Patents by Inventor Makoto Fukatsu
Makoto Fukatsu 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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Publication number: 20230390764Abstract: The present disclosure provides a microchannel device that has a channel sandwiched between channel walls formed in an inside of a porous substrate, wherein the channel wall contains a thermoplastic resin and a colorant, and wherein an abundance ratio of the colorant is higher in the porous substrate surface area of the channel wall than in an internal area of the channel wall. In the configuration of the present disclosure, since more of the colorant exist on the surface side of the porous substrate in the channel wall, the visibility of the channel is increased, and in addition, since the amount of the colorant in the internal portion of the channel wall is small, the elution of the ions contained in the colorant into the specimen is suppressed, and the measurement accuracy is increased.Type: ApplicationFiled: August 22, 2023Publication date: December 7, 2023Inventors: MAKOTO FUKATSU, MASANORI TANAKA, TAKESHI YAMAMOTO, Keiji Miyazaki, JUN MIURA, HARUNOBU MAEDA, FUKA ENOKIDO, AKIHISA MATSUKAWA, YUHEI TERUI
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Publication number: 20230390765Abstract: It is possible to provide a microchannel device with excellent resistance to bending and suppressed deterioration in inspection accuracy. A microchannel device has a channel sandwiched between channel walls formed in an inside a porous substrate, the channel wall contains a thermoplastic resin and a wax, and a proportion of the wax in an area of a surface side of the channel wall facing the channel is higher than a proportion of the wax inside the channel wall.Type: ApplicationFiled: August 22, 2023Publication date: December 7, 2023Inventors: AKIHISA MATSUKAWA, MAKOTO FUKATSU, MASANORI TANAKA, TAKESHI YAMAMOTO, Keiji Miyazaki, JUN MIURA, HARUNOBU MAEDA, FUKA ENOKIDO, YUHEI TERUI
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Patent number: 11435675Abstract: During non-image formation, an exposure unit exposes an image formable region on the image bearing member surface charged by a charging member to light, and, in a state where toner is able to be supplied from a developing member to the image bearing member, during a period from when a developing voltage starts to be changed from a first developing voltage to a second developing voltage smaller than the first developing voltage until the developing voltage is completed to be changed to the second developing voltage. A controller controls the exposure unit so that, after the image bearing member surface exposed to light with a first exposure amount by the exposure unit passes through a development portion, the image bearing member surface exposed to light with a second exposure amount smaller than the first exposure amount by the exposure unit passes through the development portion.Type: GrantFiled: March 12, 2020Date of Patent: September 6, 2022Assignee: Canon Kabushiki KaishaInventors: Ryosuke Kanai, Makoto Fukatsu
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Publication number: 20220187734Abstract: An image forming apparatus at least includes: an image bearing member; a developer container; a developer carrying member; and a controller that controls a power source that applies a voltage to the developer carrying member, wherein the developer carrying member has at least a base and a surface layer, the surface layer has an electron donating portion that mainly donates charge to the developer when the developer and the surface layer makes frictional contact to exchange charge and an electron accepting portion that mainly accepts charge from the developer, and the controller applies an AC voltage to the developer carrying member during a period in which an image forming operation is not performed and the developer carrying member is driven, the AC voltage being different from that applied during an image forming period.Type: ApplicationFiled: March 11, 2020Publication date: June 16, 2022Inventors: Yuta Isobe, Kuniaki Tamagaki, Takashi Koyanagi, Akihisa Matsukawa, Ryosuke Kanai, Hiroki Tanaka, Motonari Ito, Kazuhisa Shida, Makoto Fukatsu
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Publication number: 20220177300Abstract: The present disclosure provides a method for producing a microchannel device, which can form a channel that has high hydrophobicity, high solvent resistance as well, and also resistance to heat and damage, on demand with high accuracy, and produces the microchannel device at a low cost, while having high productivity. The method for producing a microchannel device includes: forming a channel pattern from a hydrophobic resin on a porous substrate by an electrophotographic method; melting the channel pattern by heat to allow the channel pattern to permeate into the porous substrate, thereby forming a channel in the inside of the porous substrate.Type: ApplicationFiled: February 22, 2022Publication date: June 9, 2022Inventors: Takeshi Yamamoto, Jun Miura, Keiji Miyazaki, Hiroki Tanaka, Makoto Fukatsu, Akihisa Matsukawa, Takayuki Kanazawa, Keigo Mizusawa, Masanori Seki, Masanori Tanaka
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Publication number: 20220168731Abstract: Provided is a microchannel device, which has high hydrophobicity, high mechanical strength, and safety and also has high solvent resistance, and thus has wider applicability. The microchannel device includes a porous substrate having formed therein channel walls each containing a cyclic olefin copolymer that is a copolymer of an alkene and a cyclic olefin.Type: ApplicationFiled: February 17, 2022Publication date: June 2, 2022Inventors: Takeshi Yamamoto, Hiroki Tanaka, Jun Miura, Keiji Miyazaki, Makoto Fukatsu, Akihisa Matsukawa, Takayuki Kanazawa, Keigo Mizusawa, Masanori Seki, Masanori Tanaka
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Publication number: 20200310275Abstract: During non-image formation, an exposure unit exposes an image formable region on the image bearing member surface charged by a charging member to light, and, in a state where toner is able to be supplied from a developing member to the image bearing member, during a period from when a developing voltage starts to be changed from a first developing voltage to a second developing voltage smaller than the first developing voltage until the developing voltage is completed to be changed to the second developing voltage. A controller controls the exposure unit so that, after the image bearing member surface exposed to light with a first exposure amount by the exposure unit passes through a development portion, the image bearing member surface exposed to light with a second exposure amount smaller than the first exposure amount by the exposure unit passes through the development portion.Type: ApplicationFiled: March 12, 2020Publication date: October 1, 2020Inventors: Ryosuke Kanai, Makoto Fukatsu
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Patent number: 10578991Abstract: A nip portion is formed between a transfer member and an image bearing member. During an image transfer operation, a first transfer voltage is applied so that a first charging voltage is applied to the surface of the image bearing member forming the nip portion. Before paper enters, a second transfer voltage is applied so that a third charging voltage is applied to the surface of the image bearing member forming the nip portion. A void is formed by the image bearing member, the transfer member and the paper within the nip portion. Before an image transfer operation and the void is formed, one of the first and second transfer voltages and a third transfer voltage is applied so that a second charging voltage having a same polarity as the first charging voltage and being lower in absolute value is applied to the surface of the image bearing member.Type: GrantFiled: January 17, 2019Date of Patent: March 3, 2020Assignee: CANON KABUSHIKI KAISHAInventors: Shunsuke Mizukoshi, Makoto Fukatsu, Yuta Isobe, Shuhei Tokiwa
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Publication number: 20190227453Abstract: A nip for holding paper is formed between a transfer member and an image bearing member. During an image transfer operation, a first transfer voltage is applied thereto so that a first charging voltage is applied to the surface of the image bearing member forming the nip portion. Before paper enters thereto, a second transfer voltage is applied thereto so that a third charging voltage is applied to the surface of the image bearing member forming the nip portion. A void is formed by the image bearing member, the transfer member and the paper within the nip. Before an image transfer operation and the void is formed, one of the first, second and third transfer voltages is applied so that the second charging voltage having a same polarity as the first charging voltage and being lower in absolute value is applied to the surface of the image bearing member.Type: ApplicationFiled: January 17, 2019Publication date: July 25, 2019Inventors: Shunsuke Mizukoshi, Makoto Fukatsu, Yuta Isobe, Shuhei Tokiwa
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Patent number: 10310412Abstract: A developing apparatus, a cartridge, and an image forming apparatus in which, in a longitudinal direction, an edge portion of a carrying portion is disposed so as to be positioned outside an inner edge portion of an edge portion sealing member, and inside an outer edge portion of the edge portion sealing member. An edge portion of the restricting member is disposed so as to be positioned outside the edge portion of the carrying portion, and inside the outer edge portion of the edge portion sealing member.Type: GrantFiled: March 26, 2018Date of Patent: June 4, 2019Assignee: Canon Kabushiki KaishaInventors: Makoto Fukatsu, Yuta Isobe, Shunsuke Mizukoshi
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Patent number: 10151990Abstract: A toner comprising a toner particle that contains a binder resin, wherein the surface of the toner particle is covered with a resin A; the modulus of elasticity Ea of the resin A and the modulus of elasticity Eb of the binder resin satisfy the following formula: 0.5?(Ea/Eb)×100?50.0; and the adhesion force AT of the toner particle is at least 500 nN when a probe having spherical SiO2 attached at the tip of a cantilever is pressed into the toner particle at 3 ?N.Type: GrantFiled: November 16, 2017Date of Patent: December 11, 2018Assignee: CANON KABUSHIKI KAISHAInventors: Masao Suzuki, Kazuyuki Sato, Shohei Fukuya, Atsushi Nakamoto, Makoto Fukatsu, Takahiro Kawamoto, Maki Okajima, Masayoshi Kato, Yasunori Chigono, Takeshi Yamamoto
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Patent number: 10139745Abstract: A toner according to the present disclosure maintains high transfer efficiency for the long term and obtains images which are not affected by toner base particles easily, which exhibit excellent charge stability, and which exhibit less fogging, wherein the toner is obtained by making inorganic fine particles and charge control particles, which satisfy specific conditions, present on the surfaces of toner base particles so as to satisfy a specific coverage relationship.Type: GrantFiled: May 4, 2016Date of Patent: November 27, 2018Assignee: Canon Kabushiki KaishaInventors: Atsushi Nakamoto, Makoto Fukatsu, Manami Haraguchi, Masayoshi Kato, Kei Inoue, Kazuyuki Sato
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Patent number: 10108099Abstract: There is provided a toner including toner base particles and an external additive in which the external additive is prevented from being buried in the base particles. The toner can maintain a high transfer efficiency over an extended period of use. The toner includes: (1) toner base particles containing a cycloolefin copolymer and a polyethylene; or (2) toner base particles whose surfaces contain a resin having an elastic deformation rate of 70% or more and a melting temperature of 125.0° C. or less.Type: GrantFiled: October 25, 2017Date of Patent: October 23, 2018Assignee: Canon Kabushiki KaishaInventors: Makoto Fukatsu, Manami Haraguchi, Atsushi Nakamoto, Masayoshi Kato, Kazuhisa Kemmochi, Takahiro Kawamoto, Takeshi Yamamoto
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Publication number: 20180284648Abstract: A developing apparatus, a cartridge, and an image forming apparatus in which, in a longitudinal direction, an edge portion of a carrying portion is disposed so as to be positioned outside an inner edge portion of an edge portion sealing member, and inside an outer edge portion of the edge portion sealing member. An edge portion of the restricting member is disposed so as to be positioned outside the edge portion of the carrying portion, and inside the outer edge portion of the edge portion sealing member.Type: ApplicationFiled: March 26, 2018Publication date: October 4, 2018Inventors: Makoto Fukatsu, Yuta Isobe, Shunsuke Mizukoshi
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Publication number: 20180149989Abstract: A toner comprising a toner particle that contains a binder resin, wherein the surface of the toner particle is covered with a resin A; the modulus of elasticity Ea of the resin A and the modulus of elasticity Eb of the binder resin satisfy the following formula: 0.5?(Ea/Eb)×100?50.0; and the adhesion force AT of the toner particle is at least 500 nN when a probe having spherical SiO2 attached at the tip of a cantilever is pressed into the toner particle at 3 ?N.Type: ApplicationFiled: November 16, 2017Publication date: May 31, 2018Inventors: Masao Suzuki, Kazuyuki Sato, Shohei Fukuya, Atsushi Nakamoto, Makoto Fukatsu, Takahiro Kawamoto, Maki Okajima, Masayoshi Kato, Yasunori Chigono, Takeshi Yamamoto
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Publication number: 20180046104Abstract: There is provided a toner including toner base particles and an external additive in which the external additive is prevented from being buried in the base particles. The toner can maintain a high transfer efficiency over an extended period of use. The toner includes: (1) toner base particles containing a cycloolefin copolymer and a polyethylene; or (2) toner base particles whose surfaces contain a resin having an elastic deformation rate of 70% or more and a melting temperature of 125.0° C. or less.Type: ApplicationFiled: October 25, 2017Publication date: February 15, 2018Inventors: Makoto Fukatsu, Manami Haraguchi, Atsushi Nakamoto, Masayoshi Kato, Kazuhisa Kemmochi, Takahiro Kawamoto, Takeshi Yamamoto
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Patent number: 9829815Abstract: There is provided a toner including toner base particles and an external additive in which the external additive is prevented from being buried in the base particles. The toner can maintain a high transfer efficiency over an extended period of use. The toner includes: (1) toner base particles containing a cycloolefin copolymer and a polyethylene; or (2) toner base particles whose surfaces contain a resin having an elastic deformation rate of 70% or more and a melting temperature of 125.0° C. or less.Type: GrantFiled: May 12, 2016Date of Patent: November 28, 2017Assignee: Canon Kabushiki KaishaInventors: Makoto Fukatsu, Manami Haraguchi, Atsushi Nakamoto, Masayoshi Kato, Kazuhisa Kemmochi, Takahiro Kawamoto, Takeshi Yamamoto
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Patent number: 9594320Abstract: Provided is a toner, including a toner particle having a core particle containing a binder resin and a colorant. The toner particle has a protrusion on a surface thereof, and the protrusion contains an olefin-based polymer having a cyclic olefin structure. When an average radius of curvature of the protrusion, an average particle diameter of the core particle, a projected area of the toner particle, and a projected area of the protrusion that are calculated from a planar projected image of an image of the toner particle photographed with a scanning electron microscope are represented by Rs (?m), Rc (?m), S, and S1, respectively, the average radius of curvature Rs of the protrusion is 0.004Rc ?m or more and 0.100Rc ?m or less, and an average of a surface coverage “100×S1/S” % is 5% or more and 90% or less.Type: GrantFiled: June 12, 2015Date of Patent: March 14, 2017Assignee: CANON KABUSHIKI KAISHAInventors: Makoto Fukatsu, Manami Haraguchi, Atsushi Nakamoto, Kazunari Hagiwara, Tatsuaki Orihara, Shuhei Tokiwa
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Publication number: 20160334724Abstract: There is provided a toner including toner base particles and an external additive in which the external additive is prevented from being buried in the base particles. The toner can maintain a high transfer efficiency over an extended period of use. The toner includes: (1) toner base particles containing a cycloolefin copolymer and a polyethylene; or (2) toner base particles whose surfaces contain a resin having an elastic deformation rate of 70% or more and a melting temperature of 125.0° C. or less.Type: ApplicationFiled: May 12, 2016Publication date: November 17, 2016Inventors: Makoto Fukatsu, Manami Haraguchi, Atsushi Nakamoto, Masayoshi Kato, Kazuhisa Kemmochi, Takahiro Kawamoto, Takeshi Yamamoto
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Publication number: 20160327883Abstract: A toner according to the present disclosure maintains high transfer efficiency for the long term and obtains images which are not affected by toner base particles easily, which exhibit excellent charge stability, and which exhibit less fogging, wherein the toner is obtained by making inorganic fine particles and charge control particles, which satisfy specific conditions, present on the surfaces of toner base particles so as to satisfy a specific coverage relationship.Type: ApplicationFiled: May 4, 2016Publication date: November 10, 2016Inventors: Atsushi Nakamoto, Makoto Fukatsu, Manami Haraguchi, Masayoshi Kato, Kei Inoue, Kazuyuki Sato