Patents by Inventor Masaru Midorikawa

Masaru Midorikawa 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).

  • Publication number: 20200384763
    Abstract: A liquid jet head and a liquid jet recording device capable of reducing the installation area of the liquid jet head are provided. The liquid jet head according to an embodiment of the present disclosure is to be installed in a carriage of the liquid jet recording device. The liquid jet head includes a jet section provided with a nozzle hole configured to jet liquid, a support member configured to support the jet section, and provided with a hole part including a through hole penetrating in a jet direction of the liquid, a biasing member disposed in the hole part, and configured to bias the support member toward the carriage, and a biased member which is disposed at a predetermined position with respect to the carriage, and is biased in the hole part by the biasing member to thereby set a position of the nozzle hole with respect to the carriage.
    Type: Application
    Filed: June 4, 2020
    Publication date: December 10, 2020
    Inventors: Masatoshi SEKI, Takanori Koyano, Masaru Midorikawa
  • Patent number: 10688782
    Abstract: There are provided a liquid jet head and a liquid jet recording device capable of enhancing the reliability. A liquid jet head according to an embodiment of the disclosure includes a liquid jet section from which liquid is jetted, an electronic control section electrically connected to the liquid jet section, a main protective member adapted to cover a periphery of the electronic control section, a connection section attached to the electronic control section and adapted to electrically connect an outside of the liquid jet head and the electronic control section to each other, and a connection section protective member configured so as to make a state transition between a protection state of covering the connection section and an exposure state of exposing the connection section.
    Type: Grant
    Filed: November 6, 2018
    Date of Patent: June 23, 2020
    Assignee: SII PRINTEK INC.
    Inventors: Naohiro Tomita, Yuki Yamamura, Masaru Midorikawa, Shuji Sato, Shunsuke Yamazaki
  • Patent number: 10611180
    Abstract: There are provided a liquid jet head capable of dealing with jet of a variety of types of liquid, and at the same time superior in easiness in handling. The liquid jet head includes a main body part having a liquid jet head chip and a cooling section, and an inflow side connection unit and an outflow side connection unit each configured so as to selectively be attached to and detached from the main body part. As the inflow side connection unit, it is possible to select the first inflow side cover unit and the second inflow side cover unit. As the outflow side connection unit, it is possible to select the first outflow side cover unit and the second outflow side cover unit.
    Type: Grant
    Filed: October 31, 2018
    Date of Patent: April 7, 2020
    Assignee: SII PRINTEK INC.
    Inventors: Masaru Midorikawa, Shunsuke Yamazaki, Naohiro Tomita, Shuji Sato, Yuki Yamamura
  • Patent number: 10583676
    Abstract: A liquid jet head and a liquid jet recording device capable of accurately detecting the temperature of the ink are provided. A liquid jet head according to an embodiment of the disclosure includes a flow channel member provided with a flow channel of a liquid, and having a high heat conduction part disposed so as to have contact with the liquid flowing inside the flow channel, and a low heat conduction part having lower thermal conductivity than thermal conductivity of the high heat conduction part, a temperature detection element disposed outside the flow channel, and attached to the high heat conduction part, and a liquid jet section from which the liquid is jetted.
    Type: Grant
    Filed: October 31, 2018
    Date of Patent: March 10, 2020
    Assignee: SII PRINTEK INC.
    Inventors: Yuki Yamamura, Masaru Midorikawa, Naohiro Tomita, Shunsuke Yamazaki, Shuji Sato
  • Patent number: 10343411
    Abstract: A liquid ejecting head is mounted on a carriage in which a first positioning hole defined by a first inner surface is provided. The liquid ejecting head includes a first positioning member and a first intermediate member. The first intermediate member includes a first expansion portion being capable of being inserted into a first positioning hole and abutting on the first inner surface by expanding in a radial direction intersecting with an insertion direction of the first expansion portion. The first expansion portion includes a first insertion hole into which the first positioning member is inserted and expands in the radial direction by the first positioning member being inserted into the first insertion hole.
    Type: Grant
    Filed: May 11, 2018
    Date of Patent: July 9, 2019
    Assignee: SII PRINTEK INC.
    Inventors: Masaru Midorikawa, Naohiro Tomita, Shunsuke Yamazaki, Shuji Sato, Yuki Yamamura
  • Publication number: 20190143685
    Abstract: There is provided a liquid jet head capable of obtaining an excellent jet characteristic.
    Type: Application
    Filed: November 13, 2018
    Publication date: May 16, 2019
    Inventors: Yuki YAMAMURA, Masaru MIDORIKAWA, Shuji SATO, Shunsuke YAMAZAKI, Naohiro TOMITA
  • Publication number: 20190143681
    Abstract: There is provided a liquid jet head capable of enhancing the operation reliability. The liquid jet head is provided with an actuator plate having conductivity and a plurality of channels filled with liquid, a nozzle plate having conductivity which is electrically insulated from the actuator plate, and has a plurality of nozzle holes from which the liquid filled in the plurality of channels is jetted, a base having conductivity adapted to support each of the actuator plate and the nozzle plate, and a protective member having conductivity, adapted to cover at least a part of a surface of the nozzle plate in an area where the plurality of nozzle holes is not disposed on a side from which the liquid is jetted, and electrically connected to each of the nozzle plate and the base.
    Type: Application
    Filed: November 12, 2018
    Publication date: May 16, 2019
    Inventors: Naohiro TOMITA, Yuki YAMAMURA, Masaru MIDORIKAWA, Shuji SATO, Shunsuke YAMAZAKI
  • Publication number: 20190134976
    Abstract: There are provided a liquid jet head and a liquid jet recording device capable of enhancing the reliability. A liquid jet head according to an embodiment of the disclosure includes a liquid jet section from which liquid is jetted, an electronic control section electrically connected to the liquid jet section, a main protective member adapted to cover a periphery of the electronic control section, a connection section attached to the electronic control section and adapted to electrically connect an outside of the liquid jet head and the electronic control section to each other, and a connection section protective member configured so as to make a state transition between a protection state of covering the connection section and an exposure state of exposing the connection section.
    Type: Application
    Filed: November 6, 2018
    Publication date: May 9, 2019
    Inventors: Naohiro TOMITA, Yuki YAMAMURA, Masaru MIDORIKAWA, Shuji SATO, Shunsuke YAMAZAKI
  • Publication number: 20190134980
    Abstract: There is provided a liquid jet head which makes it possible to stably manufacture the liquid jet head having an excellent jet characteristic. The liquid jet head is provided with a head chip including an actuator plate having a plurality of channels which is filled with liquid, and a nozzle plate attached to the actuator plate and having a plurality of nozzle holes from which the liquid filled in the plurality of channels is jetted, and a flow channel member fixed along the head chip, having a flow channel of the liquid to be supplied to the plurality of channels, and being higher in rigidity than the head chip.
    Type: Application
    Filed: November 6, 2018
    Publication date: May 9, 2019
    Inventors: Shunsuke YAMAZAKI, Naohiro TOMITA, Masaru MIDORIKAWA, Yuki YAMAMURA, Shuji SATO
  • Publication number: 20190134981
    Abstract: A liquid jet head capable of a stable jet operation is provided. The liquid jet head includes a liquid jet head chip adapted to jet liquid, a flow channel member having a flow channel adapted to guide the liquid to the liquid jet head chip, an adhesive layer adapted to bond the flow channel member and the liquid jet head chip to each other, and an elastic body softer than the adhesive layer and disposed between the flow channel member and the liquid jet head chip.
    Type: Application
    Filed: November 6, 2018
    Publication date: May 9, 2019
    Inventors: Shunsuke YAMAZAKI, Naohiro TOMITA, Masaru MIDORIKAWA, Yuki YAMAMURA, Shuji SATO
  • Publication number: 20190126650
    Abstract: A liquid jet head and a liquid jet recording device capable of accurately detecting the temperature of the ink are provided. A liquid jet head according to an embodiment of the disclosure includes a flow channel member provided with a flow channel of a liquid, and having a high heat conduction part disposed so as to have contact with the liquid flowing inside the flow channel, and a low heat conduction part having lower thermal conductivity than thermal conductivity of the high heat conduction part, a temperature detection element disposed outside the flow channel, and attached to the high heat conduction part, and a liquid jet section from which the liquid is jetted.
    Type: Application
    Filed: October 31, 2018
    Publication date: May 2, 2019
    Inventors: Yuki YAMAMURA, Masaru MIDORIKAWA, Naohiro TOMITA, Shunsuke YAMAZAKI, Shuji SATO
  • Publication number: 20190126649
    Abstract: There are provided a liquid jet head capable of dealing with jet of a variety of types of liquid, and at the same time superior in easiness in handling. The liquid jet head includes a main body part having a liquid jet head chip and a cooling section, and an inflow side connection unit and an outflow side connection unit each configured so as to selectively be attached to and detached from the main body part. As the inflow side connection unit, it is possible to select the first inflow side cover unit and the second inflow side cover unit. As the outflow side connection unit, it is possible to select the first outflow side cover unit and the second outflow side cover unit.
    Type: Application
    Filed: October 31, 2018
    Publication date: May 2, 2019
    Inventors: Masaru MIDORIKAWA, Shunsuke YAMAZAKI, Naohiro TOMITA, Shuji SATO, Yuki YAMAMURA
  • Publication number: 20190126620
    Abstract: There are provided a liquid jet head and a liquid jet recording device capable of reducing the cost. A liquid jet head according to an embodiment of the disclosure includes a nozzle plate provided with a nozzle, an actuator disposed so as to be opposed to the nozzle plate, and having a channel communicated with the nozzle and an electrode disposed on a wall surface of the channel, and an adhesive layer disposed between the actuator and the nozzle plate, and including a plurality of insulating particles.
    Type: Application
    Filed: October 31, 2018
    Publication date: May 2, 2019
    Inventors: Yuki YAMAMURA, Masaru MIDORIKAWA, Naohiro TOMITA, Shunsuke YAMAZAKI, Emiko OSAKA, Shuji SATO
  • Publication number: 20180333958
    Abstract: A liquid ejecting head is mounted on a carriage in which a first positioning hole defined by a first inner surface is provided. The liquid ejecting head includes a first positioning member and a first intermediate member. The first intermediate member includes a first expansion portion being capable of being inserted into a first positioning hole and abutting on the first inner surface by expanding in a radial direction intersecting with an insertion direction of the first expansion portion. The first expansion portion includes a first insertion hole into which the first positioning member is inserted and expands in the radial direction by the first positioning member being inserted into the first insertion hole.
    Type: Application
    Filed: May 11, 2018
    Publication date: November 22, 2018
    Inventors: Masaru MIDORIKAWA, Naohiro TOMITA, Shunsuke YAMAZAKI, Shuji SATO, Yuki YAMAMURA
  • Patent number: 10105953
    Abstract: A cleaning device includes a blade unit configured to move relative to an ink jet head and to wipe an ejection surface of the ink jet head. The blade unit includes a first blade and a second blade that are arranged in a moving direction of the blade unit and formed into flexible plate shapes and a blower that makes an inner space, which is defined by the first blade and the second blade, into a negative pressure.
    Type: Grant
    Filed: April 5, 2017
    Date of Patent: October 23, 2018
    Assignee: SII PRINTEK INC.
    Inventor: Masaru Midorikawa
  • Publication number: 20170297339
    Abstract: A cleaning device includes a blade unit configured to move relative to an ink jet head and to wipe an ejection surface of the ink jet head. The blade unit includes a first blade and a second blade that are arranged in a moving direction of the blade unit and formed into flexible plate shapes and a blower that makes an inner space, which is defined by the first blade and the second blade, into a negative pressure.
    Type: Application
    Filed: April 5, 2017
    Publication date: October 19, 2017
    Inventor: Masaru MIDORIKAWA
  • Patent number: 8449090
    Abstract: An ink jet recording apparatus has a sub tank that supplies ink from an ink cartridge to an ink jet head carried by a reciprocating carriage. The sub tank has an ink container formed of two opposed resin films welded together around their peripheries, and resin sheet members are attached to the ink container over the weld portion for expanding the ink container and restoring it to its original shape after the ink container is deformed by ink flowing in or out of the ink container. The sheet members may be polyimide tape strips or the like that have higher resilience than the material of the ink container and prevent plastic deformation of the ink container due to expansion and compression thereof as ink flows in and out of the ink container.
    Type: Grant
    Filed: June 7, 2010
    Date of Patent: May 28, 2013
    Assignee: Seiko I Infotech Inc.
    Inventor: Masaru Midorikawa
  • Publication number: 20100309264
    Abstract: Provided is a recording apparatus which prevents a plastic deformation of an ink container of a sub tank that may occur when the ink container is expanded and compressed. Therefore, a reinforcing material having higher resilience than a material of the ink container of the sub tank is fixed to a part of the ink container of the sub tank that is apt to cause a plastic deformation. Thus, the plastic deformation of the ink container of the sub tank is prevented, so as to prevent the plastic deformation due to expansion and compression of the ink container when ink flows in and out. A fluctuation of pressure among individual sub tanks is eliminated, and a discharge failure of an ink jet head is prevented, so that deterioration in image quality can be prevented.
    Type: Application
    Filed: June 7, 2010
    Publication date: December 9, 2010
    Inventor: Masaru Midorikawa
  • Publication number: 20080128545
    Abstract: A carrying device includes: a supply portion (16) for supplying a recording sheet (3) from a supply roll (11) wound with the recording sheet (3); a platen (18), which is opposed to a recording head (7) for performing recording on the recording sheet (3) supplied from the supply portion (16), for supporting the recording sheet (3); a take-up portion (20) in which the recording sheet (3) on which recording has been performed by the recording head (7) is taken up by a take-up roll (12); and a suction fan (52) for sucking the recording sheet (3) supported on the platen (18). The platen (18) is provided with, in a position corresponding to an area in which recording is performed by the recording head (7), a plurality of recessed portions (48), which are formed from an upstream side to a downstream side of the platen (18) in a carrying direction of the recording sheet (3) and are surrounded by projected walls (49), aligned in a width direction of the recording sheet (3).
    Type: Application
    Filed: February 8, 2006
    Publication date: June 5, 2008
    Applicant: SEIKO I INFOTECH INC.
    Inventor: Masaru Midorikawa
  • Publication number: 20010012030
    Abstract: A maintenance mechanism for an ink jet head is provided, which is free from a problem in that remaining ink adhered to a side surface lower end of an ink jet head is adhered to a paper surface during subsequent printing to stain a printed material. The maintenance mechanism for an ink jet head is provided with ink collecting means (22) that is disposed in a side surface of a wiping device (2) for an ink jet head (1) and in the sweeping area of the ink jet head. The main part of the ink collecting means (22) is composed of an ink collecting roller case (26), a shaft (24a) having ends which are respectively supported rotatably by left and right side walls (26a, 26b) of the ink collecting roller case (26), and a pair of ink collecting rollers (24, 24) that are axially supported on the shaft (24a) in the vicinity of the left and right ends thereof. The pair of the ink collecting rollers (24, 24) are arranged such that the insides thereof are partially pressed against the end portions of the ink jet head (1).
    Type: Application
    Filed: January 12, 2001
    Publication date: August 9, 2001
    Inventor: Masaru Midorikawa