Patents by Inventor Kiyoshi Futaki
Kiyoshi Futaki has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 5198324Abstract: The present invention provides a method for making a lithographic printing plate having high sensitivity and high printing endurance by scanner-exposing which comprises subjecting a photographic photosensitive material comprising a support and, provided thereon, an unfogged internal latent image type silver halide emulsion layer to scanner-exposing, subjecting the exposed photosensitive material to non-tanning development in the presence of a nucleating agent, and then subjecting the silver halide portion of the emulsion layer to an oleophilizing treatment.Type: GrantFiled: December 5, 1989Date of Patent: March 30, 1993Assignee: Mitsubishi Paper Mills LimitedInventors: Shigeru Iguchi, Kiyoshi Futaki, Koichi Torizuka, Shozi Oka
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Patent number: 4693955Abstract: Disclosed is a light-sensitive photographic element for negative type lithographic printing plates high in sensitivity and contrast which comprises a support having thereon a light-sensitive silver halide, a metal salt particle having substantially no light-sensitivity, a compound which reacts with an oxidized developing agent produced by development to release a compond which acts as a solvent or a solution physical development accelerator for said metal salt particle and physical development nuclei.Type: GrantFiled: March 18, 1985Date of Patent: September 15, 1987Assignee: Mitsubishi Paper Mills, Ltd.Inventors: Koichi Torizuka, Kiyoshi Futaki
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Patent number: 4420554Abstract: There is disclosed a silver halide photosensitive material which contains in at least one of silver halide emulsion layers and colloid layers at least on antifoggant precursor compound represented by the general formula: ##STR1## wherein A, Z, R.sub.1 and R.sub.2 are the same as defined previously. This photosensitive material is stabilized against overdevelopment fogging.Type: GrantFiled: February 17, 1982Date of Patent: December 13, 1983Assignee: Mitsubishi Paper Mills, Ltd.Inventors: Minoru Ohashi, Kiyoshi Futaki, Katsuaki Iwaosa
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Patent number: 4416977Abstract: There is disclosed a silver halide photographic photosensitive material which contains in at least one of silver halide emulsion layers and colloid layers permeable to water through to or out from said emulsion layer at least one compound represented by the following general formula (I): ##STR1## wherein A, R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are the same as defined previously. This photosensitive material has stability against over-development fogging.Type: GrantFiled: February 16, 1982Date of Patent: November 22, 1983Assignee: Mitsubishi Paper Mills, Ltd.Inventors: Minoru Ohashi, Kiyoshi Futaki, Katsuaki Iwaosa
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Patent number: 4387149Abstract: An electrophotographic photosensitive material in which organic photoconductor is sensitized by a compound represented by the formula, ##STR1## wherein A, B, D and E represent independently a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, a phenyl group or a 5- or 6-membered heterocyclic ring residue, and at least two of them represent a phenyl group; F is an alkyl, phenyl or styryl group; m is a number of 0 or 1, and n is a number of zero, 1 or 2, provided that when m is 1, n is 0; and X.sup..crclbar. represents an anion residue, has a high sensitivity to the whole range of visible light as well as to the infrared rays of up to around 1,100 nm, and is stable in the potential characteristics such as surface potential and dark damping factor and capable of separation photographing by use of a color separation filter.Type: GrantFiled: March 4, 1982Date of Patent: June 7, 1983Assignee: Mitsubishi Paper Mills, Ltd.Inventors: Kazuhiro Emoto, Kiyoshi Futaki
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Patent number: 4134770Abstract: Compounds of the formula(CH.sub.2 .dbd. CH--SO.sub.2 --CH.sub.2 --CH.sub.2 --CO--A).sub.n P,wherein each A, which may be either the same or different, is selected from direct bond, --NH-- and --O--, P represents an n-valent aliphatic moiety which can be interrupted by a nitrogen atom or phenylene radical, and n is 3 or 4, provided that when A is direct bond the nitrogen atom interrupting said aliphatic moiety can be connected through the direct bond, can be effectively used as gelatin hardeners in gelatin-containing photographic layers. Examples of the compounds include 1,1,3,3-tetrakis(vinylsulfonylpropionamido)propane, .alpha.,.alpha.'-tetrakis(vinylsulfonylpropionamido)-p-xylene, 1,2,3-tris[.beta.-(vinylsulfonyl)propionyloxy]propane, N,N',N"-tris[.beta.-(vinylsulfonyl)propionyl]diethylenetriamine, and tetrakis[.beta.-(vinylsulfonyl)propionyloxymethyl]methane.Type: GrantFiled: September 21, 1977Date of Patent: January 16, 1979Assignee: Mitsubishi Paper Mills, Ltd.Inventors: Kazuhiro Emoto, Kenji Yabuta, Kiyoshi Yamashita, Kiyoshi Futaki
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Patent number: 4035188Abstract: Novel compounds represented by the following general formula are useful as color developing agents for color development which react with couplers to form color images: ##STR1## (wherein R.sup.1 and R.sup.2 which may be the same or different represent alkyl groups of 1 to 4 carbon atoms and R.sup.3 represents hydrogen atom or methyl group).Type: GrantFiled: March 31, 1975Date of Patent: July 12, 1977Assignee: Mitsubishi Paper Mills, Ltd.Inventors: Kenji Yabuta, Kiyoshi Yamashita, Kiyoshi Futaki
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Patent number: 4032690Abstract: Thermosensitive recording material for use in thermal printing, which is composed of a coating composition applied on a support, which coating composition comprises (a) a chromogenic compound, (b) an organic acid, (c) a water-soluble binder containing a carboxyl group and having a softening point of 200.degree. C or higher, (d) a filler, (e) a metal salt of a higher fatty acid and (f) a wax, said recording material having a Bekk surface smoothness of 100 to 500 seconds.Type: GrantFiled: January 24, 1975Date of Patent: June 28, 1977Assignee: Mitsubishi Paper Mills, Ltd.Inventors: Isao Kohmura, Yukio Tahara, Kiyoshi Futaki, Hiroshi Tange
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Patent number: 4020232Abstract: This invention discloses a heat-sensitive recording sheet which comprises a support and, coated thereon, a heat-sensitive composition containing an organic base and at least one acylated lactone or sultone type acidic leuco dye capable of forming a color by reaction with said organic base at an elevated temperature. The invention further discloses as one embodiment a multicolor heat-sensitive recording sheet prepared by adding to the above-mentioned chromogenic system a chromogenic system comprising a normally solid phenolic substance and at least one basic chromogenic substance capable of forming a color by reaction with said phenolic substance at an elevated temperature. Preferable examples of the above-mentioned leuco dye are acrylated xanthene lactone type leuco dyes.Type: GrantFiled: May 14, 1975Date of Patent: April 26, 1977Assignee: Mitsubishi Paper Mills, Ltd.Inventors: Isao Kohmura, Kiyoshi Futaki, Kozo Haino
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Patent number: 3984605Abstract: In a heat sensitive recording material comprising a support having a heat sensitive layer or layers thereon which comprise colorless or palely colored chromogenic substance and phenolic substance capable, upon heating, of causing color formation of said chromogenic substance, at least one organic amine derivatives are contained as a decolorizing agent in said heat sensitive layer or another layer adjacent to said heat sensitive layer. Using this recording material, two colors which are clearly distinguishable can be obtained.Type: GrantFiled: June 23, 1975Date of Patent: October 5, 1976Assignee: Mitsubishi Paper Mills, Ltd.Inventors: Isao Kohmura, Kiyoshi Futaki, Kohzo Haino
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Patent number: 3937864Abstract: Heat-sensitive recording sheets having an improved stability comprising a colorless or pale-colored chromogenic compound and an organic acid for coloring the chromogenic compound by heating, which are characterized by containing phenol derivatives represented by the formula ##SPC1##Wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are hereinafter defined, is disclosed.Type: GrantFiled: September 4, 1973Date of Patent: February 10, 1976Assignee: Mitsubishi Paper Mills, Ltd.Inventors: Isao Kohmura, Kiyoshi Futaki
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Patent number: 3936305Abstract: Compounds represented by the following general formula are extremely effective as ultraviolet ray-absorbing agent, especially, for color photographic photosensitive materials. ##SPC1##(wherein R.sub.1 is an alkyl group having 1 to 13, preferably 5 to 13 carbon atoms, R.sub.2 is an alkyl group having 1 to 18 carbon atoms and X is hydrogen, a halogen, an alkyl, an alkoxy, an aryloxy, an aralkyloxy or an aryl group).Type: GrantFiled: December 2, 1974Date of Patent: February 3, 1976Assignee: Mitsubishi Paper Mills, Ltd.Inventors: Shigetoshi Hiraishi, Kiyoshi Futaki, Shoichi Horii, Kiyoshi Yamashita
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Patent number: 3936309Abstract: A heat-sensitive recording composition comprising a normally colorless or pale-colored chromogenic substance, a phenolic substance capable of developing the color of said chromogenic substance at an elevated temperature, and a water-soluble binder is not water resistant, but when incorporated with a compound having 2 to 10 1,2-epoxy ring structures ##EQU1## in one molecule as a hardner for said binder, the composition is rendered highly water resistant. Further, a coating liquid containing the said composition is prevented from coloration, and a recording sheet prepared by coating the said coating liquid on a support is prevented from coloration in texture.Type: GrantFiled: July 18, 1973Date of Patent: February 3, 1976Assignee: Mitsubishi Paper Mills, Ltd.Inventors: Isao Kohmura, Kiyoshi Futaki, Yukio Tahara
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Patent number: 3932182Abstract: An organic photoconductive composition, useful as an electrophotosensitizing material consisting of an organic photoconductive compound and a compound having an active methylene, as chemical sensitizer, represented by the formula,R--COCH.sub.2 --Xor ##EQU1## wherein R is a substituted or unsubstituted phenyl, alkyl, arylamino, alkylamino, aryloxy or alkoxy; X is acyl, carbamoyl, phenyl-substituted carbamoyl or cyano; Y is carbonyl, oxygen, sulfur, ##EQU2## (wherein L is hydrogen or alkyl); Z is a residue necessary to form a 5- or 6-membered ring, and method for making the same.Type: GrantFiled: January 17, 1974Date of Patent: January 13, 1976Assignee: Mitsubishi Paper Mills, Ltd.Inventors: Kiyoshi Futaki, Hirokazu Tsukahara, Kazuhiro Emoto
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Patent number: 3932188Abstract: Irradiation and halation of a silver halide photographic lightsensitive material can be prevented by adding at least one of dyes represented by the following general formula to the layers on one or both sides of the light sensitive material. ##SPC1##(wherein X is hydrogen atom, hydroxyl group, a halogen atom or a lower alkyl group, L is a methine group which may be substituted with a lower alkyl group at mesoposition, M is hydrogen atom, an alkali metal or ammonium group and n is 1 or 2).Type: GrantFiled: February 24, 1975Date of Patent: January 13, 1976Assignee: Mitsubishi Paper Mills, Ltd.Inventors: Akira Tanaka, Kiyoshi Futaki, Bunzo Ueda