Patents by Inventor Hisao Kamo
Hisao Kamo 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: 9216606Abstract: A recording medium includes a support and an ink-receiving layer. The ink-receiving layer contains alumina particles, silica particles and a binder. A composition analysis of the recording medium performed by X-ray photoelectron spectroscopy while etching is performed from a surface side to a support side provides a ratio of the amount of Si element to the total amount of Al element and Si element at an etching time of 0 minutes of 10 atomic percent or more and 90 atomic percent or less and a ratio of the amount of Si element to the total amount of Al element and Si element at an etching time of 5 minutes of 50 atomic percent or more.Type: GrantFiled: June 20, 2014Date of Patent: December 22, 2015Assignee: Canon Kabushiki KaishaInventors: Tetsuro Noguchi, Hisao Kamo, Isamu Oguri, Kazuhiko Araki, Shinya Yumoto
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Publication number: 20150283841Abstract: A recording medium includes a substrate, a first ink receiving layer and a second ink receiving layer in that order. The first ink receiving layer contains at least one inorganic pigment selected from the group consisting of alumina, hydrated alumina and fumed silica, polyvinyl alcohol, and a boric acid compound. The second ink receiving layer contains fumed silica, particles having an average particle size in a specific range, polyvinyl alcohol, and a boric acid compound. The boric acid compound content in the first ink receiving layer is in a predetermined range, and the boric acid compound content in the second ink receiving layer is in a predetermined range. The particle content in the second ink receiving layer is in a predetermined range.Type: ApplicationFiled: March 31, 2015Publication date: October 8, 2015Inventors: Kazuhiko Araki, Hisao Kamo, Yasuhiro Nito, Tetsuro Noguchi, Ryo Taguri, Isamu Oguri, Olivia Herlambang, Naoya Hatta, Shinya Yumoto
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Publication number: 20150197114Abstract: A recording medium that includes a base material and an ink-receiving layer. The ink-receiving layer includes an inorganic particle including a structure represented by General Formula (1) and a structure represented by General Formula (2) and a binder.Type: ApplicationFiled: January 7, 2015Publication date: July 16, 2015Inventors: Masahito Miyabe, Hisao Kamo, Isamu Oguri, Olivia Herlambang, Naoya Hatta, Shinya Yumoto
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Publication number: 20150197658Abstract: A recording medium that includes a base material and an ink-receiving layer. The ink-receiving layer includes an inorganic particle including a structure represented by General Formula (1) and a binder.Type: ApplicationFiled: January 7, 2015Publication date: July 16, 2015Inventors: Isamu Oguri, Hisao Kamo, Masahito Miyabe, Olivia Herlambang, Naoya Hatta, Shinya Yumoto
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Publication number: 20150197115Abstract: A recording medium includes a base material and an ink-receiving layer. The ink-receiving layer contains inorganic particles, a binder, and a compound A. The compound A contains a unit derived from a compound represented by General Formula (1) and a unit derived from at least one compound selected from compounds represented by General Formula (2) and compounds represented by General Formula (3).Type: ApplicationFiled: January 7, 2015Publication date: July 16, 2015Inventors: Naoya Hatta, Hisao Kamo, Isamu Oguri, Olivia Herlambang, Masahito Miyabe, Shinya Yumoto, Shoichi Takeda
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Patent number: 9079447Abstract: A recording medium has a backcoat layer, a substrate, and an ink-receiving layer in this order. The backcoat layer contains a first inorganic particle, a second inorganic particle, and a binder. The first inorganic particle has an average aspect ratio of 5 or more and an average diameter of 0.2 ?m or more and 10.0 ?m or less. The second inorganic particle has an average aspect ratio of less than 5 and an average diameter of 0.1 ?m or more and 0.9 ?m or less. The mass ratio of the first inorganic particle content to the second inorganic particle content of the backcoat layer is 30/70 or more and 70/30 or less.Type: GrantFiled: October 17, 2014Date of Patent: July 14, 2015Assignee: Canon Kabushiki KaishaInventors: Olivia Herlambang, Naoya Hatta, Ryo Taguri, Hisao Kamo
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Patent number: 9044987Abstract: A recording medium has a base, a first ink receiving layer, and a second ink receiving layer that is the outermost layer in the stated order, in which the first ink receiving layer is a layer adjacent to the second ink receiving layer, the first ink receiving layer contains fumed silica, the second ink receiving layer contains colloidal silica and resin particles, and the area in which the colloidal silica exists in the recording medium surface is 10% or more and 70% or less.Type: GrantFiled: August 4, 2014Date of Patent: June 2, 2015Assignee: Canon Kabushiki KaishaInventors: Tetsuro Noguchi, Hisao Kamo, Isamu Oguri, Shinya Yumoto
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Publication number: 20150110978Abstract: A recording medium has a backcoat layer, a substrate, and an ink-receiving layer in this order. The backcoat layer contains a first inorganic particle, a second inorganic particle, and a binder. The first inorganic particle has an average aspect ratio of 5 or more and an average diameter of 0.2 ?m or more and 10.0 ?m or less. The second inorganic particle has an average aspect ratio of less than 5 and an average diameter of 0.1 ?m or more and 0.9 ?m or less. The mass ratio of the first inorganic particle content to the second inorganic particle content of the backcoat layer is 30/70 or more and 70/30 or less.Type: ApplicationFiled: October 17, 2014Publication date: April 23, 2015Inventors: Olivia Herlambang, Naoya Hatta, Ryo Taguri, Hisao Kamo
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Publication number: 20150110979Abstract: A recording medium includes, in this order, a substrate, a first ink receiving layer containing inorganic particles, polyvinyl alcohol and a boric acid compound, and a resin layer containing a resin. In the first ink receiving layer, hydrated alumina accounts for 70% by mass or more of the inorganic particles. In the recording medium, the ratio of the boric acid compound content to the polyvinyl alcohol content is 30% by mass or more.Type: ApplicationFiled: October 21, 2014Publication date: April 23, 2015Inventors: Naoya Hatta, Ryo Taguri, Olivia Herlambang, Hisao Kamo
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Patent number: 8968844Abstract: A recording medium includes a base and an ink receiving layer. The ink receiving layer contains inorganic particles. The surface of the recording medium has an arithmetic mean roughness of 0.8 ?m or more in accordance with JIS B 0601:2001. The surface of the recording medium includes openings having a width of 30 ?m or less and a length of 500 ?m or less. The number of the openings is 5 or more and 30 or less per 1 mm2 of the surface of the recording medium.Type: GrantFiled: June 25, 2013Date of Patent: March 3, 2015Assignee: Canon Kabushiki KaishaInventors: Tetsuro Noguchi, Hisao Kamo, Isamu Oguri, Shinya Yumoto
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Publication number: 20150044396Abstract: A recording medium has a base, a first ink receiving layer, and a second ink receiving layer that is the outermost layer in the stated order, in which the first ink receiving layer is a layer adjacent to the second ink receiving layer, the first ink receiving layer contains fumed silica, the second ink receiving layer contains colloidal silica and resin particles, and the area in which the colloidal silica exists in the recording medium surface is 10% or more and 70% or less.Type: ApplicationFiled: August 4, 2014Publication date: February 12, 2015Inventors: Tetsuro Noguchi, Hisao Kamo, Isamu Oguri, Shinya Yumoto
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Publication number: 20150044398Abstract: A recording medium has a base and an ink receiving layer, in which the ink receiving layer contains colloidal silica, a zirconium compound, an ammonium salt, and hydroxycarboxylic acid and 90% or more of the colloidal silica contained in the ink receiving layer exists in a region of 0 nm or more and 300 nm or less in the depth direction from the outermost surface of the recording medium.Type: ApplicationFiled: August 4, 2014Publication date: February 12, 2015Inventors: Isamu Oguri, Hisao Kamo, Tetsuro Noguchi, Shinya Yumoto
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Publication number: 20140377482Abstract: A recording medium includes a support and an ink-receiving layer. The ink-receiving layer contains alumina particles, silica particles and a binder. A composition analysis of the recording medium performed by X-ray photoelectron spectroscopy while etching is performed from a surface side to a support side provides a ratio of the amount of Si element to the total amount of Al element and Si element at an etching time of 0 minutes of 10 atomic percent or more and 90 atomic percent or less and a ratio of the amount of Si element to the total amount of Al element and Si element at an etching time of 5 minutes of 50 atomic percent or more.Type: ApplicationFiled: June 20, 2014Publication date: December 25, 2014Inventors: Tetsuro Noguchi, Hisao Kamo, Isamu Oguri, Kazuhiko Araki, Shinya Yumoto
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Patent number: 8846166Abstract: The invention provides a recording medium having a substrate, a first ink receiving layer and a second ink receiving layer which is an outermost layer in this order, wherein the first ink receiving layer contains alumina hydrate and polyvinyl alcohol, the second ink receiving layer contains alumina hydrate, polyvinyl alcohol, a cationic polymer particle and a zirconium compound, and the thickness of the second ink receiving layer is 3 ?m or more and 10 ?m or less.Type: GrantFiled: September 13, 2013Date of Patent: September 30, 2014Assignee: Canon Kabushiki KaishaInventors: Olivia Herlambang, Yasuhiro Nito, Hisao Kamo
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Patent number: 8840975Abstract: A recording medium includes a base and an ink-receiving layer. The ink-receiving layer includes inorganic particles, a binder, poly(diallyldimethylamine hydrochloride), a cationic polymer having a sulfonyl group, and a polyvalent metal.Type: GrantFiled: March 15, 2013Date of Patent: September 23, 2014Assignee: Canon Kabushiki KaishaInventors: Isamu Oguri, Hisao Kamo, Tetsuro Noguchi, Shinya Yumoto
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Patent number: 8795798Abstract: A method for producing a recording medium, including a step of coating one or more ink receiving layers provided on at least one surface of a substrate with an outermost layer coating liquid to form an outermost layer, where an ink receiving layer of the one or more ink receiving layers, which is nearest to the outermost layer contains alumina hydrate and a binder. The outermost layer coating liquid contains monodispersive and spherical cationic colloidal silica particles having an average particle size of 30 nm or more and 60 nm or less, polyvinyl alcohol having a saponification degree of 75% by mol or more and 85% by mol or less and a viscosity-average polymerization degree of 1,500 or more and 2,200 or less, and cationic polyurethane emulsion particles having an average particle size of 10 nm or more and 100 nm or less.Type: GrantFiled: November 19, 2010Date of Patent: August 5, 2014Assignee: Canon Kabushiki KaishaInventors: Isamu Oguri, Hisao Kamo, Yasuhiro Nito, Tetsuro Noguchi, Ryo Taguri, Olivia Herlambang
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Patent number: 8784954Abstract: A recording medium includes, in sequence, a support; a first ink-receiving layer including an inorganic particle, a water-soluble polymer having a hydroxyl group, a water-soluble polymer not having a hydroxyl group, and a boric acid compound; and a second ink-receiving layer including an inorganic particle, a water-soluble polymer having a hydroxyl group, and a boric acid compound. The second ink-receiving layer does not include the water-soluble polymer not having the hydroxyl group, or the second ink-receiving layer includes the water-soluble polymer not having the hydroxyl group but the content of the water-soluble polymer not having the hydroxyl group relative to that of the inorganic particle in the second ink-receiving layer is smaller than the content of the water-soluble polymer not having the hydroxyl group relative to that of the inorganic particle in the first ink-receiving layer.Type: GrantFiled: October 10, 2013Date of Patent: July 22, 2014Assignee: Canon Kabushiki KaishaInventors: Yasuhiro Nito, Hisao Kamo, Naoya Hatta
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Patent number: 8765236Abstract: A recording medium includes a base, a second ink-receiving layer, and a first ink-receiving layer in this order. The first ink-receiving layer contains gas-phase method silica, a binder, a cationic polymer having a sulfonyl group, and glycol. The second ink-receiving layer contains gas-phase method silica and a binder and (1) does not contain any cationic polymer having a sulfonyl group or (2) contains a cationic polymer having a sulfonyl group in an amount not higher than 0.1 parts by mass based on 100 parts by mass of the gas-phase method silica.Type: GrantFiled: March 15, 2013Date of Patent: July 1, 2014Assignee: Canon Kabushiki KaishaInventors: Tetsuro Noguchi, Hisao Kamo, Isamu Oguri, Shinya Yumoto
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Patent number: 8747968Abstract: A recording medium includes, in sequence, a support, a first ink-receiving layer containing a first inorganic particle and a first binder, a second ink-receiving layer containing a second inorganic particle and a second binder, and a third ink-receiving layer which is an outermost surface layer and contains a third inorganic particle, a third binder, and a particle different from the third inorganic particle and having an average secondary particle size of 1.0 to 20.0 ?m. A mass ratio of a content of the first binder to a content of the first inorganic particle is larger than a mass ratio of a content of the second binder to a content of the second inorganic particle. A content of the particle having the specific average secondary particle size is 0.5% by mass or more with respect to a content of the third inorganic particle.Type: GrantFiled: August 6, 2013Date of Patent: June 10, 2014Assignee: Canon Kabushiki KaishaInventors: Yasuhiro Nito, Hisao Kamo, Tetsuro Noguchi, Ryo Taguri, Isamu Oguri, Olivia Herlambang, Naoya Hatta, Shinya Yumoto, Kazuhiko Araki
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Patent number: 8741401Abstract: A recording medium includes a support; and an ink-receiving layer, the ink-receiving layer having a lower layer and an upper layer, in which the lower layer contains fine inorganic particles, polyvinyl alcohol, and boric acid, the fine inorganic particles including at least one compound selected from alumina, hydrated alumina, and vapor-phase-process silica, in which the upper layer contains fine inorganic particles, polyvinyl alcohol, and boric acid, the fine inorganic particles including at least one compound selected from alumina and hydrated alumina, in which the lower layer has a boric acid content of 2.0% by mass to 7.0% by mass with respect to polyvinyl alcohol, and in which the upper layer has a boric acid content of 10.0% by mass to 30.0% by mass with respect to polyvinyl alcohol.Type: GrantFiled: February 7, 2012Date of Patent: June 3, 2014Assignee: Canon Kabushiki KaishaInventors: Tetsuro Noguchi, Hisao Kamo, Yasuhiro Nito, Ryo Taguri, Isamu Oguri, Olivia Herlambang, Naoya Hatta, Shinya Yumoto