Patents by Inventor Hirofumi KURIKI
Hirofumi KURIKI 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: 11897265Abstract: There is provided a cleaning liquid usable for cleaning of an ink-jet recording apparatus, the cleaning liquid including: a first water-soluble organic solvent, a vapor pressure at 20° C. of the first water-soluble organic solvent being not less than 7 Pa; a second water-soluble organic solvent, a vapor pressure at 20° C. of the second water-soluble organic solvent being not more than 1 Pa; a nonionic surfactant; and water. The cleaning liquid satisfies the following conditions (1) to (3): Condition (1): 10?A+B?60; Condition (2): A/B?1; Condition (3): (A+B)/C?10. In the conditions (1) to (3), A: a content amount (% by mass) of the first water-soluble organic solvent, B: a content amount (% by mass) of the second water-soluble organic solvent, and C: a content amount (% by mass) of the nonionic surfactant.Type: GrantFiled: November 30, 2021Date of Patent: February 13, 2024Assignee: Brother Kogyo Kabushiki KaishaInventors: Taro Nagano, Hirofumi Kuriki, Shunichi Higashiyama
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Publication number: 20220111653Abstract: There is provided a cleaning liquid usable for cleaning of an ink-jet recording apparatus, the cleaning liquid including: a first water-soluble organic solvent, a vapor pressure at 20° C. of the first water-soluble organic solvent being not less than 7 Pa; a second water-soluble organic solvent, a vapor pressure at 20° C. of the second water-soluble organic solvent being not more than 1 Pa; a nonionic surfactant; and water. The cleaning liquid satisfies the following conditions (1) to (3): Condition (1): 10?A+B?60; Condition (2): A/B?1; Condition (3): (A+B)/C?10. In the conditions (1) to (3), A: a content amount (% by mass) of the first water-soluble organic solvent, B: a content amount (% by mass) of the second water-soluble organic solvent, and C: a content amount (% by mass) of the nonionic surfactant.Type: ApplicationFiled: November 30, 2021Publication date: April 14, 2022Inventors: Taro Nagano, Hirofumi Kuriki, Shunichi Higashiyama
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Publication number: 20220111654Abstract: A cleaning liquid, usable for cleaning of an ink-jet recording apparatus, includes: a nonionic surfactant, solubility of the nonionic surfactant in water at 20° C. being less than 0.2% by mass; a first water-soluble organic solvent of which solubility parameter is not less than 13; a second water-soluble organic solvent of which solubility parameter is less than 12; and water. The cleaning liquid satisfies the following conditions (1) to (4): X?0.1;??Condition (1): A?B?0;??Condition (2): B/X?15;??Condition (3): 10?A+B?60.??Condition (4): X: a content amount (% by mass) of the nonionic surfactant, A: a content amount (% by mass) of the first water-soluble organic solvent, and B: a content amount (% by mass) of the second water-soluble organic solvent.Type: ApplicationFiled: November 30, 2021Publication date: April 14, 2022Inventors: Taro Nagano, Hirofumi Kuriki, Shunichi Higashiyama
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Publication number: 20220112390Abstract: A water-based ink for ink-jet recording includes: a water-soluble organic solvent; water; and a surfactant having solubility in the water at 20° C. in a range of 0.05% by mass to 0.2% by mass, a content amount of the surfactant in an entire amount of the water-based ink being not less than 1% by mass.Type: ApplicationFiled: November 30, 2021Publication date: April 14, 2022Inventors: Hirofumi Kuriki, Shunichi Higashiyama, Taro Nagano
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Publication number: 20220112389Abstract: A water-based ink for ink-jet recording includes: a liquid component which is liquid at 20° C.; and a solid component which is solid at 20° C. The liquid component includes: a first water-soluble organic solvent of which vapor pressure at 20° C. is not less than 7 Pa; a second water-soluble organic solvent of which vapor pressure at 20° C. is not more than 1 Pa; and water. The solid component includes at least one resin selected from the group consisting of: acrylic acid-based resin, maleate ester-based resin, vinyl acetate-based resin, carbonate-based resin, styrene-based resin, ethylene-based resin, propylene-based resin, urethane-based resin, vinyl chloride-based resin and copolymer resin thereof.Type: ApplicationFiled: November 30, 2021Publication date: April 14, 2022Applicant: Brother Kogyo Kabushiki KaishaInventors: Hirofumi Kuriki, Shunichi Higashiyama, Taro Nagano
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Patent number: 10488797Abstract: There is provided a fuser including: a cylindrical member; an endless belt; a pressing member; a pressing roller; and a lateral guide contacting a lateral end of the endless belt. A part of an outer circumferential surface of the pressing roller is located on a downstream of the second nip area in a first direction. A guide surface of the lateral guide has: a first guide surface located on an opposite side to the pressing roller with respect to a virtual plane including the center of a first nip area and the center of rotation of the cylindrical member, and a second guide surface located on a side of the pressing roller with respect to the virtual plane, located on the downstream side of the rotation axis of the pressing roller in the first direction, and arranged on a same plane as the first guide surface.Type: GrantFiled: March 23, 2018Date of Patent: November 26, 2019Assignee: Brother Kogyo Kabushiki KaishaInventors: Yasumasa Fujii, Tokifumi Tanaka, Hirofumi Kuriki, Masahito Kajita, Kenji Takeuchi, Hiroshi Handa
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Publication number: 20180284666Abstract: There is provided a fuser including: a cylindrical member; an endless belt; a pressing member; a pressing roller; and a lateral guide contacting a lateral end of the endless belt. A part of an outer circumferential surface of the pressing roller is located on a downstream of the second nip area in a first direction. A guide surface of the lateral guide has: a first guide surface located on an opposite side to the pressing roller with respect to a virtual plane including the center of a first nip area and the center of rotation of the cylindrical member, and a second guide surface located on a side of the pressing roller with respect to the virtual plane, located on the downstream side of the rotation axis of the pressing roller in the first direction, and arranged on a same plane as the first guide surface.Type: ApplicationFiled: March 23, 2018Publication date: October 4, 2018Inventors: Yasumasa Fujii, Tokifumi Tanaka, Hirofumi Kuriki, Masahito Kajita, Kenji Takeuchi, Hiroshi Handa
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Patent number: 9958818Abstract: A fixing device including an endless belt, a rotary body positioned outside of the endless belt, the rotary body having an axis extending in an axial direction, an elastic member positioned at an inner space of the endless belt and configured to nip the endless belt in cooperation with the rotary body, and an adhering member having rigidity higher than rigidity of the elastic member. The elastic member has a contact surface in contact with the endless belt. The adhering member has an adhered portion adhered to an opposite surface opposite to the contact surface. The adhering portion has a length in the axial direction smaller than the length of the elastic member in the axial direction.Type: GrantFiled: May 26, 2017Date of Patent: May 1, 2018Assignee: BROTHER KOGYO KABUSHIKI KAISHAInventors: Hirofumi Kuriki, Yasumasa Fujii, Akihiro Kobayashi
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Publication number: 20170343935Abstract: A fixing device including an endless belt, a rotary body positioned outside of the endless belt, the rotary body having an axis extending in an axial direction, an elastic member positioned at an inner space of the endless belt and configured to nip the endless belt in cooperation with the rotary body, and an adhering member having rigidity higher than rigidity of the elastic member. The elastic member has a contact surface in contact with the endless belt. The adhering member has an adhered portion adhered to an opposite surface opposite to the contact surface. The adhering portion has a length in the axial direction smaller than the length of the elastic member in the axial direction.Type: ApplicationFiled: May 26, 2017Publication date: November 30, 2017Applicant: BROTHER KOGYO KABUSHIKI KAISHAInventors: Hirofumi KURIKI, Yasumasa FUJII, Akihiro KOBAYASHI
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Patent number: 9618879Abstract: A developing cartridge includes: an agitation member configured to be rotatable around a rotational shaft extending in a first direction and to agitate a developer; an agitation gear being fixed to the agitation member and including a first gear configured to receive driving force to be inputted and a second gear positioned on one side of the first gear in the first direction; a detection target unit including a detection target receiving portion configured to receive the driving force from the second gear and a detection target portion configured to be detected by an external detecting apparatus; and a gear cover configured to cover at least a part of the agitation gear and the detection target unit therewith. The detection target portion is configured to move between the second gear and the gear cover when being projected in a direction orthogonal to the first direction.Type: GrantFiled: January 5, 2015Date of Patent: April 11, 2017Assignee: Brother Kogyo Kabushiki KaishaInventors: Ryuji Noda, Hirofumi Kuriki, Keita Shimizu
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Patent number: 9417558Abstract: A development cartridge including a housing, a developer carrying body rotating around a first axis along a first direction, a supply member rotating around a second axis along the first direction, a first gear connected with the developer carrying body, a second gear connected with the supply member, and a gear cover covering the first gear and the second gear, the gear cover including a first cover portion extending in a second direction perpendicular to the first direction, a second cover portion connected with the first cover portion, the second cover portion extending in the first direction, the second cover portion having an opening through which a part of the second gear protrudes from the second cover portion and is exposed.Type: GrantFiled: February 5, 2016Date of Patent: August 16, 2016Assignee: Brother Kogyo Kabushiki KaishaInventors: Takashi Shimizu, Atsushi Fukaya, Soun Kanada, Hirofumi Kuriki, Hiroya Fukuta
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Patent number: 9411261Abstract: A cartridge include a housing configured to accommodate a developing agent therein, a developing agent carrying member configured to carry the developing agent, a layer thickness restricting member disposed between the housing and the developing agent carrying member and configured to restrict a layer thickness of the developing agent carried by the developing agent carrying member, and a spacer disposed between the housing and the layer thickness restricting member in a first direction in which the developing agent carrying member and the layer thickness restricting member face one another and in which is orthogonal to a longitudinal direction of the developing agent carrying member. The spacer includes a first engaged portion configured to be engaged. The layer thickness restricting member includes a first engaging portion configured to engage with the first engaged portion such that relative movement of the spacer and the layer thickness restricting member is restricted.Type: GrantFiled: September 17, 2014Date of Patent: August 9, 2016Assignee: Brother Kogyo Kabushiki KaishaInventors: Hirofumi Kuriki, Takashi Shimizu
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Publication number: 20160154339Abstract: A development cartridge including a housing, a developer carrying body rotating around a first axis along a first direction, a supply member rotating around a second axis along the first direction, a first gear connected with the developer carrying body, a second gear connected with the supply member, and a gear cover covering the first gear and the second gear, the gear cover including a first cover portion extending in a second direction perpendicular to the first direction, a second cover portion connected with the first cover portion, the second cover portion extending in the first direction, the second cover portion having an opening through which a part of the second gear protrudes from the second cover portion and is exposed.Type: ApplicationFiled: February 5, 2016Publication date: June 2, 2016Inventors: Takashi Shimizu, Atsushi Fukaya, Soun Kanada, Hirofumi Kuriki, Hiroya Fukuta
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Patent number: 9256195Abstract: A development cartridge including a housing, a developer carrying body rotating around a first axis along a first direction, a supply member rotating around a second axis along the first direction, a first gear connected with the developer carrying body, a second gear connected with the supply member, and a gear cover covering the first gear and the second gear, the gear cover including a first cover portion extending in a second direction perpendicular to the first direction, a second cover portion connected with the first cover portion, the second cover portion extending in the first direction, the second cover portion having an opening through which a part of the second gear protrudes from the second cover portion and is exposed.Type: GrantFiled: November 18, 2014Date of Patent: February 9, 2016Assignee: Brother Kogyo Kabushiki KaishaInventors: Takashi Shimizu, Atsushi Fukaya, Soun Kanada, Hirofumi Kuriki, Hiroya Fukuta
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Publication number: 20150192880Abstract: A developing cartridge includes: an agitation member configured to be rotatable around a rotational shaft extending in a first direction and to agitate a developer; an agitation gear being fixed to the agitation member and including a first gear configured to receive driving force to be inputted and a second gear positioned on one side of the first gear in the first direction; a detection target unit including a detection target receiving portion configured to receive the driving force from the second gear and a detection target portion configured to be detected by an external detecting apparatus; and a gear cover configured to cover at least a part of the agitation gear and the detection target unit therewith. The detection target portion is configured to move between the second gear and the gear cover when being projected in a direction orthogonal to the first direction.Type: ApplicationFiled: January 5, 2015Publication date: July 9, 2015Inventors: Ryuji Noda, Hirofumi Kuriki, Keita Shimizu
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Publication number: 20150139692Abstract: A development cartridge including a housing, a developer carrying body rotating around a first axis along a first direction, a supply member rotating around a second axis along the first direction, a first gear connected with the developer carrying body, a second gear connected with the supply member, and a gear cover covering the first gear and the second gear, the gear cover including a first cover portion extending in a second direction perpendicular to the first direction, a second cover portion connected with the first cover portion, the second cover portion extending in the first direction, the second cover portion having an opening through which a part of the second gear protrudes from the second cover portion and is exposed.Type: ApplicationFiled: November 18, 2014Publication date: May 21, 2015Inventors: Takashi Shimizu, Atsushi Fukaya, Soun Kanada, Hirofumi Kuriki, Hiroya Fukuta
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Patent number: 9020389Abstract: A developing device is capable of preventing developing agent from leaking from a developing frame of a developer cartridge. The developer cartridge includes a developing agent carrying member including a rubber roller, a first seal including a first fluffing member, and a second seal including a second base member and a second fluffing member fixed thereto. The second base member and the second fluffing member have downstream end portions in a rotational direction of the developing agent carrying member. The downstream end portion of the second base member is positioned upstream of the downstream end portion of the second fluffing member. The downstream end portion of the second fluffing member is nipped between the first fluffing member and the rubber roller.Type: GrantFiled: August 30, 2012Date of Patent: April 28, 2015Assignee: Brother Kogyo Kabushiki KaishaInventors: Yoshinori Ito, Hirofumi Kuriki, Ryuya Yamazaki
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Patent number: 8995872Abstract: The developing device includes a casing, a developing roller, a thickness regulating blade, and a seal member. The developing roller has an outer peripheral surface carrying developer. The thickness regulating blade is configured to regulate a thickness of the developer carried on the outer peripheral surface and has an opposed surface confronting the casing. The thickness regulating blade further has one end part supported on the casing and another end part provided with a press member in sliding contact with the outer peripheral surface. The press member is located on the opposed surface and protrudes toward the developing roller. The press member is formed with a receiving portion depressed inward at its widthwise ends in an axial direction of the developing roller. The seal member is disposed between the thickness regulating blade and the casing and contacting at least a part of the receiving portion.Type: GrantFiled: January 17, 2012Date of Patent: March 31, 2015Assignee: Brother Kogyo Kabushiki KaishaInventors: Yoshinori Ito, Hirofumi Kuriki, Ryuya Yamazaki
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Publication number: 20150086249Abstract: A cartridge include a housing configured to accommodate a developing agent therein, a developing agent carrying member configured to carry the developing agent, a layer thickness restricting member disposed between the housing and the developing agent carrying member and configured to restrict a layer thickness of the developing agent carried by the developing agent carrying member, and a spacer disposed between the housing and the layer thickness restricting member in a first direction in which the developing agent carrying member and the layer thickness restricting member face one another and in which is orthogonal to a longitudinal direction of the developing agent carrying member. The spacer includes a first engaged portion configured to be engaged. The layer thickness restricting member includes a first engaging portion configured to engage with the first engaged portion such that relative movement of the spacer and the layer thickness restricting member is restricted.Type: ApplicationFiled: September 17, 2014Publication date: March 26, 2015Inventors: Hirofumi Kuriki, Takashi Shimizu
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Patent number: 8965242Abstract: In a developing device, a layer thickness regulating member, configured to regulate thickness of a layer of developer borne on a surface of a developer bearing member, includes: a first plate-shaped member having a pair of opposite ends in a perpendicular direction perpendicular to an axial direction of the developer bearing member, one end in the pair of opposite ends being in contact with the developer bearing member, the other end being supported by the casing; and a second plate-shaped member that is fixedly secured to the casing and that supports the first plate-shaped member. A seal member, which is in contact with an end portion of the developer bearing member in the axial direction of the developer bearing member, is in contact with an end portion of the first plate-shaped member in the axial direction of the developer bearing member. The second plate-shaped member holds the seal member.Type: GrantFiled: January 29, 2013Date of Patent: February 24, 2015Assignee: Brother Kogyo Kabushiki KaishaInventor: Hirofumi Kuriki