Patents by Inventor Fumiaki Fujioka
Fumiaki Fujioka 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: 10022981Abstract: An aqueous ink for ink jet containing a self-dispersible pigment, a compound represented by General Formula (I): where in General Formula (I) each R1 independently represents a hydrogen atom or an alkyl group.Type: GrantFiled: November 29, 2016Date of Patent: July 17, 2018Assignee: Canon Kabushiki KaishaInventors: Fumiaki Fujioka, Yoshihisa Yamashita, Yuko Negishi
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Patent number: 9789698Abstract: An aqueous ink set for ink jet including a combination of a first ink and a second ink. The first ink includes a self-dispersible pigment to a particle surface of which a functional group that includes a phosphonic acid group is bonded, wherein the redispersion viscosity of the first ink is 5 mPa·s or less. The second ink includes an anionic dye, a lithium ion, and a sodium ion, wherein the total concentration of the lithium ion and the sodium ion in the second ink is 0.050 mol/L or more, and the proportion of the concentration of the lithium ion in the total concentration of the lithium ion and the sodium ion in the second ink is 45% or more to 85% or less.Type: GrantFiled: November 2, 2015Date of Patent: October 17, 2017Assignee: Canon Kabushiki KaishaInventors: Soichi Nagai, Masashi Ogasawara, Fumiaki Fujioka
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Publication number: 20170183525Abstract: An aqueous ink for ink jet containing a self-dispersible pigment, a compound represented by General Formula (I): where in General Formula (I) each R1 independently represents a hydrogen atom or an alkyl group.Type: ApplicationFiled: November 29, 2016Publication date: June 29, 2017Inventors: Fumiaki Fujioka, Yoshihisa Yamashita, Yuko Negishi
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Publication number: 20160152849Abstract: An aqueous ink set for ink jet including a combination of a first ink and a second ink. The first ink contains a self-dispersible pigment to a particle surface of which a functional group containing a phosphonic acid group is bonded, wherein the redispersion viscosity of the first ink is 5 mPa·s or less. The second ink contains an anionic dye, a lithium ion and a sodium ion, wherein the total concentration of the lithium ion and the sodium ion in the second ink is 0.050 mol/L or more, and the proportion of the concentration of the lithium ion in the total concentration of the lithium ion and the sodium ion in the second ink is 45% or more and 85% or less.Type: ApplicationFiled: November 2, 2015Publication date: June 2, 2016Inventors: Soichi Nagai, Masashi Ogasawara, Fumiaki Fujioka
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Patent number: 9315683Abstract: The present invention provides an ink that can achieve image characteristics for recording an image having excellent optical density, bleeding resistance, and white blur resistance and also can achieve reliability that provides excellent sticking resistance to a recording head. The ink is one for ink jet containing a first pigment and second pigment. The first pigment is a self-dispersible pigment to a surface of a particle of which a first functional group containing a phosphonic acid group is bonded. The second pigment is a self-dispersible pigment to a surface of a particle of which a second functional group not containing a phosphonic acid group but containing an anionic group other than the phosphonic acid group, and further containing another atomic group is bonded. The introduced amount of the functional group of the second pigment is 0.25 mmol/g or more.Type: GrantFiled: May 7, 2013Date of Patent: April 19, 2016Assignee: Canon Kabushiki KaishaInventors: Souichi Nagai, Masashi Ogasawara, Keigo Gouda, Fumiaki Fujioka, Akiko Yasuda
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Patent number: 8985755Abstract: Provided is an ink for ink jet including a first pigment and a second pigment. Each of the first pigment and the second pigment comprises a self-dispersible carbon black in which a functional group containing two phosphonic acid groups is bonded to a particle surface. The average particle size of the first pigment is smaller than the average particle size of the second pigment. The introduced amount of the functional group of the first pigment is higher than the introduced amount of the functional group of the second pigment.Type: GrantFiled: June 3, 2014Date of Patent: March 24, 2015Assignee: Canon Kabushiki KaishaInventors: Fumiaki Fujioka, Masashi Ogasawara, Keigo Gouda, Souichi Nagai, Akiko Yasuda
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Patent number: 8926078Abstract: An ink containing a plurality of coloring materials having different hues, wherein the bronze value B, which is calculated from tristimulus values of reflected light, of illumination in the direction of an angle of 45 degrees to a normal to the image, in the direction of specular reflection and tristimulus values of illumination light under the same condition of the illumination by using Formula 1, with respect to a predetermined recorded image recorded by the above-described ink is 2.0 or less.Type: GrantFiled: January 27, 2011Date of Patent: January 6, 2015Assignee: Canon Kabushiki KaishaInventors: Hiromitsu Kishi, Fumiaki Fujioka, Hirofumi Ichinose, Rie Takekoshi, Takumi Kaneko, Yumi Kamimura, Kazuki Narumi, Akihiro Kakinuma
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Publication number: 20150002576Abstract: Provided is an ink for ink jet including a first pigment and a second pigment. Each of the first pigment and the second pigment comprises a self-dispersible carbon black in which a functional group containing two phosphonic acid groups is bonded to a particle surface. The average particle size of the first pigment is smaller than the average particle size of the second pigment. The introduced amount of the functional group of the first pigment is higher than the introduced amount of the functional group of the second pigment.Type: ApplicationFiled: June 3, 2014Publication date: January 1, 2015Applicant: CANON KABUSHIKI KAISHAInventors: Fumiaki Fujioka, Masashi Ogasawara, Keigo Gouda, Souichi Nagai, Akiko Yasuda
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Patent number: 8900359Abstract: An ink containing a plurality of organic pigments having hues forming an angle of 10 degrees or more with one another, wherein the bronze value B calculated by Formula 1 is 0.0 or more, and 12.0 or less, the saturation value C calculated by Formula 2 is 65.0 or more, and the 20-degree gloss value GB is 30.0 or more with respect to a predetermined recorded image recorded by the ink.Type: GrantFiled: January 27, 2011Date of Patent: December 2, 2014Assignee: Canon Kabushiki KaishaInventors: Fumiaki Fujioka, Hiromitsu Kishi
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Publication number: 20140192111Abstract: The present invention provides an ink that can achieve image characteristics for recording an image having excellent optical density, bleeding resistance, and white blur resistance and also can achieve reliability that provides excellent sticking resistance to a recording head. The ink is one for ink jet containing a first pigment and second pigment. The first pigment is a self-dispersible pigment to a surface of a particle of which a first functional group containing a phosphonic acid group is bonded. The second pigment is a self-dispersible pigment to a surface of a particle of which a second functional group not containing a phosphonic acid group but containing an anionic group other than the phosphonic acid group, and further containing another atomic group is bonded. The introduced amount of the functional group of the second pigment is 0.25 mmol/g or more.Type: ApplicationFiled: May 7, 2013Publication date: July 10, 2014Inventors: Souichi Nagai, Masashi Ogasawara, Keigo Gouda, Fumiaki Fujioka, Akiko Yasuda
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Patent number: 8491715Abstract: Disclosed herein are an ink containing a self-dispersible pigment and a salt, wherein the self-dispersible pigment is a pigment to the surface of a particle of which a functional group containing at least a group having a hydrogen bonding property and two phosphonic acid groups is bonded, counter ions of the two phosphonic acid groups containing one of K+ and NH4+; the salt is constituted by combining at least one cation of K+ and NH4+ with at least one anion selected from the group consisting of Cl?, Br?, I?, ClO?, ClO2?, ClO3?, ClO4?, NO2?, NO3?, SO42?, CO32?, HCO3?, HCOO?, (COO?)2, COOH(COO?), CH3COO?, C2H4 (COO?)2, C6H5COO?, C6H4(COO?)2, PO43?, HPO42? and H2PO4?; a cation concentration in the ink is 0.04 mol/L or more; and the viscosity of a liquid obtained by evaporating 15% by mass of the ink is less than 3.5 mPa·s at 25° C.Type: GrantFiled: July 5, 2011Date of Patent: July 23, 2013Assignee: Canon Kabushiki KaishaInventors: Keigo Gouda, Masashi Ogasawara, Tomonari Watanabe, Fumiaki Fujioka, Souichi Nagai, Akiko Yasuda
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Patent number: 8474964Abstract: An ink containing a plurality of polymers and carbon black, wherein the plurality of polymers include a polymer A having an acid value of 200 mgKOH/g or more and 300 mgKOH/g or less and a polymer B having an acid value of 80 mgKOH/g or more and 180 mgKOH/g or less, the weight average molecular weight of the polymer A is larger than the weight average molecular weight of the polymer B, the carbon black has a DBP oil absorption of 75 mL/100 g or less and a specific surface area of 200 m2/g or more, and each of -Ph-(CH2)n—NH2 and -Ph-(CH2)n—NH—R serving as a functional group is bonded to surfaces of the carbon black particles, wherein in these formulae, Ph represents a phenylene group, n represents an integer of 0 to 2, and R represents the polymer A.Type: GrantFiled: January 18, 2011Date of Patent: July 2, 2013Assignee: Canon Kabushiki KaishaInventors: Takashi Saito, Fumiaki Fujioka, Hiromitsu Kishi
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Patent number: 8475580Abstract: An ink jet ink including a self-dispersible pigment, a salt, a polyoxyethylene alkyl ether and a water-soluble organic solvent. The self-dispersible pigment is a pigment to a surface of a particle of which a functional group containing at least a phosphonic acid group is bonded, the introduced amount of the functional group bonded to the self-dispersible pigment is 0.10 to 0.33 mmol/g. The salt is constituted by combining a specific cation with a specific anion. The value (Concentration of anion)×(Valence number of anion) of the salt in the ink is 0.005 to 0.06 mol/L. The water-soluble organic solvent includes glycerol, the content of which in the ink is 35% to 78% by mass based on the total content of the water-soluble organic solvent in the ink.Type: GrantFiled: July 5, 2011Date of Patent: July 2, 2013Assignee: Canon Kabushiki KaishaInventors: Souichi Nagai, Masashi Ogasawara, Keigo Gouda, Fumiaki Fujioka, Akiko Yasuda
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Patent number: 8469504Abstract: An object of the invention is to provide an ink set which enables to improve image density and scratch resistance of the images recorded using an ink containing a self-dispersion pigment and an ink containing a modified siloxane compound. An ink set to be used for ink jet recording including plural inks having a first ink and a second ink independently, wherein the first ink contains at least a pigment having functional groups on surface of pigment particles and a compound having adsorptivity to the pigment and the functional group density on the surface of the pigment particles is 1.5 ?mol/m2 or more and less than 2.6 ?mol/m2 and the second ink contains at least a pigment and a modified siloxane compound.Type: GrantFiled: July 30, 2009Date of Patent: June 25, 2013Assignee: Canon Kabushiki KaishaInventors: Takashi Saito, Katsuhiro Shirota, Hirofumi Ichinose, Hiromitsu Kishi, Masashi Tsujimura, Fumihiko Mukae, Fumiaki Fujioka, Katsuhiko Suzuki, Sayoko Nagashima
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Patent number: 8430496Abstract: An ink contains a plurality of pigments and a plurality of polymers. The plurality of pigments include C.I. pigment yellow 4 and C.I. pigment yellow 128. The plurality of polymers include a polymer A and a polymer B. The C.I. pigment yellow 74 is dispersed by the polymer A. The C.I. pigment yellow 128 is dispersed by the polymer B. A hydrogen bond parameter YA of a unit having the smallest hydrogen bond parameter of the constitutional units of the polymer A and a hydrogen bond parameter YB of a unit having the smallest hydrogen bond parameter of the constitutional units of the polymer B satisfy the relationship of YA<YB. A hydrogen bond parameter PA of the polymer A and a hydrogen bond parameter PB of the polymer B satisfy the relationship of PA<PB.Type: GrantFiled: January 27, 2011Date of Patent: April 30, 2013Assignee: Canon Kabushiki KaishaInventors: Nobuyuki Matsumoto, Fumiaki Fujioka
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Publication number: 20130027463Abstract: An ink cartridge including a housing formed with a resin and an ink stored in the housing, wherein the resin includes a white mica composition; the ink includes a salt and a self-dispersible pigment having a functional group that contains two phosphonic acid groups and is bonded to the particle surface thereof; the salt includes a specific cation and a specific anion; and an amount of calcium in the ink after the ink is preserved in the housing at 60° C. for 2 months is 10.0 ppm or less.Type: ApplicationFiled: June 19, 2012Publication date: January 31, 2013Applicant: CANON KABUSHIKI KAISHAInventors: Masashi Ogasawara, Keigo Gouda, Fumiaki Fujioka, Souichi Nagai, Akiko Yasuda, Keiichiro Tsukuda, Hiromasa Amma, Kyosuke Toda
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Publication number: 20120033009Abstract: Disclosed herein are an ink containing a self-dispersible pigment and a salt, wherein the self-dispersible pigment is a pigment to the surface of a particle of which a functional group containing at least a group having a hydrogen bonding property and two phosphonic acid groups is bonded, counter ions of the two phosphonic acid groups containing one of K+ and NH4+; the salt is constituted by combining at least one cation of K+ and NH4+ with at least one anion selected from the group consisting of Cl?, Br?, I?, ClO?, ClO2?, ClO3?, ClO4?, NO2?, NO3?, SO42?, CO32?, HCO3?, HCOO?, (COO?)2, COOH(COO?), CH3COO?, C2H4 (COO?)2, C6H5COO?, C6H4(COO?)2, PO43?, HPO42? and H2PO4?; a cation concentration in the ink is 0.04 mol/L or more; and the viscosity of a liquid obtained by evaporating 15% by mass of the ink is less than 3.5 mPa·s at 25° C.Type: ApplicationFiled: July 5, 2011Publication date: February 9, 2012Applicant: CANON KABUSHIKI KAISHAInventors: Keigo Gouda, Masashi Ogasawara, Tomonari Watanabe, Fumiaki Fujioka, Souichi Nagai, Akiko Yasuda
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Publication number: 20120033012Abstract: An ink jet ink including a self-dispersible pigment, a salt, a polyoxyethylene alkyl ether and a water-soluble organic solvent. The self-dispersible pigment is a pigment to a surface of a particle of which a functional group containing at least a phosphonic acid group is bonded, the introduced amount of the functional group bonded to the self-dispersible pigment is 0.10 to 0.33 mmol/g. The salt is constituted by combining a specific cation with a specific anion. The value (Concentration of anion)×(Valence number of anion) of the salt in the ink is 0.005 to 0.06 mol/L. The water-soluble organic solvent includes glycerol, the content of which in the ink is 35% to 78% by mass based on the total content of the water-soluble organic solvent in the ink.Type: ApplicationFiled: July 5, 2011Publication date: February 9, 2012Applicant: CANON KABUSHIKI KAISHAInventors: Souichi Nagai, Masashi Ogasawara, Keigo Gouda, Fumiaki Fujioka, Akiko Yasuda
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Publication number: 20110189396Abstract: An ink containing a plurality of coloring materials having different hues, wherein the bronze value B, which is calculated from tristimulus values of reflected light, of illumination in the direction of an angle of 45 degrees to a normal to the image, in the direction of specular reflection and tristimulus values of illumination light under the same condition of the illumination by using Formula 1, with respect to a predetermined recorded image recorded by the above-described ink is 2.0 or less.Type: ApplicationFiled: January 27, 2011Publication date: August 4, 2011Applicant: CANON KABUSHIKI KAISHAInventors: Hiromitsu Kishi, Fumiaki Fujioka, Hirofumi Ichinose, Rie Takekoshi, Takumi Kaneko, Yumi Kamimura, Kazuki Narumi, Akihiro Kakinuma
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Publication number: 20110187787Abstract: An ink containing a plurality of organic pigments having hues forming an angle of 10 degrees or more with one another, wherein the bronze value B calculated by Formula 1 is 0.0 or more, and 12.0 or less, the saturation value C calculated by Formula 2 is 65.0 or more, and the 20-degree gloss value GB is 30.0 or more with respect to a predetermined recorded image recorded by the ink.Type: ApplicationFiled: January 27, 2011Publication date: August 4, 2011Applicant: CANON KABUSHIKI KAISHAInventors: Fumiaki Fujioka, Hiromitsu Kishi