Patents by Inventor Shinichi Tochihara
Shinichi Tochihara 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: 5733637Abstract: A recording medium has an ink receiving layer provided on a substrate and containing (A) polyvinyl acetal resin and (B) alumina hydrate at a ratio A/B within the range of 50/1 to 6/4.Type: GrantFiled: July 17, 1996Date of Patent: March 31, 1998Assignee: Canon Kabushiki KaishaInventors: Kenichi Moriya, Shinichi Tochihara, Masato Katayama, Masahiko Higuma, Yuko Nishioka
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Patent number: 5733363Abstract: Disclosed herein is a dye represented by any one of the following general formulae ##STR1## wherein D is a chromophore, R is a bivalent or trivalent linking group, M is a tetravalent linking group, and IM is a secondary or tertiary amine residue substituted by at least one radical selected from the group consisting of alkyl groups, a carboxyl group, salts of the carboxyl group, a sulfonic group, salts of the sulfonic group, a phosphoric group and salts of the phosphoric group, with the proviso that D, R, M and IM have 1 to 12 acid groups in total.Type: GrantFiled: February 22, 1995Date of Patent: March 31, 1998Assignee: Canon Kabushiki KaishaInventors: Akira Nagashima, Shinichi Tochihara, Hiromichi Noguchi
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Patent number: 5485188Abstract: An ink jet color recording method for forming a color image on a recording member by using an ink set that includes at least four color inks: yellow, magenta and cyan inks each containing an anion dyestuff and a nonionic surfactant, and a color ink containing a cation dyestuff and capable of developing a black color when mixed with at least one of the yellow, magenta and cyan inks. The amount of the nonionic surfactant in each of the yellow, magenta and cyan inks is 0.5 to 20% by weight based on the total amount of the ink. An ink jet recording apparatus having head portions corresponding to these inks is used to jet droplets of each ink.Type: GrantFiled: December 15, 1993Date of Patent: January 16, 1996Assignee: Canon Kabushiki KaishaInventors: Shinichi Tochihara, Shinichi Sato
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Patent number: 5482545Abstract: Disclosed herein is an ink comprising a dye having at least one anionic group, an amino acid type polyamine or a polyethyleneimine containing at least 7 nitrogen atoms in its molecule, and water, wherein the dye is either a metallized azo dye or a nonmetallized azo dye satisfying the following conditions (x) and (y) at the same time:(x) no anionic group is situated at an ortho position to the azo bond, and at least one anionic group exists at another position than the ortho position to the azo bond; and(y) at least one aromatic residue is bonded to the azo bond, and the aromatic ring of the aromatic residue is a benzene or naphthalene ring, with the proviso that the aromatic rings situated on both sides of the azo bond are not naphthalene rings at the same time if present.Type: GrantFiled: December 23, 1994Date of Patent: January 9, 1996Assignee: Canon Kabushiki KaishaInventors: Makoto Aoki, Yoshifumi Hattori, Mayumi Yamamoto, Shinichi Tochihara, Yoshihisa Takizawa, Akira Nagashima, Shinichi Sato
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Patent number: 5478383Abstract: Disclosed herein is an ink comprising a coloring material and a liquid medium dissolving or dispersing the coloring material therein, wherein the ink contains in combination a compound of the general formula ##STR1## wherein R.sub.1 denotes hydrogen, a nitro group or an amino group, and R.sub.2 denotes a carboxyl group, a sulfonic group, a phosphoric group or a salt thereof, and at least one compound selected from the group consisting of primary to tertiary amines, derivatives thereof, and complexes thereof.Type: GrantFiled: October 12, 1994Date of Patent: December 26, 1995Assignee: Canon Kabushiki KaishaInventors: Akira Nagashima, Shinichi Tochihara
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Patent number: 5476541Abstract: An ink containing dyes and a liquid medium for dissolving or dispersing the dyes, the dyes including a first dye selected from the group consisting of C. I. Direct Blue #199 and C. I. Acid Blue #9 and a second dye selected from the group consisting of C. I. Acid Red #52 and the compounds represented by general formula (1): ##STR1## where Y is selected from the group consisting of a hydrogen atom, a methyl group, a methoxy group, an acetylamino group, and a nitro group, and Y may form a benzene ring together with the carbon atom at the 3 position of the benzene ring B; X is selected from the group consisting of an acetyl group, a benzoyl group, a p-toluenesulfonyl group, and 4-chloro-6-hydroxy-1,3,5-triazine-2-yl group; and M1, M2 and M3 are bases each selected from the group consisting of alkali metals and ammonium.Type: GrantFiled: September 7, 1993Date of Patent: December 19, 1995Assignee: Canon Kabushiki KaishaInventor: Shinichi Tochihara
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Patent number: 5415686Abstract: Disclosed herein is an ink comprising a recording agent and a liquid medium dispersing or dissolving the recording agent therein, wherein a finely particulate cellulose derivative is dispersed in the ink.Type: GrantFiled: April 5, 1994Date of Patent: May 16, 1995Assignee: Canon Kabushiki KaishaInventors: Yutaka Kurabayashi, Mayumi Yamamoto, Shinichi Tochihara, Shinichi Sato
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Patent number: 5409529Abstract: Disclosed herein is an ink comprising at least a coloring material and a liquid medium dissolving or dispersing the coloring material therein, wherein the viscosity of the ink reaches a maximum peak in a pH range of from 4 to 10.Type: GrantFiled: August 30, 1993Date of Patent: April 25, 1995Assignee: Canon Kabushiki KaishaInventors: Akira Nagashima, Tokuya Ohta, Shinichi Tochihara, Hiromichi Noguchi
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Patent number: 5395434Abstract: Provided is an ink for ink-jet recording, comprising a dye, water, and the components (a), (b), and (c) below:(a) at least one surfactant selected from the group consisting of higher alcohol-ethylene oxide adducts represented by General Formula [1], alkylphenol-ethylene oxide adducts represented by General Formula [2], ethylene oxide-propylene oxide copolymers represented by General Formula [3], and acetylene glycol-ethylene oxide adducts represented by General Formula [4], at a content of from 0.1 to 20% by weight;R--O--(CH.sub.2 CH.sub.2 O).sub.n --H 1where R is alkyl, and n is an integer; ##STR1## where R is alkyl, and n is an integer; ##STR2## where R is alkyl or hydrogen, and n and l are respectively an integer; ##STR3## where m and n are respectively an integer; (b) thiodiglycol; and(c) urea or a derivative thereof.Type: GrantFiled: July 7, 1993Date of Patent: March 7, 1995Assignee: Canon Kabushiki KaishaInventors: Shinichi Tochihara, Hitoshi Sugimoto, Shinichi Sato, Fumihiro Gotoh, Masaya Uetuki
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Patent number: 5296022Abstract: An ink-jet method and apparatus employing an ink comprising a dye and a liquid medium for dissolving or dispersing a dye, wherein the liquid medium comprises an alkyl alcohol having 2 to 4 carbon atoms, in which at least one of the hydrogen atoms is substituted by a halogen atom.Type: GrantFiled: June 22, 1993Date of Patent: March 22, 1994Assignee: Canon Kabushiki KaishaInventors: Masatsune Kobayashi, Shoji Koike, Shinichi Tochihara, Kyoko Fukushima, Akira Nagashima, Koromo Shirota, Kumiko Mafune
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Patent number: 5258066Abstract: An ink comprising a dye and a liquid medium for dissolving or dispersing a dye, wherein the liquid medium comprises an alkyl alcohol having 2 to 4 carbon atoms, in which at least one of the hydrogen atoms is substituted by a halogen atom.Type: GrantFiled: November 12, 1991Date of Patent: November 2, 1993Assignee: Canon Kabushiki KaishaInventors: Masatsune Kobayashi, Shohji Koike, Shinichi Tochihara, Kyoko Fukushima, Akira Nagashima, Koromo Shirota, Kumiko Mafune
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Patent number: 5256194Abstract: A recording liquid containing a dye, glycerine, an aliphatic monohydric alcohol and water. The dye is a mixture of C.I. Food Black 2 and at least one compound selected from compounds which are represented by the following general formulas [I] and [II]: ##STR1## [where Q1 is a phenyl group or a naphthyl group which are substituted by a lower alkyl carbonylamino group and a lower alkoxy group or a naphthyl group substituted by a SO.sub.3 M group, Q2 is a naphthyl group substituted by a SO.sub.3 M group or a phenyl group substituted by a lower alkoxy group, Q3 is a phenyl group, a naphthyl group, or a phenyl group or a naphthyl group which are substituted by a SO.sub.3 M group, R.sub.1 and R.sub.2 are each a lower alkyl group, a lower alkoxy group or a lower alkyl carbonylamino group, R.sub.3 is a hydrogen or a phenyl group substituted by a SO.sub.3 M group, n is 0 or 1, and M is an alkaline metal or an ammonium cation.Type: GrantFiled: September 2, 1992Date of Patent: October 26, 1993Assignee: Canon Kabushiki KaishaInventors: Osamu Nishiwaki, Kazuo Iwata, Shinichi Tochihara, Hitoshi Sugimoto
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Patent number: 5213613Abstract: Disclosed herein is an ink comprising a recording agent and a liquid medium dissolving or dispersing the recording agent therein, wherein the ink contains an imide compound and at least one compound selected from the group consisting of urea, thiourea and derivatives thereof, and volatile alkaline compounds.Type: GrantFiled: September 23, 1992Date of Patent: May 25, 1993Assignee: Canon Kabushiki KaishaInventors: Akira Nagashima, Shinichi Tochihara, Osamu Nishiwaki, Kumiko Mafune
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Patent number: 5182579Abstract: An ink tank having an ink storing portion encases an ink-absorbent member for holding ink. The ink-absorbent member comprises a porous material having therein compressed open cells. The compression ratio r.sub.1 of an apparent volume V.sub.1 before compression to an apparent volume V.sub.2 after compression (r.sub.1 =V.sub.1 /V.sub.2) and the cell number p represented by number of cells per inch in the state of V.sub.1 satisfy the relation (I) below, and p being not more than 60.100 [inch.sup.-1 ].ltoreq.r.sub.1 .multidot.p.ltoreq.200 [inch.sup.Type: GrantFiled: July 10, 1991Date of Patent: January 26, 1993Assignee: Canon Kabushiki KaishaInventors: Masahiro Haruta, Masami Ikeda, Seiichiro Karita, Nobuyuki Kuwabara, Takahisa Kawamura, Masahiko Higuma, Teruo Arashima, Tsutomu Abe, Osamu Nishiwaki, Shinichi Tochihara, Akira Nagashima, Makoto Aoki, Kumiko Mafune
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Patent number: 5148186Abstract: An ink jet recording method is disclosed by which, the temperature of the ink droplet discharged from the discharge opening by a discharge signal becomes 60.degree. C. or higher at the printing position of a recording medium, and the volume of the ink droplet when discharged is no greater than 40 pl.Type: GrantFiled: May 8, 1991Date of Patent: September 15, 1992Assignee: Canon Kabushiki KaishaInventors: Shinichi Tochihara, Osamu Nishiwaki, Kazuo Iwata
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Patent number: 5137570Abstract: A recording liquid containing a dye, glycerine, an aliphatic monohydric alcohol and water. The dye is a mixture of C.I. Food Black 2 and at least one compound selected from compounds which are represented by the following general formulas [I] and [II]: ##STR1## where Q1 is a phenyl group or a naphthyl group which are substituted by a lower alkyl carbonylamino group and a lower alkoxy group or a naphthyl group substituted by a SO.sub.3 M group, Q2 is a naphthyl group substituted by a SO.sub.3 M group or a phenyl group substituted by a lower alkoxy group, Q3 is a phenyl group, a naphthyl group, or a phenyl group or a naphthyl group which are substituted by a SO.sub.3 M group, R.sub.1 and R.sub.2 are each a lower alkyl group, a lower alkoxy group or a lower alkyl carbonylamino group, R.sub.3 is a hydrogen or a phenyl group substituted by a SO.sub.3 M group, n is 0 or 1, and M is an alkaline metal or an ammonium cation.Type: GrantFiled: August 2, 1991Date of Patent: August 11, 1992Assignee: Canon Kabushiki KaishaInventors: Osamu Nishiwaki, Kazuo Iwata, Shinichi Tochihara, Hitoshi Sugimoto
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Patent number: 5135571Abstract: A recording liquid, comprising a recording agent which is a component that forms a recorded image and a liquid medium in which said recording agent is dissolved or dispersed, wherein said recording agent comprises a dye represented by the Formula (A) ##STR1## wherein R.sub.1 and R.sub.2 are selected from the group consisting of a hydrogen atom, a methyl group, a methoxy group, a chloro group, a sulfonic acid group; X represents a residual group of an organic acid; and M represents a base selected from the group consisting of an alkali metal group, an ammonium group, and an organic amine group and at least one dye selected from the group consisting of C.I. Acid Red 131, C.I. Acid Red 274, C.I. Direct Red 227 and C.I. Direct Red 9.Type: GrantFiled: October 30, 1990Date of Patent: August 4, 1992Assignee: Canon Kabushiki KaishaInventors: Katsuhiro Shirota, Osamu Nishiwaki, Kazuo Iwata, Shinichi Tochihara
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Patent number: 5132700Abstract: An ink-jet recording process and apparatus employing ink that includes a recording agent and a liquid medium capable of dissolving or dispersing the recording agent, wherein said ink contains both a compound represented by the following Formula (I) and a compound represented by the following Formula (II): ##STR1## wherein R.sub.1, R.sub.2 and R.sub.3 each represent an alkyl group or a hydroxyalkyl group, and any one of them may represent a hydrogen atom; X.sup.- represents an inorganic acid ion; R.sub.4 and R.sub.5 each represent a group selected from a hydrogen atom, an alkyl group and a hydroxyalkyl group; and R.sub.6 represents a group selected from a carboxyl group, a hydroxyl group, a sulfone group, an alkyl group and a hydrogen atom. The ink is suitably used in the ink-jet recording.Type: GrantFiled: October 1, 1991Date of Patent: July 21, 1992Assignee: Canon Kabushiki KaishaInventors: Shinichi Tochihara, Makoto Aoki, Kumiko Mafune, Osamu Nishiwaki, Kenji Aono, Akira Nagashima
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Patent number: 5131949Abstract: An ink that includes a recording agent and a liquid medium capable of dissolving or dispersing the recording agent. The ink contains a compound represented by the following Formula (I):R.sub.1 --CONH--R.sub.2 (I)wherein R.sub.1 represents an alkyl group or aryl group unsubstituted or substituted with a group selected from a hydroxyl group, a carboxyl group, a sulfone group, an amino group and an acetylamino group; and R.sub.2 represents a hydrogen atom, an amide group, an aminoalkyl group, an aliphatic carboxylic acid residual group, or an aryl group unsubstituted or substituted with a group selected from a hydroxyl group, a carboxyl group, a sulfone group, an amino group and an acetylamino group; provided that R.sub.1 represents the unsubstituted or substituted aryl group when R.sub.2 is a hydrogen atom. The ink is suitably used in ink-jet recording.Type: GrantFiled: February 6, 1991Date of Patent: July 21, 1992Assignee: Canon Kabushiki KaishaInventors: Shinichi Tochihara, Makoto Aoki, Kumiko Mafune, Akira Nagashima, Kenji Aono, Osamu Nishiwaki
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Patent number: 5125969Abstract: A recording liquid containing a dye, glycerine, an aliphatic monohydric alcohol and water. The dye is a mixture of C.I. Food Black 2 and at least one compound selected from compounds which are represented by the following general formulas [I] and [II]: ##STR1## where Q1 is a phenyl group or a naphthyl group which are substituted by a lower alkyl carbonylamino group and a lower alkoxy group or a naphthyl group substituted by a SO.sub.3 M group, Q2 is a naphthyl group substituted by a SO.sub.3 M group or a phenyl group substituted by a lower alkoxy group, Q3 is a phenyl group, a naphthyl group, or a phenyl group or a naphthyl group which are substituted by a SO.sub.3 M group, R.sub.1 and R.sub.2 are each a lower alkyl group, a lower alkoxy group or a lower alkyl carbonylamino group, R.sub.3 is a hydrogen or a phenyl group substituted by a SO.sub.3 M group, n is 0 or 1, and M is an alkaline metal or an ammonium cation.Type: GrantFiled: January 17, 1990Date of Patent: June 30, 1992Assignee: Canon Kabushiki KaishaInventors: Osamu Nishiwaki, Kazuo Iwata, Shinichi Tochihara, Hitoshi Sugimoto