Patents by Inventor Taisuke MIZUNO
Taisuke MIZUNO 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: 20180001631Abstract: A liquid ejection head, including: nozzles; and a supply passage through which a liquid is supplied to the nozzles, wherein the supply passage includes (a) a first flow passage and (b) a second flow passage connected to the first flow passage and including two sections that extend in different directions from a connected position at which the first flow passage is connected to the second flow passage, the liquid being supplied to the second flow passage from the first flow passage, wherein the second flow passage has a liquid flow resistance larger in a first section than in a second section, and wherein a protrusion protruding toward the first flow passage is provided on an inner wall surface of the second flow passage facing the first flow passage, for permitting the liquid to more easily flow from the first flow passage into the first section than the second section.Type: ApplicationFiled: March 28, 2017Publication date: January 4, 2018Applicant: BROTHER KOGYO KABUSHIKI KAISHAInventors: Taisuke MIZUNO, Hideki HAYASHI, Keita SUGIURA
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Publication number: 20170282553Abstract: A head unit includes: nozzle chips which are arranged side by side in a first direction, each of the nozzle chips having a jetting surface and nozzles aligned in a predetermined direction parallel to the jetting surface and crossing both of the first direction and a second direction orthogonal to the first direction; a holder configured to hold the nozzle chips from a side opposite to the jetting surface; and a fixing plate to which the nozzle chips are fixed and which is arranged on a side facing the jetting surface of each of the nozzle chips, wherein the holder has first walls arranged in the second direction so as to sandwich the nozzle chips therebetween; each of the first walls has first projections formed on an end surface thereof facing the fixing plate; and the first projections make contact with the fixing plate.Type: ApplicationFiled: March 21, 2017Publication date: October 5, 2017Inventors: Hideki HAYASHI, Keita SUGIURA, Taisuke MIZUNO
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Publication number: 20170282562Abstract: A liquid jetting apparatus jetting a liquid onto a recording medium conveyed in a first direction includes head units arranged in a second direction orthogonal to the first direction. One head unit includes nozzle chips; one nozzle chip has a nozzle arrangement area wherein nozzles are aligned in a third direction crossing the first and second directions. The nozzle chip is arranged to be shifted relative to another nozzle chip in a direction crossing the first and second directions and different from the third direction. The head unit has a first overlapping portion wherein nozzle arrangement areas of first and second nozzle chips included in the nozzle chips partially overlap with each other in the first direction. The liquid jetting apparatus has a second overlapping portion wherein nozzle arrangement areas of third and fourth nozzle chips included in the head units partially overlap with each other in the first direction.Type: ApplicationFiled: March 22, 2017Publication date: October 5, 2017Inventors: Taisuke MIZUNO, Hideki HAYASHI, Keita SUGIURA
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Publication number: 20170259579Abstract: A liquid ejecting head, including a flow-path unit that includes: first and second nozzle groups disposed alongside each other in a second direction orthogonal to a first direction in which nozzles are arranged; first and second common liquid chambers respectively communicating with the first and second nozzle groups, the first and second common liquid chambers being disposed alongside each other in the second direction; a liquid supply opening communicating with the first common liquid chamber and a liquid discharge opening communicating with the second common liquid chamber, on one side of the flow-path unit in the first direction; and a connecting path connecting the first and second common liquid chambers on the other side of the flow-path unit in the first direction, wherein the first common liquid chamber is disposed nearer to an outer periphery of the flow-path unit in the second direction than the second common liquid chamber.Type: ApplicationFiled: May 26, 2017Publication date: September 14, 2017Inventors: Hiroto Sugahara, Shohei Koide, Taisuke Mizuno
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Patent number: 9688076Abstract: A liquid ejecting head, including a flow-path unit that includes: first and second nozzle groups disposed alongside each other in a second direction orthogonal to a first direction in which nozzles are arranged; first and second common liquid chambers respectively communicating with the first and second nozzle groups, the first and second common liquid chambers being disposed alongside each other in the second direction; a liquid supply opening communicating with the first common liquid chamber and a liquid discharge opening communicating with the second common liquid chamber, on one side of the flow-path unit in the first direction; and a connecting path connecting the first and second common liquid chambers on the other side of the flow-path unit in the first direction, wherein the first common liquid chamber is disposed nearer to an outer periphery of the flow-path unit in the second direction than the second common liquid chamber.Type: GrantFiled: March 31, 2016Date of Patent: June 27, 2017Assignee: Brother Kogyo Kabushiki KaishaInventors: Hiroto Sugahara, Shohei Koide, Taisuke Mizuno
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Publication number: 20170066247Abstract: A liquid ejection device is disclosed. One device includes a liquid supply member defining a liquid supply channel that is in communication with a common liquid chamber via an outlet of the liquid supply channel. The outlet and the common liquid chamber extend along a longitudinal direction respectively. The liquid supply member includes a plurality of ribs located within the liquid supply channel, the plurality of ribs are disposed side by side in the longitudinal direction. The plurality of ribs includes a first rib, a second rib and a third rib. A distance from the first rib to the third rib in the longitudinal direction is smaller than a distance from the first rib to the second rib in the longitudinal direction.Type: ApplicationFiled: September 8, 2016Publication date: March 9, 2017Inventors: Taisuke MIZUNO, Yasuo KATO, Takashi AIBA, Keita SUGIURA
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Patent number: 9487007Abstract: There is provided a liquid discharge apparatus including: driving elements; a first member including a first trace and a first IC connected to ones of the plurality of driving elements; a second member including a second trace and a second IC connected to other ones of the driving elements; and a metallic member arranged on one side with respect to the plurality of driving elements in a second direction orthogonal to the liquid discharge surface, the metallic member including: a body portion extending in the first direction while straddling over the driving elements, a first projection projected from the body portion toward the liquid discharge surface; and a second projection projected from the body portion toward the liquid discharge surface, wherein the first IC is supported by the first projection and the second IC is supported by the second projection.Type: GrantFiled: December 23, 2015Date of Patent: November 8, 2016Assignee: Brother Kogyo Kabushiki KaishaInventors: Keita Sugiura, Yasuo Kato, Takashi Aiba, Taisuke Mizuno
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Publication number: 20160288499Abstract: A liquid ejecting head, including a flow-path unit that includes: first and second nozzle groups disposed alongside each other in a second direction orthogonal to a first direction in which nozzles are arranged; first and second common liquid chambers respectively communicating with the first and second nozzle groups, the first and second common liquid chambers being disposed alongside each other in the second direction; a liquid supply opening communicating with the first common liquid chamber and a liquid discharge opening communicating with the second common liquid chamber, on one side of the flow-path unit in the first direction; and a connecting path connecting the first and second common liquid chambers on the other side of the flow-path unit in the first direction, wherein the first common liquid chamber is disposed nearer to an outer periphery of the flow-path unit in the second direction than the second common liquid chamber.Type: ApplicationFiled: March 31, 2016Publication date: October 6, 2016Inventors: Hiroto Sugahara, Shohei Koide, Taisuke Mizuno
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Publication number: 20160221337Abstract: There is provided a liquid discharge apparatus including: driving elements; a first member including a first trace and a first IC connected to ones of the plurality of driving elements; a second member including a second trace and a second IC connected to other ones of the driving elements; and a metallic member arranged on one side with respect to the plurality of driving elements in a second direction orthogonal to the liquid discharge surface, the metallic member including: a body portion extending in the first direction while straddling over the driving elements, a first projection projected from the body portion toward the liquid discharge surface; and a second projection projected from the body portion toward the liquid discharge surface, wherein the first IC is supported by the first projection and the second IC is supported by the second projection.Type: ApplicationFiled: December 23, 2015Publication date: August 4, 2016Inventors: Keita Sugiura, Yasuo Kato, Takashi Aiba, Taisuke Mizuno
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Patent number: 9150026Abstract: There is provided a liquid jetting apparatus including: a liquid jetting head; a cartridge installation portion; and an electroformed filter provided in a channel between the cartridge installation portion and the liquid jetting head. A lower limit Smin of the area of the filter is expressed as: S min = aL + a 2 ? L 2 + 4 ? ? ab 2 provided that a is a constant expressed as: a = 128 ? ? ? ? ? Q N ? ? ? ? ? d 4 ? ? ? ? P M , b is a constant expressed as: b=?cCVtotal, and L is a thickness of the filter. An upper limit Smax of the area of the filter is expressed as follows, S max = S b · 0.9 X .Type: GrantFiled: March 17, 2015Date of Patent: October 6, 2015Assignee: Brother Kogyo Kabushiki KaishaInventors: Taisuke Mizuno, Atsushi Ito
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Publication number: 20150273847Abstract: There is provided a liquid jetting apparatus including: a liquid jetting head; a cartridge installation portion; and an electroformed filter provided in a channel between the cartridge installation portion and the liquid jetting head. A lower limit Smin of the area of the filter is expressed as: S min = aL + a 2 ? L 2 + 4 ? ? ab 2 provided that a is a constant expressed as: a = 128 ? ? ? ? ? Q N ? ? ? ? ? d 4 ? ? ? ? P M b is a constant expressed as: b=?cCVtotal and L is a thickness of the filter. An upper limit Smax of the area of the filter is expressed as follows. S max = S b · 0.Type: ApplicationFiled: March 17, 2015Publication date: October 1, 2015Inventors: Taisuke MIZUNO, Atsushi Ito
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Patent number: 9142753Abstract: There is provided a piezoelectric actuator, including: first and second piezoelectric layers; a driving electrode arranged between the first and second piezoelectric layers; a second electrode maintained at a predetermined first electrical potential; and a third electrode maintained at a second electrical potential. A neutral plane of the piezoelectric actuator is positioned at a side opposite to the second piezoelectric layer relative to a center plane of the first piezoelectric layer in a direction of stacking of the first and second piezoelectric layers. A first portion of the first piezoelectric layer is sandwiched between the driving electrode and the second electrode, and a second portion of the second piezoelectric layer is sandwiched between the driving electrode and the third electrode. The first and second portions are polarized parallel to the stacking direction such that they are polarized in mutually opposite directions.Type: GrantFiled: July 30, 2014Date of Patent: September 22, 2015Assignee: Brother Kogyo Kabushiki KaishaInventors: Taisuke Mizuno, Mizuyo Takebayashi, Kyohei Naito, Shotaro Kanzaki, Masato Sueyasu, Keiji Kura
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Patent number: 9061504Abstract: There is provided a liquid jetting apparatus including: a liquid jetting head including a pressure generating element and a plurality of nozzles arranged in rows in a nozzle-row direction; and a controller. The controller is configured to: determine a basic flushing amount for each nozzle; make the liquid jetting head carry out flushing with the basic flushing amount for inner-side nozzles positioned at an inner side in the nozzle-row direction; and make the liquid jetting head carry out flushing with a flushing amount larger than the basic flushing amount, for outer-side nozzles positioned at an outer side in the nozzle-row direction, of the inner-side nozzles.Type: GrantFiled: March 17, 2014Date of Patent: June 23, 2015Assignee: Brother Kogyo Kabushiki KaishaInventors: Hiromitsu Mizutani, Yusuke Suzuki, Taisuke Mizuno, Shohei Koide, Atsushi Ito, Keita Hirai
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Patent number: 9044955Abstract: A liquid jetting apparatus includes: a liquid jetting section having a liquid jetting surface in which a plurality of nozzles are formed, and configured to jet a liquid from the plurality of nozzles; and a liquid supply section provided on the liquid jetting section on a side opposite to the liquid jetting surface with respect to a direction intersecting the liquid jetting surface, and configured to supply the liquid to the liquid jetting section. The liquid jetting section includes: two nozzle groups arranged apart in a predetermined scanning direction, each nozzle group including a plurality of nozzles aligned in a nozzle arrangement direction which intersects the scanning direction; and two common liquid chambers arranged apart in the scanning direction, each common liquid chamber extending in the nozzle arrangement direction and communicating with one of the two nozzle groups.Type: GrantFiled: August 11, 2014Date of Patent: June 2, 2015Assignee: Brother Kogyo Kabushiki KaishaInventors: Keita Hirai, Shohei Koide, Taisuke Mizuno, Hiromitsu Mizutani, Yusuke Suzuki
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Patent number: 9010480Abstract: A bulldozer is equipped with a cab, a cooling device, an engine cover, an engine, and an exhaust emission control device. The cooling device is situated behind the cab. The engine cover is situated in front of the cab. The engine is situated inside the engine cover. The engine includes a crank shaft that extends in the longitudinal direction of the bulldozer. The exhaust emission control device includes a main body pipe part and a connecting pipe part connecting to the main body pipe part. The exhaust emission control device cleans the exhaust from the engine inside the main body pipe part. The main body pipe part is situated in the front of the engine. At least a portion of the main body pipe part is situated to overlap with the engine in the front view of the bulldozer.Type: GrantFiled: December 13, 2012Date of Patent: April 21, 2015Assignee: Komatsu Ltd.Inventors: Kiyotaka Sakai, Taisuke Mizuno, Hirokazu Asaka
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Publication number: 20150049143Abstract: A liquid jetting apparatus includes: a liquid jetting section having a liquid jetting surface in which a plurality of nozzles are formed, and configured to jet a liquid from the plurality of nozzles; and a liquid supply section provided on the liquid jetting section on a side opposite to the liquid jetting surface with respect to a direction intersecting the liquid jetting surface, and configured to supply the liquid to the liquid jetting section. The liquid jetting section includes: two nozzle groups arranged apart in a predetermined scanning direction, each nozzle group including a plurality of nozzles aligned in a nozzle arrangement direction which intersects the scanning direction; and two common liquid chambers arranged apart in the scanning direction, each common liquid chamber extending in the nozzle arrangement direction and communicating with one of the two nozzle groups.Type: ApplicationFiled: August 11, 2014Publication date: February 19, 2015Inventors: Keita HIRAI, Shohei Koide, Taisuke Mizuno, Hiromitsu Mizutani, Yusuke Suzuki
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Publication number: 20150035906Abstract: There is provided a piezoelectric actuator, including: first and second piezoelectric layers; a driving electrode arranged between the first and second piezoelectric layers; a second electrode maintained at a predetermined first electrical potential; and a third electrode maintained at a second electrical potential. A neutral plane of the piezoelectric actuator is positioned at a side opposite to the second piezoelectric layer relative to a center plane of the first piezoelectric layer in a direction of stacking of the first and second piezoelectric layers. A first portion of the first piezoelectric layer is sandwiched between the driving electrode and the second electrode, and a second portion of the second piezoelectric layer is sandwiched between the driving electrode and the third electrode. The first and second portions are polarized parallel to the stacking direction such that they are polarized in mutually opposite directions.Type: ApplicationFiled: July 30, 2014Publication date: February 5, 2015Inventors: Taisuke MIZUNO, Mizuyo Takebayashi, Kyohei Naito, Shotaro Kanzaki, Masato Sueyasu, Keiji Kura
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Patent number: 8931585Abstract: The cab is situated on the body frame. The engine cover is situated in front of the cab. The engine includes the crankshaft extending in the longitudinal direction of the bulldozer. The air cleaner is situated above the engine. The air cleaner is secured to the engine cover. The duct connects the air cleaner and the engine. The duct includes the first connector and the second connector. The first connector is connected to the engine. The second connector is connected to the air cleaner. The front mounting part supports the engine on the body frame. The rear mounting part supports the engine on the body frame. The rear mounting part is situated behind and above the front mounting part.Type: GrantFiled: December 13, 2012Date of Patent: January 13, 2015Assignee: Komatsu Ltd.Inventors: Kiyotaka Sakai, Taisuke Mizuno, Hirokazu Asaka
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Publication number: 20140292869Abstract: There is provided a liquid jetting apparatus including: a liquid jetting head including a pressure generating element and a plurality of nozzles arranged in rows in a nozzle-row direction; and a controller. The controller is configured to: determine a basic flushing amount for each nozzle; make the liquid jetting head carry out flushing with the basic flushing amount for inner-side nozzles positioned at an inner side in the nozzle-row direction; and make the liquid jetting head carry out flushing with a flushing amount larger than the basic flushing amount, for outer-side nozzles positioned at an outer side in the nozzle-row direction, of the inner-side nozzles.Type: ApplicationFiled: March 17, 2014Publication date: October 2, 2014Applicant: Brother Kogyo Kabushiki KaishaInventors: Hiromitsu MIZUTANI, Yusuke Suzuki, Taisuke Mizuno, Shohei Koide, Atsushi Ito, Keita Hirai
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Publication number: 20130277129Abstract: The cab is situated on the body frame. The engine cover is situated in front of the cab. The engine includes the crankshaft extending in the longitudinal direction of the bulldozer. The air cleaner is situated above the engine. The air cleaner is secured to the engine cover. The duct connects the air cleaner and the engine. The duct includes the first connector and the second connector. The first connector is connected to the engine. The second connector is connected to the air cleaner. The front mounting part supports the engine on the body frame. The rear mounting part supports the engine on the body frame. The rear mounting part is situated behind and above the front mounting part.Type: ApplicationFiled: December 13, 2012Publication date: October 24, 2013Applicant: KOMATSU LTD.Inventors: Kiyotaka SAKAI, Taisuke MIZUNO, Hirokazu ASAKA