Patents by Inventor Osamu Satoh

Osamu Satoh 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: 10533130
    Abstract: Provided are a charged particle radiation measuring method and a charged particle radiation measuring device using a scintillator comprising a phosphor in which the main component is a SiAlON phosphor.
    Type: Grant
    Filed: May 17, 2019
    Date of Patent: January 14, 2020
    Assignees: Denka Company Limited, National University Corporation Gunma University, National Institutes For Quantum And Radiological Science And Technology
    Inventors: Wataru Kada, Kenta Miura, Osamu Hanaizumi, Tomihiro Kamiya, Takahiro Satoh, Junichi Susaki, Suzuya Yamada
  • Publication number: 20190367808
    Abstract: Provided are a charged particle radiation measuring method and a charged particle radiation measuring device using a scintillator comprising a phosphor in which the main component is a SiAlON phosphor.
    Type: Application
    Filed: May 17, 2019
    Publication date: December 5, 2019
    Inventors: Wataru Kada, Kenta Miura, Osamu Hanaizumi, Tomihiro Kamiya, Takahiro Satoh, Junichi Susaki, Suzuya Yamada
  • Patent number: 10294419
    Abstract: [Problem] To provide highly heat-resistant and radiation-resistant radiation measuring equipment. [Solution] Provided are a charged particle radiation measuring method and a charged particle radiation measuring device using a scintillator comprising a phosphor in which the main component is a SiAlON phosphor.
    Type: Grant
    Filed: August 25, 2016
    Date of Patent: May 21, 2019
    Assignees: Denka Company Limited, National University Corporation Gunma University, National Institutes For Quantum And Radiological Science And Technology
    Inventors: Wataru Kada, Kenta Miura, Osamu Hanaizumi, Tomihiro Kamiya, Takahiro Satoh, Junichi Susaki, Suzuya Yamada
  • Patent number: 9229409
    Abstract: A cleaning blade failure prediction processor for an image forming apparatus includes a pixel count acquisition circuit to acquire pixel count data of a cleaning target of a cleaning blade. The cleaning target is divided into a plurality of areas in a main scanning direction of the cleaning target. The pixel count acquisition circuit acquires a pixel count for each of the plurality of areas of the cleaning target. The cleaning blade failure prediction processor also includes a first cumulative pixel count calculation circuit to calculate a cumulative pixel count for each of the plurality of areas of the cleaning target, a second cumulative pixel count calculation circuit to calculate a cumulative pixel count per distance traveled of the cleaning target, and a deformation identification circuit to determine whether or not the cleaning blade shows signs of deformation according to the cumulative pixel count per distance traveled.
    Type: Grant
    Filed: March 9, 2015
    Date of Patent: January 5, 2016
    Assignee: Ricoh Company, Ltd.
    Inventors: Mikiko Imazeki, Yasushi Nakazato, Akira Takehisa, Osamu Satoh
  • Patent number: 9141063
    Abstract: An image forming apparatus includes a deterioration determining device to determine a deterioration degree of a latent image bearer based on a potential detected by a surface potential detector. The deterioration determining device calculates a relative value indicating the deterioration degree based on the aggregated number of pixels and a time value for each of virtually divided regions. The deterioration determining device determines a deterioration degree of a detecting target region of the virtually divided region based on a potential detected by the surface potential detector. The deterioration determining device further determines deterioration degrees of non-detecting target respective regions of the virtually divided regions based on the relative values of the non-detecting target respective regions, the relative value of the detecting target region, and the deterioration degree of the detecting target region.
    Type: Grant
    Filed: April 17, 2014
    Date of Patent: September 22, 2015
    Assignee: Ricoh Company, Ltd.
    Inventors: Akira Takehisa, Yasushi Nakazato, Osamu Satoh, Mikiko Imazeki
  • Publication number: 20150253714
    Abstract: A cleaning blade failure prediction processor for an image forming apparatus includes a pixel count acquisition circuit to acquire pixel count data of a cleaning target of a cleaning blade. The cleaning target is divided into a plurality of areas in a main scanning direction of the cleaning target. The pixel count acquisition circuit acquires a pixel count for each of the plurality of areas of the cleaning target. The cleaning blade failure prediction processor also includes a first cumulative pixel count calculation circuit to calculate a cumulative pixel count for each of the plurality of areas of the cleaning target, a second cumulative pixel count calculation circuit to calculate a cumulative pixel count per distance traveled of the cleaning target, and a deformation identification circuit to determine whether or not the cleaning blade shows signs of deformation according to the cumulative pixel count per distance traveled.
    Type: Application
    Filed: March 9, 2015
    Publication date: September 10, 2015
    Inventors: Mikiko Imazeki, Yasushi Nakazato, Akira Takehisa, Osamu Satoh
  • Patent number: 9091990
    Abstract: A device failure predictor includes data acquisition unit to acquire internal data of a target device, a peak value calculator to calculate a plurality of peak values of the internal data for a prescribed period of time, and a failure sign identification unit to set individual criteria for the plurality of peak values and determine whether or not the target device shows signs of failure according to the plurality of peak values and the individual criteria.
    Type: Grant
    Filed: October 30, 2014
    Date of Patent: July 28, 2015
    Assignee: Ricoh Company, Ltd.
    Inventors: Mikiko Imazeki, Yasushi Nakazato, Akira Takehisa, Osamu Satoh
  • Publication number: 20150132017
    Abstract: A device failure predictor includes data acquisition unit to acquire internal data of a target device, a peak value calculator to calculate a plurality of peak values of the internal data for a prescribed period of time, and a failure sign identification unit to set individual criteria for the plurality of peak values and determine whether or not the target device shows signs of failure according to the plurality of peak values and the individual criteria.
    Type: Application
    Filed: October 30, 2014
    Publication date: May 14, 2015
    Inventors: Mikiko IMAZEKI, Yasushi Nakazato, Akira Takehisa, Osamu Satoh
  • Patent number: 8953957
    Abstract: An image forming apparatus includes an image forming unit including a latent image carrier, a charging device, a latent image writing device, and a development device; a cumulative value calculation device that calculates, for each of regions of a surface of the image carrier, a cumulative value of the area of a latent image formed in the region; a surface potential detector that detects the surface potential of the image carrier in one of the regions as a detection region; and a determination device that determines the deterioration degree of the detection region on the basis of the detected potential, and determines the deterioration degree of a region other than the detection region on the basis of the detected potential, the cumulative value for the detection region, and the cumulative value for the region other than the detection region.
    Type: Grant
    Filed: May 28, 2013
    Date of Patent: February 10, 2015
    Assignee: Ricoh Company, Ltd.
    Inventors: Akira Takehisa, Yasushi Nakazato, Mikiko Imazeki, Osamu Satoh
  • Publication number: 20140348520
    Abstract: An area calculating unit calculates an image area of a toner image formed on a sheet recording member. A behavior detecting unit detects behavior of the recording member fed out of a conveying nip formed by a pair of conveying members. A thickness obtaining unit obtains thickness information of the recording member. An index calculating unit calculates an index value indicating windability of the recording member with respect to the conveying members based on the image area, the behavior, and the thickness information.
    Type: Application
    Filed: August 18, 2014
    Publication date: November 27, 2014
    Inventors: Osamu SATOH, Yasushi NAKAZATO, Kohji UE, Jun YAMANE
  • Publication number: 20140321865
    Abstract: An image forming apparatus includes a deterioration determining device to determine a deterioration degree of a latent image bearer based on a potential detected by a surface potential detector. The deterioration determining device calculates a relative value indicating the deterioration degree based on the aggregated number of pixels and a time value for each of virtually divided regions. The deterioration determining device determines a deterioration degree of a detecting target region of the virtually divided region based on a potential detected by the surface potential detector. The deterioration determining device further determines deterioration degrees of non-detecting target respective regions of the virtually divided regions based on the relative values of the non-detecting target respective regions, the relative value of the detecting target region, and the deterioration degree of the detecting target region.
    Type: Application
    Filed: April 17, 2014
    Publication date: October 30, 2014
    Inventors: Akira TAKEHISA, Yasushi NAKAZATO, Osamu SATOH, Mikiko IMAZEKI
  • Patent number: 8843004
    Abstract: An area calculating unit calculates an image area of a toner image formed on a sheet recording member. A behavior detecting unit detects behavior of the recording member fed out of a conveying nip formed by a pair of conveying members. A thickness obtaining unit obtains thickness information of the recording member. An index calculating unit calculates an index value indicating windability of the recording member with respect to the conveying members based on the image area, the behavior, and the thickness information.
    Type: Grant
    Filed: October 4, 2012
    Date of Patent: September 23, 2014
    Assignee: Ricoh Company, Ltd.
    Inventors: Osamu Satoh, Yasushi Nakazato, Kohji Ue, Jun Yamane
  • Patent number: 8768186
    Abstract: An apparatus, system, and method of predicting failure of a fixing device of an image forming apparatus are provided. Based on a plurality of sheet transfer time values of the fixing device, a first characteristic value that is an average value of the plurality of sheet transfer time values, and at least one of a second characteristics value that indicates the variance of the plurality of sheet transfer time values and a third characteristics value that indicates the maximum value of the plurality of sheet transfer time values are calculated. Using a determination result generated based on the first characteristics value and the at least one of the second and third characteristics values, failure of the fixing device is predicted.
    Type: Grant
    Filed: June 24, 2010
    Date of Patent: July 1, 2014
    Assignee: Ricoh Company, Limited
    Inventors: Mikiko Imazeki, Yasushi Nakazato, Osamu Satoh, Masahide Yamashita, Jun Yamane, Kohji Ue
  • Publication number: 20140016951
    Abstract: An image forming apparatus includes an image forming unit including a latent image carrier, a charging device, a latent image writing device, and a development device; a cumulative value calculation device that calculates, for each of regions of a surface of the image carrier, a cumulative value of the area of a latent image formed in the region; a surface potential detector that detects the surface potential of the image carrier in one of the regions as a detection region; and a determination device that determines the deterioration degree of the detection region on the basis of the detected potential, and determines the deterioration degree of a region other than the detection region on the basis of the detected potential, the cumulative value for the detection region, and the cumulative value for the region other than the detection region.
    Type: Application
    Filed: May 28, 2013
    Publication date: January 16, 2014
    Inventors: Akira TAKEHISA, Yasushi NAKAZATO, Mikiko IMAZEKI, Osamu SATOH
  • Patent number: 8531696
    Abstract: A management apparatus includes: a receiver that receives, via a network, status data based on control system data for stabilizing image forming from an image forming apparatus formed by image forming units; an inference unit that determines abnormality occurrence symptom, and calculates an index of the abnormality occurrence symptom, of the image forming units based on the received status data; a replacement part information acquisition unit that acquires information including a replacement date from a maintenance management system via the network when receiving a diagnosis request from a terminal of a maintenance person; a judgment table generator that calculates weight information of the symptom determination index value; a integrated diagnostic information generator for the image forming units based on the symptom determination index value and the weight information; and a integrated diagnostic information notification unit transmitting the integrated diagnostic value information to the terminal of the ma
    Type: Grant
    Filed: September 28, 2011
    Date of Patent: September 10, 2013
    Assignee: Ricoh Company, Limited
    Inventors: Masaichi Sawada, Yasushi Nakazato, Kohji Ue, Mikiko Imazeki, Osamu Satoh, Masahide Yamashita, Jun Yamane
  • Patent number: 8478561
    Abstract: A rotation measuring mechanism capable of measuring a rotation amount and a displacement amount of a rotary member in a direction perpendicular to the rotation axis is provided. An exemplary combination of the rotation measuring mechanism includes a detection target rotating in synchrony with the rotary member and range sensors. Each time the detection target rotates once, each sensor outputs one cycle of a sine wave. The amplitude of the sine wave output from the sensor varies in accordance with the displacement of the detection target together with the rotary member in the direction perpendicular to the axis, thereby obtaining the rotation amount and the displacement amount of the rotary member.
    Type: Grant
    Filed: November 1, 2010
    Date of Patent: July 2, 2013
    Assignee: Ricoh Company, Ltd.
    Inventors: Osamu Satoh, Yasushi Nakazato, Kohji Ue, Mikiko Imazeki, Masahide Yamashita, Jun Yamane
  • Patent number: 8413984
    Abstract: A sheet conveying apparatus includes a conveying path for conveying a sheet, an optical displacement sensor that detects displacement of the sheet, and a calculating unit that calculates a movement index value indicating moving distances of the sheet in a conveying direction and a direction perpendicular thereto based on an output from the optical displacement sensor. The optical displacement sensor includes a plurality of light receiving elements arranged in a matrix array. A row alignment direction and a column alignment direction of the light receiving elements are tilted with respect to the conveying direction.
    Type: Grant
    Filed: October 13, 2009
    Date of Patent: April 9, 2013
    Assignee: Ricoh Company, Limited
    Inventors: Osamu Satoh, Tsutomu Kawase
  • Patent number: 8385756
    Abstract: A first feature quantity computing unit that computes a first feature quantity representing an average of a plurality of driving loads recorded by a driving load of a fixing section recording unit of an image forming device that records the driving load acquired by a driving load acquiring unit that acquires the driving load, a second feature quantity computing unit that computes a second feature quantity representing a deviation of the plurality of the driving loads, and a diagnosis unit that performs failure diagnosis including estimation of a cause of a failure of the fixing section using the first feature quantity and the second feature quantity are used.
    Type: Grant
    Filed: August 30, 2010
    Date of Patent: February 26, 2013
    Assignee: Ricoh Company, Limited
    Inventors: Ryota Yamashina, Yasushi Nakazato, Osamu Satoh, Kohji Ue, Mikiko Imazeki, Masahide Yamashita, Jun Yamane
  • Publication number: 20130028615
    Abstract: An area calculating unit calculates an image area of a toner image formed on a sheet recording member. A behavior detecting unit detects behavior of the recording member fed out of a conveying nip formed by a pair of conveying members. A thickness obtaining unit obtains thickness information of the recording member. An index calculating unit calculates an index value indicating windability of the recording member with respect to the conveying members based on the image area, the behavior, and the thickness information.
    Type: Application
    Filed: October 4, 2012
    Publication date: January 31, 2013
    Inventors: Osamu SATOH, Yasushi Nakazato, Kohji Ue, Jun Yamane
  • Patent number: 8358941
    Abstract: A management device for an image forming apparatus including a status data collection unit where multiple types of status data are received from the image forming apparatus and stored in a status database, a target data creation unit where multiple types of target data are created based upon the multiple types of status data, a first stage determination unit where the multiple types of target data are identified as being above or below reference values set for each type, and a second stage determination unit where a weight value set for each status data type is attached to the determination results of the multiple types of status data of the first stage determination unit and as a whole of the multiple types of status data determined with majority logic for abnormal occurrence prediction.
    Type: Grant
    Filed: October 13, 2011
    Date of Patent: January 22, 2013
    Assignee: Ricoh Company, Ltd.
    Inventors: Yasushi Nakazato, Kohji Ue, Jun Yamane, Osamu Satoh, Masahide Yamashita