Patents by Inventor Kazuma Miyazawa

Kazuma Miyazawa 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: 9637860
    Abstract: A sheet manufacturing apparatus includes a defibrating unit configured to defibrate a stock material including fibers, a screening unit configured to allow a defibrated material that has been defibrated at the defibrating unit to pass through a plurality of openings, and a forming unit configured to form a sheet by using a passed material that has passed through the openings. The screening unit has a sieve unit having the openings, and a transferring unit that is located below the sieve unit and with which the cross-sectional area of an internal space in a horizontal direction decreases going downward.
    Type: Grant
    Filed: April 3, 2015
    Date of Patent: May 2, 2017
    Assignee: Seiko Epson Corporation
    Inventor: Kazuma Miyazawa
  • Publication number: 20170037550
    Abstract: Discharge of fiber and other particulate to the outside of a housing unit is prevented. A drum unit in which material including at least fiber passes through apertures; a conveyance unit configured to deposit the airborne material that past the drum unit as a web and convey the web; a housing unit configured to cover the drum unit, contact the web on the downstream side in the conveyance direction of the web, and contact the conveyance unit on the upstream side in the conveyance direction of the web from the downstream contact position; and a forming unit that forms a sheet using the web.
    Type: Application
    Filed: August 28, 2014
    Publication date: February 9, 2017
    Inventors: Kazuma MIYAZAWA, Shigeo FUJITA
  • Patent number: 9476161
    Abstract: A sheet manufacturing apparatus includes: a defibrating unit which defibrates a defibration object including fibers; a cylinder unit which allows a defibrated material which is defibration-processed in the defibrating unit and introduced via an introduction port to pass through a plurality of holes that is on a cylindrical surface by rotating; a supplying unit which is provided with a supply port which supplies additive agents that bond the plurality of fibers in the cylinder portion; and a bonding unit which forms a sheet by bonding the fibers and the additive agents.
    Type: Grant
    Filed: March 20, 2015
    Date of Patent: October 25, 2016
    Assignee: Seiko Epson Corporation
    Inventors: Naotaka Higuchi, Masahide Nakamura, Kazuma Miyazawa
  • Publication number: 20160305066
    Abstract: Discharge of fiber and other particulate to the outside of a housing unit is prevented. A drum unit includes a screen with numerous apertures through which airborne material including at least fiber passes, and a cylinder section without apertures, disposed to a rotating cylinder; a housing unit encloses the screen part of the drum unit inside and contacts the cylinder section; and a forming unit forms sheets using material that passes through the apertures.
    Type: Application
    Filed: August 28, 2014
    Publication date: October 20, 2016
    Inventors: Kazuma MIYAZAWA, Shigeo FUJITA
  • Patent number: 9428862
    Abstract: A sheet manufacturing apparatus includes: a defibrating unit which defibrates a defibration object including fibers; a cylinder unit which allows a defibrated material which is defibration-processed in the defibrating unit to pass through a plurality of holes that is on a cylindrical surface by rotating; a housing unit which covers the cylinder unit so that the plurality of holes is included therein; a supplying unit which supplies additive agents that bonds the plurality of fibers, on an outer side of the cylinder unit to an inner side of the housing unit; and a bonding unit which forms a sheet by bonding the fibers and the additive agents.
    Type: Grant
    Filed: March 20, 2015
    Date of Patent: August 30, 2016
    Assignee: Seiko Epson Corporation
    Inventors: Naotaka Higuchi, Masahide Nakamura, Kazuma Miyazawa
  • Publication number: 20150292153
    Abstract: A sheet manufacturing apparatus includes a defibrating unit configured to defibrate a stock material including fibers, a screening unit configured to allow a defibrated material that has been defibrated at the defibrating unit to pass through a plurality of openings, and a forming unit configured to form a sheet by using a passed material that has passed through the openings. The screening unit has a sieve unit having the openings, and a transferring unit that is located below the sieve unit and with which the cross-sectional area of an internal space in a horizontal direction decreases going downward.
    Type: Application
    Filed: April 3, 2015
    Publication date: October 15, 2015
    Inventor: Kazuma MIYAZAWA
  • Publication number: 20150275430
    Abstract: A sheet manufacturing apparatus includes: a defibrating unit which defibrates a defibration object including fibers; a cylinder unit which allows a defibrated material which is defibration-processed in the defibrating unit and introduced via an introduction port to pass through a plurality of holes that is on a cylindrical surface by rotating; a supplying unit which is provided with a supply port which supplies additive agents that bond the plurality of fibers in the cylinder portion; and a bonding unit which forms a sheet by bonding the fibers and the additive agents.
    Type: Application
    Filed: March 20, 2015
    Publication date: October 1, 2015
    Inventors: Naotaka HIGUCHI, Masahide NAKAMURA, Kazuma MIYAZAWA
  • Publication number: 20150275429
    Abstract: A sheet manufacturing apparatus includes: a defibrating unit which defibrates a defibration object including fibers; a cylinder unit which allows a defibrated material which is defibration-processed in the defibrating unit to pass through a plurality of holes that is on a cylindrical surface by rotating; a housing unit which covers the cylinder unit so that the plurality of holes is included therein; a supplying unit which supplies additive agents that bonds the plurality of fibers, on an outer side of the cylinder unit to an inner side of the housing unit; and a bonding unit which forms a sheet by bonding the fibers and the additive agents.
    Type: Application
    Filed: March 20, 2015
    Publication date: October 1, 2015
    Inventors: Naotaka HIGUCHI, Masahide NAKAMURA, Kazuma MIYAZAWA
  • Publication number: 20150176204
    Abstract: A sheet manufacturing apparatus includes a classifier unit configured to classify by air flow an introduced material that has been introduced, a screening unit configured to allow a classified material, which comprises fibers, that has been classified by the classifier unit to pass through a plurality of openings to screen the classified material, and a forming unit configured to use a passed material that has passed through the openings to form a sheet. The classified material is supplied to the screening unit by the air flow.
    Type: Application
    Filed: December 15, 2014
    Publication date: June 25, 2015
    Inventor: Kazuma MIYAZAWA
  • Patent number: 8331811
    Abstract: A developing device includes: a developer storage portion which stores a liquid developer including toner and carrier liquid; a first coating member which rotates and coats the liquid developer stored in the developer storage portion; a second coating member which comes into contact with the first coating member and rotates in a direction opposite to that of the first coating member and slower than a rotary peripheral velocity of the first coating member; and a developer supporting body which comes into contact with the second coating member and rotates in the same direction as that of the second coating member and faster than a rotary peripheral velocity of the second coating member.
    Type: Grant
    Filed: October 21, 2009
    Date of Patent: December 11, 2012
    Assignee: Seiko Epson Corporation
    Inventors: Kazuma Miyazawa, Tsutomu Sasaki, Ken Ikuma
  • Publication number: 20120237266
    Abstract: A driving force produced by a first driving motor is transmitted to a developing roller and an intermediate application roller by a first drive transmission unit, and the developing roller and the intermediate application roller are rotated as a result. The developing roller and the intermediate application roller thus take the first driving motor as a drive source, and receive the driving force from the first driving motor via the same first drive transmission unit. As a result, the phases of the fluctuation in a rotational component of the first driving motor and the cyclic fluctuation of gear interlocking match, which reduces a rotational velocity difference between the developing roller and the intermediate application roller.
    Type: Application
    Filed: February 15, 2012
    Publication date: September 20, 2012
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Kazuma MIYAZAWA, Tsutomu SASAKI, Kazuhiro NISHIYAMA, Naoyuki OKUMURA
  • Publication number: 20120219325
    Abstract: In a developing device which supplies a liquid developer to a developer holder roller using a supply member and performs development using the liquid developer, and an image forming apparatus including the developing device, a developer holder cleaning unit which cleans the developer holder roller and recovers the liquid developer in order to prevent the liquid developer after development from being adhered to the supply member, a supply member cleaning unit which cleans the supply member and recovers the liquid developer, a recovery path member which is disposed above the supply member in a vertical direction and receives the liquid developer recovered by the developer holder cleaning unit, and a recovery unit which is disposed above the recovery path member in the vertical direction and stores the liquid developer moved to the recovery path member and the liquid developer recovered by the supply member cleaning unit are provided.
    Type: Application
    Filed: February 14, 2012
    Publication date: August 30, 2012
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Tsutomu SASAKI, Kazuma MIYAZAWA, Kazuhiro NISHIYAMA, Naoyuki OKUMURA, Akihiro GOMI
  • Publication number: 20120213542
    Abstract: A developing roller which comes into contact with a latent image carrier drum on a first side with respect to an imaginary vertical plane passing through the rotation center of the latent image carrier drum, thereby developing a latent image which is carried on the latent image carrier drum by a liquid developer that includes toner and carrier liquid is provided, and a squeeze roller which comes into contact with the latent image carrier drum developed by the developing roller on a second side on the opposite side to the first side with respect to the imaginary vertical plane further on the upper side in the vertical direction than an imaginary horizontal plane passing through the rotation center of the latent image carrier drum and perpendicular to the imaginary vertical plane, thereby squeezing an image developed to the latent image carrier drum is provided.
    Type: Application
    Filed: February 15, 2012
    Publication date: August 23, 2012
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Yuichiro TSUKADA, Tsutomu SASAKI, Kazuhiro NISHIYAMA, Kazuma MIYAZAWA, Naoyuki OKUMURA
  • Publication number: 20120207508
    Abstract: The image forming apparatus includes an image carrier drum on which a latent image is formed; a development unit which includes a development roller coming into contact with the image carrier drum on an upward side of a virtual horizontal plane, which is perpendicular to a virtual vertical plane passing through a rotation center of the image carrier drum, in a vertical direction and developing the latent image formed on the image carrier drum with a liquid developer containing toner and a carrier liquid; a squeeze unit which comes into contact with the image developed by the development roller on the upward side of the virtual horizontal plane in the vertical direction and includes a squeeze roller squeezing the image; and a transfer unit which transfers the image squeezed by the squeeze roller to a transfer member on a downward side of the virtual horizontal plane in the vertical direction.
    Type: Application
    Filed: February 2, 2012
    Publication date: August 16, 2012
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Kazuhiro NISHIYAMA, Kazuma MIYAZAWA, Yoshitomo HIRATA, Tsutomu SASAKI, Naoyuki OKUMURA, Yuichiro TSUKADA
  • Publication number: 20120201563
    Abstract: Provided is an image forming apparatus including: a latent image carrying drum on which a latent image is formed; a charging section that includes a corona charger charging the latent image carrying drum and an air flow duct formed in the corona charger so as to be long in the rotation axis direction of the latent image carrying drum so that air flows in the corona charger; a developing section that is disposed above the air flow duct in the vertical direction, is formed so as to be shorter than the air flow duct in the rotation axis direction of the latent image carrying drum, and develops the latent image formed on the latent image carrying drum by a liquid developing agent including toner and a carrier liquid.
    Type: Application
    Filed: January 30, 2012
    Publication date: August 9, 2012
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Kazuma MIYAZAWA, Tsutomu SASAKI, Hidehiro TAKANO, Michio SATO, Naoyuki OKUMURA, Satoru MIYAMOTO, Ken IKUMA
  • Patent number: 8139983
    Abstract: A developing device includes a developer storage portion that stores a liquid developer including toner and carrier liquid. A first coating member rotates and coats the liquid developer stored in the developer storage portion. A second coating member contacts the first coating member and rotates in a direction opposite to that of the first coating member. A developer supporting body contacts the second coating member and rotates in the same direction as that of the second coating member. A contact member contacts the liquid developer coated on the second coating member by the first coating member.
    Type: Grant
    Filed: October 29, 2009
    Date of Patent: March 20, 2012
    Assignee: Seiko Epson Corporation
    Inventors: Tsutomu Sasaki, Kazuma Miyazawa, Masahiro Fukazawa
  • Publication number: 20100111553
    Abstract: A developing device includes a developer storage portion that stores a liquid developer including toner and carrier liquid. A first coating member rotates and coats the liquid developer stored in the developer storage portion. A second coating member contacts the first coating member and rotates in a direction opposite to that of the first coating member. A developer supporting body contacts the second coating member and rotates in the same direction as that of the second coating member. A contact member contacts the liquid developer coated on the second coating member by the first coating member.
    Type: Application
    Filed: October 29, 2009
    Publication date: May 6, 2010
    Applicant: Seiko Epson Corporation
    Inventors: Tsutomu SASAKI, Kazuma MIYAZAWA, Masahiro FUKAZAWA
  • Publication number: 20100104302
    Abstract: A developing device includes: a developer storage portion which stores a liquid developer including toner and carrier liquid; a first coating member which rotates and coats the liquid developer stored in the developer storage portion; a second coating member which comes into contact with the first coating member and rotates in a direction opposite to that of the first coating member and slower than a rotary peripheral velocity of the first coating member; and a developer supporting body which comes into contact with the second coating member and rotates in the same direction as that of the second coating member and faster than a rotary peripheral velocity of the second coating member.
    Type: Application
    Filed: October 21, 2009
    Publication date: April 29, 2010
    Applicant: Seiko Epson Corporation
    Inventors: Kazuma MIYAZAWA, Tsutomu SASAKI, Ken IKUMA
  • Publication number: 20090238607
    Abstract: A development device includes a developer reservoir that stores liquid developer containing toner and carrier liquid, a supply port that is arranged at the developer reservoir to supply the liquid developer to the developer reservoir, a supply roller that has helical grooves and supplies the liquid developer stored in the developer reservoir and a developer carrier that is supplied with the liquid developer by the supply roller and carries the supplied liquid developer, and the supply port being arranged in the direction opposite to the direction of conveyance by the helical grooves of liquid developer stored in the developer reservoir relative to the axial center of the supply roller.
    Type: Application
    Filed: March 16, 2009
    Publication date: September 24, 2009
    Applicant: Seiko Epson Corporation
    Inventors: Kazuma MIYAZAWA, Ken IKUMA