Patents by Inventor Satoru Tao

Satoru Tao 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: 20210160380
    Abstract: A device management system includes a device management apparatus; and a plurality of devices connectable to the device management apparatus. The device management apparatus includes circuitry configured to receive a notice of failure risk condition from the plurality of devices; in response to receiving a notice indicating that a first condition of the failure risk condition is satisfied from a first device, transmit to the first device a change request for changing the failure risk condition from the first condition to a second condition; identify, based on similarity between information stored for the first device and the plurality of devices other than the first device, a second device that is to be monitored using the same monitoring condition used for the first device; and transmit, to the second device, the change request for changing the failure risk condition from the first condition to the second condition.
    Type: Application
    Filed: November 2, 2020
    Publication date: May 27, 2021
    Inventor: Satoru TAO
  • Patent number: 11010111
    Abstract: An image forming apparatus includes an engine controller configured to control an operation of the image forming apparatus; an image processing controller including a constant log storage configured to temporarily store a log of the engine controller; a network controller configured to store the log, which is stored in the constant log storage, in another device via a network or in a storage of the image forming apparatus, according to a command from the engine controller; a communication line configured to communicably couple the engine controller to the image processing controller, and to communicably couple the image processing controller to the network controller; and an exclusive-use communication line configured to communicably couple the engine controller to the network controller, and to be used to report the command from the engine controller to the network controller.
    Type: Grant
    Filed: March 10, 2020
    Date of Patent: May 18, 2021
    Assignee: Ricoh Company, Ltd.
    Inventors: Satoru Tao, Satoru Komatsubara, Satoru Ohno, Hiroaki Nagata
  • Publication number: 20200293243
    Abstract: An image forming apparatus includes an engine controller configured to control an operation of the image forming apparatus; an image processing controller including a constant log storage configured to temporarily store a log of the engine controller; a network controller configured to store the log, which is stored in the constant log storage, in another device via a network or in a storage of the image forming apparatus, according to a command from the engine controller; a communication line configured to communicably couple the engine controller to the image processing controller, and to communicably couple the image processing controller to the network controller; and an exclusive-use communication line configured to communicably couple the engine controller to the network controller, and to be used to report the command from the engine controller to the network controller.
    Type: Application
    Filed: March 10, 2020
    Publication date: September 17, 2020
    Applicant: Ricoh Company, Ltd.
    Inventors: Satoru TAO, Satoru KOMATSUBARA, Satoru OHNO, Hiroaki NAGATA
  • Patent number: 9429909
    Abstract: An image forming apparatus includes a heat-generating component, a power generation device including a thermoelectric element, a heat radiation device, a cooling device, a temperature detector that detects a temperature increase of the heat-generating component, and a controller. The heat radiation device includes a first radiator plate interposed between the heat-generating component and a surface of the thermoelectric element and a second radiator plate attached to another surface of the thermoelectric element. The cooling device cools the first radiator plate. The controller controls operations of the cooling device and the power generation device by operating the cooling device if the detected temperature increase reaches at least a predetermined threshold value, and causing the power generation device to generate power without operating the cooling device to cool the first radiator plate passively if the detected temperature increase falls below the predetermined threshold value.
    Type: Grant
    Filed: December 22, 2014
    Date of Patent: August 30, 2016
    Assignee: RICOH COMPANY, LTD.
    Inventors: Takaaki Shirai, Satoru Tao, Takuma Kasai, Norikazu Okada, Homare Ehara, Keita Maejima, Tomoyuki Yamashita, Ryohta Kubokawa
  • Patent number: 9389573
    Abstract: An image forming apparatus includes a heat generator configured to generate heat in the image forming apparatus; a converter including a capacitor to convert AC power supplied from an external power supply into DC power for a load unit; a thermoelectric transducer configured to convert the generated heat into DC power for the load unit; a detector configured to detect a voltage of the AC power; and a controller configured to cause the converter to continue supplying the DC power to the load unit when a first elapsed time elapsed since the detected voltage drops below a rated voltage is shorter than a first time period shorter than an upper limit of a period of time over which the capacitor is dischargeable, and cause the thermoelectric transducer to supply the DC power to the load unit when the first elapsed time exceeds the first time period.
    Type: Grant
    Filed: June 22, 2015
    Date of Patent: July 12, 2016
    Assignee: RICOH COMPANY, LIMITED
    Inventors: Norikazu Okada, Takaaki Shirai, Takuma Kasai, Keita Maejima, Tomoyuki Yamashita, Ryohta Kubokawa, Satoru Tao, Homare Ehara
  • Publication number: 20150370216
    Abstract: An image forming apparatus includes a heat generator configured to generate heat in the image forming apparatus; a converter including a capacitor to convert AC power supplied from an external power supply into DC power for a load unit; a thermoelectric transducer configured to convert the generated heat into DC power for the load unit; a detector configured to detect a voltage of the AC power; and a controller configured to cause the converter to continue supplying the DC power to the load unit when a first elapsed time elapsed since the detected voltage drops below a rated voltage is shorter than a first time period shorter than an upper limit of a period of time over which the capacitor is dischargeable, and cause the thermoelectric transducer to supply the DC power to the load unit when the first elapsed time exceeds the first time period.
    Type: Application
    Filed: June 22, 2015
    Publication date: December 24, 2015
    Applicant: RICOH COMPANY, LIMITED
    Inventors: Norikazu OKADA, Takaaki SHIRAI, Takuma KASAI, Keita MAEJIMA, Tomoyuki YAMASHITA, Ryohta KUBOKAWA, Satoru TAO, Homare EHARA
  • Publication number: 20150177684
    Abstract: An image forming apparatus includes a heat-generating component, a power generation device including a thermoelectric element, a heat radiation device, a cooling device, a temperature detector that detects a temperature increase of the heat-generating component, and a controller. The heat radiation device includes a first radiator plate interposed between the heat-generating component and a surface of the thermoelectric element and a second radiator plate attached to another surface of the thermoelectric element. The cooling device cools the first radiator plate. The controller controls operations of the cooling device and the power generation device by operating the cooling device if the detected temperature increase reaches at least a predetermined threshold value, and causing the power generation device to generate power without operating the cooling device to cool the first radiator plate passively if the detected temperature increase falls below the predetermined threshold value.
    Type: Application
    Filed: December 22, 2014
    Publication date: June 25, 2015
    Applicant: RICOH COMPANY, LTD.
    Inventors: Takaaki SHIRAI, Satoru TAO, Takuma KASAI, Norikazu OKADA, Homare EHARA, Keita MAEJIMA, Tomoyuki YAMASHITA, Ryohta KUBOKAWA
  • Patent number: 8509639
    Abstract: According to one embodiment, transit time taken for a recording medium passing through a nip portion to transit a predetermined distance is measured. A nip width adjusting mechanism adjusts a nip width on the basis of the transit time of the recording medium over the predetermined distance.
    Type: Grant
    Filed: February 4, 2011
    Date of Patent: August 13, 2013
    Assignee: Ricoh Company, Limited
    Inventors: Satoru Tao, Noritaka Masuda
  • Patent number: 8428476
    Abstract: An image forming apparatus is disclosed that includes an image carrier, a driving source, a rotation detection unit, and a control unit that performs fluctuation pattern recognition processing, control pattern construction processing, speed fine-adjustment processing, and remaining pattern recognition processing. The control unit is configured to perform control pattern correction processing for setting a frequency band of a remaining speed fluctuation to be detected by the remaining pattern recognition processing narrower than a frequency band of a speed fluctuation to be detected by the fluctuation pattern recognition processing and correcting the speed control pattern so as to be a pattern capable of reducing even the remaining speed fluctuation based on a remaining speed fluctuation pattern recognized by the remaining pattern recognition processing.
    Type: Grant
    Filed: June 19, 2009
    Date of Patent: April 23, 2013
    Assignee: Ricoh Company, Ltd.
    Inventors: Hiromichi Matsuda, Takuro Kamiya, Michihito Ohashi, Yuichi Hirose, Noritaka Masuda, Satoru Tao, Hiroki Tsubouchi
  • Patent number: 8086156
    Abstract: An endless belt member is suspended in a tensioned manner by a plurality of roller members including a drive roller and a drive motor drives the drive roller member so as to move the belt member in a predetermined direction of travel. A detecting unit detects an amount of displacement of the belt member in a widthwise direction of the belt member, and a correction unit that corrects displacement of the belt member in the widthwise direction. The correction unit corrects the displacement of the belt member in a widthwise direction based on data sampled by the detecting unit every time a drive signal is input to the drive motor a prescribed number of times.
    Type: Grant
    Filed: August 27, 2008
    Date of Patent: December 27, 2011
    Assignee: Ricoh Company, Limited
    Inventors: Satoru Tao, Makoto Nakura
  • Patent number: 8059991
    Abstract: A control unit calculates a difference between a displacement of a belt detected by an encoder and a predetermined target value, calculates a pulse frequency of a driving pulse signal based on a feedback control based on the difference and a feed-forward control based on a reference driving pulse frequency, sets a control range of the feedback control to be equal to or smaller than a frequency of one rotation of a driven roller, and controls driving of a pulse motor such that the belt moves at a constant speed.
    Type: Grant
    Filed: May 22, 2008
    Date of Patent: November 15, 2011
    Assignee: Ricoh Company, Limited
    Inventors: Toshiyuki Andoh, Hiromichi Matsuda, Satoru Tao, Noritaka Masuda, Yuji Uozaki, Yuichi Hirose
  • Patent number: 8023872
    Abstract: In a belt device, a first detecting unit detects a widthwise displacement of a belt, and a correcting unit corrects displacement of the belt in the width direction during a period starting from turning power on and ending with completion of drive preparation of the belt based on the widthwise displacement. Moreover, a second detecting unit detects whether the belt has displaced in the width direction by an amount that is greater than a threshold, and a belt stopping unit stops running of the belt when the second detecting unit detects that the belt has displaced by an amount that is greater than the threshold.
    Type: Grant
    Filed: April 16, 2008
    Date of Patent: September 20, 2011
    Assignee: Ricoh Company, Ltd.
    Inventors: Satoru Tao, Makoto Nakura
  • Publication number: 20110222887
    Abstract: According to one embodiment, transit time taken for a recording medium passing through a nip portion to transit a predetermined distance is measured. A nip width adjusting mechanism adjusts a nip width on the basis of the transit time of the recording medium over the predetermined distance.
    Type: Application
    Filed: February 4, 2011
    Publication date: September 15, 2011
    Inventors: Satoru TAO, Noritaka MASUDA
  • Patent number: 7844207
    Abstract: A belt traveling unit includes an endless belt, a drive roller and a correction roller, a driving unit, a correction unit, a contact member, a position detector and a regulating member. The endless belt is spanned between a plurality of rollers. The driving unit rotates the drive roller to drive the belt. The correction unit adjusts a tilt angle of the correction roller to correct drifting of the belt in the width direction thereof. The contact member is rotatable in conjunction with traveling of the belt in the width direction thereof. The position detector detects a position of the contact member to detect a position of the belt in the width direction thereof. The regulating member is located at a position where the position detector does not misdetect the position of the belt when the contact member rotates.
    Type: Grant
    Filed: July 24, 2007
    Date of Patent: November 30, 2010
    Assignee: Ricoh Company, Ltd.
    Inventors: Takemasa Ryo, Satoru Tao, Shinya Tomita
  • Patent number: 7686158
    Abstract: A belt-conveyor device includes a detecting unit that detects a belt position in a width direction of the endless belt for a plurality of times within more than a cycle of the endless belt, the width direction being a direction orthogonal to direction of travel of the endless belt; an average calculating unit that calculates an average belt position from the belt positions detected by the detecting unit; a storing unit that stores therein a plural sets of correction values and belt positions; and a meander correcting unit that corrects meander of the endless belt based on a correction value that corresponds with the average belt position in the storing unit.
    Type: Grant
    Filed: December 14, 2006
    Date of Patent: March 30, 2010
    Assignee: Ricoh Company, Limited
    Inventors: Satoru Tao, Yoshihiko Sano, Susumu Saito, Shunichi Oohara, Nobuyuki Furuya
  • Publication number: 20100017019
    Abstract: A control unit calculates a difference between a displacement of a belt detected by an encoder and a predetermined target value, calculates a pulse frequency of a driving pulse signal based on a feedback control based on the difference and a feed-forward control based on a reference driving pulse frequency, sets a control range of the feedback control to be equal to or smaller than a frequency of one rotation of a driven roller, and controls driving of a pulse motor such that the belt moves at a constant speed.
    Type: Application
    Filed: May 22, 2008
    Publication date: January 21, 2010
    Inventors: Toshiyuki Andoh, Hiromichi Matsuda, Satoru Tao, Noritaka Masuda, Yuji Uozaki, Yuichi Hirose
  • Publication number: 20090324262
    Abstract: An image forming apparatus is disclosed that includes an image carrier, a driving source, a rotation detection unit, and a control unit that performs fluctuation pattern recognition processing, control pattern construction processing, speed fine-adjustment processing, and remaining pattern recognition processing. The control unit is configured to perform control pattern correction processing for setting a frequency band of a remaining speed fluctuation to be detected by the remaining pattern recognition processing narrower than a frequency band of a speed fluctuation to be detected by the fluctuation pattern recognition processing and correcting the speed control pattern so as to be a pattern capable of reducing even the remaining speed fluctuation based on a remaining speed fluctuation pattern recognized by the remaining pattern recognition processing.
    Type: Application
    Filed: June 19, 2009
    Publication date: December 31, 2009
    Inventors: Hiromichi Matsuda, Takuro Kamiya, Michihito Ohashi, Yuichi Hirose, Noritaka Masuda, Satoru Tao, Hiroki Tsubouchi
  • Publication number: 20090060576
    Abstract: An endless belt member is suspended in a tensioned manner by a plurality of roller members including a drive roller and a drive motor drives the drive roller member so as to move the belt member in a predetermined direction of travel. A detecting unit detects an amount of displacement of the belt member in a widthwise direction of the belt member, and a correction unit that corrects displacement of the belt member in the widthwise direction. The correction unit corrects the displacement of the belt member in a widthwise direction based on data sampled by the detecting unit every time a drive signal is input to the drive motor a prescribed number of times.
    Type: Application
    Filed: August 27, 2008
    Publication date: March 5, 2009
    Inventors: Satoru TAO, Makoto Nakura
  • Publication number: 20080267673
    Abstract: In a belt device, a first detecting unit detects a widthwise displacement of a belt, and a correcting unit corrects displacement of the belt in the width direction during a period starting from turning power on and ending with completion of drive preparation of the belt based on the widthwise displacement. Moreover, a second detecting unit detects whether the belt has displaced in the width direction by an amount that is greater than a threshold, and a belt stopping unit stops running of the belt when the second detecting unit detects that the belt has displaced by an amount that is greater than the threshold.
    Type: Application
    Filed: April 16, 2008
    Publication date: October 30, 2008
    Inventors: Satoru Tao, Makoto Nakura
  • Publication number: 20080056778
    Abstract: An image forming apparatus includes a belt-rotating unit, a meandering-correction unit, and an attach-detach control unit. The belt-rotating unit rotates an endless belt. The meandering-correction unit corrects meandering of the belt. The attach-detach control unit relatively moves the belt and an abutting member such that a surface of the belt abuts against or detaches from the abutting member. The surface of the belt is abutted against the abutting member before the belt attains a constant rotating speed.
    Type: Application
    Filed: August 16, 2007
    Publication date: March 6, 2008
    Inventors: Satoru Tao, Yoshihiko Sano