photoconductive surface, and a second printing plate is created by interposing at least one filter between the original and the film or photoconductive surface. Then, the two printing plates are used to print the different impressions with two different coloring media.
    Type: Grant
    Filed: March 18, 1985
    Date of Patent: November 19, 1985
    Inventor: Wallace Edwards
  • 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: 4552837
    Abstract: A silver halide color photographic emulsion is described, containing at least one sensitizing dye represented by formula (I) and at least one compound represented by formula (II). The use of compounds of formula (I) in combination with compounds of formula (II) permits the spectral sensitization of photographic emulsions without extending the wavelength region of spectral sensitivity, enabling the production of a light-sensitive material of high sensitivity and reduced fog. ##STR1## (The symbols V, W.sub.1, W.sub.2, R.sub.1, R.sub.2, R.sub.3, X, n, R.sub.5, Y, X.sub.1, m.sub.1 and m.sub.2 are as defined in the appended claims).
    Type: Grant
    Filed: April 11, 1984
    Date of Patent: November 12, 1985
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Masaki Okazaki, Osami Tanabe, Satoshi Nagaoka, Yuji Mihara, Toshinao Ukai
  • Patent number: 4551424
    Abstract: A silver halide photographic light-sensitive material is described, comprising a support and at least one silver halide emulsion layer on the support, wherein the silver halide emulsion layer contains at least one specific type of sensitizing dye, at least one of the silver halide emulsion layer and other hydrophilic colloid layers contains at least one compound of four specific types of compounds and the silver halide grains contained in the silver halide emulsion are substantially tetradecahedral grains in which the proportion of (100) faces is at least 50%; this material is superior in both sensitivity and stain resistance.
    Type: Grant
    Filed: December 14, 1984
    Date of Patent: November 5, 1985
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Tadashi Ikeda, Kenichi Kuwabara, Kiyohiko Yamamuro, Tadayoshi Kokubo
  • Patent number: 4551422
    Abstract: A silver halide photographic light-sensitive material comprising a support bearing thereon at least one silver halide emulsion layer, in which at least one of phenol cyan couplers having Formula (I) below and at least one of non-color-developable and diffusion resistive phenol compounds are contained. ##STR1## wherein, R.sub.1 represents a ballast radical necessary for endowing a phenol cyan coupler having Formula (I) and a cyan dye to be formed by the above-mentioned coupler with diffusion resistance; Ar represents an aryl radical; and X represents a hydrogen atom or a radical capable of splitting off through a coupling to an oxidant of an aromatic primary amine color developing agent.
    Type: Grant
    Filed: December 21, 1984
    Date of Patent: November 5, 1985
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Toshihiko Kimura, Yutaka Kaneko, Takashi Sasaki
  • Patent number: 4548899
    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 of the following formula (I) or (II): ##STR1## wherein R.sub.1 and R.sub.4 are each a hydrogen atom, an alkyl group or an aryl group; R.sub.2 and R.sub.6 are each a monovalent group; R.sub.3 is an alkyl group, an aryl group or a heterocyclic group; R.sub.5 is an alkyl group or an aryl group; R.sub.7 is an alkylene group, an arylene group or a bivalent organic group having at least one alkylene bonded to at least one arylene; R.sub.8 is an alkyl group, an alkenyl group, an aryl group or a heterocyclic group; X is a single bond or an alkylene group having 1 to 5 carbon atoms; Z is a hydrogen atom or a group that can be eliminated upon coupling reaction with the oxidized product of a color developing agent; and m is an integer of 0 to 4.
    Type: Grant
    Filed: November 1, 1984
    Date of Patent: October 22, 1985
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Noritaka Nakayama, Satoshi Kawakatsu, Katsunori Katoh, Kaoru Shinozaki
  • Patent number: 4547458
    Abstract: A silver halide color photographic light-sensitive material comprising a support having at least one silver halide emulsion layer thereon, said silver halide emulsion layer having a sensitivity to a certain spectral region and at least one of said silver halide emulsion layers comprising a plurality of different-speed light-sensitive layers wherein the difference in speed between the fastest-speed layer and the second fastest-speed layer of said plurality of light-sensitive layers, in terms of log I.multidot.t, is 0.2 to 0.7, and each of at least said fastest-speed and said second fastest-speed layers contains at least one monodispersed silver halide emulsion, said monodispersed emulsion being light-sensitive and consisting essentially of silver halide particles having a granularity distribution represented by the formulaS/r.ltoreq.0.
    Type: Grant
    Filed: February 7, 1985
    Date of Patent: October 15, 1985
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Toshifumi Iijima, Kiyoshi Yamashita
  • Patent number: 4546074
    Abstract: A silver halide color light sensitive material with a silver iodobromide photographic emulsion layer is described. The silver iodobromide photographic emulsion contains at least one compound represented by the general formula (I): ##STR1## and at least one compound represented by the general formula (II): ##STR2## (in the general formulae (I) and (II), all symbols are as defined in the appended claims). The surface of silver iodobromide grains of the surface low iodine content type in the photographic emulsion is adsorbed from 10.sup.-7 to 10.sup.-3 mol of iodide ion per mol of silver halide. The silver iodobromide emulsion is spectrally sensitized in a red region without causing any undesirable problems.
    Type: Grant
    Filed: October 5, 1983
    Date of Patent: October 8, 1985
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Sadao Kamei, Yuichi Ohashi, Toshinao Ukai, Kiyohiko Yamamuro, Haruo Takei
  • Patent number: 4546070
    Abstract: A method for processing a color photographic light-sensitive material comprising subjecting an exposed silver halide color photographic light-sensitive material to color development processing then to bleach processing and fixing processing separately, wherein a bath of the bleach processing contains (a) at least one bleach accelerating agent selected from a compound having a mercapto group or a disulfide bond, a thiazolidine derivative and an isothiourea derivative and (b) at least one compound represented by the following general formula (I-a) or (I-b): ##STR1## wherein M represents a hydrogen atom, an alkali metal atom or an ammonium ion; R represents a hydrogen atom, a substituted or unsubstituted alkyl group, --SO.sub.3 M.sup.1 or --COOM.sup.1 ; R.sup.1 represents --SO.sub.3 M.sup.1 or --COOM.sup.1 ; M.sup.1 represents a hydrogen atom, an alkali metal atom or an ammonium ion; and n represents an integer of 1 to 6 and when n is 2 or more, R's may be the same or different.
    Type: Grant
    Filed: December 10, 1984
    Date of Patent: October 8, 1985
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Shinzo Kishimoto, Shigeru Ohno, Akira Abe
  • Patent number: 4546073
    Abstract: Precursor compounds from which photographically-active compounds are released with a time delay correspond to the following general formula ##STR1## wherein A represents the residue of a compound which undergoes oxidative coupling;X represents --O--, --S-- or --NR.sup.1 --;Y represents a releasable group which may consist of or contain the residue of a photographically-active compound; andR represents a group for controlling the kinetics of release.Advantageous pictorial properties (inter-image effect, edge effect, modulation transfer function) are obtained with compounds according to the present invention if the photographically-active residue is the residue of a development inhibitor.
    Type: Grant
    Filed: May 16, 1984
    Date of Patent: October 8, 1985
    Assignee: Agfa-Gevaert Aktiengesellschaft
    Inventors: Peter Bergthaller, Heinrich Odenwalder, Reinhard Matejec
  • Patent number: 4544628
    Abstract: A silver halide photographic emulsion is disclosed which includes a sensitizing dye represented by general formula (I) and a compound represented by general formula (II): ##STR1## The substituents within the general formulae are defined within the specification. The emulsion can be used to prepare a photographic material which has high green-sensitivity which is obtained without expanding the wavelength region of spectral sensitivity in the green sensitive region. Further, the resulting material has these improved results and does not show substantial change of its photographic properties such as sensitivity and amount of fogging during storage.
    Type: Grant
    Filed: February 2, 1984
    Date of Patent: October 1, 1985
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Yuji Mihara, Satoshi Nagaoka, Masaki Okazaki
  • Patent number: 4543323
    Abstract: There is disclosed a light-sensitive silver halide photographic material having at least one light-sensitive layer constituted of a plural number of silver halide emulsions provided on a support, and a non-light-sensitive intermediate layer containing a diffusion resistant coupler capable of forming a migratable color forming dye or a compound capable of forming a flow-out type coupling product provided at least adjacent to the silver halide emulsion layer with the highest light sensitivity among the plural number of silver halide emulsion layers on its support side.The light-sensitive material according to this invention exhibits excellent photographic characteristics such as sensitivity, graininess, sharpness, storability and gradation.
    Type: Grant
    Filed: December 12, 1983
    Date of Patent: September 24, 1985
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Toshifumi Iijima, Satoshi Nakagawa, Hiroshi Menjo
  • Patent number: 4540657
    Abstract: Photographic coupler solvents having at least one terminal epoxy group and at least one ester or amide group are described for incorporation in photographic emulsions and elements. The solvents are preferably employed in the magenta layer to reduce background stain produced by exposure to light, heat and humidity.
    Type: Grant
    Filed: June 6, 1984
    Date of Patent: September 10, 1985
    Assignee: Eastman Kodak Company
    Inventor: Sundaram Krishnamurthy