Patents by Inventor Hiroshi Takimoto
Hiroshi Takimoto 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: 5542969Abstract: A recording liquid containing carbon black dispersed in an aqueous medium, wherein the volume ratio of carbon black having a particle size of at least 0.2 .mu.m to the total carbon black is at least 50% by volume, and the volume ratio of carbon black having a particle size of at least 0.6 .mu.m to the total carbon black is at most 20% by volume.Type: GrantFiled: September 26, 1995Date of Patent: August 6, 1996Assignee: Mitsubishi Chemical CorporationInventors: Takashi Hirasa, Hiroshi Takimoto, Nobutake Mise
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Patent number: 5542970Abstract: A monoazo compound of the general formula ##STR1## wherein; Y is hydrogen, methyl, methoxy, acetylamino, or nitro, or Y, cojointly with the carbon atom located in the benzene ring B at the 3-position with respect to the N.dbd.N group, may form a benzene ring; X is acetyl, benzoyl, p-toluenesulfonyl, or 4-chloro-6-hydroxy-1,3,5-triazine-2-yl; and M.sup.1, M.sup.2 and M.sup.3 each are a base selected from alkali metal atom, ammonium cation and amine salt cation. A recording liquid comprising a coloring matter, which is an image-forming component, and a liquid medium for dissolving or dispersing the coloring matter, said recording liquid being characterized by containing as coloring matter the above-mentioned monoazo compound.Type: GrantFiled: June 6, 1995Date of Patent: August 6, 1996Assignees: Canon Kabushiki Kaisha, Mitsubishi Chemical CorporationInventors: Konoe Miura, Hiroshi Takimoto, Tokuya Ohta, Masatsune Kobayashi
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Patent number: 5480478Abstract: A recording liquid comprising an aqueous medium and at least one dye selected from dyes, a free acid form of which is represented by formula (I), (II), (III) or (VI), the symbols in the formulae being defined in the specification: ##STR1##Type: GrantFiled: November 29, 1994Date of Patent: January 2, 1996Assignee: Mitsubishi Chemical CorporationInventors: Hideo Sano, Yukichi Murata, Toru Nishimura, Masahiro Yamada, Hiroshi Takimoto, Nobuyoshi Satoh
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Patent number: 5478384Abstract: A recording liquid excellent in print quality, light resistance, and water resistance which is characterized in that it contains an aqueous medium and at least one dye selected from the dyes represented by general formulae [I] to [V]: ##STR1## (wherein R.sub.1 and R.sub.2 each represents H, CH.sub.3, or OCH.sub.3 ; R.sub.3 represents H, Cl,CH.sub.3, or OCH.sub.3 ; R.sub.4 represents an alkyl group having 1 to 6 carbon atoms, a phenyl group, a tolyl group, or an anisyl group; R.sub.5 represents H, a phenyl group which may be substituted with a COOM group, or an alkyl group having 1 to 3 carbon atoms which is substituted with a COOM group; R.sub.6 represents H or an alkyl group having 1 to 3 carbon atoms which is substituted with a COOM group; X represents SO.sub.3 M or COOM; Y represents --CO-- or --SO.sub.Type: GrantFiled: May 5, 1994Date of Patent: December 26, 1995Assignee: Mitsubishi Kasei CorporationInventors: Hiroshi Takimoto, Tomio Yoneyama, Hideo Sano, Yukichi Murata, Masahiro Yamada
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Patent number: 5330824Abstract: An image protecting film useful for protecting an image recorded on a porous recording medium by an ink jet recording system, which film comprises a light transmitting non-porous support and a layer composed mainly of a polyester resin formed on the support, said polyester resin being a copolymer comprising aliphatic dicarboxylic acid units, aromatic dicarboxylic acid units and aliphatic polyol units. Also disclosed is an image protecting method which comprises overlaying the above image protecting film on a porous recording medium having an image recorded thereon, so that the layer composed mainly of the polyester resin is in contact with the recording medium, followed by hot press bonding. The image protected by the image protecting film and the image protecting method of the present invention is excellent in the light resistance, the water resistance and the color development.Type: GrantFiled: September 25, 1992Date of Patent: July 19, 1994Assignee: Mitsubishi Kasei CorporationInventors: Hiroshi Takimoto, Minoru Masuda
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Patent number: 5299033Abstract: An image reading and recording apparatus such as an electronic blackboard includes a reading unit movable along a guide rail for reading information written on a board, a drive motor integral with the reading unit and operative to move the reading unit relative to the board, and a power transmission mechanism for transmitting a driving force of the drive motor to the reading unit so as to move the reading unit relatively to the board. The power transmission mechanism is composed of a pulley fixed to a drive shaft of the motor and a wire rope extending along the guide rail in a stretched condition and wound around the pulley by one turn. Upon rotation of the motor, the pulley rolls on and along the wire rope, thereby moving the reading unit relative to the board. Due to a large contact area provided between the pulley and the wire rope, the movement of the reading unit is highly reliable and hence the information on the board can be read with high accuracy.Type: GrantFiled: May 1, 1992Date of Patent: March 29, 1994Assignee: Matsushita Graphic Communication Systems, Inc.Inventors: Toshio Watanabe, Yuuichi Abe, Hiroto Morikawa, Hiroshi Takimoto
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Patent number: 5127947Abstract: A recording liquid and an ink-jet recording method in which the recording liquid is used to record an image on a recording material comprising a substrate having provided thereon an ink-receiving layer containing a silicon-containing pigment and a binder resin by means of an ink-jet recording technique are disclosed, the recording liquid containing a solvent and at least one dye represented by formula (I): ##STR1## wherein A represents a substituted or unsubstituted phenyl, or naphthyl group; B represents a substituted or unsubstituted phenylene or naphthylene group; C represents an organic group as defined in the specification.Type: GrantFiled: October 12, 1990Date of Patent: July 7, 1992Assignee: Mitsubishi Kasei CorporationInventors: Hiroshi Takimoto, Hideo Sano
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Patent number: 5125968Abstract: A recording liquid for ink jet recording, which comprises an aqueous medium, a pigment and, as a dispersant, at least one member selected from the group consisting of compounds of the following formula (I) to (X): ##STR1## wherein R.sup.1 is a C.sub.8-20 alkyl group, m is an integer of from 1 to 3, and M is Na or NH.sub.4, ##STR2## wherein R.sup.2 is a C.sub.8-20 alkyl group, n is an integer of from 1 to 3, and M is Na or NH.sub.4, ##STR3## wherein each of R.sup.3 and R.sup.4 is a C.sub.6-16 alkyl or alkenyl group, and M is Na or NH.sub.4, ##STR4## wherein R.sup.5 is a C.sub.10-20 alkyl or alkenyl group, and M is Na or NH.sub.4, ##STR5## wherein R.sup.6 is a C.sub.6-16 alkyl or alkenyl group, and M is Na or NH.sub.4, ##STR6## wherein R.sup.7 is a C.sub.10-20 alkyl or alkenyl group, and M is Na or NH.sub.4, ##STR7## wherein R.sup.8 is a C.sub.10-20 alkyl or alkenyl group, R.sup.9 is a C.sub.1-4 alkyl group and R.sup.10 is a C.sub.1-3 alkylene group, and M is Na or NH.sub.4, ##STR8## wherein R.sup.11 is a C.Type: GrantFiled: March 20, 1991Date of Patent: June 30, 1992Assignee: Mitsubishi Kasei CorporationInventors: Hiroshi Takimoto, Akira Kajikawa, Tomio Yoneyama
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Patent number: 5102731Abstract: A recording medium comprising a non-porous substrate and a coating layer formed thereon, said coating layer comprising a carboxyl group-containing ionomer-type hydrophilic urethane resin and organic and/or inorganic fine particles.Type: GrantFiled: April 25, 1989Date of Patent: April 7, 1992Assignee: Mitsubishi Kasei CorporationInventors: Hiroshi Takimoto, Tomio Yoneyama, Hideo Sano, Minoru Masuda
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Patent number: 5049188Abstract: A recording liquid comprising from 0.2 to 12% by weight, based on the total weight of the recording liquid, of a water-soluble dyestuff, from 0.5 to 25% by weight, based on the total weight of the recording liquid, of at least one member selected from the group consisting of compounds of the following formulas I, II and III, and an aqueous medium: ##STR1## wherein l is a number of from 4 to 20, ##STR2## wherein R is a lower alkyl group or a phenyl group, and each of m and n is a number of from 4 to 20, and ##STR3## wherein X is a halogen atom, and p is a number of from 4 to 20.Type: GrantFiled: May 6, 1988Date of Patent: September 17, 1991Assignee: Mitsubishi Kasei CorporationInventors: Hiroshi Takimoto, Tomio Yoneyama, Hideo Sano
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Patent number: 4841037Abstract: A naphthalene trisazo compound represented by the general formula (I) or (II): ##STR1## wherein A and B each represents a substituted or unsubstituted benzene or naphthalene ring; m represents zero or 1; and M represents an alkali metal atom, ammonium or H.Am (wherein Am represents an amine); or ##STR2## wherein X represents a hydrogen atom, a lower alkyl group, a phenyl group or a phenyl group substituted by --SO.sub.3 M; m represents zero or 1; M represents an alkali metal atom, ammonium or H.Am (wherein Am represents an amine); A, B and C each represents a substituted or an unsubstituted benzene or naphthalene ring, provided that B and C do not represent a naphthalene ring at the same time. A recording liquid containing these compounds is suitable for use in an ink-jet recording system.Type: GrantFiled: June 10, 1986Date of Patent: June 20, 1989Assignees: Canon Kabushiki Kaisha, Mitsubishi Chemical Industries LimitedInventors: Tokuya Ohta, Masatsune Kobayashi, Yuko Suga, Konoe Miura, Hiroshi Takimoto, Tomio Yoneyama
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Patent number: 4808192Abstract: In accordance with this invention an aqueous solution of a water-soluble dye containing lithium sulfonate group or ammonium sulfonate group can be obtained by a very simple and economical process in such a way that an aqueous solution of a water-soluble dye containing sodium sulfonate group is fed to a packed column packed with acid type cation exchange resin (H-form) to form an aqueous solution of a dye containing a free sulfonic acid group, and after neutralizing the resulting solution with LiOH or NH.sub.4 OH, the aqueous solution of the dye thus obtained is concentrated according to a process for separation through reverse osmotic membrane.Type: GrantFiled: September 15, 1986Date of Patent: February 28, 1989Assignee: Mitsubishi Chemical Industries LimitedInventors: Yoshihiro Narita, Hiroshi Takimoto, Hideo Sano
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Patent number: 4765838Abstract: A black recording liquid suitable for use in ink-jet recording or as an ink for writing instruments comprises at least two water-soluble dyes and a liquid medium. Each of the dyes satisfies the condition defined by the following expression [I], and a mixture of these dyes satisfies the condition defined by the following expression [II]. ##EQU1## In these expressions, a* and b* are chromaticness indices defined in the CIE 1976 (L*, a*, b*) space, i indicates the ith dye of the dyes used together, and n is an integer of 2 or more.Type: GrantFiled: August 11, 1986Date of Patent: August 23, 1988Assignees: Mitsubishi Chemical Industries Ltd., Canon Kabushiki KaishaInventors: Tokuya Ohata, Masatsune Kobayashi, Yuko Suga, Konoe Miura, Hiroshi Takimoto, Tomio Yoneyama
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Patent number: 4724001Abstract: A naphthalenedisazoic dye represented by general formula (I); ##STR1## wherein Q represents ##STR2## or a naphthalene group substituted by --SO.sub.3 M; R represents a methyl group, a methoxy group, an ethoxy group; X represents a hydrogen atom, a phenyl group substituted by --SO.sub.3 M; m represents 1 or 2; n represents 1 when X represents a hydrogen atom and n represents zero when X represents a phenyl group substituted by --SO.sub.3 M, wherein X represents a hydrogen atom and m represents 1 when Q represents a naphthalene group substituted by --SO.sub.3 M; and M represents an alkali metal atom, an ammonium, or H.A (wherein A represents an amine), and a recording liquid containing the dye. The recording liquid is suitable for use in an ink-jet recording system.Type: GrantFiled: May 7, 1986Date of Patent: February 9, 1988Assignees: Canon Kabushiki Kaisha, Mitsubishi Chemical Industries LimitedInventors: Tokuya Ohta, Masatsune Kobayashi, Yuko Suga, Konoe Miura, Hiroshi Takimoto, Tomio Yoneyama
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Patent number: 4683002Abstract: A liquid composition comprising a water-soluble dye is provided. The composition contains iron and silicon at a concentration of 9 ppm or less. A method for recording with liquid droplets formed from the liquid composition is also provided. Further, a water soluble dye for the liquid composition is provided, the dye containing iron and silicon at a total concentration of 250 ppm or less.Type: GrantFiled: November 6, 1985Date of Patent: July 28, 1987Assignee: Canon Kabushiki KaishaInventors: Konoe Mirua, Hiroshi Takimoto, Toshio Kaneko, Tokuya Ohta, Masatsune Kobayashi, Tsuyoshi Eida
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Patent number: 4667760Abstract: Several embodiments of improved braking arrangement for off the road, single rider, multiple wheeled vehicles. In each arrangement, a shaft drive is incorporated and a brake rotor is fixed for rotation with the shaft drive. A brake casing encircles the brake rotor and has at least one opening that is aligned with the rotor surface and in which a brake pad is supported by a cover that closes the opening and which is adapted to brake the rotor. In some embodiments, the brake pad is actuated mechanically and in others, it is actuated hydraulically. In some embodiments, the interior of the brake casing is vented to the air cleaner of the engine and in others, the casing is provided with pie-shaped cutouts for cooling.Type: GrantFiled: May 13, 1985Date of Patent: May 26, 1987Assignee: Yamaha Hatsudoki Kabushiki KaishaInventor: Hiroshi Takimoto
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Patent number: 4636922Abstract: A light supporting arrangement for an off the road vehicle for mounting lights in a relatively light-weight flexible fender. The fender is provided with an opening and a more rigid light supporting frame is received within the opening and is adapted to support the lights.Type: GrantFiled: July 29, 1985Date of Patent: January 13, 1987Assignee: Yamaha Hatsudoki Kabushiki KaishaInventors: Hiroshi Takimoto, Takumi Fukui
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Patent number: 4626284Abstract: The recording liquid containing at least one of the naphthelenediazoic dyes shown by general formula (I) or (II): ##STR1## as defined in the claim, and a liquid medium for dissolving or dispersing the dye.The recording liquid of this invention has the viscosity and surface tension in the proper ranges, does not cause clogging discharging orifices of an ink-jet recorder and shows good storage stability. Furthermore, the recording liquid gives recorded images excellent in fixing speed, light resistance, water resistance, abrasion resistance and resolution.Type: GrantFiled: October 1, 1984Date of Patent: December 2, 1986Assignees: Mitsubishi Chemical Industries Ltd., Canon Inc.Inventors: Tokuya Ohta, Masatsune Kobayashi, Konoe Miura, Hiroshi Takimoto