Patents Examined by J. Travis Brown
  • Photographic recording material for the production of color images to be viewed by reflected light
    Patent number: 4480027
    Abstract: A photographic recording material for the production of color images to be viewed by reflected light contains, on a transparent support layer at least 60 .mu.m in thickness with smooth surfaces, a plurality of silver halide emulsion layers with differing spectral sensitivities and color couplers associated therewith and a light reflective opaque layer of binder. The material is developed chromogenically from the coated side. Exposure and viewing are carried out through the transparent support layer.
    Type: Grant
    Filed: November 3, 1982
    Date of Patent: October 30, 1984
    Assignee: Agfa-Gevaert Aktiengesellschaft
    Inventors: Erwin Sch/o/ n, Karl-Wilhelm Schranz, Erich Wolff
  • Stable dispersions for use in photographic film having an opaque backing layer
    Patent number: 4480026
    Abstract: In preparing an opaque backing layer for a photographic film, superior covering power and coating dispersion stability are obtained by (1) dispersing carbon black in a minor phase of polyvinyl pyrrolidone/vinyl acetate copolymer before addition of a major phase of polyvinyl alcohol, and (2) delaying the addition of surfactant or coating aids until after complete mixing of the polyvinyl alcohol with the solid carbon black dispersion. This coating dispersion is particularly useful for the preparation of a dischargeable opaque backing layer for a diffusion transfer film element.
    Type: Grant
    Filed: August 2, 1982
    Date of Patent: October 30, 1984
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Robert W. Ashcraft, Rusty E. Koenigkramer
  • Silver halide color photographic light-sensitive material
    Patent number: 4477558
    Abstract: A silver halide color photographic light-sensitive material comprising a support having thereon at least one silver halide emulsion layer, the color photographic light-sensitive material containing a cyan dye forming coupler represented by the following general formula (I): ##STR1## wherein R represents a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group or a heterocyclic group; X represents a hydrogen atom or a group capable of being released upon an oxidative coupling reaction with a developing agent; R.sup.1 represents a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group or a substituted or unsubstituted heterocyclic group.
    Type: Grant
    Filed: April 21, 1983
    Date of Patent: October 16, 1984
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Akira Ogawa, Kozo Aoki, Takayoshi Kamio
  • Light-sensitive silver halide color photographic material
    Patent number: 4477560
    Abstract: There is disclosed a light-sensitive silver halide color photographic material, comprising a group of silver halide emulsion layers constituting the same color sensitive layer, said group of emulsion layers consisting of at least two silver halide emulsion layers with different light sensitivities, the layer with the highest sensitivity incorporating at least one kind of a compound having a non-diffusion type coupler component and a scavenger component for an oxidized product of a color forming developing agent in an amount of 1 to 5 mole % per mole of the silver halide in the layer containing said compound.The light-sensitive silver halide color photographic material according to the present invention has high sensitivity and can provide high image quality with a broad latitude.
    Type: Grant
    Filed: December 13, 1982
    Date of Patent: October 16, 1984
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Takeo Koitabashi, Kiyoshi Yamashita, Toshifumi Iijima
  • Silver halide color photographic light-sensitive material
    Patent number: 4477563
    Abstract: A silver halide color photographic light-sensitive material is described comprising a support having thereon a silver halide emulsion layer containing a coupler having, at the coupling active position, a group which provides a compound having a development inhibiting property when the group is released from the coupling device position of the coupler upon the color development reaction and which is decomposed to a compound which does not substantially influence the photographic properties when the compound diffuses into a color developing solution.The silver halide color photographic light-sensitive material containing a novel class of development inhibitor releasing couplers provides color images of good sharpness and improved color reproduction without causing contamination of the processing solution.
    Type: Grant
    Filed: August 25, 1983
    Date of Patent: October 16, 1984
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Seiji Ichijima, Kei Sakanoue, Hidetoshi Kobayashi, Keiichi Adachi
  • Photosensitive silver halide color photographic materials
    Patent number: 4477559
    Abstract: There is disclosed a photosensitive silver halide color photographic material comprising a support having on one side thereof, an antihalation layer, a red-sensitive silver halide emulsion layer, a green-sensitive silver halide emulsion layer and a blue-sensitive silver halide emulsion layer wherein each of said silver halide emulsion layers contains a non-diffusable coupler. The other surface of the support has thereon a dye-containing backing layer. The antihalation layer contains no more than 0.2 g/m.sup.2 of silver and the total amount of silver contained in the silver halide emulsion layers is at least 7.0 g/m.sup.2.
    Type: Grant
    Filed: February 22, 1983
    Date of Patent: October 16, 1984
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Masao Iwamuro, Kenji Kumashiro
  • Silver halide color photographic material
    Patent number: 4476219
    Abstract: A silver halide color photographic material which is improved in granularity by containing both a gallic acid amide derivative represented by the following general formula (I) and a high speed reaction type coupler: ##STR1## wherein R.sup.1 and R.sup.2 each represents a hydrogen atom, a substituted or an unsubstituted aliphatic group, a substituted or an unsubstituted aromatic group, or a substituted or an unsubstituted heterocyclic group, and they may be the same group provided that they are not simultaneously hydrogen atoms, and, further, they may combine with each other to form a ring.
    Type: Grant
    Filed: March 11, 1983
    Date of Patent: October 9, 1984
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Kei Sakanoue, Shigeo Hirano, Takehiko Ueda, Keiichi Adachi
  • Method for producing photographic emulsion
    Patent number: 4474872
    Abstract: A method for producing a photographic emulsion is disclosed. The method includes the process of adding a dispersion of a substantially water-insoluble photographic additive to a photographic emulsion. The dispersion being prepared merely by mechanically grinding and dispersing the photographic additive in a form of fine grain having a size of 1.mu. or less in an aqueous system adjusted to a pH value of 6 to 8 and controlled to a temperature of 60.degree. to 80.degree. C. The additive is included in the photographic emulsion without the need of an organic solvent. The emulsion of the invention can be easily and quickly coated to form a uniform layer.
    Type: Grant
    Filed: December 17, 1982
    Date of Patent: October 2, 1984
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Hiroshi Onishi, Kazutoshi Inada, Nobuaki Miyasaka, Naoyasu Deguchi, Masayuki Kuroishi
  • Silver halide color photographic light-sensitive material
    Patent number: 4474870
    Abstract: A silver halide color photographic light-sensitive material comprising a support having thereon a silver halide emulsion layer containing a 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 the following general formula (I): ##STR1## wherein R.sub.1 represents a hydrogen atom, a lower alkyl group containing from 1 to 4 carbon atoms or a chlorine atom; R.sub.2 represents an unsubstituted or substituted alkylene group which may be a straight chain or a branched chain; R.sub.
    Type: Grant
    Filed: January 11, 1983
    Date of Patent: October 2, 1984
    Assignee: Fuji Photo Film Company Limited
    Inventors: Morio Yagihara, Keiji Mihayashi, Takashi Ozawa
  • Color photographic light-sensitive material
    Patent number: 4474874
    Abstract: A color photographic silver halide light-sensitive material which prevents formation of color fog is disclosed, containing a negative gradation photographic silver halide emulsion which is substantially of the surface latent image type, and at least one compound represented by the general formula (I): ##STR1## wherein X represents --CONR.sup.1 R.sup.2, --COR.sup.1, --SO.sub.2 R.sup.1, or --SO.sub.3 R.sup.1 and wherein R.sup.1 and R.sup.2 each are selected from the group consisting of a hydrogen atom, a substituted or unsubstituted aliphatic group, and a substituted or unsubstituted aromatic group, and are selected such that may combine together to form a ring.
    Type: Grant
    Filed: March 11, 9183
    Date of Patent: October 2, 1984
    Assignee: Fuji Photo Film Company Limited
    Inventors: Shigeo Hirano, Kei Sakanoue, Keiichi Adachi
  • Dye image-generating photographic elements
    Patent number: 4471049
    Abstract: Photographic elements intended to generate dye images containing at least one colloidal silver layer and at least one hydroquinone antistain agent have been observed to suffer from random fog spotting, which can be reduced by incorporating a catalyst for the decomposition of hydrogen peroxide. The imagewise exposed elements when photographically processed and bleached of silver produce viewable dye images.
    Type: Grant
    Filed: August 22, 1983
    Date of Patent: September 11, 1984
    Assignee: Eastman Kodak Company
    Inventors: Roy King, David T. Southby
  • Infrared color photographic film
    Patent number: 4469779
    Abstract: Infrared color film is constructed with a particular arrangement of dye sensitized layers so that the film may respond to the entire visible spectrum, including the blue visible band, as well as the infrared band by choosing the appropriate camera lens filter.
    Type: Grant
    Filed: March 16, 1983
    Date of Patent: September 4, 1984
    Assignee: Environmental Research Institute of Michigan
    Inventor: Gwynn H. Suits
  • Light-sensitive silver halide color photographic material
    Patent number: 4469785
    Abstract: There is disclosed a light-sensitive silver halide color photographic material having a silver halide emulsion layer containing at least one layer of a negative working silver halide on a support, comprising the negative working silver halide comprises at least 80 mole % of silver chloride, and being color sensitized with at least one kind of sensitizing dyes having the local maximum value of spectral sensitivity in the wavelength region from 445 nm to 490 nm and at least one kind of sensitizing dyes having the local maximum value of spectral sensitivity in the wavelength region from 420 nm to less than 445 nm.The photographic material according to this invention exhibits excellent color reproducibility and quick process suitability.
    Type: Grant
    Filed: December 10, 1982
    Date of Patent: September 4, 1984
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Shigeo Tanaka, Kaoru Onodera, Noboru Fujimori
  • Processing for silver halide color photographic materials
    Patent number: 4469781
    Abstract: The disclosed invention is a means for preventing the reduction of color density caused by the formation of leuco compounds from cyan dyes when processing color photographic materials with a bleach solution or a blix solution containing benzyl alcohol. The invention involves incorporating the compound shown by the following formula (I) in the bleach solution or blix solution: ##STR1## wherein X represents a hydrogen atom or an acetyl group; R represents an aryl group; and R.sub.1, R.sub.2, R.sub.3 and R.sub.4, which may be the same or different, each represents a hydrogen atom, an alkyl group or an aryl group.
    Type: Grant
    Filed: November 1, 1982
    Date of Patent: September 4, 1984
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Takatoshi Ishikawa, Takashi Nakamura
  • Recording material for color photography
    Patent number: 4465757
    Abstract: Compounds of the formula I ##STR1## in which A, R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5 and R.sup.6 are as defined in claim 1, are effective optical stabilizers for photographic dyes and their precursors. They are added to the colorphotographic recording materials as the latter are being prepared, and, as a result, the developed images have a longer optical stability.
    Type: Grant
    Filed: September 16, 1983
    Date of Patent: August 14, 1984
    Assignee: Ciba-Geigy A.G.
    Inventors: David G. Leppard, Jean Rody
  • Colorphotographic recording material
    Patent number: 4465765
    Abstract: Compounds of the formula I ##STR1## in which A is a direct bond or a substituted or unsubstituted alkylene radical, X is --O-- or --N(R.sup.16)--, R.sup.2 is a monovalent radical, R.sup.5 or R.sup.3 is hydroxyl, and R.sup.1, R.sup.4, R.sup.6, R.sup.7 and R.sup.8 are hydrogen or monovalent radicals, are effective stabilizers for photographic dyes and precursors thereof. In particular, they increase the light fastness of the developed color images.
    Type: Grant
    Filed: August 16, 1983
    Date of Patent: August 14, 1984
    Assignee: Ciba-Geigy A.G.
    Inventors: David G. Leppard, Jean Rody
  • Silver halide photosensitive materials for color photography
    Patent number: 4465766
    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: October 11, 1983
    Date of Patent: August 14, 1984
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Ryosuke Sato, Katsunori Kato, Takashi Sasaki, Hiroshi Sugita
  • Method for color developing color photographic silver halide light-sensitive material
    Patent number: 4465762
    Abstract: A method for forming a color image comprising color developing a color photographic silver halide light-sensitive material containing at least one compound represented by formula (I) ##STR1## wherein X is a hydrogen atom or an acetyl group, R is an aryl group, and each of R.sub.1, R.sub.2, R.sub.3, and R.sub.4 is a hydrogen atom, an alkyl group, or an aryl group,using a color developer containing a p-phenylenediamine-based and/or p-aminophenol-based color developing agent and without performing black-and-white development.
    Type: Grant
    Filed: March 3, 1982
    Date of Patent: August 14, 1984
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Takatoshi Ishikawa, Takashi Nakamura, Kotaro Nakamura
  • Color photographic recording material
    Patent number: 4464464
    Abstract: The color yield and color granularity of color photographic recording materials is improved by using compounds of the general formula I as the sole or as additional oil formers in coupler-containing internal layers. The effect is particularly clear in layers having the small amount of gelatine. ##STR1## wherein: R.sup.1 is an aliphatic group having at least 8 carbon atoms,R.sup.2 is hydrogen or alkyl,R.sup.3 is a heterocyclic group or --(X).sub.n --R.sup.4,R.sup.4 is aryl,X is --O--, --NH--, --NCH.sub.3 --, or --CH.dbd.CH--,m is 0, 1 or 2, andn is 0 or 1.
    Type: Grant
    Filed: July 26, 1982
    Date of Patent: August 7, 1984
    Assignee: Agfa-Gevaert Aktiengesellschaft
    Inventors: Reinhart Matejec, Fritz Nittel, Johannes Sobel
  • Silver halide color photographic light-sensitive material
    Patent number: 4464463
    Abstract: A silver halide color photographic light-sensitive material comprises a support having thereon a light-sensitive silver halide emulsion layer and a light-insensitive layer is disclosed. The material contains within the light-sensitive layer or the light-insensitive layer a compound capable of reacting with and fixing formaldehyde gas, said compound being represented by the general formula (I) or (II): ##STR1## The compound capable of reacting with and fixing formaldehyde gas is loaded into an ultraviolet ray absorbing polymer latex comprised of a polymer having a repeating unit derived from a monomer represented by the general formula (III): ##STR2## The substituents within the above formulae are defined within the specification.
    Type: Grant
    Filed: July 26, 1983
    Date of Patent: August 7, 1984
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Tetsuro Kojima, Hidetoshi Kobayashi