Patents by Inventor Yuta ARAKAWA
Yuta ARAKAWA 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: 10960693Abstract: After an ejector passes an ejection end position, a controller controls a second conveyor to convey a sheet in a sub-scanning direction. The ejection end position is a position at which ink ejection by the ejector ends before reaching a turn position. An ejection start position is a position at which ink ejection by the ejector starts after turning at the turn position. Based on positional relationship between the ejection end position and a standard position, the controller adjusts timing of conveyance of the sheet or shift the turn position from the standard position in a direction of reducing an overlap between a sheet conveyance period after the ejector passes the ejection end position and an ejector deceleration period before the ejector reaches the turn position. The standard position is a standard turn position of the ejector and is determined from the ejection end position and the ejection start position.Type: GrantFiled: September 19, 2019Date of Patent: March 30, 2021Assignee: Brother Kogyo Kabushiki KaishaInventor: Yuta Arakawa
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Publication number: 20210070576Abstract: An image recording apparatus is provided, including a casing; a tray which is to be installed to the casing by being inserted in a first orientation and which is to be withdrawn from the casing in a second orientation that is opposite to the first orientation; a sheet conveying passage; a platen; a recording part; and an interlock which moves the platen while being interlocked with movement of the tray in the first orientation or movement in the second orientation. The platen is movable to a printing position and a release position. The interlock moves the platen from the printing position to the release position while being interlocked with the withdrawal of the tray from the casing or the insertion of the tray into the casing.Type: ApplicationFiled: September 9, 2020Publication date: March 11, 2021Applicant: BROTHER KOGYO KABUSHIKI KAISHAInventors: Yuta ARAKAWA, Hiroaki TAKAHASHI, Hideaki YOSHIMUNE, Kengo NODA
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Publication number: 20210070072Abstract: An image recording apparatus includes: a casing having an internal space; a conveying passage formed inside the casing; a first roller pair positioned in the conveying passage, having a driving roller and a driven roller, and configured to pinch a sheet and to convey the sheet in a conveying orientation; a platen positioned on a downstream side in the conveying orientation of the first roller pair, and having a supporting surface supporting the sheet; a recording part positioned above the platen and configured to record an image on the sheet supported by the platen; a second roller pair which is located on the downstream side in the conveying orientation of the supporting surface of the platen, and which is configured to pinch the sheet and to convey the sheet; and a moving mechanism configured to move the platen to a printing position and to a release position.Type: ApplicationFiled: August 26, 2020Publication date: March 11, 2021Applicant: BROTHER KOGYO KABUSHIKI KAISHAInventor: Yuta ARAKAWA
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Patent number: 10894880Abstract: A rubber composition contains: at least one rubber component selected from the group consisting of an ethylene propylene diene rubber, a chloroprene rubber, a nitrile rubber, and an acrylic rubber; 1.5 to 30 parts by mass of a fluorene-modified cellulose nanofiber per 100 parts by mass of the rubber component; and 30 to 120 parts by mass of a carbon-based filler per 100 parts by mass of the rubber component. A method of producing a rubber composition comprises: kneading a dispersion of a fluorene-modified cellulose nanofiber in a process oil and a rubber component to prepare a kneaded material; and mixing a vulcanizing agent into the kneaded material.Type: GrantFiled: March 22, 2019Date of Patent: January 19, 2021Assignees: TOYODA GOSEI CO., LTD., OSAKA GAS CO., LTD.Inventors: Yuta Arakawa, Yasuhiro Yamaguchi, Hidekazu Kurimoto, Masahiro Yamada, Hiroki Sakamoto
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Patent number: 10850500Abstract: A controller is configured to determine which of a first position and a second position is located at a farther downstream side in a moving direction of an ejector and to set a determined position as a turn position. The first position is a first distance away from an image formation end position in the moving direction. The second position is a second distance away from an image formation start position in the moving direction. The image formation end position is an end position of image formation onto a sheet in a conveyance process of the ejector before turning at the turn position. The image formation start position is a start position of image formation onto the sheet in a conveyance process of the ejector after turning at the turn position. The second distance is longer than the first distance.Type: GrantFiled: September 19, 2019Date of Patent: December 1, 2020Assignee: Brother Kogyo Kabushiki KaishaInventors: Yuta Arakawa, Keisuke Wakakusa
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Publication number: 20200276844Abstract: A carriage is configured to move by receiving driving force from a carriage motor. A recording head is mounted on the carriage. A controller is configured to: control a power supply to supply a first driving current to a drive target, the first driving current being variable; when a second driving current for driving the carriage motor does not exceed a limiting current, control the power supply to supply the second driving current to the carriage motor, the second driving current being variable, the limiting current being obtained by subtracting the first driving current from an allowable current of the power supply; and when the second driving current exceeds the limiting current, control the power supply to supply a limited second driving current to the carriage motor, the limited second driving current being obtained by cutting a part of the second driving current, the part exceeding the limiting current.Type: ApplicationFiled: February 19, 2020Publication date: September 3, 2020Inventor: Yuta Arakawa
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Publication number: 20200238739Abstract: A slide member slides in conjunction with reciprocation of a carriage. The slide member slides between a first position and a second position to cause a switch gear to move between a plurality of slide positions at which the switch gear engages respective ones of a plurality of transmission gears. The slide member at the second position is closer to a first end of a shaft than the slide member at the first position is. A first cover covers a first sliding contact portion of the shaft over an entire range of the first sliding contact portion in a main scanning direction. The slide member is in sliding contact with the first sliding contact portion when the slide member slides between the first position and the second position. The first sliding contact portion is closer to the first end than the slide member located at the first position is.Type: ApplicationFiled: January 23, 2020Publication date: July 30, 2020Inventors: Yuta Arakawa, Yoichiro Nishimura
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Publication number: 20200101720Abstract: A controller is configured to: when both a first conveyor and a second conveyor are operating concurrently, determine whether a reference current value exceeds a threshold value, the reference current value being obtained based on at least one of a first driving current that is a driving current of the first conveyor and a second driving current that is a driving current of the second conveyor; in response to determining that the reference current value exceeds the threshold value, continue an operation of an earlier-driven conveyor that is one of the first conveyor and the second conveyor that is started at earlier timing, and temporarily stop an operation of a later-driven conveyor that is one of the first conveyor and the second conveyor that is started at later timing; and after a driving current of the earlier-driven conveyor drops to a particular standard, restart the operation of the later-driven conveyor.Type: ApplicationFiled: September 19, 2019Publication date: April 2, 2020Inventors: Satoru ARAKANE, Yuta ARAKAWA, Yusuke ARAI
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Publication number: 20200101776Abstract: After an ejector passes an ejection end position, a controller controls a second conveyor to convey a sheet in a sub-scanning direction. The ejection end position is a position at which ink ejection by the ejector ends before reaching a turn position. An ejection start position is a position at which ink ejection by the ejector starts after turning at the turn position. Based on positional relationship between the ejection end position and a standard position, the controller adjusts timing of conveyance of the sheet or shift the turn position from the standard position in a direction of reducing an overlap between a sheet conveyance period after the ejector passes the ejection end position and an ejector deceleration period before the ejector reaches the turn position. The standard position is a standard turn position of the ejector and is determined from the ejection end position and the ejection start position.Type: ApplicationFiled: September 19, 2019Publication date: April 2, 2020Inventor: Yuta ARAKAWA
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Publication number: 20200101719Abstract: A controller is configured to determine which of a first position and a second position is located at a farther downstream side in a moving direction of an ejector and to set a determined position as a turn position. The first position is a first distance away from an image formation end position in the moving direction. The second position is a second distance away from an image formation start position in the moving direction. The image formation end position is an end position of image formation onto a sheet in a conveyance process of the ejector before turning at the turn position. The image formation start position is a start position of image formation onto the sheet in a conveyance process of the ejector after turning at the turn position. The second distance is longer than the first distance.Type: ApplicationFiled: September 19, 2019Publication date: April 2, 2020Inventors: Yuta ARAKAWA, Keisuke WAKAKUSA
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Publication number: 20190300689Abstract: A rubber composition contains: at least one rubber component selected from the group consisting of an ethylene propylene diene rubber, a chloroprene rubber, a nitrile rubber, and an acrylic rubber; 1.5 to 30 parts by mass of a fluorene-modified cellulose nanofiber per 100 parts by mass of the rubber component; and 30 to 120 parts by mass of a carbon-based filler per 100 parts by mass of the rubber component. A method of producing a rubber composition comprises: kneading a dispersion of a fluorene-modified cellulose nanofiber in a process oil and a rubber component to prepare a kneaded material; and mixing a vulcanizing agent into the kneaded material.Type: ApplicationFiled: March 22, 2019Publication date: October 3, 2019Inventors: Yuta ARAKAWA, Yasuhiro YAMAGUCHI, Hidekazu KURIMOTO, Masahiro YAMADA, Hiroki SAKAMOTO
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Patent number: 10406836Abstract: In an image recording apparatus, a peak load that is the highest load applied to a carriage moving in a first direction in a first load region is highest at a first highest-load position. A second load is highest at a second highest-load position of a second load region. In a retry processing, when a stop position of the carriage which is detected by a detector is located between the first highest-load position and the second highest-load position, the controller moves the carriage in the first direction toward a target position after moving the carriage from the stop position in a second direction to a first retry position located downstream of a restoration position in the first direction.Type: GrantFiled: March 29, 2018Date of Patent: September 10, 2019Assignee: BROTHER KOGYO KABUSHIKI KAISHAInventor: Yuta Arakawa
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Patent number: 10118422Abstract: An ink-jet recording apparatus, including: a carriage; a lever rotatable about an axis of a shaft and including a lever arm; and a guide having an elongate hole defined by a first edge portion having stoppers for retaining the lever arm and a second edge portion, wherein the guide having an inclined portion including an inclined surface for rotating the lever arm toward the second edge portion and formed downstream of the stoppers in a first direction, wherein the biasing member biases the lever in a second direction opposite to the first direction and in a direction directed from the second edge portion toward the first edge portion, and wherein a distance between: a first position where the inclined surface and the lever arm contact; and the axis of the shaft is larger than a distance between: a second position where each stopper contacts the lever arm; and the axis.Type: GrantFiled: September 28, 2017Date of Patent: November 6, 2018Assignee: BROTHER KOGYO KABUSHIKI KAISHAInventor: Yuta Arakawa
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Publication number: 20180281482Abstract: In an image recording apparatus, a peak load that is the highest load applied to a carriage moving in a first direction in a first load region is highest at a first highest-load position. A second load is highest at a second highest-load position of a second load region. In a retry processing, when a stop position of the carriage which is detected by a detector is located between the first highest-load position and the second highest-load position, the controller moves the carriage in the first direction toward a target position after moving the carriage from the stop position in a second direction to a first retry position located downstream of a restoration position in the first direction.Type: ApplicationFiled: March 29, 2018Publication date: October 4, 2018Applicant: BROTHER KOGYO KABUSHIKI KAISHAInventor: Yuta ARAKAWA
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Publication number: 20180178564Abstract: An ink-jet recording apparatus, including: a carriage; a lever rotatable about an axis of a shaft and including a lever arm; and a guide having an elongate hole defined by a first edge portion having stoppers for retaining the lever arm and a second edge portion, wherein the guide having an inclined portion including an inclined surface for rotating the lever arm toward the second edge portion and formed downstream of the stoppers in a first direction, wherein the biasing member biases the lever in a second direction opposite to the first direction and in a direction directed from the second edge portion toward the first edge portion, and wherein a distance between: a first position where the inclined surface and the lever arm contact; and the axis of the shaft is larger than a distance between: a second position where each stopper contacts the lever arm; and the axis.Type: ApplicationFiled: September 28, 2017Publication date: June 28, 2018Applicant: BROTHER KOGYO KABUSHIKI KAISHAInventor: Yuta ARAKAWA