Patents by Inventor Hideji Mizutani

Hideji Mizutani 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: 20200041924
    Abstract: An optical scanner includes a multi beam light source, a scanning optical system, and a controller. The controller specifies selected beams, and changes light quantities of the respective selected beams at the same change timing based on the same profile data at respective positions in the main scanning direction which are fixedly determined as light quantity change positions. When the position of a center region in an arrangement width of the plurality of selected beams is moved in the main scanning direction in response to a selected mode of the beams, in the profile data, the controller derives a shift light quantity at a position shifted in the main scanning direction by an amount corresponding to the movement of the position of the center region, and the light quantity is modified so that the shift light quantity is used at the light quantity change position.
    Type: Application
    Filed: July 30, 2019
    Publication date: February 6, 2020
    Inventor: Hideji Mizutani
  • Patent number: 10146151
    Abstract: In an optical scanning device, light emitting start timings of light emitting parts with respect to a reference light emitting part are stored in a storage part. In a correction mode, a light emitting timing correction control part performs first control for allowing positions of beam spots of the light beams emitted from the light emitting parts to be equal to each other, second control for allowing a light emitting part LD4 to emit a light beam at a plurality of different start timings and patch images to be formed on a intermediate transfer belt 281, and third control for correcting light emitting start timings of light emitting parts LD2 to LD4 on the basis of the start timing of the light emitting part LD4 at which the patch images has the highest concentration.
    Type: Grant
    Filed: December 19, 2017
    Date of Patent: December 4, 2018
    Assignee: KYOCERA DOCUMENT SOLUTIONS INC.
    Inventor: Hideji Mizutani
  • Publication number: 20180181021
    Abstract: In an optical scanning device, light emitting start timings of light emitting parts with respect to a reference light emitting part are stored in a storage part. In a correction mode, a light emitting timing correction control part performs first control for allowing positions of beam spots of the light beams emitted from the light emitting parts to be equal to each other, second control for allowing a light emitting part LD4 to emit a light beam at a plurality of different start timings and patch images to be formed on a intermediate transfer belt 281, and third control for correcting light emitting start timings of light emitting parts LD2 to LD4 on the basis of the start timing of the light emitting part LD4 at which the patch images has the highest concentration.
    Type: Application
    Filed: December 19, 2017
    Publication date: June 28, 2018
    Inventor: Hideji MIZUTANI
  • Patent number: 9917971
    Abstract: A laser scanning device includes a light source, a deflection portion, an image forming lens, and a light source control portion. The light source emits a light beam. The deflection portion causes the light beam emitted from the light source to scan a scanned surface by deflecting the light beam at a predetermined deflection angle. The image forming lens condenses the deflected light beam on the scanned surface, and causes the light beam to be scanned on the scanned surface in a scanning direction at an equal speed. The light source control portion controls the light source to irradiate the light beam to at least one section area among a plurality of section areas sectioned from each other in the scanning direction on the scanned surface, at a plurality of irradiation timings determined based on a position of the at least one section area in the scanning direction.
    Type: Grant
    Filed: October 21, 2016
    Date of Patent: March 13, 2018
    Assignee: KYOCERA Document Solutions Inc.
    Inventors: Hideki Ishida, Yuji Toyota, Hideji Mizutani
  • Patent number: 9885973
    Abstract: Disclosed is an optical deflector which includes: a polygonal mirror, a drive motor, a cover member, and a temperature detection unit. The cover member includes: a first cover portion defining a first space in which the polygonal mirror is installed, wherein the first cover portion is formed with a first opening opened in opposed relation to an outer peripheral surface of the polygonal mirror; a second cover portion defining a second space which is communicated with the first space and in which the drive motor is installed, wherein the second cover portion is formed with a second opening opened in opposed relation to a motor body of the drive motor; and a third cover portion defining a third space which is communicated with the second space. The temperature detection unit is mounted to the third cover portion so as to close the third space.
    Type: Grant
    Filed: April 11, 2017
    Date of Patent: February 6, 2018
    Assignee: KYOCERA DOCUMENT SOLUTIONS INC.
    Inventors: Hideji Mizutani, Hiroatsu Tamai
  • Patent number: 9841698
    Abstract: Disclosed is an optical deflector including a polygonal mirror and a drive motor each mounted on a substrate, a cover member covering the polygonal mirror and the drive motor, and an electronic component. The cover member includes: a first cover portion defining a first space in which the polygonal mirror is installed, wherein the first cover portion is formed with a first opening opened in opposed relation to an outer peripheral surface of the polygonal mirror; and a second cover portion defining a second space which is communicated with the first space and in which the drive motor is installed, wherein the second cover portion is formed with a second opening opened in opposed relation to a motor body of the drive motor. When viewed in the first direction, the electronic component is disposed such that it falls within an open region of the second opening.
    Type: Grant
    Filed: April 11, 2017
    Date of Patent: December 12, 2017
    Assignee: KYOCERA DOCUMENT SOLUTIONS INC.
    Inventors: Hideji Mizutani, Takayuki Kurihara, Seiji Taki, Shingo Yoshida
  • Publication number: 20170299975
    Abstract: Disclosed is an optical deflector including a polygonal mirror and a drive motor each mounted on a substrate, a cover member covering the polygonal mirror and the drive motor, and an electronic component. The cover member includes: a first cover portion defining a first space in which the polygonal mirror is installed, wherein the first cover portion is formed with a first opening opened in opposed relation to an outer peripheral surface of the polygonal mirror; and a second cover portion defining a second space which is communicated with the first space and in which the drive motor is installed, wherein the second cover portion is formed with a second opening opened in opposed relation to a motor body of the drive motor. When viewed in the first direction, the electronic component is disposed such that it falls within an open region of the second opening.
    Type: Application
    Filed: April 11, 2017
    Publication date: October 19, 2017
    Inventors: Hideji Mizutani, Takayuki Kurihara, Seiji Taki, Shingo Yoshida
  • Publication number: 20170299976
    Abstract: Disclosed is an optical deflector which includes: a polygonal mirror, a drive motor, a cover member, and a temperature detection unit. The cover member includes: a first cover portion defining a first space in which the polygonal mirror is installed, wherein the first cover portion is formed with a first opening opened in opposed relation to an outer peripheral surface of the polygonal mirror; a second cover portion defining a second space which is communicated with the first space and in which the drive motor is installed, wherein the second cover portion is formed with a second opening opened in opposed relation to a motor body of the drive motor; and a third cover portion defining a third space which is communicated with the second space. The temperature detection unit is mounted to the third cover portion so as to close the third space.
    Type: Application
    Filed: April 11, 2017
    Publication date: October 19, 2017
    Inventors: Hideji Mizutani, Hiroatsu Tamai
  • Patent number: 9671717
    Abstract: An optical scanning device includes a scanning member, a plurality of light sources, a first reflection mirror, and a second reflection mirror. The scanning member scans incident laser beams in a predetermined main scanning direction. The plurality of light sources emit the laser beams from positions that are different along a sub scanning direction that is perpendicular to an optical axis direction of the laser beams and the main scanning direction. The first reflection mirror is inclined around the main scanning direction as a rotation axis, is inclined around the sub scanning direction as another rotation axis, and reflects the laser beams emitted from the light sources. The second reflection mirror is inclined around the main scanning direction as a rotation axis, is inclined around the sub scanning direction as another rotation axis, and reflects the laser beams reflected by the first reflection mirror toward the scanning member.
    Type: Grant
    Filed: March 24, 2016
    Date of Patent: June 6, 2017
    Assignee: KYOCERA Document Solutions Inc.
    Inventors: Shingo Yoshida, Hideji Mizutani, Takayuki Kurihara, Kosuke Uchida
  • Patent number: 9665035
    Abstract: This light source unit includes a light source, a collimator lens, a support body, and an adhesive agent. The collimator lens is configured to collimate laser light emitted from the light source. In the support body, a first support portion configured to support the light source and a second support portion configured to support the collimator lens are integrally molded with each other by use of a synthetic resin. The adhesive agent is attached by a larger amount between the second support portion and a second face which is on an opposite side to a first face on the light source side of the collimator lens, than between the second support portion and the first face.
    Type: Grant
    Filed: August 26, 2016
    Date of Patent: May 30, 2017
    Assignee: KYOCERA Document Solutions Inc.
    Inventor: Hideji Mizutani
  • Publication number: 20170118369
    Abstract: A laser scanning device includes a light source, a deflection portion, an image forming lens, and a light source control portion. The light source emits a light beam. The deflection portion causes the light beam emitted from the light source to scan a scanned surface by deflecting the light beam at a predetermined deflection angle. The image forming lens condenses the deflected light beam on the scanned surface, and causes the light beam to be scanned on the scanned surface in a scanning direction at an equal speed. The light source control portion controls the light source to irradiate the light beam to at least one section area among a plurality of section areas sectioned from each other in the scanning direction on the scanned surface, at a plurality of irradiation timings determined based on a position of the at least one section area in the scanning direction.
    Type: Application
    Filed: October 21, 2016
    Publication date: April 27, 2017
    Inventors: Hideki Ishida, Yuji Toyota, Hideji Mizutani
  • Patent number: 9594244
    Abstract: A light deflector includes a fixing portion and a movable portion. The movable portion includes a mirror portion for deflecting light by swinging about a predetermined swing axis, a torsion bar fixedly supported on the fixing portion and having an axis serving as the swing axis, and a supporting body configured to support the mirror portion and fixed to the torsion bar. The supporting body includes a hole portion through which the axis passes. A mass body for adjusting a resonant frequency of the movable portion is arranged in the hole portion.
    Type: Grant
    Filed: May 29, 2014
    Date of Patent: March 14, 2017
    Assignee: KYOCERA Document Solutions Inc.
    Inventor: Hideji Mizutani
  • Publication number: 20170060021
    Abstract: This light source unit includes a light source, a collimator lens, a support body, and an adhesive agent. The collimator lens is configured to collimate laser light emitted from the light source. In the support body, a first support portion configured to support the light source and a second support portion configured to support the collimator lens are integrally molded with each other by use of a synthetic resin. The adhesive agent is attached by a larger amount between the second support portion and a second face which is on an opposite side to a first face on the light source side of the collimator lens, than between the second support portion and the first face.
    Type: Application
    Filed: August 26, 2016
    Publication date: March 2, 2017
    Inventor: Hideji Mizutani
  • Patent number: 9516187
    Abstract: A laser scanning unit includes a light source, a deflector, and a scanning lens. A surface shape of the scanning lens is formed so as to have: non-uniform-speed scanning characteristics in which a scanning speed with the light beam is the lowest at the one end and the other end of the to-be-scanned surface and is highest at a midpoint between the one end and the other end; and image formation characteristics in which a beam diameter of the light beam is largest at the one end and the other end of the to-be-scanned surface and is the smallest at the midpoint between the one end and the other end. The non-uniform-speed scanning characteristics and the image formation characteristics are characteristics in which a peak value of an intensity distribution of the light beam at each image height is made equal to each other by a combination of both characteristics.
    Type: Grant
    Filed: November 25, 2015
    Date of Patent: December 6, 2016
    Assignee: KYOCERA Document Solutions Inc.
    Inventor: Hideji Mizutani
  • Publication number: 20160282750
    Abstract: n optical scanning device includes a scanning member, a plurality of light sources, a first reflection mirror, and a second reflection mirror. The scanning member scans incident laser beams in a predetermined main scanning direction. The plurality of light sources emit the laser beams from positions that are different along a sub scanning direction that is perpendicular to an optical axis direction of the laser beams and the main scanning direction. The first reflection mirror is inclined around the main scanning direction as a rotation axis, is inclined around the sub scanning direction as another rotation axis, and reflects the laser beams emitted from the light sources. The second reflection mirror is inclined around the main scanning direction as a rotation axis, is inclined around the sub scanning direction as another rotation axis, and reflects the laser beams reflected by the first reflection mirror toward the scanning member.
    Type: Application
    Filed: March 24, 2016
    Publication date: September 29, 2016
    Inventors: Shingo Yoshida, Hideji Mizutani, Takayuki Kurihara, Kosuke Uchida
  • Patent number: 9423719
    Abstract: An optical scanning device includes a light source portion, a deflector, a first focus lens, a second focus lens, a first mirror group, and a second mirror group. The first mirror group includes: a first reflection mirror on which a first light beam having transmitted through a first focus lens is incident, the first reflection mirror reflecting the first light beam in a second direction away from a first scanned surface; and a second reflection mirror that reflects the reflected first light beam toward the first scanned surface. The second mirror group includes: a third reflection mirror on which a second light beam having transmitted through a second focus lens is incident, the third reflection mirror reflecting the second light beam in the first direction of approaching the second scanned surface; and a fourth reflection mirror that reflects the reflected second light beam toward the second scanned surface.
    Type: Grant
    Filed: January 28, 2016
    Date of Patent: August 23, 2016
    Assignee: KYOCERA Document Solutions Inc.
    Inventor: Hideji Mizutani
  • Publication number: 20160223935
    Abstract: An optical scanning device includes a light source portion, a deflector, a first focus lens, a second focus lens, a first mirror group, and a second mirror group. The first mirror group includes: a first reflection mirror on which a first light beam having transmitted through a first focus lens is incident, the first reflection mirror reflecting the first light beam in a second direction away from a first scanned surface; and a second reflection mirror that reflects the reflected first light beam toward the first scanned surface. The second mirror group includes: a third reflection mirror on which a second light beam having transmitted through a second focus lens is incident, the third reflection mirror reflecting the second light beam in the first direction of approaching the second scanned surface; and a fourth reflection mirror that reflects the reflected second light beam toward the second scanned surface.
    Type: Application
    Filed: January 28, 2016
    Publication date: August 4, 2016
    Inventor: Hideji Mizutani
  • Patent number: 9377620
    Abstract: An optical scanning device includes a cylindrical aperture, a support member, and a base portion. In the aperture, an opening portion restricts a beam path width of a laser beam emitted from a light source. The support member includes a cylinder supporting portion that pivotably supports the aperture. To the base portion, the support member is fixed by adhesion fixing. The base portion includes a pass-through portion that passes through between front and rear surfaces of the base portion and allows the support member to move in direction perpendicular to a pivoting axis of the aperture. The support member has a length such that its lower end portion projects from a rear surface of the base portion in the state where the support member has been inserted in the pass-through portion to such a position where laser beam is incident in the opening portion of the aperture.
    Type: Grant
    Filed: May 28, 2015
    Date of Patent: June 28, 2016
    Assignee: KYOCERA Document Solutions Inc.
    Inventors: Shingo Yoshida, Takayuki Kurihara, Hideji Mizutani
  • Publication number: 20160156802
    Abstract: A laser scanning unit includes a light source, a deflector, and a scanning lens. A surface shape of the scanning lens is formed so as to have: non-uniform-speed scanning characteristics in which a scanning speed with the light beam is the lowest at the one end and the other end of the to-be-scanned surface and is highest at a midpoint between the one end and the other end; and image formation characteristics in which a beam diameter of the light beam is largest at the one end and the other end of the to-be-scanned surface and is the smallest at the midpoint between the one end and the other end. The non-uniform-speed scanning characteristics and the image formation characteristics are characteristics in which a peak value of an intensity distribution of the light beam at each image height is made equal to each other by a combination of both characteristics.
    Type: Application
    Filed: November 25, 2015
    Publication date: June 2, 2016
    Inventor: Hideji Mizutani
  • Patent number: 9335651
    Abstract: An optical scanning device includes a first aperture and an adjustment mechanism. The first aperture includes a first opening portion and a first cut portion. The first opening portion restricts a beam path width of a laser beam emitted from a light source. A first blocking member that blocks the laser beam is inserted in a detachable manner in the first cut portion in a direction perpendicular to a longitudinal direction of the first opening portion, at a predetermined position of the first cut portion. The adjustment mechanism is configured to adjust a fixed state of the first aperture.
    Type: Grant
    Filed: May 28, 2015
    Date of Patent: May 10, 2016
    Assignee: KYOCERA Document Solutions Inc.
    Inventors: Shingo Yoshida, Hideji Mizutani, Takayuki Kurihara