Patents by Inventor Hiroto Sugimoto

Hiroto Sugimoto 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: 10890869
    Abstract: An electrophotographic fixing member having an elastic layer that is high in thermal conductivity in the thickness direction, resists causing fracture or plastic deformation even by repeated compression in a high temperature state, and is low in hardness. The electrophotographic fixing member has a substrate, and an elastic layer provided on the substrate, wherein the elastic layer contains a filler containing an inorganic oxide and is provided on an outer circumference of the substrate, wherein (1) in a binarized image on a first cross-section in a thickness-circumferential direction of the elastic layer and a binarized image on a second cross-section in a thickness-axial direction of the elastic layer, 1.0?(A/B)?2.0 and 0.40?(A+B)?0.50 are satisfied; and (2) 50°??Ave?90° is satisfied.
    Type: Grant
    Filed: May 20, 2020
    Date of Patent: January 12, 2021
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Yasuhiro Miyahara, Naoki Akiyama, Hiroto Sugimoto, Hiroki Muramatsu, Akeshi Asaka, Noriaki Kobayashi, Matsutaka Maeda, Yuji Kitano
  • Patent number: 10859955
    Abstract: An image heating member for heating an image formed on a recording material includes a base material, an elastic layer which contains a thermally conductive filler of 5 ?m or more in average diameter and which is provided on the base material, and a parting layer which is provided on the elastic layer so as to contact the elastic layer and which is formed of a fluorine-containing resin tube provided on the elastic layer. The fluorine-containing resin tube has 3% or more in heat contraction rate with respect to a widthwise direction of the image heating member before and after the fluorine-containing resin tube is heated and left standing in an oven at 200° C. for 30 minutes.
    Type: Grant
    Filed: December 16, 2019
    Date of Patent: December 8, 2020
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Akeshi Asaka, Naoki Akiyama, Hiroto Sugimoto, Hiroki Muramatsu, Yasuhiro Miyahara, Noriaki Kobayashi
  • Publication number: 20200371460
    Abstract: An electrophotographic fixing member having an elastic layer that is high in thermal conductivity in the thickness direction, resists causing fracture or plastic deformation even by repeated compression in a high temperature state, and is low in hardness. The electrophotographic fixing member has a substrate, and an elastic layer provided on the substrate, wherein the elastic layer contains a filler containing an inorganic oxide and is provided on an outer circumference of the substrate, wherein (1) in a binarized image on a first cross-section in a thickness-circumferential direction of the elastic layer and a binarized image on a second cross-section in a thickness-axial direction of the elastic layer, 1.0?(A/B)?2.0 and 0.40?(A+B)?0.50 are satisfied; and (2) 50°??Ave?90° is satisfied.
    Type: Application
    Filed: May 20, 2020
    Publication date: November 26, 2020
    Inventors: Yasuhiro Miyahara, Naoki Akiyama, Hiroto Sugimoto, Hiroki Muramatsu, Akeshi Asaka, Noriaki Kobayashi, Matsutaka Maeda, Yuji Kitano
  • Publication number: 20200209793
    Abstract: An image heating member for heating an image formed on a recording material includes a base material, an elastic layer which contains a thermally conductive filler of 5 ?m or more in average diameter and which is provided on the base material, and a parting layer which is provided on the elastic layer so as to contact the elastic layer and which is formed of a fluorine-containing resin tube provided on the elastic layer. The fluorine-containing resin tube has 3% or more in heat contraction rate with respect to a widthwise direction of the image heating member before and after the fluorine-containing resin tube is heated and left standing in an oven at 200° C. for 30 minutes.
    Type: Application
    Filed: December 16, 2019
    Publication date: July 2, 2020
    Inventors: Akeshi Asaka, Naoki Akiyama, Hiroto Sugimoto, Hiroki Muramatsu, Yasuhiro Miyahara, Noriaki Kobayashi
  • Publication number: 20200019100
    Abstract: A fixing apparatus includes an endless belt, and a pressing member including a base body and an elastic layer formed on the base body. A plurality of pore portions connected to each other are provided in the elastic layer. In a case where a binary image is generated from a three-dimensional image of the elastic layer, a threshold value X ?m corresponding to opening processing with which a number of pores derived from the pore portions takes a maximum value is obtained, and then pores derived from the pore portions in the elastic layer are extracted by performing opening processing with a threshold value of 2X ?m, an average value of angles ? is 120° or larger and smaller than 150°.
    Type: Application
    Filed: June 18, 2019
    Publication date: January 16, 2020
    Inventors: Akeshi Asaka, Naoki Akiyama, Hiroto Sugimoto, Hiroki Muramatsu, Yasuhiro Miyahara, Noriaki Kobayashi
  • Publication number: 20200019093
    Abstract: An intermediary transfer belt having surface resistivity ?s of 1×109 ?/square or more and volume resistivity ?v of 1×1012 ?·cm or less includes a thermoplastic resin material containing carbon black. The carbon black contained in the thermoplastic resin material has a weight ratio of 22.5-28.5 weight % and include first carbon black and second carbon black. The first carbon black of the carbon black contained in the thermoplastic resin material has a weight ratio of 50-90 weight % and dibutyl phthalate absorption of 93-127 ml/100 g, and the second carbon black of the carbon black contained in the thermoplastic resin material has a weight ratio of 10-50 weight % and dibutyl phthalate absorption of 36-79 ml/100 g.
    Type: Application
    Filed: July 10, 2019
    Publication date: January 16, 2020
    Inventors: Ryosuke Tsuruga, Toshiyuki Yoshida, Jun Ohira, Akeshi Asaka, Hiroto Sugimoto, Takanori Ueno, Koji Sato, Midai Suzuki, Atsushi Hori, Kaoru Okamoto, Megumi Uchino, Kazuhisa Shirayama, Naoto Kameyama, Kiyonori Soutome, Shigeo Kuroda, Akira Okano, Hiroshi Tominaga
  • Patent number: 9701053
    Abstract: A manufacturing apparatus for manufacturing a fixing member includes: a metal mold capable of holding a base material of the fixing member in an inside thereof; and an injecting member including a group of openings configured to inject a liquid rubber containing a needle-like filler into the metal mold in which the base material is held. The injecting member is configured so that a ratio of a total perimeter of the group of openings to a sum of a perimeter of an inner surface of the metal mold and an outer surface of the base material is 1.3 or more and 3.3 or less.
    Type: Grant
    Filed: June 17, 2015
    Date of Patent: July 11, 2017
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Akeshi Asaka, Shuichi Tamura, Hiroto Sugimoto, Shinsuke Takahashi, Shigeaki Takada, Takeshi Suzuki, Jun Miura, Yutaka Arai
  • Patent number: 9606486
    Abstract: An elastic layer includes a needle-shaped filler and a void and has a porosity of 20 vol % or more and 60 vol % or less. The elastic layer contains a first area and a second area. The first area extends from a surface of the elastic layer opposite to a surface facing the mandrel toward the mandrel and has a thickness of 30% of the thickness of the elastic layer. The second area is a central area in a thickness direction of the elastic layer and has a thickness of 40% of the thickness of the elastic layer. The needle-shaped filler in the second area has an orientation degree of 50% or lower. The needle-shaped filler in the first area has an orientation degree higher than that of the needle-shaped filler in the second area.
    Type: Grant
    Filed: July 13, 2015
    Date of Patent: March 28, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yutaka Arai, Takeshi Suzuki, Jun Miura, Shigeaki Takada, Toshinori Nakayama, Naoki Akiyama, Daigo Matsuura, Yasuhiro Miyahara, Akeshi Asaka, Shuichi Tamura, Katsuhisa Matsunaka, Shinsuke Takahashi, Hiroto Sugimoto
  • Patent number: 9459572
    Abstract: A fixing member manufacturing method includes: a step of holding a longitudinal end of a resin tube by a first holding tool; a step of holding another longitudinal end of the resin tube by a second holding tool; a step of decreasing a distance between the first and second holding tools each holding the resin tube, by a predetermined amount; a step of expanding, after the decreasing step, the resin tube in a radial direction; and a step of externally fitting the resin tube, expanded in the radial direction, around an elastic material coated with an adhesive.
    Type: Grant
    Filed: October 25, 2013
    Date of Patent: October 4, 2016
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Naoki Akiyama, Hiroto Sugimoto, Yasuhiro Miyahara, Nobuyuki Kume, Yoshiaki Yoshida
  • Patent number: 9395666
    Abstract: Provided is a member for electrophotography. The member for electrophotography includes: a substrate; an elastic layer containing a cured silicone rubber having a methyl group bonded to a silicon atom; and a fluorine resin release layer bonded to a surface of the elastic layer by an addition-curing-type silicone rubber adhesive. The elastic layer contains a titanium oxide particle having an anatase-type crystal structure.
    Type: Grant
    Filed: January 23, 2015
    Date of Patent: July 19, 2016
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Katsuya Abe, Katsuhisa Matsunaka, Yasuhiro Miyahara, Naoki Akiyama, Hiroto Sugimoto
  • Patent number: 9367009
    Abstract: A fixing member used for fixing a toner image on a recording material includes: a base layer; and a porous elastic layer provided on the base layer and containing a needle-like filler. The elastic layer has a thermal conductivity with respect to a longitudinal direction thereof in a first region where the elastic layer is contactable to the recording material on the fixing member, and the thermal conductivity is 6 times to 900 times a thermal conductivity with respect to a thickness direction in the first region. The elastic layer has a thermal conductivity with respect to the thickness direction thereof in a second region outside the first region with respect to the longitudinal direction, and the thermal conductivity with respect to the thickness direction in the second region is larger than the thermal conductivity with respect to the thickness direction in the first region.
    Type: Grant
    Filed: June 30, 2015
    Date of Patent: June 14, 2016
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Naoki Akiyama, Shigeaki Takada, Daigo Matsuura, Yasuhiro Miyahara, Akeshi Asaka, Shuichi Tamura, Toshinori Nakayama, Yutaka Arai, Jun Miura, Takeshi Suzuki, Katsuhisa Matsunaka, Shinsuke Takahashi, Hiroto Sugimoto
  • Patent number: 9348281
    Abstract: An electrophotographic fixing member includes a substrate, a cured silicone rubber layer and a fluorine resin layer bonded onto the cured silicone rubber layer, wherein a micro hardness of a cured silicone rubber constituting the cured silicone rubber layer is designated as H?0, and a micro hardness of a rubber obtained by soaking the cured silicone rubber in a methyl hydrogen silicone oil for 24 hours and then further curing the cured silicone rubber, is designated as H?1, H?1/H?0 is 1.5 or more and 5.0 or less, and the cured silicone rubber layer comprises a titanium oxide crystal having an anatase type structure.
    Type: Grant
    Filed: December 12, 2014
    Date of Patent: May 24, 2016
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Katsuya Abe, Katsuhisa Matsunaka, Yasuhiro Miyahara, Naoki Akiyama, Hiroto Sugimoto
  • Patent number: 9348282
    Abstract: A fixing member, includes: a base layer; and a porous elastic layer provided on the base layer and configured to contain a needle-like filler. The elastic layer has a thermal conductivity, with respect to a longitudinal direction thereof, which is 6 times to 900 times a thermal conductivity with respect to a thickness direction thereof. The elastic layer has an open cell rate larger at longitudinal end portions than at a longitudinal central portion.
    Type: Grant
    Filed: June 30, 2015
    Date of Patent: May 24, 2016
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Shuichi Tamura, Akeshi Asaka, Hiroto Sugimoto, Shinsuke Takahashi, Shigeaki Takada, Yutaka Arai, Jun Miura
  • Patent number: 9315703
    Abstract: Provided is a fixing member having a silicone rubber elastic layer blended with a carbon nanotube, the fixing member suppressing peeling at an interface in association with insufficient adhesion between a base member and the silicone rubber elastic layer at the time of the use of the fixing member, and hence securing adhesion durability. The fixing member includes a base member, an elastic layer, and a surface layer, in which: the elastic layer contains a silicone rubber and a carbon nanotube; a ratio E200/E50 of an elastic modulus E200 of the elastic layer at 200° C. to an elastic modulus E50 of the elastic layer at 50° C. is 0.5 or more and less than 1.0; an adhesive strength between the elastic layer and the base member is 3.0 N/cm or more and 20.0 N/cm or less; and the elastic layer undergoes a cohesive failure at the time of a peel test.
    Type: Grant
    Filed: June 1, 2015
    Date of Patent: April 19, 2016
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Katsuhisa Matsunaka, Kazuo Kishino, Katsuya Abe, Takeshi Suzuki, Naoki Akiyama, Yasuhiro Miyahara, Hiroto Sugimoto
  • Publication number: 20160018766
    Abstract: A fixing member used for fixing a toner image on a recording material includes: a base layer; and a porous elastic layer provided on the base layer and containing a needle-like filler. The elastic layer has a thermal conductivity with respect to a longitudinal direction thereof in a first region where the elastic layer is contactable to the recording material on the fixing member, and the thermal conductivity is 6 times to 900 times a thermal conductivity with respect to a thickness direction in the first region. The elastic layer has a thermal conductivity with respect to the thickness direction thereof in a second region outside the first region with respect to the longitudinal direction, and the thermal conductivity with respect to the thickness direction in the second region is larger than the thermal conductivity with respect to the thickness direction in the first region.
    Type: Application
    Filed: June 30, 2015
    Publication date: January 21, 2016
    Inventors: Naoki Akiyama, Shigeaki Takada, Daigo Matsuura, Yasuhiro Miyahara, Akeshi Asaka, Shuichi Tamura, Toshinori Nakayama, Yutaka Arai, Jun Miura, Takeshi Suzuki, Katsuhisa Matsunaka, Shinsuke Takahashi, Hiroto Sugimoto
  • Publication number: 20160018771
    Abstract: An elastic layer includes a needle-shaped filler and a void and has a porosity of 20 vol % or more and 60 vol % or less. The elastic layer contains a first area and a second area. The first area extends from a surface of the elastic layer opposite to a surface facing the mandrel toward the mandrel and has a thickness of 30% of the thickness of the elastic layer. The second area is a central area in a thickness direction of the elastic layer and has a thickness of 40% of the thickness of the elastic layer. The needle-shaped filler in the second area has an orientation degree of 50% or lower. The needle-shaped filler in the first area has an orientation degree higher than that of the needle-shaped filler in the second area.
    Type: Application
    Filed: July 13, 2015
    Publication date: January 21, 2016
    Inventors: Yutaka Arai, Takeshi Suzuki, Jun Miura, Shigeaki Takada, Toshinori Nakayama, Naoki Akiyama, Daigo Matsuura, Yasuhiro Miyahara, Akeshi Asaka, Shuichi Tamura, Katsuhisa Matsunaka, Shinsuke Takahashi, Hiroto Sugimoto
  • Publication number: 20160018765
    Abstract: A fixing member, includes: a base layer; and a porous elastic layer provided on the base layer and configured to contain a needle-like filler. The elastic layer has a thermal conductivity, with respect to a longitudinal direction thereof, which is 6 times to 900 times a thermal conductivity with respect to a thickness direction thereof. The elastic layer has an open cell rate larger at longitudinal end portions than at a longitudinal central portion.
    Type: Application
    Filed: June 30, 2015
    Publication date: January 21, 2016
    Inventors: Shuichi Tamura, Akeshi Asaka, Hiroto Sugimoto, Shinsuke Takahashi, Shigeaki Takada, Yutaka Arai, Jun Miura
  • Patent number: 9235174
    Abstract: A fixing member manufacturing method includes: a first step of externally fitting a resin tube around an elastic material; and a second step of squeezing an excessive adhesive between the elastic material and the resin tube. The second step includes: a step of externally fitting, around the resin tube in a longitudinal end side, a ring member having an inner diameter larger than an outer diameter of the resin tube externally fitted around the elastic material; and a step of moving the ring member from the longitudinal end side toward another longitudinal end side of the resin tube while bringing the ring member into contact with an outer peripheral surface of the resin tube by air pressure.
    Type: Grant
    Filed: October 25, 2013
    Date of Patent: January 12, 2016
    Assignee: Canon Kabushiki Kaisha
    Inventors: Naoki Akiyama, Hiroto Sugimoto, Yasuhiro Miyahara, Kazuo Kishino, Yoshiaki Yoshida
  • Publication number: 20150367544
    Abstract: A manufacturing apparatus for manufacturing a fixing member includes: a metal mold capable of holding a base material of the fixing member in an inside thereof; and an injecting member including a group of openings configured to inject a liquid rubber containing a needle-like filler into the metal mold in which the base material is held. The injecting member is configured so that a ratio of a total perimeter of the group of openings to a sum of a perimeter of an inner surface of the metal mold and an outer surface of the base material is 1.3 or more and 3.3 or less.
    Type: Application
    Filed: June 17, 2015
    Publication date: December 24, 2015
    Inventors: Akeshi Asaka, Shuichi Tamura, Hiroto Sugimoto, Shinsuke Takahashi, Shigeaki Takada, Takeshi Suzuki, Jun Miura, Yutaka Arai
  • Publication number: 20150355581
    Abstract: Provided is a fixing member having a silicone rubber elastic layer blended with a carbon nanotube, the fixing member suppressing peeling at an interface in association with insufficient adhesion between a base member and the silicone rubber elastic layer at the time of the use of the fixing member, and hence securing adhesion durability. The fixing member includes a base member, an elastic layer, and a surface layer, in which: the elastic layer contains a silicone rubber and a carbon nanotube; a ratio E200/E50 of an elastic modulus E200 of the elastic layer at 200° C. to an elastic modulus E50 of the elastic layer at 50° C. is 0.5 or more and less than 1.0; an adhesive strength between the elastic layer and the base member is 3.0 N/cm or more and 20.0 N/cm or less; and the elastic layer undergoes a cohesive failure at the time of a peel test.
    Type: Application
    Filed: June 1, 2015
    Publication date: December 10, 2015
    Inventors: Katsuhisa Matsunaka, Kazuo Kishino, Katsuya Abe, Takeshi Suzuki, Naoki Akiyama, Yasuhiro Miyahara, Hiroto Sugimoto