Patents by Inventor Hidemasa Suzuki

Hidemasa Suzuki 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: 20210341730
    Abstract: In an optical scanning apparatus, a light-emitting unit emits light waves. A light-receiving unit receives reflected light of the light waves. A transmissive member transmits the light waves and the reflected light of the light waves. A reflection mirror is arranged further toward the light-emitting unit side and light-receiving unit side than the transmissive member is, includes a reflection surface that rotates, and deflects at least either of the light waves and the reflected light using the reflection surface. The reflection mirror includes a low reflection region on the transmissive member side. The low reflection region has a reflectance of the light waves on the reflection surface that is set to be lower than a reflectance of the light waves on the other region other than the low reflection region, in a state in which the reflection surface is facing the light-emitting unit side or the light-receiving unit side.
    Type: Application
    Filed: July 13, 2021
    Publication date: November 4, 2021
    Inventors: Hidemasa Suzuki, Kunihiko Hayashi
  • Publication number: 20200348399
    Abstract: A light detection module projects a light beam to scan the light beam in a scanning direction, and receives a light beam arriving from a scanning region of the light beam. The light detection module is arranged such that a scanning center indicative of a center of the scanning of the light beam is located to be different from a window center of an optical window in the scanning direction. The optical window has a target surface that is one of the outer side surface and the inner side surface. The target surface has a cross-section along a scanning surface of the transmitted light beam. The scanning surface is defined by the scanning direction of the transmitted light beam and the transmission direction of the light beam from the light detection module. The cross-section of the target surface is shaped to be asymmetrical about the window center.
    Type: Application
    Filed: July 22, 2020
    Publication date: November 5, 2020
    Inventors: Hidemasa SUZUKI, Shunpei SUZUKI
  • Patent number: 9665052
    Abstract: A reflective optical sensor includes at least three light-emitting elements; a lighting optical system that guides light emitted from the light-emitting elements to a toner pattern; and at least three light-receiving elements that receive the beams of light reflected by the toner pattern. The lighting optical system has a lateral magnification m that satisfies m?P/S, where S is the size of the light-emitting elements and P is the arrangement pitch of the light-emitting elements.
    Type: Grant
    Filed: October 23, 2014
    Date of Patent: May 30, 2017
    Assignee: Ricoh Company, Limited
    Inventors: Koji Masuda, Hidemasa Suzuki
  • Patent number: 9459567
    Abstract: A fixing device that fixes a toner image carried on a transfer sheet onto the transfer sheet includes a fixing belt that relatively moves, with its surface being in contact with the toner image during the fixing operation, with respect to the transfer sheet, surface information detecting devices that determine surface information of the fixing belt, a surface condition changing roller that is arranged so as to be capable of coming into contact with and separating from the fixing belt and abrades the surface of the fixing belt in contact with the fixing belt, and a surface condition changing controller that controls the contact and separation of the surface condition changing roller with and from the fixing belt based on detection results obtained by the surface information detecting devices.
    Type: Grant
    Filed: September 4, 2014
    Date of Patent: October 4, 2016
    Assignee: RICOH COMPANY, LTD.
    Inventors: Susumu Momma, Koji Masuda, Hidemasa Suzuki
  • Patent number: 9442438
    Abstract: An image forming apparatus includes a charging device configured to uniformly charge a surface of a photoconductive element; an image writing device configured to write an image in the charged photoconductive element by light to form an electrostatic latent image; a developing device configured to visualize the formed electrostatic latent image as a toner image; a transfer device configured to transfer the toner image to a sheet recording medium; a fixing device configured to fix the transferred toner image onto the medium; and a surface information detecting device configured to detect surface information of a fixing member of the fixing device. The surface information detecting device radiates optical spots on a surface of the fixing member in a direction crossing a conveying direction, receives reflected light of each optical spot, and detects the surface information of the fixing device based on the detection results of the reflective lights.
    Type: Grant
    Filed: July 29, 2015
    Date of Patent: September 13, 2016
    Assignee: RICOH COMPANY, LTD.
    Inventors: Koji Masuda, Hidemasa Suzuki, Susumu Momma
  • Patent number: 9431445
    Abstract: A reflective optical sensor for detecting surface information on a moving element moving in a certain direction includes at least one light emitter, a light emitting lens provided between the light emitter and a surface of the moving element and formed to become conjugated with the light emitter in the moving direction of the moving element in a longer distance from the light emitter than in a vertical direction relative to the moving direction, at least one light receiver, and a light receiving lens provided between the light receiver and the surface of the moving element.
    Type: Grant
    Filed: July 31, 2015
    Date of Patent: August 30, 2016
    Assignee: RICOH COMPANY, LTD.
    Inventors: Susumu Momma, Kazuya Miyagaki, Koji Masuda, Hidemasa Suzuki
  • Patent number: 9329134
    Abstract: A reflection type optical sensor that detect a surface condition of a moving body and that is used for an image generation apparatus which forms images on a recording media includes a light-emitting device which has a plurality of light emitter systems including at least two light-emitting members and a light-emitting optical system having a plurality of light-emitting lenses corresponding to a plurality of the light emitter systems and guiding light emitted from the light emitter systems to the moving body and a light-receiving device which has a light receiver system including at least two light-receiving members and a light-receiving optical system having light-receiving lenses corresponding to the at least two light-receiving members and guiding light reflected by the moving body to the light receiver system. The image generation apparatus has further a surface condition judging device in addition to the reflection type optical sensor.
    Type: Grant
    Filed: March 2, 2015
    Date of Patent: May 3, 2016
    Assignee: RICOH COMPANY, LTD.
    Inventors: Hidemasa Suzuki, Koji Masuda, Susumu Momma
  • Patent number: 9316963
    Abstract: An image forming apparatus includes a fixing member, at least one reflective optical sensor, a heat shielding member, and a processor. The fixing member fixes an image on a recording medium moving in a first axis direction. At least one reflective optical sensor emits light toward the fixing member and receives light reflected by the fixing member. The heat shielding member is arranged between the fixing member and the at least one reflective optical sensor, has a light passing part through which light directed to the fixing member from the at least one reflective optical sensor and light reflected by the fixing member and directed to the at least one reflective optical sensor passes, and prevents heat transfer from the fixing member to the at least one reflective optical sensor. The processor is configured to obtain a surface state of the fixing member on the basis of an output signal from the at least one reflective optical sensor.
    Type: Grant
    Filed: August 29, 2014
    Date of Patent: April 19, 2016
    Assignee: RICOH COMPANY, LIMITED
    Inventors: Koji Masuda, Susumu Momma, Hidemasa Suzuki
  • Publication number: 20160033914
    Abstract: A reflective optical sensor for detecting surface information on a moving element moving in a certain direction includes at least one light emitter, a light emitting lens provided between the light emitter and a surface of the moving element and formed to become conjugated with the light emitter in the moving direction of the moving element in a longer distance from the light emitter than in a vertical direction relative to the moving direction, at least one light receiver, and a light receiving lens provided between the light receiver and the surface of the moving element.
    Type: Application
    Filed: July 31, 2015
    Publication date: February 4, 2016
    Inventors: Susumu MOMMA, Kazuya Miyagaki, Koji Masuda, Hidemasa Suzuki
  • Patent number: 9207590
    Abstract: A fixing apparatus for fixing a toner image borne on a sheet-like recording medium onto the sheet-like recording medium, including: a fixing member relatively moving in a first direction with respect to the sheet-like recording medium, and having a surface in contact with the toner image during a fixing operation; a surface-information-detecting device for obtaining surface information of the fixing member; a surface-condition-changing device arranged to abut on and separate from the fixing member, and abrading the surface of the fixing member in contact with the fixing member; and a surface-condition-change controller for controlling an abutting and separating of the surface-condition-changing device with respect to the fixing member according to a detection result of the surface-information-detecting device.
    Type: Grant
    Filed: January 23, 2015
    Date of Patent: December 8, 2015
    Assignee: RICOH COMPANY, LTD.
    Inventors: Susumu Momma, Koji Masuda, Hidemasa Suzuki
  • Publication number: 20150331374
    Abstract: An image forming apparatus includes a charging device configured to uniformly charge a surface of a photoconductive element; an image writing device configured to write an image in the charged photoconductive element by light to form an electrostatic latent image; a developing device configured to visualize the formed electrostatic latent image as a toner image; a transfer device configured to transfer the toner image to a sheet recording medium; a fixing device configured to fix the transferred toner image onto the medium; and a surface information detecting device configured to detect surface information of a fixing member of the fixing device. The surface information detecting device radiates optical spots on a surface of the fixing member in a direction crossing a conveying direction, receives reflected light of each optical spot, and detects the surface information of the fixing device based on the detection results of the reflective lights.
    Type: Application
    Filed: July 29, 2015
    Publication date: November 19, 2015
    Inventors: Koji MASUDA, Hidemasa SUZUKI, Susumu MOMMA
  • Patent number: 9128441
    Abstract: An image forming apparatus includes a charging device configured to uniformly charge a surface of a photoconductive element; an image writing device configured to write an image in the charged photoconductive element by light to form an electrostatic latent image; a developing device configured to visualize the formed electrostatic latent image as a toner image; a transfer device configured to transfer the toner image to a sheet recording medium; a fixing device configured to fix the transferred toner image onto the medium; and a surface information detecting device configured to detect surface information of a fixing member of the fixing device. The surface information detecting device radiates optical spots on a surface of the fixing member in a direction crossing a conveying direction, receives reflected light of each optical spot, and detects the surface information of the fixing device based on the detection results of the reflective lights.
    Type: Grant
    Filed: May 16, 2013
    Date of Patent: September 8, 2015
    Assignee: RICOH COMPANY, LIMITED
    Inventors: Koji Masuda, Hidemasa Suzuki, Susumu Momma
  • Patent number: 9116130
    Abstract: A reflection type optical sensor that detect a surface condition of a moving body and that is used for an image generation apparatus which forms images on a recording media includes a light-emitting device which has a plurality of light emitter systems including at least two light-emitting members and a light-emitting optical system having a plurality of light-emitting lenses corresponding to a plurality of the light emitter systems and guiding light emitted from the light emitter systems to the moving body and a light-receiving device which has a light receiver system including at least two light-receiving members and a light-receiving optical system having light-receiving lenses corresponding to the at least two light-receiving members and guiding light reflected by the moving body to the light receiver system. The image generation apparatus has further a surface condition judging device in addition to the reflection type optical sensor.
    Type: Grant
    Filed: September 10, 2013
    Date of Patent: August 25, 2015
    Assignee: RICOH COMPANY, LTD.
    Inventors: Hidemasa Suzuki, Koji Masuda, Susumu Momma
  • Publication number: 20150212465
    Abstract: A fixing apparatus for fixing a toner image borne on a sheet-like recording medium onto the sheet-like recording medium, comprising: a fixing member relatively moving in a first direction with respect to the sheet-like recording medium, and having a surface in contact with the toner image during a fixing operation; a surface-information-detecting device for obtaining surface information of the fixing member; a surface-condition-changing device arranged to abut on and separate from the fixing member, and abrading the surface of the fixing member in contact with the fixing member; and a surface-condition-change controller for controlling an abutting and separating of the surface-condition-changing device with respect to the fixing member according to a detection result of the surface-information-detecting device, wherein the surface-condition-change controller controls the surface-condition-changing device according to the detection result of the surface-information-detecting device with a criteria which varies
    Type: Application
    Filed: January 23, 2015
    Publication date: July 30, 2015
    Inventors: Susumu MOMMA, Koji MASUDA, Hidemasa SUZUKI
  • Publication number: 20150168310
    Abstract: A reflection type optical sensor that detect a surface condition of a moving body and that is used for an image generation apparatus which forms images on a recording media includes a light-emitting device which has a plurality of light emitter systems including at least two light-emitting members and a light-emitting optical system having a plurality of light-emitting lenses corresponding to a plurality of the light emitter systems and guiding light emitted from the light emitter systems to the moving body and a light-receiving device which has a light receiver system including at least two light-receiving members and a light-receiving optical system having light-receiving lenses corresponding to the at least two light-receiving members and guiding light reflected by the moving body to the light receiver system. The image generation apparatus has further a surface condition judging device in addition to the reflection type optical sensor.
    Type: Application
    Filed: March 2, 2015
    Publication date: June 18, 2015
    Inventors: Hidemasa SUZUKI, Koji Masuda, Susumu Momma
  • Patent number: 9052668
    Abstract: An image forming apparatus comprises: a sensor that includes a light-emitting part for emitting light to a moving body and a light-receiving part; a light-incidence adjusting mechanism that is able to alternatively select from a first state where the light-incidence adjusting mechanism causes light which have been emitted from the sensor and then reflected by the moving body to enter the sensor and a second state where the light-incidence adjusting mechanism causes a reflected light of light emitted from the sensor not to enter the sensor; and a processing unit that causes the sensor to emit light, and corrects output of the sensor when the light-incidence adjusting mechanism is in the first state on the basis of output of the sensor when the light-incidence adjusting mechanism is in the second state.
    Type: Grant
    Filed: January 27, 2014
    Date of Patent: June 9, 2015
    Assignee: RICOH COMPANY, LIMITED
    Inventors: Koji Masuda, Susumu Momma, Hidemasa Suzuki
  • Patent number: 8988675
    Abstract: A reflection type optical sensor that detect a surface condition of a moving body and that is used for an image generation apparatus which forms images on a recording media includes a light-emitting device which has a plurality of light emitter systems including at least two light-emitting members and a light-emitting optical system having a plurality of light-emitting lenses corresponding to a plurality of the light emitter systems and guiding light emitted from the light emitter systems to the moving body and a light-receiving device which has a light receiver system including at least two light-receiving members and a light-receiving optical system having light-receiving lenses corresponding to the at least two light-receiving members and guiding light reflected by the moving body to the light receiver system. The image generation apparatus has further a surface condition judging device in addition to the reflection type optical sensor.
    Type: Grant
    Filed: September 10, 2013
    Date of Patent: March 24, 2015
    Assignee: Ricoh Company, Ltd.
    Inventors: Hidemasa Suzuki, Koji Masuda, Susumu Momma
  • Publication number: 20150078767
    Abstract: A fixing device that fixes a toner image carried on a transfer sheet onto the transfer sheet includes a fixing belt that relatively moves, with its surface being in contact with the toner image during the fixing operation, with respect to the transfer sheet, surface information detecting devices that determine surface information of the fixing belt, a surface condition changing roller that is arranged so as to be capable of coming into contact with and separating from the fixing belt and abrades the surface of the fixing belt in contact with the fixing belt, and a surface condition changing controller that controls the contact and separation of the surface condition changing roller with and from the fixing belt based on detection results obtained by the surface information detecting devices.
    Type: Application
    Filed: September 4, 2014
    Publication date: March 19, 2015
    Inventors: Susumu MOMMA, Koji Masuda, Hidemasa Suzuki
  • Publication number: 20150063844
    Abstract: An image forming apparatus includes a fixing member, at least one reflective optical sensor, a heat shielding member, and a processor. The fixing member fixes an image on a recording medium moving in a first axis direction. At least one reflective optical sensor emits light toward the fixing member and receives light reflected by the fixing member. The heat shielding member is arranged between the fixing member and the at least one reflective optical sensor, has a light passing part through which light directed to the fixing member from the at least one reflective optical sensor and light reflected by the fixing member and directed to the at least one reflective optical sensor passes, and prevents heat transfer from the fixing member to the at least one reflective optical sensor. The processor is configured to obtain a surface state of the fixing member on the basis of an output signal from the at least one reflective optical sensor.
    Type: Application
    Filed: August 29, 2014
    Publication date: March 5, 2015
    Inventors: Koji MASUDA, Susumu MOMMA, Hidemasa SUZUKI
  • Publication number: 20150043936
    Abstract: A reflective optical sensor includes at least three light-emitting elements; a lighting optical system that guides light emitted from the light-emitting elements to a toner pattern; and at least three light-receiving elements that receive the beams of light reflected by the toner pattern. The lighting optical system has a lateral magnification m that satisfies m?P/S, where S is the size of the light-emitting elements and P is the arrangement pitch of the light-emitting elements.
    Type: Application
    Filed: October 23, 2014
    Publication date: February 12, 2015
    Applicant: RICOH COMPANY, LTD.
    Inventors: Koji Masuda, Hidemasa Suzuki