Patents by Inventor Kusunoki Higashino

Kusunoki Higashino 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).

  • Patent number: 11249076
    Abstract: A test device having a micro flow channel including a reaction part where a reactant that is reactive to a tested chemical dispersed in a tested fluid is fixed, and at least one actuator for actuating the tested fluid to move in at least one of two opposite sides of the micro flow channel so as to homogenize a density distribution of the tested chemical in the tested fluid. The tested fluid is sent in the micro flow channel a plurality of times.
    Type: Grant
    Filed: August 21, 2014
    Date of Patent: February 15, 2022
    Assignee: OTSUKA PHARMACEUTICAL CO., LTD.
    Inventors: Kusunoki Higashino, Yasuhiro Sando, Kenichi Miyata
  • Patent number: 10744765
    Abstract: An object of the present invention is to provide a liquid droplet ejection head and a liquid droplet ejection apparatus in which viscosity resistance of a liquid to be ejected is reduced on an ejection side of a nozzle to prevent pointed-end ejection and to improve accuracy of an ejection angle. This object is achieved by the following. That is, a channel 28 having a volume to be changed by a pressure generation element and a nozzle 23 communicating with the channel 28 are included. The inside of the nozzle 23 has a conical portion 23a with a diameter becoming gradually smaller toward an outside, and a cylindrical portion 23b continuous with the conical portion 23a and communicating with the outside. A connecting part of the conical portion 23a to the cylindrical portion 23b has the same opening cross-sectional shape as a connecting part of the cylindrical portion 23b to the conical portion 23a.
    Type: Grant
    Filed: August 10, 2017
    Date of Patent: August 18, 2020
    Assignee: Konica Minolta, Inc.
    Inventors: Akito Shimomura, Kusunoki Higashino
  • Publication number: 20190255846
    Abstract: An object of the present invention is to provide a liquid droplet ejection head and a liquid droplet ejection apparatus in which viscosity resistance of a liquid to be ejected is reduced on an ejection side of a nozzle to prevent pointed-end ejection and to improve accuracy of an ejection angle. This object is achieved by the following. That is, a channel 28 having a volume to be changed by a pressure generation element and a nozzle 23 communicating with the channel 28 are included. The inside of the nozzle 23 has a conical portion 23a with a diameter becoming gradually smaller toward an outside, and a cylindrical portion 23b continuous with the conical portion 23a and communicating with the outside. A connecting part of the conical portion 23a to the cylindrical portion 23b has the same opening cross-sectional shape as a connecting part of the cylindrical portion 23b to the conical portion 23a.
    Type: Application
    Filed: August 10, 2017
    Publication date: August 22, 2019
    Applicant: Konica Minolta, Inc.
    Inventors: Akito SHIMOMURA, Kusunoki HIGASHINO
  • Patent number: 10315433
    Abstract: An embodiment of an inkjet may include a plurality of nozzles to eject ink, a pressure chamber individually communicated with each nozzle and filled with ink, a pressure generator to eject ink by applying pressure to the pressure chamber, an inlet including a narrow portion with a flow path narrower than the pressure chamber and structured to supply ink to the pressure chamber, and a circulation flow path structured to discharge ink in the pressure chamber from near the nozzle. Viscosity resistance of the circulation flow path may be smaller than viscosity resistance of the nozzle, and impedance of the circulation flow path may be equal to or more than 0.5 times of the impedance of the inlet.
    Type: Grant
    Filed: January 15, 2016
    Date of Patent: June 11, 2019
    Assignee: KONICA MINOLTA, INC.
    Inventors: Takashi Matsuo, Hideyuki Kobayashi, Kusunoki Higashino
  • Publication number: 20180264837
    Abstract: An inkjet head includes the following. A plurality of nozzles eject ink. A pressure chamber is individually communicated with each nozzle and is filled with ink inside. A pressure generator is a driving source to eject ink by applying pressure to the pressure chamber. An inlet includes a narrow portion with a flow path narrower than the pressure chamber and supplies ink to the pressure chamber. A circulation flow path is able to discharge ink in the pressure chamber from near the nozzle. Viscosity resistance of the circulation flow path is smaller than viscosity resistance of the nozzle. Impedance of the circulation flow path is equal to or more than 0.5 times of impedance of the inlet.
    Type: Application
    Filed: January 15, 2016
    Publication date: September 20, 2018
    Inventors: Takashi MATSUO, Hideyuki KOBAYASHI, Kusunoki HIGASHINO
  • Patent number: 9487001
    Abstract: An inkjet head comprising ink flow paths each including a nozzle in communication with a pressure chamber. Pressurizing sections vary pressure on the ink in the respective pressure chambers. Each of the ink flow paths has a natural frequency of a first-order mode and the ink and has a natural frequency of a second-order mode which is higher than the natural frequency of the first-order mode. Each of the pressurizing sections varies the pressure on the ink for a predetermined time corresponding to the natural frequency of the first-order mode, so that a predetermined volume of ink is discharged when a shift of a fluid level of the ink due to pressure oscillation of the second-order mode is superposed on a shift of a fluid level of the ink due to pressure oscillation of the first-order mode.
    Type: Grant
    Filed: September 4, 2014
    Date of Patent: November 8, 2016
    Assignee: KONICA MINOLTA, INC.
    Inventors: Yasuo Nishi, Kusunoki Higashino
  • Publication number: 20160193830
    Abstract: An inkjet head comprising ink flow paths each including a nozzle in communication with a pressure chamber. Pressurizing sections vary pressure on the ink in the respective pressure chambers. Each of the ink flow paths has a natural frequency of a first-order mode and the ink and has a natural frequency of a second-order mode which is higher than the natural frequency of the first-order mode. Each of the pressurizing sections varies the pressure on the ink for a predetermined time corresponding to the natural frequency of the first-order mode, so that a predetermined volume of ink is discharged when a shift of a fluid level of the ink due to pressure oscillation of the second-order mode is superposed on a shift of a fluid level of the ink due to pressure oscillation of the first-order mode.
    Type: Application
    Filed: September 4, 2014
    Publication date: July 7, 2016
    Inventors: Yasuo NISHI, Kusunoki HIGASHINO
  • Patent number: 9375713
    Abstract: A liquid feeding system for a microchip performs: a first liquid feeding step in which a sample liquid in a sample liquid containing section is fed in the direction to a primary containing section via a reaction field; a second liquid feeding step in which, after the first liquid feeding step, the sample liquid is fed from the primary containing section in the direction to the reaction field; and a third liquid feeding step in which, after the second liquid feeding step, the feedings of the sample liquid from and to the reaction field and the primary containing section a rear side gas-liquid boundary face of the sample liquid in the first liquid feeding step and the front side and rear side gas-liquid boundary faces of the sample liquid in the second and third liquid feeding steps do not pass through the reaction field.
    Type: Grant
    Filed: September 3, 2010
    Date of Patent: June 28, 2016
    Assignee: KONICA MINOLTA, INC.
    Inventors: Youichi Aoki, Kusunoki Higashino, Naoki Hikage
  • Patent number: 9289990
    Abstract: An inkjet head may include a nozzle hole; a pressure chamber; and a piezoelectric device disposed on the side opposite to the nozzle hole. A cross-sectional shape of the pressure chamber may include a circular-arc-shaped side wall portion and linear side wall portions connected with two ends of the circular-arc-shaped side wall portion on the side opposite to the supply side, the distance between the linear side wall portions gradually decreasing toward the side opposite to the supply side. The piezoelectric device may include a displacement portion that causes the pressure change inside the pressure chamber, and an electrode connection portion electrically connecting the piezoelectric device and an electrode. A cross-sectional shape of the displacement portion may include a circular-arc-shaped portion and has a smaller cross section than a corresponding cross section of the shape formed by the circular-arc-shaped side portion.
    Type: Grant
    Filed: October 22, 2013
    Date of Patent: March 22, 2016
    Assignee: KONICA MINOLTA, INC.
    Inventors: Yuichi Machida, Kusunoki Higashino
  • Publication number: 20150306876
    Abstract: An inkjet head may include a nozzle hole; a pressure chamber; and a piezoelectric device disposed on the side opposite to the nozzle hole. A cross-sectional shape of the pressure chamber may include a circular-arc-shaped side wall portion and linear side wall portions connected with two ends of the circular-arc-shaped side wall portion on the side opposite to the supply side, the distance between the linear side wall portions gradually decreasing toward the side opposite to the supply side. The piezoelectric device may include a displacement portion that causes the pressure change inside the pressure chamber, and an electrode connection portion electrically connecting the piezoelectric device and an electrode. A cross-sectional shape of the displacement portion may include a circular-arc-shaped portion and has a smaller cross section than a corresponding cross section of the shape formed by the circular-arc-shaped side portion.
    Type: Application
    Filed: October 22, 2013
    Publication date: October 29, 2015
    Inventors: Yuichi MACHIDA, KUSUNOKI HIGASHINO
  • Patent number: 9120067
    Abstract: There are provided a micro mixer capable of efficiently mixing at least two types of liquids in a simple structure and a microfluidic chip provided with the micro mixer. In order to achieve the object, the micro mixer includes a minute passage through which first and second liquids are caused to flow respectively, and a mixing vessel in which a liquid injecting port caused to communicate with the minute passage is provided in a bottom part, and the liquid injecting port is provided in a shifted position from a center of the bottom part in the bottom part. Moreover, the liquid injecting port may be provided in a shifted position from a center line of the mixing vessel.
    Type: Grant
    Filed: December 13, 2010
    Date of Patent: September 1, 2015
    Assignee: KONICA MINOLTA, INC.
    Inventors: Kenichi Miyata, Takahiro Mohri, Kusunoki Higashino, Yasuhiro Sando, Masashi Nishikado, Gou Yanagihara
  • Patent number: 8979249
    Abstract: In a piezoelectric actuator (1) that vibrates a diaphragm (12) provided on a pressure chamber (21) formed in a substrate (11) toward the pressure chamber (21), a lower electrode (13), a piezoelectric member (14) and an upper electrode (15) sequentially stacked on the diaphragm (12) are provided, on a part of the piezoelectric member (14) above the side wall of the pressure chamber (21), an upper electrode drawing portion (15a) drawn out from the upper electrode (15) above the pressure chamber (21) is formed and under the upper electrode drawing portion (15a), the piezoelectric member (14) is separated by a gap portion (S) above a boundary surface between the side wall (21a) of the pressure chamber (21) and the pressure chamber (21) in the substrate (11).
    Type: Grant
    Filed: March 30, 2012
    Date of Patent: March 17, 2015
    Assignee: Konica Minolta, Inc.
    Inventors: Kouichi Sameshima, Kusunoki Higashino
  • Publication number: 20150050748
    Abstract: A test device having a micro flow channel including a reaction part where a reactant that is reactive to a tested chemical dispersed in a tested fluid is fixed, and at least one actuator for actuating the tested fluid to move in at least one of two opposite sides of the micro flow channel so as to homogenize a density distribution of the tested chemical in the tested fluid. The tested fluid is sent in the micro flow channel a plurality of times.
    Type: Application
    Filed: August 21, 2014
    Publication date: February 19, 2015
    Inventors: Kusunoki HIGASHINO, Yasuhiro SANDO, Kenichi Miyata
  • Patent number: 8920749
    Abstract: A microchip capable of sending liquid in a micro flow channel to a predetermined place irrespective of the pressure difference and sending a mixture of two or more liquid masses to a predetermined place even if the channel structure is simple. The microchip comprises an intermediate reservoir portion provided in a micro flow channel and adapted for temporarily holding liquid sent through the micro flow channel. The microchip is characterized in that the intermediate reservoir portion has a side channel, the volume of the intermediate reservoir portion is smaller than the total volume of the liquid sent into the intermediate reservoir portion, the side channel is provided for communication of a micro flow channel on the upstream side of the intermediate reservoir portion with a micro flow channel on the downstream side thereof, and the cross-section area of the side channel is smaller than that of the micro flow channel.
    Type: Grant
    Filed: August 14, 2013
    Date of Patent: December 30, 2014
    Assignee: Konica Minolta Medical & Graphic, Inc.
    Inventors: Youichi Aoki, Akihisa Nakajima, Kusunoki Higashino, Yasuhiro Sando, Yoshikazu Kurihara
  • Publication number: 20140162373
    Abstract: A microchip capable of sending liquid in a micro flow channel to a predetermined place irrespective of the pressure difference and sending a mixture of two or more liquid masses to a predetermined place even if the channel structure is simple. The microchip comprises an intermediate reservoir portion provided in a micro flow channel and adapted for temporarily holding liquid sent through the micro flow channel. The microchip is characterized in that the intermediate reservoir portion has a side channel, the volume of the intermediate reservoir portion is smaller than the total volume of the liquid sent into the intermediate reservoir portion, the side channel is provided for communication of a micro flow channel on the upstream side of the intermediate reservoir portion with a micro flow channel on the downstream side thereof, and the cross-section area of the side channel is smaller than that of the micro flow channel.
    Type: Application
    Filed: August 14, 2013
    Publication date: June 12, 2014
    Applicant: Konica Minolta, Inc.
    Inventors: Youichi AOKI, Akihisa NAKAJIMA, Kusunoki HIGASHINO, Yasuhiro SANDO, Yoshikazu KURIHARA
  • Patent number: 8678565
    Abstract: An electromechanical transducer (1) has a pressurizing chamber (21) and a side-chamber (23) formed in a plate (11). On a driven film (13) forming the upper wall surface (21a) of the pressurizing chamber (21) and the side-chamber (23), a lower electrode (33), a driving member, and an upper electrode (35) are formed in this order. The driving member is composed of an operation section (31p) located over the pressurizing chamber (21), and an extended section (31a) extending from the operation section (31p) to over the side-chamber (23). The side-chamber (23) has a smaller width than the pressurizing chamber (21) in a second direction perpendicular to a first direction in which the side-chamber (23) is located beside the pressurizing chamber (21). The extended section (31a) of the driving member has a smaller width than the side-chamber (23) in the second direction.
    Type: Grant
    Filed: April 27, 2011
    Date of Patent: March 25, 2014
    Assignee: Konica Minolta Holdings, Inc.
    Inventors: Kusunoki Higashino, Shinya Matsuda
  • Publication number: 20140028760
    Abstract: In a piezoelectric actuator (1) that vibrates a diaphragm (12) provided on a pressure chamber (21) formed in a substrate (11) toward the pressure chamber (21), a lower electrode (13), a piezoelectric member (14) and an upper electrode (15) sequentially stacked on the diaphragm (12) are provided, on a part of the piezoelectric member (14) above the side wall of the pressure chamber (21), an upper electrode drawing portion (15a) drawn out from the upper electrode (15) above the pressure chamber (21) is formed and under the upper electrode drawing portion (15a), the piezoelectric member (14) is separated by a gap portion (S) above a boundary surface between the side wall (21a) of the pressure chamber (21) and the pressure chamber (21) in the substrate (11).
    Type: Application
    Filed: March 30, 2012
    Publication date: January 30, 2014
    Applicant: Konica Minolta, Inc.
    Inventors: Kouichi Sameshima, Kusunoki Higashino
  • Patent number: 8486350
    Abstract: Provided is a microchip which is capable of determining the quantity of the liquid in the chip and dividing the liquid, and has a relatively simple flow passage structure. In the microchip liquid supply system, a portion of the liquid in an upstream passage among the liquid injected into a first flow passage is supplied from a liquid discharge passage by operating a suction pump connected to a liquid supply passage in such a state that an air vent hole is closed. Thereafter, the suction pump is operated with the air vent hole closed, whereby a portion of the liquid in a quantity determination passage among the liquid injected into the first flow passage is supplied from a liquid supply passage.
    Type: Grant
    Filed: May 1, 2009
    Date of Patent: July 16, 2013
    Assignee: Konica Minolta Medical & Graphic, Inc.
    Inventors: Akihisa Nakajima, Kusunoki Higashino, Yasuhiro Sando, Youichi Aoki
  • Patent number: 8444396
    Abstract: Disclosed herein is a micro fluid transferring system that comprises a micropump having a chamber, a first fluid transferring portion connected to the chamber, and a second fluid transferring portion connected to the chamber. This system is characterized in that at least one of the first and second fluid transferring portions comprises a pressure absorbing section for absorbing or alleviating a liquid vibrational pressure therein.
    Type: Grant
    Filed: February 3, 2010
    Date of Patent: May 21, 2013
    Assignee: Minolta Co., Ltd.
    Inventors: Kusunoki Higashino, Yasuhisa Fujii, Shunichi Hayamizu, Yasuhiro Sando
  • Publication number: 20130063530
    Abstract: An electromechanical transducer (1) has a pressurizing chamber (21) and a side-chamber (23) formed in a plate (11). On a driven film (13) forming the upper wall surface (21a) of the pressurizing chamber (21) and the side-chamber (23), a lower electrode (33), a driving member, and an upper electrode (35) are formed in this order. The driving member is composed of an operation section (31p) located over the pressurizing chamber (21), and an extended section (31a) extending from the operation section (31p) to over the side-chamber (23). The side-chamber (23) has a smaller width than the pressurizing chamber (21) in a second direction perpendicular to a first direction in which the side-chamber (23) is located beside the pressurizing chamber (21). The extended section (31a) of the driving member has a smaller width than the side-chamber (23) in the second direction.
    Type: Application
    Filed: April 27, 2011
    Publication date: March 14, 2013
    Inventors: Kusunoki Higashino, Shinya Matsuda