And Containing Plural Layers Sensitive To The Same Spectral Region Patents (Class 430/506)
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Patent number: 4672027Abstract: Moderate camera speed photographic elements for producing subtractive primary dye images are disclosed, including one emulsion layer comprised of silver bromide or bromoiodide grains having a mean diameter in the range of from 0.2 to 0.55 .mu.m including tabular grains having an aspect ratio of greater than 8:1 accounting for at least 50 percent of the total projected area of the grains in the emulsion layer and being positioned to receive imaging radiation prior to one or more blue recording emulsion layers. Enhancement of speed-granularity relationships, blue to minus blue speed separation, silver utilization, and image sharpness can all be realized.Type: GrantFiled: August 1, 1986Date of Patent: June 9, 1987Assignee: Eastman Kodak CompanyInventors: Richard L. Daubendiek, Gary L. House, Timothy R. Gersey
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Patent number: 4670375Abstract: Disclosed is a light-sensitive silver halide color photographic material comprising a support and a plurality of silver halide emulsion layers on the support, the emulsion layers being substantially identical in color sensitivity but different in sensitivity and containing at least one of a dye image-forming coupler, characterized in that silver halide grains contained in at least one layer of the plurality of silver halide emulsion layers consist substantially of monodispersed silver halide grains, a color concentration of the emulsion layer comprising the monodispersed silver halide grains being within the range of 60 to 98% of the total color concentration of the plurality of silver halide emulsion layers.The employment of the monodispersed silver halide grains of this invention and the increase in a concentration of the grains in the emulsion layers permit the improvement of graininess, the enlargment of exposure range and better of stability to processing and stability with time.Type: GrantFiled: September 13, 1985Date of Patent: June 2, 1987Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Kenji Michiue, Toshihiko Yagi, Katsumasa Yamazaki, Sohei Goto, Yoshiharu Mochizuki
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Patent number: 4663271Abstract: A color photographic light-sensitive material comprising a support having provided thereon at least one red-sensitive silver halide emulsion layer, at least one green-sensitive silver halide emulsion layer and at least one blue-sensitive silver halide emulsion layer is disclosed. The green-sensitive silver halide emulsion layer has a spectral sensitivity distribution whose wave-averaged wavelength of sensitivity ranges from 520 nm to 580 nm and the material further contains at least one silver halide emulsion layer which is light-responsive opposite to other layers and forms an image having substantially the same hue as that of the red-sensitive silver halide emulsion layer and whose spectral sensitivity distribution has a wave-averaged wavelength of sensitivity ranging from 500 nm to 560 nm. The material is excellent in both saturation of red and distinction of green colors.Type: GrantFiled: March 4, 1986Date of Patent: May 5, 1987Assignee: Fuji Photo Film Co., Ltd.Inventors: Yasushi Nozawa, Noboru Sasaki
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Patent number: 4652515Abstract: A silver halide color photographic material which comprises a support having thereon at least two silver halide light-sensitive layers having essentially the same color sensitivity but different speeds and a light-insensitive layer positioned adjacent to the highest-speed layer of said light-sensitive layers and containing a compound which reacts with the oxidation products of a color developing agent to form a diffusible development restraining compound or a precursor thereof. The photographic material provides a color image having excellent graininess and color reproduction and has excellent characteristics of development processing.Type: GrantFiled: August 5, 1985Date of Patent: March 24, 1987Assignee: Fuji Photo Film Co., Ltd.Inventors: Tadashi Ogawa, Jun Arakawa, Satoshi Nagaoka, Yuichi Ohashi, Koji Tamoto
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Patent number: 4647527Abstract: A silver halide color photographic light-sensitive material is described, which is of ultra-high-sensitivity and is characterized by having the following light-sensitive layer unit (I), (II) or (III):Unit (I): a light-sensitive layer unit comprising: (a) a blue- and green-sensitive layer containing (a-1) a yellow image-forming coupler, (a-2) a magenta image-forming coupler, and (a-3) a cyan colored coupler; and (b) a green- and red-sensitive layer containing (b-1) a cyan image-forming coupler, (b-2) a magenta image-forming coupler, and (b-3) a yellow colored coupler.Unit (II): a light-sensitive layer unit comprising: (a) a blue- and red-sensitive layer containing (a-1) a yellow image-forming coupler, (a-2) a cyan image-forming coupler, and (a-3) a magenta colored coupler; and (b) a green- and red-sensitive layer containing (b-1) a magenta image-forming coupler, (b-2) a cyan image-forming coupler, and (b-3) a yellow colored coupler.Type: GrantFiled: May 22, 1984Date of Patent: March 3, 1987Assignee: Fuji Photo Film Co., Ltd.Inventors: Shinpei Ikenoue, Akikazu Mikawa, Seiji Ichijima
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Patent number: 4640890Abstract: A silver halide color photographic material is described comprising a support having thereon at least one red-sensitive silver halide emulsion layer, at least one green-sensitive silver halide emulsion layer, and at least one blue-sensitive silver halide emulsion layer, with at least one of said light-sensitive silver halide emulsion layers containing a mono-dispersed silver halide emulsion, said color photogrphic material further comprising at least one auxiliary layer containing silver halide grains having substantially light-insensitivity and containing more than 75 mole % silver chloride.The silver halide color photographic material is improved in dependence of photographic characteristics with respect to the extent of stirring of a processing solution during development processing.Type: GrantFiled: July 31, 1985Date of Patent: February 3, 1987Assignee: Fuji Photo Film Co., Ltd.Inventors: Munehisa Fujita, Akio Mitsui
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Patent number: 4639410Abstract: A silver halide color photographic light-sensitive material comprises a support and at least one light-sensitive layer. This layer has a plurality of silver halide emulsion layers substantially identical in color sensitivity, but differing in speed. The light-sensitive layer is comprised substantially of monodispersed silver halide emulsions A and B, each containing silver halide particles of the core/shell-type. The silver halide particle sizes of emulsions B and A have a ratio, when multiplied by 100, of less than 70 and the silver halide particles of emulsion B have a silver iodide content in their core that is not less than 5 mole % smaller than that of the core of the silver halide particles of emulsion A.Type: GrantFiled: February 1, 1985Date of Patent: January 27, 1987Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Yoshihara Mochizuki, Sohei Goto, Toshihiko Yagi, Katsumasa Yamazaki, Kenji Michiue
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Patent number: 4639409Abstract: A silver halide color photographic material comprising a support having thereon, in succession, a 1st silver halide photographic light-sensitive emulsion layer, a photographic auxiliary layer, and a 2nd silver halide photographic light-sensitive emulsion layer, or comprising a support having on one side thereof a 1st silver halide light-sensitive layer and on the other side thereof a photographic auxiliary layer and a 2nd silver halide photographic light-sensitive layer, the photographic auxiliary layer having a spectral reflectance of higher than 20% in a wavelength range of 410 nm to 700 nm and a spectral transmittance of higher than 5% in the same wavelength range. The invention provides a color photographic material giving recorded images, etc., capable of viewing by both reflected light and transmitted light.Type: GrantFiled: April 19, 1985Date of Patent: January 27, 1987Assignee: Fuji Photo Film Co., Ltd.Inventors: Soichiro Yamamoto, Takeo Shimada
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Patent number: 4626498Abstract: A color reversal photographic light-sensitive material is described having at least one light-sensitive silver halide emulsion layer, wherein at least one of said emulsion layer and a layer adjacent thereto contains a silver halide emulsion of silver halide grains containing internal fog centers.Type: GrantFiled: May 21, 1984Date of Patent: December 2, 1986Assignee: Fuji Photo Film Co., Ltd.Inventors: Sadanobu Shuto, Yasuhiro Hayashi, Munehisa Fujita, Kazunori Hasebe
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Patent number: 4614707Abstract: A color reversal photographic light-sensitive materials comprising a base having thereon (a) at least one light-sensitive silver halide emulsion layer containing a dye forming coupler and (b) a silver halide emulsion layer substantially without light-sensitivity provided adjacent to said light-sensitive layer, or (a) at least one light-sensitive silver halide emulsion layer containing a dye forming coupler, (b) a silver halide emulsion layer substantially without light-sensitivity to light, and (c) an intermediate layer therebetween, wherein said intermediate layer or said silver halide emulsion layer substantially without light-sensitivity, or both said intermediate layer and said silver halide emulsion layer substantially without light-sensitivity contain at least one compound represented by the following formula (I): ##STR1## wherein R.sup.1 and R.sup.2, which may be the same or different, each represents a hydrogen atom or a group having 1 to 10 carbon atoms capable of being hydrolyzed with alkali, R.sup.Type: GrantFiled: February 19, 1985Date of Patent: September 30, 1986Assignee: Fuji Photo Film Co., Ltd.Inventors: Munehisa Fujita, Yasuhiro Hayashi, Takashi Ozawa, Nobutaka Ohki
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Patent number: 4613563Abstract: A silver halide photographic light-sensitive material comprising a support having provided thereon at least one internal latent image type direct positive silver halide emulsion layer is disclosed, wherein(1) said internal latent image type direct positive silver halide emulsion layer comprises at least two layers having substantially the same color sensitivity, or(2) at least said internal latent image type direct positive silver halide emulsion and a solid pigment-containing layer contiguous thereto, which is positioned on the side opposite to the side of the silver halide emulsion layer to be exposed, are provided,and wherein at least one internal latent image type direct positive silver halide emulsion in (1) or (2) has a binder/silver halide (calculated as silver) ratio by weight of more than 1.25.Type: GrantFiled: January 29, 1985Date of Patent: September 23, 1986Assignee: Fuji Photo Film Co., Ltd.Inventor: Ashita Murai
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Patent number: 4608334Abstract: A silver halide color light-sensitive material having improved graininess is described, comprising a support having provided thereon at least two emulsion layers that are sensitive to the same color light but have different sensitivities, wherein a light-insensitive intermediate layer comprising gelatin is provided between any two of said emulsion layers that are adjacent to each other and the higher sensitivity emulsion layer of said two layers has a smaller silver/coupler molar ratio than that of the lower sensitivity emulsion layer of said two emulsion layers.Type: GrantFiled: September 12, 1985Date of Patent: August 26, 1986Assignee: Fuji Photo Film Co., Ltd.Inventors: Sadanobu Shuto, Munehisa Fujita, Kazunori Hasebe
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Patent number: 4599302Abstract: In most highly sensitive recording materials containing silver halide, the graininess may be improved by the addition of a virtually insensitive silver halide-emulsion to a most highly sensitive light-sensitive silver halide emulsion layer.Type: GrantFiled: May 20, 1985Date of Patent: July 8, 1986Assignee: Agfa-Gevaert AktiengesellschaftInventor: Rainer Scheerer
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Patent number: 4594314Abstract: A silver halide color photographic light-sensitive material comprising a support having thereon a lower-speed emulsion containing a phenol cyan coupler and a higher-speed emulsion containing a naphthol cyan coupler. Both the lower-speed emulsion and the higher-speed emulsion have the same color sensitivity.Type: GrantFiled: July 5, 1985Date of Patent: June 10, 1986Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Toshihiko Kimura, Takashi Sasaki, Yutaka Kaneko
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Patent number: 4582780Abstract: Adjacency effects of a color photographic material may be increased by dividing a light-sensitive silver halide emulsion layer into three emulsion layers sensitive to the same spectral region of the visible light, the uppermost silver halide emulsion layer of which has the highest sensitivity and the lowermost silver halide emulsion layer has the lowest sensitivity, wherein the maximum color density of the uppermost silver halide emulsion layer, after color development, is lower than 0.60 and the maximum color density of both the intermediate and lowermost silver halide emulsion layers, after color development, are each higher than 0.60.Type: GrantFiled: September 24, 1984Date of Patent: April 15, 1986Assignee: Minnesota Mining and Manufacturing CompanyInventors: Giovanni Giusto, Elio de Saraca
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Patent number: 4576907Abstract: Compounds corresponding to the following formula(MS--Het--(Ar).sub.m --NR.sup.1 --CO) .sub.n R.sup.2which are contained in a color-photographic recording material in a silver-free layer between a layer containing colloidal silver and a silver halide emulsion layer, improve the storage stability of the material.Type: GrantFiled: August 29, 1984Date of Patent: March 18, 1986Assignee: Agfa Gevaert AktiengesellschaftInventors: Helmut Kampfer, Hans Langen, Erwin Ranz
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Patent number: 4571378Abstract: Improved photographic recording materials containing at least one silver halide emulsion layer with comparatively high sensitivity and at least one silver halide emulsion layer with comparatively low sensitivity. Color couplers and DIR compounds of differing reactivities are associated with these layers.Type: GrantFiled: December 10, 1984Date of Patent: February 18, 1986Assignee: Agfa-Gevaert AktiengesellschaftInventors: Wolfgang Sauerteig, Erwin Ranz, Heinz Schutz
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Patent number: 4564588Abstract: Silver halide photographic material for radiography comprising a transparent support having a hydrophilic colloid layer coated on each side thereof said layer comprising (a) photosensitive silver halide grains, (b) silver halide grains having surfaces covered with a solubility reducing agent and which, in the absence of said solubility reducing agent, are more soluble in a material capable of dissolving silver halide than said (a), said (b) having a sensitivity to light generally less than 1/10 that of said (a), and (c) physical development nuclei, wherein the molar ratio of (a) to (b), based on the silver content of each, is between 1:0.1 to 1:0.8 on each side of said support and the total silver content of (a) and (b) is from 1 to 8 g/m.sup.2.Type: GrantFiled: February 6, 1985Date of Patent: January 14, 1986Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Eiichi Sakamoto, Mikio Kawasaki, Kouji Ono, Tomomi Yoshizawa
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Patent number: 4564587Abstract: Disclosed is a light-sensitive silver halide color photographic material comprising at least one light-sensitive layer, which is constituted of a plurality of silver halide emulsion layers having substantially the same color sensitiveness but being different in sensitivities and contains a dye image-forming coupler, provided by coating on a support, said material being constituted so as to satisfy at the same time the requirements that (a) said plurality of silver halide emulsion layers in said light-sensitive layer are provided by coating in the order from the support side a low sensitivity emulsion layer, medium sensitivity emulsion layer and high sensitivity emulsion layer, (b) a non-sensitive intermediate layer is provided by coating between said low sensitivity emulsion layer and said medium sensitivity emulsion layer, (c) the density of a dye image-forming coupler in said medium sensitivity emulsion layer is 10 to 60% of the density of a dye image forming coupler in said low sensitivity emulsion layer;Type: GrantFiled: July 10, 1984Date of Patent: January 14, 1986Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Yoshikazu Watanabe, Kenji Ito
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Patent number: 4547458Abstract: 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: GrantFiled: February 7, 1985Date of Patent: October 15, 1985Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Toshifumi Iijima, Kiyoshi Yamashita
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Patent number: 4543323Abstract: 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: GrantFiled: December 12, 1983Date of Patent: September 24, 1985Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Toshifumi Iijima, Satoshi Nakagawa, Hiroshi Menjo
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Patent number: 4539289Abstract: A silver halide light-sensitive material is disclosed. The material is comprised of a support comprising thereon at least two emulsion layers having the same color sensitivity and being different light-sensitivities, with a layer containing comparatively light-insensitive silver halide grains of 0.05 to 0.6 .mu.m in average grain size being positioned in at least one of interspaces defined by every two adjacent members of said at least two emulsion layers. The resulting material has both raised sensitivity and improved graininess.Type: GrantFiled: March 2, 1984Date of Patent: September 3, 1985Assignee: Fuji Photo Film Co., Ltd.Inventors: Tsutomu Saito, Keiji Mihayashi
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Patent number: 4526863Abstract: A silver halide photographic light-sensitive material comprising a support having thereon at least two light-sensitive silver halide emulsion layers which are sensitive to light of substantially the same spectral region and a relatively light-insensitive layer containing silver halide, zinc oxide or titanium oxide positioned between the two light-sensitive silver halide emulsion layers and at least one of the two light-sensitive silver halide emulsion layers containing a compound represented by the following general formula (I):A--B (I)wherein A represents a residue of a compound capable of coupling with the oxidation product of an aromatic primary amine developing agent by removal of a hydrogen atom from the active position of the compound, and B represents a group which is released on coupling and exhibits a fogging function in a developing solution.Type: GrantFiled: March 21, 1984Date of Patent: July 2, 1985Assignee: Fuji Photo Film Co., Ltd.Inventors: Keiji Mihayashi, Shunji Takada, Hidetoshi Kobayashi
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Patent number: 4521507Abstract: There is provided a multi-layer light-sensitive silver halide color photographic material having plural silver halide emulsion layers having respective sensitivities to light at different spectral regions on a support, wherein at least 80% of the total number of silver halide grains contained in at least one of the light-sensitive silver halide emulsion layers having sensitivities to different spectral regions, comprise silver halide grains having grain sizes greater than 0.8 .mu. and silver halide grains smaller than 0.65 .mu..The multi-layer silver halide color photographic material according to this invention exhibits improved sharpness of the color images formed.Type: GrantFiled: December 27, 1982Date of Patent: June 4, 1985Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Toshifumi Iijima, Kiyoshi Yamashita
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Patent number: 4513079Abstract: A silver halide color photographic material is disclosed. The material is comprised of a support base having provided thereon a fine grain silver halide emulsion layer and, positioned adjacent to the fine grain silver halide emulsion layer, a silver halide emulsion layer containing a coupler. The coupler is a phenolic cyan coupler substituted at the 5-position with an acylamino group and at the 2-position with an ureido group. The material has high sensitivity and good granularity. The material produces an image which has excellent fastness to light and heat.Type: GrantFiled: October 14, 1983Date of Patent: April 23, 1985Assignee: Fuji Photo Film Co., Ltd.Inventors: Kei Sakanoue, Kozo Aoki
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Patent number: 4511648Abstract: This invention presents a light-sensitive silver halide color photographic material having at least two silver halide emulsion layers having sensitivities in different spectral regions on the same side of a support, at least one layer of the layers comprising at least two silver halide emulsion layers with different sensitivities, in which each of the at least two silver halide emulsion layers with different sensitivities contains at least one kind of substantially monodispersed silver halide crystals and at least one silver halide emulsion layer of the layers comprises substantially silver iodobromide containing 4 mole % or more of silver iodide, and further the iodine content in the emulsion layer having the highest sensitivity is higher than that of the emulsion layer having a sensitivity second to the highest.Type: GrantFiled: February 24, 1983Date of Patent: April 16, 1985Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Kiyoshi Yamashita, Toshifumi Iijima
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Patent number: 4500633Abstract: A silver halide photographic material having formed on a support two or more layers that have different light sensitivities but have substantially the same color sensitivity is disclosed. In the material, the layer having the highest light sensitivity contains only a compound of formula (I) as a DIR compound and at least one of the remaining layers contains at least one compound of formula (II) as a DIR compound:A--TIME--Z (I)A--Z (II)wherein A is a coupling component capable of reaction with the oxidized product of a color developing agent to release the group TIME--Z (wherein TIME represents a timing group and Z represents a development retarder). The photographic material has improved sharpness and granularity and wide latitude for exposure.Type: GrantFiled: February 15, 1983Date of Patent: February 19, 1985Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Hiroshi Menjo, Yoshikazu Watanabe
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Patent number: 4481288Abstract: There is disclosed a light-sensitive silver halide photographic material having at least one silver halide emulsion layer constituted of a plural number of layers which are substantially the same in color to which they are sensitive but different in sensitivity provided on a support, which comprises a layer having the highest sensitivity among the plural number of layers with different sensitivities which contains at least two kinds of substantially mono-dispersed silver halide grains with different average grain sizes.The light-sensitive silver halide photographic material according to this invention is high in sensitivity and excellent in graininess of dye image.Type: GrantFiled: October 14, 1983Date of Patent: November 6, 1984Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Yoshitaka Yamada, Toshifumi Iijima, Toshihiko Yagi, Yoshihiro Haga, Kenji Kumashiro, Hiroshi Menjo
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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: 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: 4461826Abstract: There is disclosed a silver halide light-sensitive color photographic material which comprises a support and coated thereon a light-sensitive layer containing a compound which, upon reaction with an oxidized color developing agent, is capable of releasing a diffusible development inhibitor and a negative type light-sensitive silver halide emulsion containing light-sensitive silver halide crystals essentially consisting of mono-dispersed silver halide crystals of which size distribution satisfies the following relation:S/r.ltoreq.0.15whereinS=.sqroot..SIGMA.(r-r.sub.i).sup.2 n.sub.i.sup.2 /.SIGMA.n.sub.i andr=.SIGMA.n.sub.i r.sub.i /.SIGMA.n.sub.i in which r.sub.i represents the crystal size of individual silver halide crystals and n.sub.i represents the number of crystals.The light-sensitive color photographic material of the present invention provides an image of remarkably improved sharpness.Type: GrantFiled: July 12, 1982Date of Patent: July 24, 1984Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Kiyoshi Yamashita, Toshifumi Iijima
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Patent number: 4459351Abstract: A redox release compound that is capable upon oxidation of releasing a silver ion complexing heterocyclic thio moiety enables reduction of the concentration of silver required in a photographic silver halide material comprising a combination of (i) photographic silver halide capable of forming a surface latent image, and (ii) a photographic silver halide capable of forming an internal latent image. The silver halide capable of forming an internal latent image preferably has lower photosensitivity than the silver halide capable of forming a surface latent image. The redox release compound preferably comprises a silver ion complexing 1,2,4-triazolium-3-thio moiety. An image is developed in such an exposed photographic silver halide element by means of a surface type silver halide developer.Type: GrantFiled: June 22, 1983Date of Patent: July 10, 1984Assignee: Eastman Kodak CompanyInventors: Anthony Adin, Henry W. Altland
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Patent number: 4446226Abstract: A light-sensitive color photographic material having a support and, coated thereon, at least two light-sensitive silver halide emulsion layers respectively sensitive to lights of different spectral regions, characterized in that each of the light-sensitive emulsion layers comprises at least two emulsion layers having different light-sensitivities and containing negative type light-sensitive silver halide crystals essentially consisting of silver iodobromide containing silver iodide at a proportion not higher than 4 mole %.This invention provides a silver halide color photographic material, in which the proportion of the silver halide utilized for the information of a color image to the total silver halide used is enhanced remarkably.Type: GrantFiled: July 12, 1982Date of Patent: May 1, 1984Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Kiyoshi Yamashita, Toshifumi Iijima
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Patent number: 4438194Abstract: A silver halide color photographic photosensitive material comprising a base having thereon a non-photosensitive intermediate layer sandwiched between a high-sensitive silver halide emulsion layer and a low-sensitive silver halide emulsion layer both having a nondiffusion coupler that forms substantially the same color and having photosensitivity in substantially the same spectral region is disclosed. Said non-photosensitive intermediate layer has incorporated therein with a nondiffusion coupler that forms substantially the same color as that formed by the nondiffusion coupler contained in said high-sensitive emulsion layer and whose coupling speed is not greater than that of the nondiffusion coupler contained in said high-sensitive silver halide emulsion layer.Type: GrantFiled: March 19, 1982Date of Patent: March 20, 1984Assignee: Konishiroku Photo Industry Co., Ltd.Inventor: Fumio Hamada
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Patent number: 4427763Abstract: A color photographic recording material, in which a precursor compound for a yellow mask coupler is contained in a green-sensitive layer or in a layer adjacent thereto and in which a blue-sensitive layer is arranged between this layer and the layer support, permits very good sharpness with satisfactory speed.Type: GrantFiled: August 30, 1982Date of Patent: January 24, 1984Assignee: Agfa-Gevaert AktiengesellschaftInventors: Joachim W. Lohmann, Gunter Renner, Wolfgang Sauerteig
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Patent number: 4423142Abstract: Photographic material and process suitable for producing by diffusion transfer a color image and comprising on a support at least two differently spectrally sensitive negative working silver halide emulsion layers (FIG. 3, layers 12, 14 and 16) and having operatively associated with each of said emulsion layers a different non-diffusing dye providing compound that is initially immobile in an alkali-permeable colloid medium and wherefrom by reduction in alkaline medium a dye or dye precursor can be split off in diffusible state, wherein at least one of said negative working silver halide emulsion layers is associated in water-permeable relationship with a visible light-sensitive direct-positive emulsion layer (FIG. 3, layers 13 and 15) whereby interimage effects can be obtained.Type: GrantFiled: February 18, 1982Date of Patent: December 27, 1983Assignee: AGFA-Gevaert, N.V.Inventor: Wilhelmus Janssens
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Patent number: 4414308Abstract: In a silver halide color photographic photosensitive material, having a red, a green and a blue light-sensitive emulsion layer on a support, each emulsion containing a nondiffusible image forming coupler, improvement is attained by providing a layer structure in which at least one of the red, the green and the blue light-sensitive emulsion layer is separated into a high sensitivity silver halide emulsion layer and a low sensitivity silver halide emulsion layer, both layers having photosensitive regions in substantially the same spectral region, by an intermediate layer and incorporating at least one kind of DIR compounds represented by formula (I) defined in the specification in at least one layer of the high sensitivity silver halide emulsion layer, the low sensitivity silver halide emulsion and the intermediate layer.Type: GrantFiled: March 16, 1982Date of Patent: November 8, 1983Assignee: Konishiroku Photo Industry Co., Ltd.Inventor: Fumio Hamada
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Patent number: 4409321Abstract: A method for reproducing a color image. A dye image is formed on a photographic light-sensitive material by imagewisely exposing the material and processing to form a dye image. Through the imaged photographic light-sensitive material, an exposure is made on a photographic printing light-sensitive material which is processed in an alkaline activator solution to form a dye image thereon. The photographic light-sensitive material contains a transparent support provided thereon with red-sensitive, green-sensitive, and blue-sensitive silver halide emulsion layers. The layers each contain one of three different nondiffusible couplers capable of forming, by coupling, compounds having spectral absorption maximum wavelength in the wavelength region longer than 340 nm. The spectral absorption maximum wavelength of the compounds differ by at least 30 nm.Type: GrantFiled: January 22, 1982Date of Patent: October 11, 1983Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Kaoru Onodera, Toshifumi Iijima, Wataru Fujimastu
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Patent number: 4388401Abstract: A multilayer color reversal light-sensitive material is described, which can provide dye images having improved sharpness and graininess without a drop in color reproducibility, by employing a specific arrangement and construction of emulsion layers in its multi-layer structure, viz., a material comprising a support, a yellow filter layer, a group of green-sensitive emulsion layers, and a group of red-sensitive emulsion layers, wherein said emulsion layer groups are positioned nearer to the support than the yellow filter layer, each of the emulsion layer groups comprises at least two adjacent layers including a high-sensitivity silver halide emulsion layer containing silver halide grains having an average size of from 0.6.mu. to 2.0.mu. and a low-sensitivity silver halide emulsion layer containing silver halide grains having an average grain size of from 0.1.mu. to 0.5.mu.Type: GrantFiled: December 29, 1981Date of Patent: June 14, 1983Assignee: Fuji Photo Film Co., Ltd.Inventors: Kazunori Hasebe, Yoshisato Minagawa
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Patent number: 4370410Abstract: A silver halide color material comprising red, green and blue photosensitive silver halide emulsion layers, each of which contains a coupler, and in which said green photosensitive layer is composed of at least two layers and between those of which said red photosensitive layer is arranged, and said green photosensitive layer contains an anti-diffusive yellow coupler.Type: GrantFiled: December 23, 1981Date of Patent: January 25, 1983Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Toshifumi Iijima, Wataru Fujimatsu, Kaoru Onodera
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Patent number: 4359280Abstract: A color photographic imaging process and system uses a photographic film and/or printing paper wherein blue, green and red light is radiated on corresponding yellow, magenta and cyan dyes to obtain an image and the peak transmittances of the blue, green and red light are modulated to vary the resulting contrast of the color image.Type: GrantFiled: July 28, 1980Date of Patent: November 16, 1982Inventor: Peter Krause
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Patent number: 4348474Abstract: A photographic recording material having at least 2 panchromatically sensitized silver-halide emulsion layers differing in speed, a DIR-compound and at least 2 yellow couplers of differing coupling velocity provides an improved graininess.Type: GrantFiled: July 23, 1981Date of Patent: September 7, 1982Assignee: Agfa-Gevaert AktiengesellschaftInventors: Rainer Scheerer, Erwin Ranz, Joachim W. Lohmann
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Patent number: 4332885Abstract: Photographic sensitive materials for a color-diffusion transfer process which are particularly useful in a wide variety of temperature and climate conditions are disclosed. The materials are comprised of a red-sensitive emulsion layer; a green-sensitive emulsion layer; and a blue-sensitive emulsion layer on a support wherein at least one of the layers is comprised of a plurality of additional layers. Two or more of the additional layers are direct reversal photographic emulsion layers of higher and lower sensitivity which are not previously fogged. The emulsion layer having lower sensitivity has a gradation of 1.8 or more resulting in a hard tone.Type: GrantFiled: April 7, 1981Date of Patent: June 1, 1982Assignee: Fuji Photo Film Co., Ltd.Inventor: Hideki Ohmatsu
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Patent number: 4332881Abstract: The problem of reliably adhering resists to underlying surfaces made of, for example, phosphorus-doped silicon dioxide or silicon nitride is a particularly difficult one. In practice, the use of standard adhesion promoters such as HMDS provides only marginal relief. By baking a relatively thin layer of resist on the underlying layer, a tenacious bond between the thin layer and the underlying surface is achieved. Subsequently, a relatively thick layer of resist is applied and patterned in a standard way. An excellent bond between the thick and thin resist layers results. Subsequent processing of the patterned thick layer leaves the two noted bonded interfaces virtually intact.Type: GrantFiled: July 28, 1980Date of Patent: June 1, 1982Assignee: Bell Telephone Laboratories, IncorporatedInventor: Theodore A. Shankoff
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Patent number: 4323635Abstract: A color photographic material suitable for processing with an alkaline solution in the presence of a developing agent is described, comprising a support and, in sequence, the following five layers:(1) a first emulsion layer containing an internal latent image forming direct reversal silver halide emulsion that is selectively sensitive to light in a first spectral region;(2) a first color material layer containing a ballasted dye releasing redox compound that provides a dye image that selectively absorbs light in the first spectral region;(3) an intermediate layer containing a ballasted reducing agent that captures an oxidized developing agent or electron transfer agent;(4) a second emulsion layer containing an internal latent image forming direct reversal silver halide emulsion that is selectively sensitive to light in a second spectral region; and(5) a second color material layer containing a ballasted dye releasing redox compound that provides a dye image that selectively absorbs light in the second spectraType: GrantFiled: November 6, 1980Date of Patent: April 6, 1982Assignee: Fuji Photo Film Co., Ltd.Inventor: Yasushi Oishi
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Patent number: 4267264Abstract: A high sensitivity color photographic recording medium has at least two red sensitive component silver halide emulsion layer and at least three green sensitive component silver halide emulsion layers, the sensitivity of layers of the same spectral sensitivity increasing in the direction from the layer support upwards and the more sensitive red-sensitive silver halide emulsion being located between two of the green-sensitive silver halide emulsion layers.Type: GrantFiled: January 28, 1980Date of Patent: May 12, 1981Assignee: AGFA-Gevaert, A.G.Inventors: Joachim W. Lohmann, Otto Lapp, Erwin Ranz
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Patent number: 4258117Abstract: A method is disclosed of photographically processing a negative-working imagewise exposed silver halide photographic element to produce a reversal dye image comprising (a) developing the imagewise exposed silver halide with an electron transfer agent to produce oxidized electron transfer agent which reacts with a competing oxidizable substance and (b) developing silver halide remaining with the electron transfer agent in the presence of a dye image providing compound capable, after the competing oxidizable substance has been depleted, of reacting with the oxidized electron transfer agent to produce a reversal dye image. Image transfer film units are disclosed useful in the practice of this method. Such film units include those containing in addition to the competing oxidizable substance and initially immobile dye image providing compound a layer containing additional silver halide and a scavenger separating the additional silver halide from the immobile dye image providing compound.Type: GrantFiled: November 1, 1979Date of Patent: March 24, 1981Assignee: Eastman Kodak CompanyInventors: John Morgan, Peter D. Marsden
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Patent number: 4212936Abstract: A photographic element having at least two silver halide emulsion layers, one layer containing a colorless cyan-forming coupler which produces a negative image and the other layer containing a colored coupler which upon color development with a p-phenylene diamine developer produces a positive dye image of contrasting color to cyan, will produce a color contrast radiographic picture after exposure and development.Type: GrantFiled: November 25, 1977Date of Patent: July 15, 1980Assignee: Minnesota Mining and Manufacturing CompanyInventor: Claudio Giampieri
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Patent number: 4186016Abstract: In a color photographic material comprising a plurality of light-sensitive and non light-sensitive layers including at least two red sensitive coupler-containing silver halide emulsion layers of different speed, at least two green sensitive coupler-containing silver halide emulsion layers of different speed and a blue sensitive coupler-containing silver halide emulsion layer as well as a yellow filter layer located closer to the support than the blue sensitive silver halide emulsion layer but further removed from the support than any of the red sensitive or green sensitive layers, the sensitivity of the cyan partial image is significantly improved if the more sensitive red sensitive together with the more sensitive green sensitive silver halide emulsion layer forms a comparatively more sensitive emulsion layer unit which is located further removed from the support than a corresponding comparatively less sensitive emulsion layer unit formed by the less sensitive green sensitive and the less sensitive red sensiType: GrantFiled: May 17, 1977Date of Patent: January 29, 1980Assignee: Agfa-Gevaert AktiengesellschaftInventors: Joachim W. Lohmann, Otto Lapp, Immo Boie
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Patent number: 4186011Abstract: In a color photographic material in which at least one of the partial images yellow, magenta and cyan is produced in a double layer consisting of a first layer of lower sensitivity and a second layer of higher sensitivity and arranged further away from the layer support than said first layer, at least one color unit, preferably the blue-sensitive and/or the green sensitive color unit consists of at least three layers.(a) a first silver halide emulsion layer of low sensitivity containing a color coupler(b) a second silver halide emulsion layer which may contain a color coupler, and(c) a third layer which is free from silver halide, but contains a color coupler,the coupler in said layers a, b and c forming on color development dyes of substantially the same color which is complementary to that of the light to which the layers are sensitive.Type: GrantFiled: November 2, 1977Date of Patent: January 29, 1980Assignee: Agfa-Gevaert AktiengesellachaftInventors: Joachim W. Lohmann, Erwin Ranz, Martin Kupper