Patents Examined by Travis Brown
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Patent number: 4480027Abstract: 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: GrantFiled: November 3, 1982Date of Patent: October 30, 1984Assignee: Agfa-Gevaert AktiengesellschaftInventors: Erwin Sch/o/ n, Karl-Wilhelm Schranz, Erich Wolff
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Patent number: 4480026Abstract: 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: GrantFiled: August 2, 1982Date of Patent: October 30, 1984Assignee: E. I. Du Pont de Nemours and CompanyInventors: Robert W. Ashcraft, Rusty E. Koenigkramer
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Patent number: 4478639Abstract: An apparatus and method of producing a parallax stereogram, i.e., free vision stereogram, and particularly for the accurate registration of a plurality of film images in order to ensure stereographic reproduction. The images on a film strip are optically viewed to establish homologous points for each film frame image. In one embodiment two images are optically superimposed to establish a stereo base distance. Each film frame is marked in accordance with the homologous points or stereo base distance. The marking may be mechanical or optically generated. Each film frame is thereafter aligned or sensed while in an enlarger, the marks establishing the accurate registration of eaach frame. Each film frame is exposed onto a photosensitive material using a movable line grid. A lenticular screen is superimposed over the developed picture to form the stereoscopic photograph.Type: GrantFiled: December 27, 1977Date of Patent: October 23, 1984Assignee: Three Dimensional Photography CorporationInventors: Edgar C. Smith, James B. Campbell
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Patent number: 4477560Abstract: 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: GrantFiled: December 13, 1982Date of Patent: October 16, 1984Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Takeo Koitabashi, Kiyoshi Yamashita, Toshifumi Iijima
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Patent number: 4477563Abstract: 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: GrantFiled: August 25, 1983Date of Patent: October 16, 1984Assignee: Fuji Photo Film Co., Ltd.Inventors: Seiji Ichijima, Kei Sakanoue, Hidetoshi Kobayashi, Keiichi Adachi
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Patent number: 4477558Abstract: 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: GrantFiled: April 21, 1983Date of Patent: October 16, 1984Assignee: Fuji Photo Film Co., Ltd.Inventors: Akira Ogawa, Kozo Aoki, Takayoshi Kamio
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Patent number: 4477559Abstract: 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: GrantFiled: February 22, 1983Date of Patent: October 16, 1984Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Masao Iwamuro, Kenji Kumashiro
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Patent number: 4476219Abstract: 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: GrantFiled: March 11, 1983Date of Patent: October 9, 1984Assignee: Fuji Photo Film Co., Ltd.Inventors: Kei Sakanoue, Shigeo Hirano, Takehiko Ueda, Keiichi Adachi
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Patent number: 4474870Abstract: 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: GrantFiled: January 11, 1983Date of Patent: October 2, 1984Assignee: Fuji Photo Film Company LimitedInventors: Morio Yagihara, Keiji Mihayashi, Takashi Ozawa
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Patent number: 4474872Abstract: 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: GrantFiled: December 17, 1982Date of Patent: October 2, 1984Assignee: Fuji Photo Film Co., Ltd.Inventors: Hiroshi Onishi, Kazutoshi Inada, Nobuaki Miyasaka, Naoyasu Deguchi, Masayuki Kuroishi
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Patent number: 4474874Abstract: 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: GrantFiled: March 11, 9183Date of Patent: October 2, 1984Assignee: Fuji Photo Film Company LimitedInventors: Shigeo Hirano, Kei Sakanoue, Keiichi Adachi
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Patent number: 4471049Abstract: 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: GrantFiled: August 22, 1983Date of Patent: September 11, 1984Assignee: Eastman Kodak CompanyInventors: Roy King, David T. Southby
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Patent number: 4469779Abstract: 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: GrantFiled: March 16, 1983Date of Patent: September 4, 1984Assignee: Environmental Research Institute of MichiganInventor: Gwynn H. Suits
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Patent number: 4469785Abstract: 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: GrantFiled: December 10, 1982Date of Patent: September 4, 1984Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Shigeo Tanaka, Kaoru Onodera, Noboru Fujimori
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Patent number: 4469781Abstract: 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: GrantFiled: November 1, 1982Date of Patent: September 4, 1984Assignee: Fuji Photo Film Co., Ltd.Inventors: Takatoshi Ishikawa, Takashi Nakamura
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Patent number: 4465765Abstract: 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: GrantFiled: August 16, 1983Date of Patent: August 14, 1984Assignee: Ciba-Geigy A.G.Inventors: David G. Leppard, Jean Rody
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Patent number: 4465762Abstract: 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: GrantFiled: March 3, 1982Date of Patent: August 14, 1984Assignee: Fuji Photo Film Co., Ltd.Inventors: Takatoshi Ishikawa, Takashi Nakamura, Kotaro Nakamura
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Patent number: 4465757Abstract: 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: GrantFiled: September 16, 1983Date of Patent: August 14, 1984Assignee: Ciba-Geigy A.G.Inventors: David G. Leppard, Jean Rody
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Patent number: 4465766Abstract: 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: GrantFiled: October 11, 1983Date of Patent: August 14, 1984Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Ryosuke Sato, Katsunori Kato, Takashi Sasaki, Hiroshi Sugita
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Patent number: 4464463Abstract: 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: GrantFiled: July 26, 1983Date of Patent: August 7, 1984Assignee: Fuji Photo Film Co., Ltd.Inventors: Tetsuro Kojima, Hidetoshi Kobayashi