And Additional Reactive Compound Containing Patents (Class 430/471)
  • Patent number: 6528243
    Abstract: A silver halide color photographic light-sensitive material has a support provided thereon a photographic constitutional layer including at least one photographic light-sensitive layer that contains a light-sensitive silver halide, an organosilver salt having a nitrogen-containing heterocycle, a compound capable of forming a dye by coupling reaction with an oxidized developing agent, and a binder, wherein the light-sensitive layer contains: (A) as the silver halide, a silver halide emulsion composed of tabular silver halide grains having a main face made up of a (111) plane, an average diameter of an equivalent circle of at least 0.70 &mgr;m, and an average thickness of less than 0.20 &mgr;m; and (B) as the organosilver salt, a compound in which a hydrogen on a 5- or 6-membered nitrogen-containing heterocycle having at least one —NH— group is replaced with Ag.
    Type: Grant
    Filed: October 25, 2001
    Date of Patent: March 4, 2003
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Tomoyuki Koide, Toshio Kawagishi
  • Patent number: 4917992
    Abstract: Salts of 1-phenyl-3-pyrazolidinones which are useful photographic silver halide developing agents.
    Type: Grant
    Filed: October 23, 1987
    Date of Patent: April 17, 1990
    Assignee: Ciba-Geigy AG
    Inventors: Malcolm D. Tirel, William E. Long
  • Patent number: 4863839
    Abstract: A process for forming direct positive color photographic image is disclosed whereby a color photographic material having on a support at least one previously unfogged internal latent image-type silver halide emulsion layer and at least color forming coupler is developed, after imagewise exposure, with a surface color developer containing an aromatic primary amine color developing agent while applying thereto a fogging treatment, with or without the presence of a nucleating agent, before or during the development step, and bleaching and fixing (or blixing) the color photographic material, whereinthe pH of the surface color developer is not higher than 11.2,the color image forming coupler is a compound which is substantially non-diffusible and forms and releases a dye causing oxidative coupling with the aromatic primary amine color developing agent,and the surface of the silver halide in the internal latent image-type silver halide has been gold-sensitized.
    Type: Grant
    Filed: August 14, 1987
    Date of Patent: September 5, 1989
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Tatsuo Heki, Noriyuki Inoue
  • Patent number: 4863836
    Abstract: There is provided a method for processing a silver halide color photographic material which comprises processing the silver halide color photographic material with a color developer containing an aromatic primary amine color developing agent and a specific amino compound. According to this method the stability and color forming property of a color developer are improved so that the increased fogging problem in continuous processing is lessened and the processing time is shortened. There is also provided a color developer composition which can be used as the developer, as it is or after adjusting its composition.
    Type: Grant
    Filed: February 22, 1988
    Date of Patent: September 5, 1989
    Assignee: Fuji Photo Film, Co., Inc.
    Inventors: Takatoshi Ishikawa, Nobutaka Ohki, Morio Yagihara
  • Patent number: 4812389
    Abstract: A process for processing a DIR coupler-containing silver halide color photographic material for photographing use in a continuous manner with replenishment of a developer is disclosed in which said DIR coupler is a coupler which has in a coupling site a group that functions as a development inhibitor or a development inhibitor precursor upon being eliminated from the coupling active site by color development processing and that will be decomposed to a compound exerting substantially no influences on photographic properties after flowing into a color developing solution, said development inhibitor having a half-value period of 4 hours or shorter than that at a pH of 10.0, and in which the developing solution is replenished in an amount of 700 ml or less per m.sup.2 of developed light-sensitive materials.
    Type: Grant
    Filed: September 25, 1986
    Date of Patent: March 14, 1989
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Kei Sakanoue, Seiji Ichijima, Shinzo Kishimoto
  • Patent number: 4426441
    Abstract: In a dye-forming imaging material comprising (a) a dye-forming coupler, and (b) an organic reducing agent that is capable in its oxidized form of reacting with the dye-forming coupler to form a dye, improvements are provided by a reducing agent that is a ureidoaniline silver halide developing agent free of strong electron withdrawing groups. Such an imaging material can be a photographic silver halide material. The imaging material can be a photothermographic material for producing a dye image comprising, in reactive association, (a) photographic silver halide, (b) a dye-forming coupler, and (c) an oxidation-reduction image forming combination comprising (1) an organic silver salt oxidizing agent, and (2) an organic reducing agent for the organic silver salt oxidizing agent, wherein the reducing agent is a ureidoaniline which is capable in its oxidized form of reacting with the dye-forming coupler to form a dye.
    Type: Grant
    Filed: December 3, 1982
    Date of Patent: January 17, 1984
    Assignee: Eastman Kodak Company
    Inventors: Anthony Adin, Roy C. DeSelms
  • Patent number: 4394440
    Abstract: A yellow-dye-forming photographic developing composition having improved stability comprises a haloacetanilide coupler, such as alpha-pivalyl-alpha-(4-carboxyphenoxy)-2,4-dichloroacetanilide, an N-alkyl-N-alkoxyalkyl-p-phenylenediamine developing agent, such as 4-amino-N-ethyl-N-(2-methoxyethyl)-m-toluidine di-p-toluene sulfonate, and a 4,4-disubstituted-1-aryl-3-pyrazolidinone, such as 4,4-dimethyl-1-phenyl-3-pyrazolidinone.
    Type: Grant
    Filed: January 22, 1982
    Date of Patent: July 19, 1983
    Assignee: Eastman Kodak Company
    Inventor: Carl R. Cappel
  • Patent number: 4371609
    Abstract: A method of forming dye images by processing a photographic material containing imagewise distributed catalyzer substance in the presence of hydrogen peroxide, a coupler and certain aromatic primary amine compounds.
    Type: Grant
    Filed: July 16, 1981
    Date of Patent: February 1, 1983
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Makoto Kajiwara, Akihiko Miyamoto, Keiji Ohbayashi, Masaru Iwagaki
  • 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
  • Patent number: 4207111
    Abstract: A color photosensitive material having a support and a silver halide photosensitive layer which material includes a coupler represented by the following formulas (IV), (V) or (VI) having therein a group represented by formula (I), said coupler being capable of forming an azomethine dye on coupling with the oxidation product of an aromatic primary amine developer: ##STR1## wherein the substituents on the above formulas is herein defined, is described, said couplers capable of giving improved light fastness.
    Type: Grant
    Filed: December 27, 1977
    Date of Patent: June 10, 1980
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Mitsuto Fujiwhara, Takashi Sasaki, Takashi Uchida
  • Patent number: 4198239
    Abstract: An improvement in the prevention color-fog and staining in color-photographic materials is obtained by the inclusion of acylamino substituted hydroquinones derivatives. The compounds can easily be synthesized do not crystalize from their dispersions and are not oxidized to colored by-products during development.
    Type: Grant
    Filed: August 31, 1977
    Date of Patent: April 15, 1980
    Assignee: AGFA-Gevaert, A.G.
    Inventors: Hans-Heinrich Credner, Rigobert Otto, Karl-Wilhelm Schranz