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).
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Patent number: 9637860Abstract: 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: GrantFiled: April 3, 2015Date of Patent: May 2, 2017Assignee: Seiko Epson CorporationInventor: Kazuma Miyazawa
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Publication number: 20170037550Abstract: 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: ApplicationFiled: August 28, 2014Publication date: February 9, 2017Inventors: Kazuma MIYAZAWA, Shigeo FUJITA
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Patent number: 9476161Abstract: 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: GrantFiled: March 20, 2015Date of Patent: October 25, 2016Assignee: Seiko Epson CorporationInventors: Naotaka Higuchi, Masahide Nakamura, Kazuma Miyazawa
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Publication number: 20160305066Abstract: 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: ApplicationFiled: August 28, 2014Publication date: October 20, 2016Inventors: Kazuma MIYAZAWA, Shigeo FUJITA
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Patent number: 9428862Abstract: 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: GrantFiled: March 20, 2015Date of Patent: August 30, 2016Assignee: Seiko Epson CorporationInventors: Naotaka Higuchi, Masahide Nakamura, Kazuma Miyazawa
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Publication number: 20150292153Abstract: 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: ApplicationFiled: April 3, 2015Publication date: October 15, 2015Inventor: Kazuma MIYAZAWA
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Publication number: 20150275430Abstract: 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: ApplicationFiled: March 20, 2015Publication date: October 1, 2015Inventors: Naotaka HIGUCHI, Masahide NAKAMURA, Kazuma MIYAZAWA
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Publication number: 20150275429Abstract: 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: ApplicationFiled: March 20, 2015Publication date: October 1, 2015Inventors: Naotaka HIGUCHI, Masahide NAKAMURA, Kazuma MIYAZAWA
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Publication number: 20150176204Abstract: 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: ApplicationFiled: December 15, 2014Publication date: June 25, 2015Inventor: Kazuma MIYAZAWA
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Patent number: 8331811Abstract: 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: GrantFiled: October 21, 2009Date of Patent: December 11, 2012Assignee: Seiko Epson CorporationInventors: Kazuma Miyazawa, Tsutomu Sasaki, Ken Ikuma
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Publication number: 20120237266Abstract: 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: ApplicationFiled: February 15, 2012Publication date: September 20, 2012Applicant: SEIKO EPSON CORPORATIONInventors: Kazuma MIYAZAWA, Tsutomu SASAKI, Kazuhiro NISHIYAMA, Naoyuki OKUMURA
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Publication number: 20120219325Abstract: 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: ApplicationFiled: February 14, 2012Publication date: August 30, 2012Applicant: SEIKO EPSON CORPORATIONInventors: Tsutomu SASAKI, Kazuma MIYAZAWA, Kazuhiro NISHIYAMA, Naoyuki OKUMURA, Akihiro GOMI
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Publication number: 20120213542Abstract: 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: ApplicationFiled: February 15, 2012Publication date: August 23, 2012Applicant: SEIKO EPSON CORPORATIONInventors: Yuichiro TSUKADA, Tsutomu SASAKI, Kazuhiro NISHIYAMA, Kazuma MIYAZAWA, Naoyuki OKUMURA
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Publication number: 20120207508Abstract: 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: ApplicationFiled: February 2, 2012Publication date: August 16, 2012Applicant: SEIKO EPSON CORPORATIONInventors: Kazuhiro NISHIYAMA, Kazuma MIYAZAWA, Yoshitomo HIRATA, Tsutomu SASAKI, Naoyuki OKUMURA, Yuichiro TSUKADA
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Publication number: 20120201563Abstract: 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: ApplicationFiled: January 30, 2012Publication date: August 9, 2012Applicant: SEIKO EPSON CORPORATIONInventors: Kazuma MIYAZAWA, Tsutomu SASAKI, Hidehiro TAKANO, Michio SATO, Naoyuki OKUMURA, Satoru MIYAMOTO, Ken IKUMA
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Patent number: 8139983Abstract: 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: GrantFiled: October 29, 2009Date of Patent: March 20, 2012Assignee: Seiko Epson CorporationInventors: Tsutomu Sasaki, Kazuma Miyazawa, Masahiro Fukazawa
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Publication number: 20100111553Abstract: 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: ApplicationFiled: October 29, 2009Publication date: May 6, 2010Applicant: Seiko Epson CorporationInventors: Tsutomu SASAKI, Kazuma MIYAZAWA, Masahiro FUKAZAWA
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Publication number: 20100104302Abstract: 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: ApplicationFiled: October 21, 2009Publication date: April 29, 2010Applicant: Seiko Epson CorporationInventors: Kazuma MIYAZAWA, Tsutomu SASAKI, Ken IKUMA
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Publication number: 20090238607Abstract: 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: ApplicationFiled: March 16, 2009Publication date: September 24, 2009Applicant: Seiko Epson CorporationInventors: Kazuma MIYAZAWA, Ken IKUMA