Patents by Inventor Hiroki Tamai

Hiroki Tamai 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: 20210096499
    Abstract: A cleaning device includes a cleaning unit and a unit moving mechanism. The cleaning unit brings a web into contact with a conveyance member rotating around an axis and removes foreign matter adhered to the conveyance member. The unit moving mechanism displaces the cleaning unit to a cleaning position where the web is brought into contact with the conveyance member and to a separation position where the web is separated away from the conveyance member. When the unit moving mechanism displaces the cleaning unit from the cleaning position to the separation position, the cleaning unit is displaced in a counter direction opposite to a rotational direction of the conveyance member on a contact face between the conveyance member and the web.
    Type: Application
    Filed: September 29, 2020
    Publication date: April 1, 2021
    Applicant: KYOCERA Document Solutions Inc.
    Inventors: Takeshi WATANABE, Hiroki SAKANE, Masato USUI, Kenichi SATAKE, Shinobu OHATA, Naoto MIYAKOSHI, Shunsuke YAMASAKI, Yasuhiro MICHISHITA, Yusuke TAMEKUNI, Yuzuru YUASA, Hiroatsu TAMAI
  • Publication number: 20210070075
    Abstract: A cleaning device cleans a conveyance face of a conveyance member conveying a sheet. The cleaning device includes a delivery roller, a pressure roller, a fixed roller and a winding roller. The delivery roller supports a web roll that a belt shaped web is wound into a roll. The pressure roller brings the web delivered from the web roll into pressure-contact with the conveyance face. The fixed roller keeps an extending angle of the web passed from between the conveyance member and the pressure roller constant. The winding roller winds the used web passed the fixed roller into a roll.
    Type: Application
    Filed: September 10, 2020
    Publication date: March 11, 2021
    Applicant: KYOCERA Document Solutions Inc.
    Inventors: Yusuke TAMEKUNI, Takeshi WATANABE, Kenichi SATAKE, Masato USUI, Yuzuru YUASA, Yasuhiro MICHISHITA, Shinobu OHATA, Shunsuke YAMASAKI, Naoto MIYAKOSHI, Hiroki SAKANE, Hiroatsu TAMAI
  • Publication number: 20210070074
    Abstract: A cleaning device includes a cleaning unit which removes foreign matter adhered on a conveyance face of a conveyance member conveying a sheet, by using a belt shaped web; and a unit moving mechanism which displaces the cleaning unit to a cleaning position where the cleaning unit comes into contact with the conveyance face and to a separation position separated away from the cleaning position. The cleaning unit includes a delivery roller delivering the web, a pressure roller bringing the web pressure-contact with the conveyance face and a winding roller winding the web passed the conveyance face. The cleaning unit is tilted such that a cleaning face of the web between the pressure roller and the winding roller faces upward as the cleaning unit is displaced from the cleaning position to the separation position.
    Type: Application
    Filed: September 4, 2020
    Publication date: March 11, 2021
    Applicant: KYOCERA Document Solutions Inc.
    Inventors: Kenichi SATAKE, Takeshi WATANABE, Hiroki SAKANE, Yasuhiro MICHISHITA, Masato USUI, Yuzuru YUASA, Yusuke TAMEKUNI, Shinobu OHATA, Naoto MIYAKOSHI, Shunsuke YAMASAKI, Hiroatsu TAMAI
  • Publication number: 20200376866
    Abstract: A cleaning device includes a controller configured to control cleaning of a conveyance roller by a web. The controller includes a take-up control unit and a web end determination unit. The take-up control unit controls the solenoid such that the web is taken up by rotatably driving the take-up roller in a state where the web is pressed to the conveyance roller. The web end determination unit determines whether or not an end of the web is exposed on a support roller by a take-up operation of the take-up roller. The web end determination unit determines that the end of the web is exposed on the support roller when a detection result of a detection unit is not changed in spite of a fact that supplying of electricity to the solenoid is performed.
    Type: Application
    Filed: May 28, 2020
    Publication date: December 3, 2020
    Inventors: Hiroatsu Tamai, Naoto Miyakoshi, Shunsuke Yamasaki, Shinobu Ohata, Yasuhiro Michishita, Takeshi Watanabe, Kenichi Satake, Hiroki Sakane, Masato Usui, Yuzuru Yuasa, Yusuke Tamekuni
  • Publication number: 20200376871
    Abstract: A cleaning device cleans a surface of a sheet conveyance member that conveys a sheet in an image forming apparatus which executes image forming processing, using a liquid recording material. The cleaning device includes a cleaning member having a contact surface configured to be brought into contact with the surface of the sheet conveyance member. A contact angle of the contact surface with the recording material is smaller than a contact angle of the surface of the sheet conveyance member with the recording material.
    Type: Application
    Filed: May 28, 2020
    Publication date: December 3, 2020
    Inventors: Kenichi Satake, Hiroatsu Tamai, Takeshi Watanabe, Hiroki Sakane, Yusuke Tamekuni, Masato Usui, Yuzuru Yuasa, Yasuhiro Michishita, Naoto Miyakoshi, Shunsuke Yamasaki, Shinobu Ohata
  • Publication number: 20200376870
    Abstract: A cleaning device includes: a cleaning unit including a cleaning part and a cleaning housing; and a movement mechanism that is capable of moving the cleaning unit between a cleaning position and a mounting and removing position below the cleaning position. The cleaning housing includes a pair of wall portions and a pair of housing shaft portions. The movement mechanism includes a unit housing portion, a pair of support members, a rotation drive unit, and a positioning portion. The positioning portion is configured to be brought into contact with the cleaning unit at the cleaning position and is configured to position the cleaning unit such that the cleaning part is capable of cleaning the conveyance roller.
    Type: Application
    Filed: May 28, 2020
    Publication date: December 3, 2020
    Inventors: Shinobu Ohata, Naoto Miyakoshi, Shunsuke Yamasaki, Hiroatsu Tamai, Yasuhiro Michishita, Takeshi Watanabe, Kenichi Satake, Hiroki Sakane, Masato Usui, Yuzuru Yuasa, Yusuke Tamekuni
  • Publication number: 20200376865
    Abstract: A cleaning device includes a separation and contact mechanism that separates a web from a conveyance roller and brings the web into contact with the conveyance roller, and a controller. The controller includes a conveyed sheet number determination unit and a separation and contact control unit. The conveyed sheet number determination unit monitors a conveyed sheet number of both-surface image forming sheets where image forming processing is applied to both a first surface and a second surface with respect to the sheets conveyed by the conveyance roller, and determines whether or not a cumulative value of the conveyed sheet number has reached a predetermined threshold value. The separation and contact control unit controls the separation and contact mechanism so as to allow the web to be pressed to the conveyance roller by a pressing roller when the cumulative value of the conveyed sheet number has reached the threshold value.
    Type: Application
    Filed: May 27, 2020
    Publication date: December 3, 2020
    Inventors: Masato Usui, Hiroatsu Tamai, Takeshi Watanabe, Kenichi Satake, Hiroki Sakane, Yuzuru Yuasa, Yusuke Tamekuni, Yasuhiro Michishita, Shinobu Ohata, Naoto Miyakoshi, Shunsuke Yamasaki
  • Publication number: 20200376868
    Abstract: A cleaning device includes a cleaning unit and a movement mechanism. The cleaning unit includes: a cleaning part that has a contact surface extending along an axial direction of the conveyance roller and cleans the surface of the conveyance roller by bringing the contact surface into contact with the surface of the conveyance roller from below, and a cleaning housing that supports the cleaning part. The movement mechanism moves the cleaning unit between a cleaning position and a mounting and removing position below the cleaning position. The movement mechanism allows the cleaning part to be brought into contact with the conveyance roller at the cleaning position, allows the cleaning part to be disposed below the conveyance roller in a separated manner at the mounting and removing position and allows the cleaning unit to be mounted on or to be removed from an apparatus body.
    Type: Application
    Filed: May 28, 2020
    Publication date: December 3, 2020
    Inventors: Naoto Miyakoshi, Shinobu Ohata, Shunsuke Yamasaki, Hiroatsu Tamai, Yasuhiro Michishita, Takeshi Watanabe, Kenichi Satake, Hiroki Sakane, Masato Usui, Yuzuru Yuasa, Yusuke Tamekuni
  • Publication number: 20200376872
    Abstract: A cleaning device includes a separation and contact mechanism and a controller. The controller includes a separation and contact control unit, a conveyance roller rotation control unit, and a take-up control unit. The separation and contact control unit controls the separation and contact mechanism so as to allow the web to be pressed to the conveyance roller when the conveyance roller is in a non-conveyable state. The conveyance roller rotation control unit rotates the conveyance roller at a cleaning rotational speed lower than a conveyance-time rotational speed of the conveyance roller in a conveyance state. The take-up control unit allows the take-up roller to perform a take-up operation of taking up the web corresponding to a rotation of a take-up roller plural times at a predetermined time interval within a cleaning time in a state where the conveyance roller is being rotated at the cleaning rotational speed.
    Type: Application
    Filed: May 28, 2020
    Publication date: December 3, 2020
    Inventors: Takeshi Watanabe, Hiroatsu Tamai, Kenichi Satake, Hiroki Sakane, Masato Usui, Yuzuru Yuasa, Yusuke Tamekuni, Yasuhiro Michishita, Shinobu Ohata, Naoto Miyakoshi, Shunsuke Yamasaki
  • Publication number: 20200379400
    Abstract: A cleaning device includes a cleaning unit, a movement mechanism, and a positioning portion. The cleaning unit includes a cleaning part that has a contact surface extending along an axial direction of a conveyance roller and cleans the conveyance roller, and a cleaning housing that supports the cleaning part. The movement mechanism moves the cleaning unit between a cleaning position and a mounting and removing position. The movement mechanism allows the cleaning part to be brought into contact with the conveyance roller at the cleaning position, allows the cleaning part to be disposed below the conveyance roller in a separated manner at the mounting and removing position and allows the cleaning unit to be mounted on or removed from the apparatus body. The positioning portion restricts a relative position between the cleaning part and the conveyance roller by being brought into contact with the cleaning unit.
    Type: Application
    Filed: May 28, 2020
    Publication date: December 3, 2020
    Inventors: Naoto Miyakoshi, Shinobu Ohata, Shunsuke Yamasaki, Hiroatsu Tamai, Yasuhiro Michishita, Takeshi Watanabe, Kenichi Satake, Hiroki Sakane, Masato Usui, Yuzuru Yuasa, Yusuke Tamekuni
  • Publication number: 20200376873
    Abstract: A cleaning device cleans a surface of a sheet conveyance member which conveys a sheet in an image forming apparatus that executes image forming processing using a recording material, the surface carrying a solid substance that originates from the recording material and that adheres to the surface. The cleaning device includes a cleaning member including a contact surface configured to come in contact with the surface of the sheet conveyance member. The contact surface is an irregular surface rougher than the surface of the sheet conveyance member. At cleaning of the surface, the cleaning member makes a relative movement to the surface of the sheet conveyance member. The irregular surface is an irregular surface configured to take away the solid substance adhering to the surface of the sheet conveyance member when the cleaning member makes the relative movement.
    Type: Application
    Filed: May 28, 2020
    Publication date: December 3, 2020
    Inventors: Kenichi Satake, Hiroatsu Tamai, Takeshi Watanabe, Hiroki Sakane, Yusuke Tamekuni, Masato Usui, Yuzuru Yuasa, Yasuhiro Michishita, Naoto Miyakoshi, Shunsuke Yamasaki, Shinobu Ohata
  • Publication number: 20200376867
    Abstract: The cleaning device includes a cleaning unit. The cleaning unit includes a cleaning part having a contact surface brought into contact with a surface of a conveyance roller to clean the surface of the conveyance roller, and a housing that supports the cleaning part. The cleaning part includes a web of a strip shape, the web forming the contact surface that comes in contact with the conveyance roller, a pressing roller that presses the web against the conveyance roller, a feed-out roller that feeds out the web so as to cause a part of the web that comes in contact with the conveyance roller to shift, and a take-up roller that takes up the web. The housing has an opening that receives foreign matter dropping from the vicinity of a nip portion formed between the pressing roller and the conveyance roller.
    Type: Application
    Filed: May 28, 2020
    Publication date: December 3, 2020
    Inventors: Shunsuke Yamasaki, Shinobu Ohata, Naoto Miyakoshi, Hiroatsu Tamai, Yasuhiro Michishita, Takeshi Watanabe, Kenichi Satake, Hiroki Sakane, Masato Usui, Yuzuru Yuasa, Yusuke Tamekuni
  • Publication number: 20200379399
    Abstract: A cleaning device includes a controller configured to control cleaning of a conveyance roller by a web. The controller includes a separation and contact control unit, a conveyance roller rotation control unit, and a take-up control unit. The separation and contact control unit is configured to control a separation and contact mechanism so as to allow the web to be pressed to the conveyance roller when the conveyance roller is in a non-conveyable state. The conveyance roller rotation control unit rotates the conveyance roller in a state where the web is pressed to the conveyance roller. The take-up control unit is configured to allow the take-up roller to perform a take-up operation of taking up the web by rotatably driving the take-up roller plural times at a predetermined time interval within a cleaning time set in advance in a state where the conveyance roller is being rotated.
    Type: Application
    Filed: May 28, 2020
    Publication date: December 3, 2020
    Inventors: Takeshi Watanabe, Hiroatsu Tamai, Kenichi Satake, Hiroki Sakane, Masato Usui, Yuzuru Yuasa, Yusuke Tamekuni, Yasuhiro Michishita, Shinobu Ohata, Naoto Miyakoshi, Shunsuke Yamasaki
  • Publication number: 20200376869
    Abstract: A cleaning device includes a cleaning unit, a movement mechanism, and a unit mounting portion. The cleaning unit includes a cleaning part having a contact surface brought into contact with a surface of a conveyance roller. The movement mechanism moves the cleaning unit between a cleaning position at which the cleaning part comes in contact with the conveyance roller, and a mounting and removing position at which the cleaning part is located below the conveyance roller in a separated manner and the cleaning unit is allowed to be mounted and removed on and from the apparatus body. The unit mounting portion houses the cleaning unit disposed at the mounting and removing position. The cleaning unit is configured such that the cleaning unit in a state of being housed in the unit mounting portion is mounted and removed, together with the processing unit, on and from the apparatus body.
    Type: Application
    Filed: May 28, 2020
    Publication date: December 3, 2020
    Inventors: Shinobu Ohata, Naoto Miyakoshi, Shunsuke Yamasaki, Hiroatsu Tamai, Yasuhiro Michishita, Takeshi Watanabe, Hiroki Sakane, Kenichi Satake, Masato Usui, Yuzuru Yuasa, Yusuke Tamekuni
  • Publication number: 20200379380
    Abstract: A cleaning device includes a sheet conveyance roller, and a cleaning unit that cleans a surface of the sheet conveyance roller. The cleaning unit includes a cleaning member that can come in contact with the surface of the sheet conveyance roller, and a pressing roller that presses the cleaning member against the surface of the sheet conveyance roller. The pressing roller includes a low Young's modulus area formed at least on a part of the pressing roller in a radial direction, the low Young's modulus area having a Young's modulus lower than a Young's modulus of the sheet conveyance roller. When the surface of the sheet conveyance roller is cleaned, the pressing roller is pressed against the sheet conveyance roller so as to elastically deform in the radial direction in a state where the cleaning member is sandwiched between the pressing roller and the sheet conveyance roller.
    Type: Application
    Filed: May 28, 2020
    Publication date: December 3, 2020
    Inventors: Kenichi Satake, Hiroatsu Tamai, Takeshi Watanabe, Hiroki Sakane, Yusuke Tamekuni, Masato Usui, Yuzuru Yuasa, Yasuhiro Michishita, Naoto Miyakoshi, Shunsuke Yamasaki, Shinobu Ohata
  • Patent number: 10017756
    Abstract: What is aimed at is provision of an inexpensive and efficient saccharification method for lignocellulose using a thermostable xylanase and provision of a mutant xylanase that has a substitute amino acid residue, and that exhibits stable activity even under severe conditions in which enzymes easily inactivate, and that provides an initial rate of reaction not significantly reduced as compared to a wild-type xylanase corresponding to the mutant xylanase. Provided is a method of producing a saccharified product of lignocellulose, including contacting a lignocellulosic raw material with a thermostable xylanase, and a mutant xylanase that provides an initial rate of reaction that is at least 70% of that provided by a wild-type xylanase corresponding thereto, that has a xylanase activity after heat treatment at 50° C. for 24 hours that is at least 50% of its xylanase activity before the heat treatment, and that has a substitute amino acid residue.
    Type: Grant
    Filed: January 3, 2017
    Date of Patent: July 10, 2018
    Assignees: MITSUI CHEMICALS, INC., MEIJI SEIKA PHARMA CO., LTD.
    Inventors: Hisaaki Yanai, Hiroki Tamai, Masami Osabe, Fumikazu Yokoyama, Kaoru Okakura, Atsushi Inoue
  • Publication number: 20170107502
    Abstract: What is aimed at is provision of an inexpensive and efficient saccharification method for lignocellulose using a thermostable xylanase and provision of a mutant xylanase that has a substitute amino acid residue, and that exhibits stable activity even under severe conditions in which enzymes easily inactivate, and that provides an initial rate of reaction not significantly reduced as compared to a wild-type xylanase corresponding to the mutant xylanase. Provided is a method of producing a saccharified product of lignocellulose, including contacting a lignocellulosic raw material with a thermostable xylanase, and a mutant xylanase that provides an initial rate of reaction that is at least 70% of that provided by a wild-type xylanase corresponding thereto, that has a xylanase activity after heat treatment at 50° C. for 24 hours that is at least 50% of its xylanase activity before the heat treatment, and that has a substitute amino acid residue.
    Type: Application
    Filed: January 3, 2017
    Publication date: April 20, 2017
    Applicants: MITSUI CHEMICALS, INC., MEIJI SEIKA PHARMA CO., LTD.
    Inventors: Hisaaki YANAI, Hiroki TAMAI, Masami OSABE, Fumikazu YOKOYAMA, Kaoru OKAKURA, Atsushi INOUE
  • Patent number: 9567617
    Abstract: What is aimed at is provision of an inexpensive and efficient saccharification method for lignocellulose using a thermostable xylanase and provision of a mutant xylanase that has a substitute amino acid residue, and that exhibits stable activity even under severe conditions in which enzymes easily inactivate, and that provides an initial rate of reaction not significantly reduced as compared to a wild-type xylanase corresponding to the mutant xylanase. Provided is a method of producing a saccharified product of lignocellulose, including contacting a lignocellulosic raw material with a thermostable xylanase, and a mutant xylanase that provides an initial rate of reaction that is at least 70% of that provided by a wild-type xylanase corresponding thereto, that has a xylanase activity after heat treatment at 50° C. for 24 hours that is at least 50% of its xylanase activity before the heat treatment, and that has a substitute amino acid residue.
    Type: Grant
    Filed: February 12, 2016
    Date of Patent: February 14, 2017
    Assignees: MITSUI CHEMICALS, INC., MEIJI SEIKA PHARMA CO., LTD.
    Inventors: Hisaaki Yanai, Hiroki Tamai, Masami Osabe, Fumikazu Yokoyama, Kaoru Okakura, Atsushi Inoue
  • Patent number: 9394554
    Abstract: What is aimed at is provision of an inexpensive and efficient saccharification method for lignocellulose using a thermostable xylanase and provision of a mutant xylanase that has a substitute amino acid residue, and that exhibits stable activity even under severe conditions in which enzymes easily inactivate, and that provides an initial rate of reaction not significantly reduced as compared to a wild-type xylanase corresponding to the mutant xylanase. Provided is a method of producing a saccharified product of lignocellulose, including contacting a lignocellulosic raw material with a thermostable xylanase, and a mutant xylanase that provides an initial rate of reaction that is at least 70% of that provided by a wild-type xylanase corresponding thereto, that has a xylanase activity after heat treatment at 50° C. for 24 hours that is at least 50% of its xylanase activity before the heat treatment, and that has a substitute amino acid residue.
    Type: Grant
    Filed: November 22, 2012
    Date of Patent: July 19, 2016
    Assignees: Mitsui Chemicals, Inc., Meiji Seika Pharma Co., Ltd.
    Inventors: Hisaaki Yanai, Hiroki Tamai, Masami Osabe, Fumikazu Yokoyama, Kaoru Okakura, Atsushi Inoue
  • Publication number: 20160168555
    Abstract: What is aimed at is provision of an inexpensive and efficient saccharification method for lignocellulose using a thermostable xylanase and provision of a mutant xylanase that has a substitute amino acid residue, and that exhibits stable activity even under severe conditions in which enzymes easily inactivate, and that provides an initial rate of reaction not significantly reduced as compared to a wild-type xylanase corresponding to the mutant xylanase. Provided is a method of producing a saccharified product of lignocellulose, including contacting a lignocellulosic raw material with a thermostable xylanase, and a mutant xylanase that provides an initial rate of reaction that is at least 70% of that provided by a wild-type xylanase corresponding thereto, that has a xylanase activity after heat treatment at 50° C. for 24 hours that is at least 50% of its xylanase activity before the heat treatment, and that has a substitute amino acid residue.
    Type: Application
    Filed: February 12, 2016
    Publication date: June 16, 2016
    Applicants: Mitsui Chemicals, Inc., Meiji Seika Pharma Co., Ltd.
    Inventors: Hisaaki YANAI, Hiroki TAMAI, Masami OSABE, Fumikazu YOKOYAMA, Kaoru OKAKURA, Atsushi INOUE