Patents by Inventor Hiroshi Nakahata

Hiroshi Nakahata 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: 10725289
    Abstract: A casing of an optical scanning apparatus includes: a mounting portion to which a sound-insulating member is mountable; a first and a second support portions supporting a reflective mirror in the casing on which the sound-insulating member is mounted and brought into contact with a back surface of the reflective mirror; and a third and a fourth support portions supporting a reflective mirror in the casing on which the sound-insulating member is not mounted and brought into contact with a back surface of the reflective mirror, wherein the first and the second support portions are positioned between the third and the fourth support portions in a longitudinal direction of the reflective mirror, and contact portions of the third and the fourth support portions protrude toward a reflective surface side of the reflective mirror to be arranged with respect to contact portions of the first and the second support portions.
    Type: Grant
    Filed: February 7, 2018
    Date of Patent: July 28, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hiroshi Nakahata, Yasuaki Otoguro, Takehiro Ishidate, Yuta Okada, Daisuke Aruga
  • Publication number: 20200095085
    Abstract: A stacker includes a medium stacking portion for receiving and stacking a medium processed and discharged by a processing unit, a medium butting portion for aligning the medium by contacting a leading end of the medium, and a paddle that includes a feeding portion and is for transporting the medium received by the medium stacking portion in a direction toward the medium butting portion by rotating. Furthermore, the stacker has a first mode in which the paddle stops in a state in which the feeding portion does not contact the medium on the medium stacking portion and a second mode in which the paddle stops in a state in which the feeding portion comes into contact with the medium on the medium stacking portion and is deformed.
    Type: Application
    Filed: September 23, 2019
    Publication date: March 26, 2020
    Inventors: Hiroshi SHIOBARA, Akinobu NAKAHATA, Tsuyoshi FURUMIDO, Kohei UENO
  • Patent number: 10473922
    Abstract: A casing of an optical scanning apparatus housing a rotary polygon mirror and an optical member: a mounting portion on which a sound insulation member separating the optical member from the rotary polygon mirror is mountable; a first support portion supporting a transparent member which covers an opening of the casing on which the sound insulation member is mounted; a second support portion supporting a transparent member which covers the opening of the casing on which the sound insulation member is not mounted and is thicker than the transparent member to be supported by the first support portion; and a bearing surface of the second support portion located on an inner side of the casing than a bearing surface of the first support portion so that light beam emission surfaces of the transparent members to be supported by the first and second support portions are on a substantially same plane.
    Type: Grant
    Filed: February 7, 2018
    Date of Patent: November 12, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventors: Daisuke Aruga, Hiroshi Nakahata, Yasuaki Otoguro, Takehiro Ishidate, Yuta Okada
  • Publication number: 20180231769
    Abstract: A casing of an optical scanning apparatus housing a rotary polygon mirror and an optical member: a mounting portion on which a sound insulation member separating the optical member from the rotary polygon mirror is mountable; a first support portion supporting a transparent member which covers an opening of the casing on which the sound insulation member is mounted; a second support portion supporting a transparent member which covers the opening of the casing on which the sound insulation member is not mounted and is thicker than the transparent member to be supported by the first support portion; and a bearing surface of the second support portion located on an inner side of the casing than a bearing surface of the first support portion so that light beam emission surfaces of the transparent members to be supported by the first and second support portions are on a substantially same plane.
    Type: Application
    Filed: February 7, 2018
    Publication date: August 16, 2018
    Inventors: Daisuke Aruga, Hiroshi Nakahata, Yasuaki Otoguro, Takehiro Ishidate, Yuta Okada
  • Publication number: 20180231768
    Abstract: A casing of an optical scanning apparatus includes: a mounting portion to which a sound-insulating member is mountable; a first and a second support portions supporting a reflective mirror in the casing on which the sound-insulating member is mounted and brought into contact with a back surface of the reflective mirror; and a third and a fourth support portions supporting a reflective mirror in the casing on which the sound-insulating member is not mounted and brought into contact with a back surface of the reflective mirror, wherein the first and the second support portions are positioned between the third and the fourth support portions in a longitudinal direction of the reflective mirror, and contact portions of the third and the fourth support portions protrude toward a reflective surface side of the reflective mirror to be arranged with respect to contact portions of the first and the second support portions.
    Type: Application
    Filed: February 7, 2018
    Publication date: August 16, 2018
    Inventors: Hiroshi Nakahata, Yasuaki Otoguro, Takehiro Ishidate, Yuta Okada, Daisuke Aruga
  • Publication number: 20180042785
    Abstract: An absorbent article includes a first waist region, a second waist region and a crotch region disposed between the first and second waist regions; and a chassis comprising a topsheet, a backsheet and an absorbent core disposed between the topsheet and the backsheet. The absorbent article also includes an ear disposed in one of the waist regions. The ear includes a laminate having a first nonwoven and a second nonwoven and an elastomeric material sandwiched between said first and second nonwovens in an elasticized region. The laminate also includes a first bonding region comprising a first plurality of ultrasonic bonds having a first bond density, and a second bonding region comprising a second plurality of ultrasonic bonds having a second bond density. The first bond density is greater than the second bond density.
    Type: Application
    Filed: August 11, 2017
    Publication date: February 15, 2018
    Inventors: Urmish Popatlal DALAL, Todd Douglas LENSER, Uwe SCHNEIDER, Todd Joseph STATT, Joerg MUELLER, Melanie ACEVEDO, Hiroshi NAKAHATA
  • Patent number: 9835971
    Abstract: An image forming apparatus which is configured to expose a photosensitive member to light beams emitted from a plurality of light emitting elements, generates a plurality of BD signals by a plurality of laser light beams, and controls timings at which the plurality of light emitting elements emits the light beams based on a difference between timings at which the BD signals are generated.
    Type: Grant
    Filed: April 22, 2013
    Date of Patent: December 5, 2017
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Yasutomo Furuta, Hiroshi Nakahata
  • Patent number: 9618872
    Abstract: During an operation of assembling a cover on an optical box, a cover-side engaging portion comes into contact with a side wall of the optical box and hence is deformed. An optical scanning apparatus is configured so that a distal end portion of a protrusion and an apex portion of a side wall of an optical box pass each other prior to a distal end portion of a cover-side engaging portion.
    Type: Grant
    Filed: December 22, 2014
    Date of Patent: April 11, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shinichiro Hosoi, Toshiharu Mamiya, Hiroshi Nakahata, Yasuaki Otoguro, Yuta Okada
  • Publication number: 20170064108
    Abstract: A light scanning apparatus, including: a first division unit configured to divide light emitted from a light source into a first and a second light beams; a deflection unit configured to deflect the first and second light beams to scan a first and a second scanned surfaces; a detection unit configured to detect the second light beam; a control unit configured to control, based on a detection result of the second light beam detected by the detection unit, a timing of the first light beam and a timing of the second light beam; and a second division unit configured to divide the first light beam into a third light beam and a fourth light beam and to guide the fourth light beam to the detection unit to control light intensity of the light source based on a detection result of the fourth light beam detected by the detection unit.
    Type: Application
    Filed: August 23, 2016
    Publication date: March 2, 2017
    Inventors: Toshiharu Mamiya, Hiroshi Nakahata, Shinichiro Hosoi, Yuta Okada
  • Patent number: 9482754
    Abstract: A detection unit comprising a manipulator, a imaging unit, a light beam irradiation unit and a computing unit, the imaging unit and the light beam irradiation unit are provided on a manipulator. The detection apparatus includes a horizontal imaging plane, which includes an optical axis of the imaging unit, and a vertical imaging plane, which includes the optical axis of the imaging unit and 1) a projection of a light beam from the light beam irradiation unit on the horizontal imaging plane and 2) a projection of a light beam from the light beam irradiation unit on the vertical imaging plane respectively form an intersecting angle with the optical axis of the imaging unit.
    Type: Grant
    Filed: December 15, 2014
    Date of Patent: November 1, 2016
    Assignee: KIKAI SEKKEI NAKAHATA KABUSHIKI KAISHA
    Inventors: Mitsuaki Nakahata, Hiroshi Nakahata
  • Patent number: 9389533
    Abstract: An image forming apparatus capable of controlling an image forming position with high accuracy. The image forming apparatus has a plurality of image forming sections each including a photosensitive drum and a laser scanner. The laser scanner exposes the photosensitive drum to form an electrostatic latent image thereon. The image forming section develops the electrostatic latent image formed on the photosensitive drum to form a toner image, and the toner image is transferred onto an intermediate transfer belt. A thermistor in the laser scanner detects the internal temperature of the laser scanner. The image forming apparatus controls the image forming sections to form detection patterns on the intermediate transfer belt. An image forming position is corrected based on the temperature detected by the thermistor and a result of measurement of the detection patterns.
    Type: Grant
    Filed: April 17, 2015
    Date of Patent: July 12, 2016
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Hiroshi Nakahata, Toshiharu Mamiya, Yuta Okada, Shinichiro Hosoi
  • Publication number: 20150316648
    Abstract: A detection unit comprising a manipulator, a imaging unit, a light beam irradiation unit and a computing unit, the imaging unit and the light beam irradiation unit are provided on a manipulator. The detection apparatus includes a horizontal imaging plane, which includes an optical axis of the imaging unit, and a vertical imaging plane, which includes the optical axis of the imaging unit and 1) a projection of a light beam from the light beam irradiation unit on the horizontal imaging plane and 2) a projection of a light beam from the light beam irradiation unit on the vertical imaging plane respectively form an intersecting angle with the optical axis of the imaging unit.
    Type: Application
    Filed: December 15, 2014
    Publication date: November 5, 2015
    Inventors: Mitsuaki Nakahata, Hiroshi Nakahata
  • Publication number: 20150301472
    Abstract: During an operation of assembling a cover on an optical box, a cover-side engaging portion comes into contact with a side wall of the optical box and hence is deformed. An optical scanning apparatus is configured so that a distal end portion of a protrusion and an apex portion of a side wall of an optical box pass each other prior to a distal end portion of a cover-side engaging portion.
    Type: Application
    Filed: December 22, 2014
    Publication date: October 22, 2015
    Inventors: Shinichiro Hosoi, Toshiharu Mamiya, Hiroshi Nakahata, Yasuaki Otoguro, Yuta Okada
  • Publication number: 20150301471
    Abstract: An image forming apparatus capable of controlling an image forming position with high accuracy. The image forming apparatus has a plurality of image forming sections each including a photosensitive drum and a laser scanner. The laser scanner exposes the photosensitive drum to form an electrostatic latent image thereon. The image forming section develops the electrostatic latent image formed on the photosensitive drum to form a toner image, and the toner image is transferred onto an intermediate transfer belt. A thermistor in the laser scanner detects the internal temperature of the laser scanner. The image forming apparatus controls the image forming sections to form detection patterns on the intermediate transfer belt. An image forming position is corrected based on the temperature detected by the thermistor and a result of measurement of the detection patterns.
    Type: Application
    Filed: April 17, 2015
    Publication date: October 22, 2015
    Inventors: Hiroshi Nakahata, Toshiharu Mamiya, Yuta Okada, Shinichiro Hosoi
  • Publication number: 20150130883
    Abstract: An image forming apparatus which is configured to expose a photosensitive member to light beams emitted from a plurality of light emitting elements, generates a plurality of BD signals by a plurality of laser light beams, and controls timings at which the plurality of light emitting elements emits the light beams based on a difference between timings at which the BD signals are generated.
    Type: Application
    Filed: April 22, 2013
    Publication date: May 14, 2015
    Inventors: Yasutomo Furuta, Hiroshi Nakahata
  • Patent number: 8968614
    Abstract: An extensible apertured nonwoven web, and a method for making such an apertured nonwoven web. In one embodiment the method comprises the steps of providing an apertured nonwoven web, incrementally stretching it in a direction substantially parallel to the cross machine direction, and applying tension in the machine direction such that the web width after applying tension is less than the web width after incremental stretching.
    Type: Grant
    Filed: December 29, 2005
    Date of Patent: March 3, 2015
    Assignee: The Procter & Gamble Company
    Inventors: Fred N. Desai, Hiroshi Nakahata, John J. Curro, Douglas H. Benson
  • Patent number: 8922847
    Abstract: A plurality of light beams are simultaneously scanned on a surface of a photosensitive member. The surface of the photosensitive member has a curvature factor, and therefore, the light beams have different optical path lengths. Due to differences in the optical path length, a length (scanning width) of a scanning line of one light beam is different from that of another light beam. When a temperature of an optical scanning apparatus increases, the optical path length differences vary, so that differences in magnification between the beams also vary. Therefore, by obtaining correction amounts for the scanning widths depending on the temperature, the light beams are allowed to have substantially the same scanning width even when the temperature of the optical scanning apparatus varies.
    Type: Grant
    Filed: April 12, 2013
    Date of Patent: December 30, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventor: Hiroshi Nakahata
  • Patent number: 8917305
    Abstract: A resin BD lens having a property of refracting a light beam in a direction corresponding to a main scanning direction may cause a variation in generation timing difference among a plurality of horizontal synchronization signals and accordingly degrade accuracy to correct the starting position of an electrostatic latent image. The present invention uses a glass BD lens having a property of refracting a light beam in a direction corresponding to the main scanning direction.
    Type: Grant
    Filed: April 10, 2013
    Date of Patent: December 23, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hiroshi Nakahata, Toshiharu Mamiya, Yuta Okada, Shinichiro Hosoi, Yasutomo Furuta
  • Patent number: 8810622
    Abstract: A light scanning apparatus, including: a light source configured to emit a light beam; a beam splitter configured to split the light beam into a first and a second light beams; a rotary polygon mirror configured to deflect the first light beam to scan a photosensitive member; a motor configured to rotate the rotary polygon mirror; a first lens configured to guide the first light beam to the photosensitive member; an optical sensor configured to receive the second light beam; a second lens configured to condense the second light beam on the optical sensor; and an optical box has a wall standing from a bottom surface between a region in which the rotary polygon mirror and the motor are disposed and a region in which the second lens is disposed, and a height of the wall from the bottom surface is higher than a height of the rotary polygon mirror.
    Type: Grant
    Filed: April 19, 2013
    Date of Patent: August 19, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventors: Toshiharu Mamiya, Hiroshi Nakahata, Yuta Okada, Shinichiro Hosoi
  • Patent number: 8736651
    Abstract: An optical scanning apparatus that is capable of increasing use life of a semiconductor laser by decreasing the emission time for sensors that are independently provided for synchronous control, light control, and focus control. A laser beam emitted from a light source is deflected by a deflector, and scans a photoconductor. A beam splitter arranged between the light source and the deflector separates the laser beam, which is detected by a first detection unit. A second detection unit arranged in a non-image forming area detects the deflected laser beam to detect defocus amount. A focusing unit focuses the scanning laser beam based on a detection result of the second detection unit. A control unit controls the light amount of the laser beam applied to an image forming area based on a detection result of the first detection unit at the timing when the second detection unit detects the laser beam.
    Type: Grant
    Filed: January 24, 2013
    Date of Patent: May 27, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventor: Hiroshi Nakahata