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).
-
Publication number: 20240102243Abstract: There is provided a sheet manufacturing apparatus including: an accumulation section that accumulates a material containing fibers by an air flow to form a web; a humidification section that applies moisture from one surface side of the web; and a pressurization section that pressurizes the humidified web at a pressurization location to form a sheet, in which the pressurization section includes a first roller that comes into contact with one surface of the web at the pressurization location and a second roller that comes into contact with the other surface of the web at the pressurization location, the web is transported such that the one surface of the web comes into contact with a surface of the first roller over a predetermined length starting from the pressurization location, and the first roller has a heating mechanism, and the first roller heats the web while the one surface of the web is in contact with the surface of the first roller.Type: ApplicationFiled: September 13, 2023Publication date: March 28, 2024Inventors: Hidemasa KANADA, Yoshiyuki NAGAI, Masanao FUKASAWA, Kazuma MIYAZAWA, Masahide NAKAMURA
-
Publication number: 20240093430Abstract: There is provided a sheet manufacturing apparatus including: an accumulation section that accumulates a material containing fibers by an air flow to form a web; a humidification section that applies moisture from one surface side of the web; and a pressurization section that pressurizes the humidified web to form a sheet, in which the pressurization section includes a first roller that comes into contact with one surface of the web and a second roller that comes into contact with the other surface of the web, and a surface of the first roller is harder than a surface of the second roller.Type: ApplicationFiled: September 13, 2023Publication date: March 21, 2024Inventors: Hidemasa KANADA, Yoshiyuki NAGAI, Masanao FUKASAWA, Kazuma MIYAZAWA, Masahide NAKAMURA
-
Patent number: 11788230Abstract: A paper producing apparatus includes: a sieve portion having a plurality of openings; a web forming portion having a deposition surface on which a material passing through the openings and containing fibers is deposited, the web forming portion forming a web on the deposition surface; a sheet forming portion that processes the web into a sheet; and a material supply pipe through which transport airflow containing the material is supplied to an inside of the sieve portion.Type: GrantFiled: September 27, 2021Date of Patent: October 17, 2023Assignee: Seiko Epson CorporationInventors: Kazuma Miyazawa, Naoya Sato
-
Patent number: 11384482Abstract: A web manufacturing apparatus includes a transport section configured to transport a web containing fiber, a web humidifier configured to humidify the web, and a control section configured to control operation of the transport section and the web humidifier. When transportation of the web by the transport section is stopped, the control section causes the transport section to recommence transportation of the web after the web is humidified by the web humidifier. The control section may also cause the web humidifier to stop humidification of the web after the web humidifier starts humidification of the web and a predetermined duration elapses.Type: GrantFiled: November 6, 2019Date of Patent: July 12, 2022Assignee: SEIKO EPSON CORPORATIONInventors: Isao Inaba, Masahide Nakamura, Kazuma Miyazawa, Yuki Oguchi, Isamu Arai
-
Patent number: 11338471Abstract: A sheet manufacturing apparatus includes a coarse crushing portion that crushes a raw material containing a fiber into coarse crushed pieces, a defibrating portion that defibrates the coarse crushed pieces into a defibrated material, a sieve portion that includes a plurality of openings, a sheet forming portion that uses the defibrated material passing through the opening of the sieve portion to form a sheet, and a transport passage that transports the defibrated material, which has not passed through the opening of the sieve portion, between the coarse crushing portion and the defibrating portion.Type: GrantFiled: January 24, 2017Date of Patent: May 24, 2022Assignee: Seiko Epson CorporationInventors: Kazuma Miyazawa, Toshiaki Yamagami, Masahide Nakamura
-
Patent number: 11326305Abstract: A fibrous body accumulating device includes: a drum having an opening for releasing a material containing fibers and rotating around a central axis; and a first dispersion member disposed in the drum and at a position unevenly distributed vertically below the central axis, and dispersing the material in the drum. Preferably, the fibrous body accumulating device further includes a second dispersion member disposed in the drum and at a position unevenly distributed vertically above the central axis, and dispersing the material in the drum.Type: GrantFiled: February 5, 2021Date of Patent: May 10, 2022Assignee: Seiko Epson CorporationInventor: Kazuma Miyazawa
-
Patent number: 11293139Abstract: A web manufacturing apparatus includes a defibration section that includes a rotating blade and is configured to defibrate a material containing fiber, a detection section configured to detect an electric charge amount of a defibrated material obtained by the defibration section, and a control section configured to control operation of the defibration section. The control section includes a first mode in which a revolution speed of the rotating blade is set based on a detection result of the detection section.Type: GrantFiled: November 7, 2019Date of Patent: April 5, 2022Assignee: SEIKO EPSON CORPORATIONInventors: Hirofumi Nakata, Kazuma Miyazawa, Sadaharu Komori, Masahide Nakamura, Yuki Oguchi, Soichiro Seo, Yoshiyuki Nagai
-
Publication number: 20220098794Abstract: A paper producing apparatus includes: a sieve portion having a plurality of openings; a web forming portion having a deposition surface on which a material passing through the openings and containing fibers is deposited, the web forming portion forming a web on the deposition surface; a sheet forming portion that processes the web into a sheet; and a material supply pipe through which transport airflow containing the material is supplied to an inside of the sieve portion.Type: ApplicationFiled: September 27, 2021Publication date: March 31, 2022Inventors: Kazuma MIYAZAWA, Naoya SATO
-
Patent number: 11090591Abstract: A swirling flow generation device includes a first pipe having a first pipe axis and through which gas passes, a second pipe having a second pipe axis in a direction different from the first pipe axis and communicates with downstream of the first pipe, and an airflow changing unit provided in the first pipe and having an opening eccentric from the first pipe axis. A swirling flow is formed in the second pipe as the center of the airflow passed through the opening flows into the second pipe at a position that is eccentric from the second pipe axis.Type: GrantFiled: December 26, 2019Date of Patent: August 17, 2021Assignee: Seiko Epson CorporationInventors: Kazuma Miyazawa, Kunihiro Sasaoka
-
Publication number: 20210246612Abstract: A fibrous body accumulating device includes: a drum having an opening for releasing a material containing fibers and rotating around a central axis; and a first dispersion member disposed in the drum, extending in a direction along the central axis, and dispersing the material in the drum, in which the first dispersion member has a first portion having the material with a high dispersion ability and a second portion having the material with a lower dispersion ability than the first portion, the first portion and the second portion being disposed at different positions in a direction along the central axis.Type: ApplicationFiled: February 5, 2021Publication date: August 12, 2021Inventors: Kazuma MIYAZAWA, Katsuhito GOMI
-
Publication number: 20210246611Abstract: A fibrous body accumulating device includes: a drum having an opening for releasing a material containing fibers and rotating around a central axis; and a first dispersion member disposed in the drum and at a position unevenly distributed vertically below the central axis, and dispersing the material in the drum. Preferably, the fibrous body accumulating device further includes a second dispersion member disposed in the drum and at a position unevenly distributed vertically above the central axis, and dispersing the material in the drum.Type: ApplicationFiled: February 5, 2021Publication date: August 12, 2021Inventor: Kazuma MIYAZAWA
-
Publication number: 20210206019Abstract: A sheet manufacturing apparatus includes a coarse crushing portion that crushes a raw material containing a fiber into coarse crushed pieces, a defibrating portion that defibrates the coarse crushed pieces into a defibrated material, a sieve portion that includes a plurality of openings, a sheet forming portion that uses the defibrated material passing through the opening of the sieve portion to form a sheet, and a transport passage that transports the defibrated material, which has not passed through the opening of the sieve portion, between the coarse crushing portion and the defibrating portion.Type: ApplicationFiled: January 24, 2017Publication date: July 8, 2021Inventors: Kazuma MIYAZAWA, Toshiaki YAMAGAMI, Masahide NAKAMURA
-
Publication number: 20200206668Abstract: A swirling flow generation device includes a first pipe having a first pipe axis and through which gas passes, a second pipe having a second pipe axis in a direction different from the first pipe axis and communicates with downstream of the first pipe, and an airflow changing unit provided in the first pipe and having an opening eccentric from the first pipe axis. A swirling flow is formed in the second pipe as the center of the airflow passed through the opening flows into the second pipe at a position that is eccentric from the second pipe axis.Type: ApplicationFiled: December 26, 2019Publication date: July 2, 2020Inventors: Kazuma MIYAZAWA, Kunihiro SASAOKA
-
Publication number: 20200149219Abstract: A web manufacturing apparatus includes a defibration section that includes a rotating blade and is configured to defibrate a material containing fiber, a detection section configured to detect an electric charge amount of a defibrated material obtained by the defibration section, and a control section configured to control operation of the defibration section. The control section includes a first mode in which a revolution speed of the rotating blade is set based on a detection result of the detection section.Type: ApplicationFiled: November 7, 2019Publication date: May 14, 2020Applicant: SEIKO EPSON CORPORATIONInventors: Hirofumi NAKATA, Kazuma MIYAZAWA, Sadaharu KOMORI, Masahide NAKAMURA, Yuki OGUCHI, Soichiro SEO, Yoshiyuki NAGAI
-
Publication number: 20200141059Abstract: A web manufacturing apparatus includes a transport section configured to transport a web containing fiber, a web humidifier configured to humidify the web, and a control section configured to control operation of the transport section and the web humidifier. When transportation of the web by the transport section is stopped, the control section causes the transport section to recommence transportation of the web after the web is humidified by the web humidifier. The control section may also cause the web humidifier to stop humidification of the web after the web humidifier starts humidification of the web and a predetermined duration elapses.Type: ApplicationFiled: November 6, 2019Publication date: May 7, 2020Applicant: SEIKO EPSON CORPORATIONInventors: Isao INABA, Masahide NAKAMURA, Kazuma MIYAZAWA, Yuki OGUCHI, Isamu ARAI
-
Publication number: 20200077216Abstract: A vibration plate manufacturing device including: a defibration unit which defibrates a raw material including fibers; a mixing unit which mixes a binding material for binding the fibers to each other, to a defibrated material defibrated by the defibration unit; a second web formation unit which accumulates a mixture mixed by the mixing unit; and a molding unit which forms the second web accumulated in second web formation unit into a vibration plate by a molding process including pressing and heating.Type: ApplicationFiled: August 27, 2019Publication date: March 5, 2020Inventors: Satomi YOSHIOKA, Masahiro UCHIDA, Kazuma MIYAZAWA
-
Patent number: 10246824Abstract: 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: GrantFiled: August 28, 2014Date of Patent: April 2, 2019Assignee: Seiko Epson CorporationInventors: Kazuma Miyazawa, Shigeo Fujita
-
Publication number: 20180347086Abstract: To manufacture sheets of uniform quality, a sheet manufacturing apparatus has a drum with a plurality of holes; a housing covering the drum; a conveyor on which material including fiber that has passed through the holes accumulates as a web, and which conveys the accumulated web; a first roller that is a first roller disposed to contact the web conveyed by the conveyor, and has asperities on its outside surface; and a first seal disposed to a first wall of the first housing to contact an outside surface of the first roller.Type: ApplicationFiled: November 18, 2016Publication date: December 6, 2018Inventors: Naotaka HIGUCHI, Shigeo FUJITA, Kazuma MIYAZAWA
-
Patent number: 10145046Abstract: 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: GrantFiled: August 28, 2014Date of Patent: December 4, 2018Assignee: Seiko Epson CorporationInventors: Kazuma Miyazawa, Shigeo Fujita
-
Patent number: 9776213Abstract: 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: GrantFiled: December 15, 2014Date of Patent: October 3, 2017Assignee: Seiko Epson CorporationInventor: Kazuma Miyazawa