Patents by Inventor Toshiyuki Kabata

Toshiyuki Kabata 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: 20220075310
    Abstract: A method for manufacturing a removable information sheet includes: forming a toner image on a recording medium; applying an energy-ray-curable pressure-sensitive composition precursor onto the medium to form an energy-ray-curable pressure-sensitive composition precursor layer; irradiating, with an energy ray, the medium to cure the layer and form an energy-ray-curable pressure-sensitive composition; and attaching faces with the composition and pressure-bonding the faces. A region size of a toner-image flat part is 200 ?m or less in the image, which is determined by a measurement method including: defining a site at a depth of 2 ?m or more from a surface of a solid part of the image as a recess; defining a site other than the recess as the flat part; acquiring and binarizing a micrograph of the solid part; drawing circles out of contact with the recess; and defining a largest circle diameter as the size of the flat part.
    Type: Application
    Filed: September 8, 2021
    Publication date: March 10, 2022
    Inventors: Toshiyuki KABATA, Kaori HEMMI, Akira AZAMI, Takahiro SUZUKI
  • Publication number: 20220009210
    Abstract: Metallic paper for electrophotography is provided. The metallic paper comprises a substrate, a metallic luster layer over the substrate, and a polyester at a surface of the metallic paper. A ratio B/A is 0.90 or less, where A and B respectively represent a peak area A and a peak area B in an infrared spectrum of the metallic paper obtained by an ATR method with a crystal of Ge, an incident angle of 45°, and one time of reflection. The peak area A ranges from 1709.586 to 1741.406 cm?1, the peak area B ranges from 1630.519 to 1670.052 cm?1, and a baseline of the peaks ranges from 1593.878 to 1850.364 cm?1.
    Type: Application
    Filed: June 21, 2021
    Publication date: January 13, 2022
    Applicant: Ricoh Company, Ltd.
    Inventor: Toshiyuki KABATA
  • Patent number: 11036168
    Abstract: An image forming method for an image forming apparatus having a fixing rotator and a pressure rotator opposite the fixing rotator includes transferring white toner and color toner onto a surface of a metallic sheet. The metallic sheet has a thermal conductivity of 0.34 W/m·K or less as measured by hot-wire method. The transferring process forms an unfixed color toner layer layered on an unfixed white toner layer on the metallic sheet. Further, the method includes conveying the metallic sheet, with the surface on which the white toner layer and the color toner layer being transferred facing the fixing rotator, between the fixing rotator heated and the pressure rotator to fix the white toner layer and the color toner layer onto the metallic sheet.
    Type: Grant
    Filed: March 11, 2020
    Date of Patent: June 15, 2021
    Assignee: Ricoh Company, Ltd.
    Inventors: Toshiyuki Kabata, Megumi Arai, Akira Azami, Toshiaki Motohashi
  • Patent number: 10877436
    Abstract: A particle collecting device includes an ozone exhaust path and an electrostatic filter. The ozone exhaust path is configured to exhaust ozone generated by an ozone generation device. The electrostatic filter is in a course of the ozone exhaust path.
    Type: Grant
    Filed: August 2, 2019
    Date of Patent: December 29, 2020
    Assignee: Ricoh Company, Ltd.
    Inventors: Toshiyuki Kabata, Shoji Sasaki
  • Publication number: 20200301328
    Abstract: An image forming method for an image forming apparatus having a fixing rotator and a pressure rotator opposite the fixing rotator includes transferring white toner and color toner onto a surface of a metallic sheet having a thermal conductivity of 0.34 W/m·K or less as measured by hot-wire method to form an unfixed color toner layer layered on an unfixed white toner layer on the metallic sheet and conveying the metallic sheet, with the surface on which the white toner layer and the color toner layer are transferred facing the fixing rotator, between the fixing rotator heated and the pressure rotator to fix the white toner layer and the color toner layer onto the metallic sheet.
    Type: Application
    Filed: March 11, 2020
    Publication date: September 24, 2020
    Inventors: Toshiyuki KABATA, Megumi ARAI, Akira AZAMI, Toshiaki MOTOHASHI
  • Publication number: 20200050144
    Abstract: A particle collecting device includes an ozone exhaust path and an electrostatic filter. The ozone exhaust path is configured to exhaust ozone generated by an ozone generation device. The electrostatic filter is in a course of the ozone exhaust path.
    Type: Application
    Filed: August 2, 2019
    Publication date: February 13, 2020
    Applicant: RICOH COMPANY, LTD.
    Inventors: Toshiyuki Kabata, Shoji Sasaki
  • Patent number: 10324388
    Abstract: A toner including base particles and external additives on the base particles, the toner satisfying Conditions 1 and 2 defined in the specification, when a number distribution D of particle diameters of powder particles B generated from one base particle A is calculated from a density a of the base particles A and a density b of the powder particles B, where the base particles A and the powder particles B are deposited on an adhesive area and mica respectively by feeding the toner into a vacuumed space from an inlet, and allowing the toner to crush against a surface of a substrate having the adhesive area composed of a carbon tape, and the mica disposed in a manner that the surface is orthogonal to a direction connecting between center of the vacuumed space and center of the inlet, Powder particles B: particles detached from the base particles.
    Type: Grant
    Filed: March 13, 2017
    Date of Patent: June 18, 2019
    Assignee: Ricoh Company, Ltd.
    Inventors: Toshiyuki Kabata, Takashi Bisaiji, Maiko Koeda, Katsunori Kurose
  • Patent number: 10261432
    Abstract: An ester wax is provided. The ester wax includes a long-chain aliphatic ester represented by the following formula: R—COO—R? wherein R represents an alky group having 13 to 23 carbon atoms and R? represents an alkyl group having 18 to 22 carbon atoms. The ester wax further includes an aliphatic alcohol having 18 to 22 carbon atoms in an amount less than 3% by mass based on a total mass of the ester wax.
    Type: Grant
    Filed: March 7, 2017
    Date of Patent: April 16, 2019
    Assignee: Ricoh Company, Ltd.
    Inventors: Toshiyuki Kabata, Hiroyuki Shimada, Takeshi Shibuya
  • Patent number: 10162283
    Abstract: An image forming apparatus includes an exhaust duct to guide air inside the image forming apparatus to an outside of the image forming apparatus. A positive ion generator emits a positive ion into the exhaust duct. A negative ion generator emits a negative ion into the exhaust duct. The negative ion generator is shifted from the positive ion generator in one of an air flow direction of the air moving inside the exhaust duct and a direction perpendicular to the air flow direction.
    Type: Grant
    Filed: July 12, 2017
    Date of Patent: December 25, 2018
    Assignee: Ricoh Company, Ltd.
    Inventors: Hiroyuki Shimada, Toshiyuki Kabata, Takashi Fujita, Hiroshi Seo
  • Publication number: 20180237723
    Abstract: A drive device includes a plurality of gears; and a grease composition that is held on a tooth flank of at least one gear of the gears. The at least one gear is made of a resin. The grease composition contains a hydrocarbon base oil, lithium soap serving as a thickener, and olefin resin powder. A weight ratio between the hydrocarbon base oil and the lithium soap in the grease composition is in a range of 94.5:5.5 to 96.0:4.0. A consistency of the grease composition is in a range of 360 to 400.
    Type: Application
    Filed: April 20, 2018
    Publication date: August 23, 2018
    Applicants: Ricoh Company, Ltd., Dow Corning Toray Co., Ltd.
    Inventors: Toshiyuki KABATA, Kumiko SEO, Masahiro ISHIDA, Naoki MATSUDA, Teruyoshi TANAKA
  • Patent number: 9982213
    Abstract: A drive device includes a plurality of gears; and a grease composition that is held on a tooth flank of at least one gear of the gears. The at least one gear is made of a resin. The grease composition contains a hydrocarbon base oil, lithium soap serving as a thickener, and olefin resin powder. A weight ratio between the hydrocarbon base oil and the lithium soap in the grease composition is in a range of 94.5:5.5 to 96.0:4.0. A consistency of the grease composition is in a range of 360 to 400.
    Type: Grant
    Filed: May 20, 2015
    Date of Patent: May 29, 2018
    Assignee: Ricoh Company, Limited
    Inventors: Toshiyuki Kabata, Kumiko Seo, Masahiro Ishida, Naoki Matsuda, Teruyoshi Tanaka
  • Patent number: 9951862
    Abstract: A drive device includes a gear having a hole; a shaft that passes through the hole; and a grease composition that is held in a clearance between the shaft and an inner peripheral surface of the hole. The gear rotates on a peripheral surface of the shaft. At least one of the gear and the shaft is made of a resin. The clearance is in a range of 10 to 110 ?m. The grease composition contains a hydrocarbon base oil and lithium soap serving as a thickener. A weight ratio of the hydrocarbon base oil to the lithium soap is in a range of 94.5:5.5 to 96.0:4.0. A consistency of the grease composition is in a range of 360 to 400.
    Type: Grant
    Filed: May 22, 2015
    Date of Patent: April 24, 2018
    Assignee: RICOH COMPANY, LIMITED
    Inventors: Toshiyuki Kabata, Kumiko Seo, Masahiro Ishida, Naoki Matsuda, Teruyoshi Tanaka
  • Publication number: 20180024462
    Abstract: An image forming apparatus includes an exhaust duct to guide air inside the image forming apparatus to an outside of the image forming apparatus. A positive ion generator emits a positive ion into the exhaust duct. A negative ion generator emits a negative ion into the exhaust duct. The negative ion generator is shifted from the positive ion generator in one of an air flow direction of the air moving inside the exhaust duct and a direction perpendicular to the air flow direction.
    Type: Application
    Filed: July 12, 2017
    Publication date: January 25, 2018
    Inventors: Hiroyuki SHIMADA, Toshiyuki Kabata, Takashi Fujita, Hiroshi Seo
  • Patent number: 9783755
    Abstract: A drive device includes a slide bearing; a shaft that passes through the slide bearing; a gear that is fixed to the shaft; and a grease composition that is held in a clearance between the slide bearing and the shaft. At least one of the slide bearing and the shaft is made of a resin. The clearance is in a range of 10 to 110 ?m. The grease composition contains a hydrocarbon base oil and lithium soap serving as a thickener. A weight ratio of the hydrocarbon base oil to the lithium soap is in a range of 94.5:5.5 to 96.0:4.0. A consistency of the grease composition is in a range of 360 to 400.
    Type: Grant
    Filed: May 19, 2015
    Date of Patent: October 10, 2017
    Assignees: Ricoh Company, Ltd., Dow Corning Toray Co., Ltd.
    Inventors: Toshiyuki Kabata, Kumiko Seo, Masahiro Ishida, Naoki Matsuda, Teruyoshi Tanaka
  • Patent number: 9778605
    Abstract: A heater lamp for fixation and a method of producing the heater lamp are provided. The heater lamp includes a heat generator and a protective casing to cover the heat generator, in which an amount of carbon in an external surface of the protective casing as detected by an X-ray photoelectron spectroscopic method is equal to or less than 12 atomic %. The method of producing a heater lamp for fixation includes preparing a heat generator; preparing a protective casing to cover the heat generator; and heating the heat generator in an atmosphere containing oxygen gas.
    Type: Grant
    Filed: May 20, 2014
    Date of Patent: October 3, 2017
    Assignee: Ricoh Company, Ltd.
    Inventors: Toshiyuki Kabata, Hideyuki Yasufuku, Hiroyuki Shimada, Kazumi Kuwata, Takeshi Shibuya
  • Publication number: 20170269489
    Abstract: A toner including base particles and external additives on the base particles, the toner satisfying Conditions 1 and 2 defined in the specification, when a number distribution D of particle diameters of powder particles B generated from one base particle A is calculated from a density a of the base particles A and a density b of the powder particles B, where the base particles A and the powder particles B are deposited on an adhesive area and mica respectively by feeding the toner into a vacuumed space from an inlet, and allowing the toner to crush against a surface of a substrate having the adhesive area composed of a carbon tape, and the mica disposed in a manner that the surface is orthogonal to a direction connecting between center of the vacuumed space and center of the inlet, Powder particles B: particles detached from the base particles.
    Type: Application
    Filed: March 13, 2017
    Publication date: September 21, 2017
    Inventors: Toshiyuki KABATA, Takashi BISAIJI, Maiko KOEDA, Katsunori KUROSE
  • Publication number: 20170261876
    Abstract: An ester wax is provided. The ester wax includes a long-chain aliphatic ester represented by the following formula: R—COO—R? wherein R represents an alky group having 13 to 23 carbon atoms and R? represents an alkyl group having 18 to 22 carbon atoms. The ester wax further includes an aliphatic alcohol having 18 to 22 carbon atoms in an amount less than 3% by mass based on a total mass of the ester wax.
    Type: Application
    Filed: March 7, 2017
    Publication date: September 14, 2017
    Inventors: Toshiyuki KABATA, Hiroyuki Shimada, Takeshi Shibuya
  • Publication number: 20150344804
    Abstract: A drive device includes a slide bearing; a shaft that passes through the slide bearing; a gear that is fixed to the shaft; and a grease composition that is held in a clearance between the slide bearing and the shaft. At least one of the slide bearing and the shaft is made of a resin. The clearance is in a range of 10 to 110 ?m. The grease composition contains a hydrocarbon base oil and lithium soap serving as a thickener. A weight ratio of the hydrocarbon base oil to the lithium soap is in a range of 94.5:5.5 to 96.0:4.0. A consistency of the grease composition is in a range of 360 to 400.
    Type: Application
    Filed: May 19, 2015
    Publication date: December 3, 2015
    Applicants: DOW CORNING TORAY CO., LTD., RICOH COMPANY, LIMITED
    Inventors: Toshiyuki KABATA, Kumiko SEO, Masahiro ISHIDA, Naoki MATSUDA, Teruyoshi TANAKA
  • Publication number: 20150344809
    Abstract: A drive device includes a plurality of gears; and a grease composition that is held on a tooth flank of at least one gear of the gears. The at least one gear is made of a resin. The grease composition contains a hydrocarbon base oil, lithium soap serving as a thickener, and olefin resin powder. A weight ratio between the hydrocarbon base oil and the lithium soap in the grease composition is in a range of 94.5:5.5 to 96.0:4.0. A consistency of the grease composition is in a range of 360 to 400.
    Type: Application
    Filed: May 20, 2015
    Publication date: December 3, 2015
    Applicants: RICOH COMPANY, LIMITED, DOW CORNING TORAY CO., LTD.
    Inventors: Toshiyuki KABATA, Kumiko SEO, Masahiro ISHIDA, Naoki MATSUDA, Teruyoshi TANAKA
  • Publication number: 20150345614
    Abstract: A drive device includes a gear having a hole; a shaft that passes through the hole; and a grease composition that is held in a clearance between the shaft and an inner peripheral surface of the hole. The gear rotates on a peripheral surface of the shaft. At least one of the gear and the shaft is made of a resin. The clearance is in a range of 10 to 110 ?m . The grease composition contains a hydrocarbon base oil and lithium soap serving as a thickener. A weight ratio of the hydrocarbon base oil to the lithium soap is in a range of 94.5:5.5 to 96.0:4.0. A consistency of the grease composition is in a range of 360 to 400.
    Type: Application
    Filed: May 22, 2015
    Publication date: December 3, 2015
    Applicants: DOW CORNING TORAY CO., LTD., RICOH COMPANY, LIMITED
    Inventors: Toshiyuki KABATA, Kumiko SEO, Masahiro ISHIDA, Naoki MATSUDA, Teruyoshi TANAKA