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).

  • 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
  • Patent number: 9176442
    Abstract: An image heating apparatus includes an endless belt configured to heat an image on a sheet at a nip potion, a heat generation device configured to cause the belt to generate heat, a nip forming member configured to form the nip portion between the nip forming member and the belt, and a pressing roller configured to press an inner surface of the belt toward the nip forming member, the pressing roller including an elastic porous layer containing a plurality of filler particles, wherein a thermal conductivity of the elastic porous layer in an axial direction of the pressing roller is in a range of 6 times to 900 times a thermal conductivity of the elastic porous layer in a radial direction of the pressing roller.
    Type: Grant
    Filed: November 25, 2014
    Date of Patent: November 3, 2015
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Toshinori Nakayama, Hiroto Sugimoto, Masayuki Tamaki, Koichi Kakubari, Katsuhisa Matsunaka, Yutaka Arai, Jun Miura, Takeshi Suzuki, Naoki Akiyama, Shigeaki Takada, Yasuhiro Miyahara
  • Publication number: 20150309451
    Abstract: A fixing member manufacturing method includes: a step of coating an outer peripheral surface of an elastic material with an adhesive; a step of externally fitting a resin tube around the elastic material coated with the adhesive; a step of temporarily fixing the resin tube onto the elastic material by heating the resin tube at a longitudinal end portion; a step of temporarily fixing the resin tube onto the elastic material by heating the resin tube at the other longitudinal end portion except for a circumferential part of the resin tube; a step of squeezing out an excessive adhesive from between the elastic material and the resin tube, in a direction from the longitudinal end portion to the other longitudinal end portion of the resin tube; and a step of fixing the resin tube onto the elastic material by heating the adhesive.
    Type: Application
    Filed: July 1, 2015
    Publication date: October 29, 2015
    Inventors: Naoki Akiyama, Hiroto Sugimoto, Yasuhiro Miyahara, Yoshiaki Yoshida, Jun Miura
  • Patent number: 9110411
    Abstract: A fixing member manufacturing method includes: a step of coating an outer peripheral surface of an elastic material with an adhesive; a step of externally fitting a resin tube around the elastic material coated with the adhesive; a step of temporarily fixing the resin tube onto the elastic material by heating the resin tube at a longitudinal end portion; a step of temporarily fixing the resin tube onto the elastic material by heating the resin tube at the other longitudinal end portion except for a circumferential part of the resin tube; a step of squeezing out an excessive adhesive from between the elastic material and the resin tube, in a direction from the longitudinal end portion to the other longitudinal end portion of the resin tube; and a step of fixing the resin tube onto the elastic material by heating the adhesive.
    Type: Grant
    Filed: October 23, 2013
    Date of Patent: August 18, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventors: Naoki Akiyama, Hiroto Sugimoto, Yasuhiro Miyahara, Yoshiaki Yoshida, Jun Miura
  • Publication number: 20150212461
    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: Application
    Filed: January 23, 2015
    Publication date: July 30, 2015
    Inventors: Katsuya Abe, Katsuhisa Matsunaka, Yasuhiro Miyahara, Naoki Akiyama, Hiroto Sugimoto
  • Patent number: 9086664
    Abstract: Provided is a fixing device, the heat generation amount of which can be obtained with a smaller amount of a microwave absorbing material. As a result, the start-up (warm-up) time for achieving a fixing temperature can be shortened without impairing characteristics such as flexibility, releasing property, and durability. The fixing device includes a heating member; a pressurizing member; and a microwave generating unit. It is configured to fix an unfixed toner on a recording material by passing the recording material through a nip formed between the heating member and the pressurizing member. The heating member includes a heat generating layer for generating heat with microwaves generated by the microwave generating unit. The heat generating layer contains a high molecular compound and a carbon fiber having an average fiber diameter of 80-150 nm, an average fiber length of 6-10 ?m, and an absorption peak in a Raman spectrum resulting from a graphite structure.
    Type: Grant
    Filed: May 16, 2014
    Date of Patent: July 21, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventors: Katsuhisa Matsunaka, Yutaka Arai, Jun Miura, Jiro Ishizuka, Shuichi Tamura, Ryo Yashiro, Hiroto Sugimoto, Naoki Akiyama, Kenji Hashimoto, Yasuhiro Miyahara, Hiroki Muramatsu, Koji Sato
  • Publication number: 20150147101
    Abstract: An image heating apparatus includes an endless belt configured to heat an image on a sheet at a nip potion, a heat generation device configured to cause the belt to generate heat, a nip forming member configured to form the nip portion between the nip forming member and the belt, and a pressing roller configured to press an inner surface of the belt toward the nip forming member, the pressing roller including an elastic porous layer containing a plurality of filler particles, wherein a thermal conductivity of the elastic porous layer in an axial direction of the pressing roller is in a range of 6 times to 900 times a thermal conductivity of the elastic porous layer in a radial direction of the pressing roller.
    Type: Application
    Filed: November 25, 2014
    Publication date: May 28, 2015
    Inventors: Toshinori Nakayama, Hiroto Sugimoto, Masayuki Tamaki, Koichi Kakubari, Katsuhisa Matsunaka, Yutaka Arai, Jun Miura, Takeshi Suzuki, Naoki Akiyama, Shigeaki Takada, Yasuhiro Miyahara
  • Patent number: 9034474
    Abstract: A fixing belt includes a cylindrical base composed of a metal and a polyimide resin layer formed on the inner peripheral surface of the cylindrical base, in which the polyimide resin layer has an imidization rate of 70% to 93%, and comprises a polyimide resin containing a specific constitutional unit.
    Type: Grant
    Filed: July 26, 2010
    Date of Patent: May 19, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kazuo Kishino, Katsuhisa Matsunaka, Hiroto Sugimoto, Hidekazu Maruta, Nobuyuki Kume, Keigo Kaji, Ko Nakano
  • Publication number: 20150098739
    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: Application
    Filed: December 12, 2014
    Publication date: April 9, 2015
    Inventors: Katsuya Abe, Katsuhisa Matsunaka, Yasuhiro Miyahara, Naoki Akiyama, Hiroto Sugimoto
  • Patent number: 8909119
    Abstract: A fixing member includes an elastic layer and a toner parting layer. The elastic layer includes a laser-irradiated region formed by being irradiated at longitudinal end portions of the elastic layer with laser light except for at least one non-laser-irradiated region with respect to a circumferential direction of the elastic layer. The elastic layer is coated with the toner parting layer.
    Type: Grant
    Filed: October 28, 2013
    Date of Patent: December 9, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yasuhiro Miyahara, Naoki Akiyama, Hiroto Sugimoto, Takeshi Suzuki, Yuji Hasegawa
  • Publication number: 20140248071
    Abstract: Provided is a fixing device whose required heat generation amount can be obtained with a smaller amount of a microwave absorbing material, hence start-up (warm-up) time for achieving fixable temperature of the fixing device can be shortened without impairing characteristics such as flexibility, releasing property, durability. The fixing device comprises: a heating member; a pressurizing member; and a microwave generating unit, the fixing device being configured to fix an unfixed toner on a recording material by passing the recording material through a nip formed between the heating member and the pressurizing member, wherein: the heating member includes a heat generating layer for generating heat with microwave generated by the microwave generating unit; and the heat generating layer contains a high molecular compound and a carbon fiber having an average fiber diameter of 80-150 nm, an average fiber length of 6-10 ?m, and in Raman spectrum, an absorption peak resulting from graphite structure.
    Type: Application
    Filed: May 16, 2014
    Publication date: September 4, 2014
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Katsuhisa Matsunaka, Yutaka Arai, Jun Miura, Jiro Ishizuka, Shuichi Tamura, Ryo Yashiro, Hiroto Sugimoto, Naoki Akiyama, Kenji Hashimoto, Yasuhiro Miyahara, Hiroki Muramatsu, Koji Sato
  • Patent number: 8755726
    Abstract: A fixing belt includes: a base layer formed of a nickel alloy; and a surface layer provided on said base layer, said surface layer having a thickness and being formed of a first polyimide resin material. The surface layer includes a filler dispersed therein and having an average particle size not less than the thickness. The filler is formed of a second polyimide resin material.
    Type: Grant
    Filed: January 25, 2013
    Date of Patent: June 17, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventor: Hiroto Sugimoto
  • Publication number: 20140116611
    Abstract: A fixing member manufacturing method includes: a step of coating an outer peripheral surface of an elastic material with an adhesive; a step of externally fitting a resin tube around the elastic material coated with the adhesive; a step of temporarily fixing the resin tube onto the elastic material by heating the resin tube at a longitudinal end portion; a step of temporarily fixing the resin tube onto the elastic material by heating the resin tube at the other longitudinal end portion except for a circumferential part of the resin tube; a step of squeezing out an excessive adhesive from between the elastic material and the resin tube, in a direction from the longitudinal end portion to the other longitudinal end portion of the resin tube; and a step of fixing the resin tube onto the elastic material by heating the adhesive.
    Type: Application
    Filed: October 23, 2013
    Publication date: May 1, 2014
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Naoki Akiyama, Hiroto Sugimoto, Yasuhiro Miyahara, Yoshiaki Yoshida, Jun Miura
  • Publication number: 20140116603
    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: Application
    Filed: October 25, 2013
    Publication date: May 1, 2014
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Naoki Akiyama, Hiroto Sugimoto, Yasuhiro Miyahara, Nobuyuki Kume, Yoshiaki Yoshida
  • Publication number: 20140116599
    Abstract: A fixing member manufacturing method includes: a step of forming a laser-irradiated region by irradiating a surface of an elastic material with laser light of 120 nm or more and 10600 nm or less in oscillation wavelength; a step of applying an adhesive onto the elastic material on which the laser-irradiated region is formed; a step of coating the elastic material, after the applying step, with a resin tube and then elongating the resin tube on the elastic material in a longitudinal direction; a step of locally fixing the elastic material and the resin tube while maintaining the elongation of the resin tube in the longitudinal direction by heating the laser-irradiated region from above the resin tube; and a step of fixing a whole of the resin tube to the elastic material by curing the adhesive.
    Type: Application
    Filed: October 28, 2013
    Publication date: May 1, 2014
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Yasuhiro Miyahara, Naoki Akiyama, Hiroto Sugimoto, Takeshi Suzuki, Yoshiaki Yoshida
  • Publication number: 20140116612
    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: Application
    Filed: October 25, 2013
    Publication date: May 1, 2014
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Naoki Akiyama, Hiroto Sugimoto, Yasuhiro Miyahara, Kazuo Kishino, Yoshiaki Yoshida
  • Publication number: 20140119789
    Abstract: A fixing member includes an elastic layer and a toner parting layer. The elastic layer includes a laser-irradiated region formed by being irradiated at longitudinal end portions of the elastic layer with laser light except for at least one non-laser-irradiated region with respect to a circumferential direction of the elastic layer. The elastic layer is coated with the toner parting layer.
    Type: Application
    Filed: October 28, 2013
    Publication date: May 1, 2014
    Applicant: KANON KABUSHIKI KAISHA
    Inventors: Yasuhiro Miyahara, Naoki Akiyama, Hiroto Sugimoto, Takeshi Suzuki, Yuji Hasegawa
  • Publication number: 20110045310
    Abstract: A fixing belt includes a cylindrical base composed of a metal and a polyimide resin layer formed on the inner peripheral surface of the cylindrical base, in which the polyimide resin layer has an imidization rate of 70% to 93%, and comprises a polyimide resin containing a specific constitutional unit.
    Type: Application
    Filed: July 26, 2010
    Publication date: February 24, 2011
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Kazuo Kishino, Katsuhisa Matsunaka, Hiroto Sugimoto, Hidekazu Maruta, Nobuyuki Kume, Keigo Kaji, Ko Nakano