Patents by Inventor Hidenori Mine

Hidenori Mine 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: 20200317461
    Abstract: A post-processing apparatus includes: a cutter that cuts a transported sheet; a waste bin that stores a cutting waste generated by a cutting operation of the cutter and falling from the cutter; a sensor that detects the cutting waste at a predetermined position in a depth direction in the waste bin; and a hardware processor that controls the cutting operation of the cutter according to a cutting mode, sets a predetermined value according to the cutting mode when the sensor detects the cutting waste, counts the number of times of cutting by the cutter after the sensor starts to detect the cutting waste, and detects that the waste bin is full when the counted number of times of cutting reaches the predetermined value.
    Type: Application
    Filed: April 6, 2020
    Publication date: October 8, 2020
    Inventors: Teruhiko TOYOIZUMI, Masayuki WATANABE, Hidenori MINE
  • Publication number: 20200052615
    Abstract: A motor drive apparatus drives and controls a plurality of motors that rotate a common drive shaft. The motor drive apparatus includes a motor drive hardware processor that outputs equal drive power to each of the plurality of motors, and manipulates the drive power with a rotational speed detection signal of any one of the plurality of motors as a feedback signal. The feedback signal is switched based on conditions such as responsiveness and efficiency.
    Type: Application
    Filed: July 9, 2019
    Publication date: February 13, 2020
    Inventors: Takumi Shirakuma, Hirokatsu Kodama, Hidenori Mine, Keigo Ogura, Kenji Izumiya
  • Publication number: 20200019108
    Abstract: An image forming device includes a resist roller feeding a sheet of paper toward an image forming unit; a first detector arranged upstream of the resist roller in a feeding direction to detect a front edge of the sheet of paper; a first calculator computing a first misalignment amount of the sheet of paper based on detection results by the first detector; a corrector correcting misalignment of the sheet of paper based on the computed first misalignment amount; a second detector arranged downstream of the resist roller in the feeding direction to detect a position of an end of the sheet of paper in a widthwise direction; a second calculator computing a second misalignment amount of the sheet of paper based on detection results by the second detector; and an adjuster adjusting a correction amount by the corrector based on the computed second misalignment amount.
    Type: Application
    Filed: July 2, 2019
    Publication date: January 16, 2020
    Applicant: KONICA MINOLTA, INC.
    Inventors: Hidenori MINE, Kenji IZUMIYA, Keigo OGURA, Takumi SHIRAKUMA, Hirokatsu KODAMA
  • Publication number: 20190393810
    Abstract: A driving device includes: a first motor that transmits power to a rotation shaft of a conveyance roller for conveying a paper sheet; a second motor that transmits power to the rotation shaft of the conveyance roller; and a motor controller that controls rotational speeds of the first and second motors by changing a control value, wherein the motor controller controls the control value of the first motor at multiple steps at a time of acceleration or deceleration and changes the control value of the second motor according to a change range of the control value of the first motor in synchronization with a timing when the control value of the first motor is changed.
    Type: Application
    Filed: June 19, 2019
    Publication date: December 26, 2019
    Applicant: KONICA MINOLTA, INC.
    Inventors: Keigo OGURA, Takumi SHIRAKUMA, Kenji IZUMIYA, Hidenori MINE, Hirokatsu KODAMA
  • Patent number: 10509349
    Abstract: A fixing device includes a first fixing section, a second fixing section, the first fixing section and the second fixing section forming a fixing nip therebetween, a nip width adjusting section capable of adjusting a nip width of the fixing nip, a rotation speed detecting section that detects a rotation speed of the second fixing section, and a hardware processor that controls the nip width adjusting section to make the nip width equal to a predetermined reference nip width.
    Type: Grant
    Filed: November 7, 2018
    Date of Patent: December 17, 2019
    Assignee: KONICA MINOLTA, INC.
    Inventors: Kenji Izumiya, Takumi Shirakuma, Keigo Ogura, Hidenori Mine, Hirokatsu Kodama
  • Publication number: 20190146397
    Abstract: A fixing device includes a first fixing section, a second fixing section, the first fixing section and the second fixing section forming a fixing nip therebetween, a nip width adjusting section capable of adjusting a nip width of the fixing nip, a rotation speed detecting section that detects a rotation speed of the second fixing section, and a hardware processor that controls the nip width adjusting section to make the nip width equal to a predetermined reference nip width.
    Type: Application
    Filed: November 7, 2018
    Publication date: May 16, 2019
    Applicant: Konica Minolta, Inc.
    Inventors: Kenji IZUMIYA, Takumi SHIRAKUMA, Keigo OGURA, Hidenori MINE, Hirokatsu KODAMA
  • Patent number: 10054894
    Abstract: An image forming apparatus that controls to cut off exciting currents supplied to a plurality of motors to drive conveyance roller pairs after a leading end of a paper sheet is brought in contact with a registration roller pair, and, when cutting off the exciting currents, cut off the exciting current for at least one of the motors at a different timing from the other motors.
    Type: Grant
    Filed: September 28, 2017
    Date of Patent: August 21, 2018
    Assignee: KONICA MINOLTA, INC.
    Inventors: Hidenori Mine, Kenji Izumiya, Satoshi Ogata, Kenji Tamaki, Hirokatsu Kodama
  • Patent number: 10025235
    Abstract: An image forming apparatus includes: an image holder that holds a toner image; a transferer that is disposed opposite to the image holder so as to be in contact with the image holder and transfers the toner image from the image holder onto a recording sheet that is going through a contact part where the transferer contacts the image holder, by applying a transfer voltage between the transferer and the image holder; a first power source that applies a voltage of a first polarity to the image holder; and a second power source that applies a voltage of a second polarity, which is reverse to the first polarity, to the transferer.
    Type: Grant
    Filed: August 15, 2017
    Date of Patent: July 17, 2018
    Assignee: KONICA MINOLTA, INC.
    Inventors: Kenji Tamaki, Kenji Izumiya, Satoshi Ogata, Hidenori Mine, Hirokatsu Kodama
  • Publication number: 20180113410
    Abstract: An image forming apparatus that controls to cut off exciting currents supplied to a plurality of motors to drive conveyance roller pairs after a leading end of a paper sheet is brought in contact with a registration roller pair, and, when cutting off the exciting currents, cut off the exciting current for at least one of the motors at a different timing from the other motors.
    Type: Application
    Filed: September 28, 2017
    Publication date: April 26, 2018
    Inventors: Hidenori MINE, Kenji IZUMIYA, Satoshi OGATA, Kenji TAMAKI, Hirokatsu KODAMA
  • Patent number: 9921524
    Abstract: An image formation apparatus comprising: a belt member suspended by a plurality of supporting rotating bodies and thus rotating; a cleaning member removing toner adhering to the belt member; a tray receiving waste toner removed from the belt member by the cleaning member; a vibration mechanism vibrating the tray to move the waste toner toward a lower side of the tray; a steering control mechanism to perform movement control to move the belt member in an axial direction of the supporting rotating bodies while the belt member rotates; and a vibration adjustment mechanism to change a manner of vibration of the vibration mechanism, based on the movement control by the steering control mechanism.
    Type: Grant
    Filed: December 6, 2016
    Date of Patent: March 20, 2018
    Assignee: KONICA MINOLTA, INC.
    Inventors: Satoru Sasaki, Yumiko Izumiya, Hidenori Mine, Takumi Shirakuma, Kosuke Sasaki
  • Publication number: 20180059584
    Abstract: An image forming apparatus includes: an image holder that holds a toner image; a transferer that is disposed opposite to the image holder so as to be in contact with the image holder and transfers the toner image from the image holder onto a recording sheet that is going through a contact part where the transferer contacts the image holder, by applying a transfer voltage between the transferer and the image holder; a first power source that applies a voltage of a first polarity to the image holder; and a second power source that applies a voltage of a second polarity, which is reverse to the first polarity, to the transferer.
    Type: Application
    Filed: August 15, 2017
    Publication date: March 1, 2018
    Inventors: Kenji TAMAKI, Kenji IZUMIYA, Satoshi OGATA, Hidenori MINE, Hirokatsu KODAMA
  • Publication number: 20170168427
    Abstract: An image formation apparatus comprising: a belt member suspended by a plurality of supporting rotating bodies and thus rotating; a cleaning member removing toner adhering to the belt member; a tray receiving waste toner removed from the belt member by the cleaning member; a vibration mechanism vibrating the tray to move the waste toner toward a lower side of the tray; a steering control mechanism to perform movement control to move the belt member in an axial direction of the supporting rotating bodies while the belt member rotates; and a vibration adjustment mechanism to change a manner of vibration of the vibration mechanism, based on the movement control by the steering control mechanism.
    Type: Application
    Filed: December 6, 2016
    Publication date: June 15, 2017
    Inventors: Satoru SASAKI, Yumiko IZUMIYA, Hidenori MINE, Takumi SHIRAKUMA, Kosuke SASAKI
  • Patent number: 9445458
    Abstract: An induction heating device includes: a resonant circuit provided with a coil heating a workpiece inductively and a capacitor, the coil and the capacitor being coupled in parallel with each other; a switching element coupled in series with the resonant circuit; a power supply which applies to the resonant circuit, a direct-current input voltage whose instantaneous value can be changed with the lapse of time; and a power controller which controls power to the workpiece by turning the switching element ON at a certain time and changing an ON period of the switching element, and the power controller is characterized by turning the switching element ON with a delay of an integral multiple of a resonant period of the resonant circuit if a value of power to the workpiece is equal to or lower than a first threshold which is predetermined.
    Type: Grant
    Filed: March 23, 2012
    Date of Patent: September 13, 2016
    Assignee: KONICA MINOLTA BUSINESS TECHNOLOGIES, INC.
    Inventors: Seiichi Kirikubo, Atsushi Yamaguchi, Yutaka Yamamoto, Takahiro Tsujimoto, Hiroyuki Watanabe, Hidenori Mine, Masato Ishii
  • Patent number: 9354563
    Abstract: An electromagnetic induction heating apparatus comprises: a resonance circuit that includes a inductor and a capacitor; a direct-current electric power supply; and a switching element performing ON and OFF switching of electric power supplied to the resonance circuit by the direct-current electric power supply; performs intermittent control of the electric power supply by controlling the ON and OFF switching at regular intervals, and by performing control to stop the electric power supply when not controlling the ON and OFF switching, wherein during the intermittent control, the switching control unit performs gradual control such that, upon beginning the control of the ON and OFF switching, the electric power supply gradually increases to reach a target value, and upon stopping the control of the ON and OFF switching, the electric power supply gradually decreases from the target value until stopping, such that the gradual decrease involves fewer steps than the gradual increase.
    Type: Grant
    Filed: August 30, 2013
    Date of Patent: May 31, 2016
    Assignee: KONICA MINOLTA, INC.
    Inventors: Seiichi Kirikubo, Masaaki Goto, Yutaka Yamamoto, Takahiro Tsujimoto, Hiroyuki Watanabe, Hidenori Mine, Masato Ishii
  • Patent number: 9354566
    Abstract: An image forming apparatus having: a power source applying alternating current voltage to the magnetizing coil; a demagnetizing coil switchable between a conductive state and a cutoff state, and when in the conductive state, cancelling out a portion of a magnetic flux produced by the magnetizing coil; a contact switch and a semiconductor switch electrically connected in parallel, and, in combination, bringing the demagnetizing coil into the conductive state or the cutoff state; and a control unit opening or closing the switches separately. The control unit: opens or closes the semiconductor switch in synchronization with a zero-crossing of the alternating current voltage at least when the contact switch is open; opens or closes the contact switch only when the semiconductor switch is closed; and opens the semiconductor switch when the demagnetizing coil brought into the conductive state by the contact switch needs to be maintained in the conductive state.
    Type: Grant
    Filed: February 12, 2014
    Date of Patent: May 31, 2016
    Assignee: KONICA MINOLTA, INC.
    Inventors: Seiichi Kirikubo, Masahiro Kamiya, Takahiro Tsujimoto, Yutaka Yamamoto, Hidenori Mine, Nobuhiro Matsuo
  • Patent number: 9052660
    Abstract: An image forming apparatus includes a timing roller for conveying paper in the image forming apparatus, a first motor receiving supply of electric power from a power source for driving the timing roller, a second motor receiving supply of electric power from the power source, a sensor for detecting whether a jam occurs at the conveyance roller, a drive relay for cutting off supply of electric power from the power source to the first and second motors, if occurrence of a jam is detected, and a control circuit for controlling an operating state of the second motor such that regenerative power produced at the first motor due to rotation of the conveyance roller is supplied to the second motor, if occurrence of a jam is detected.
    Type: Grant
    Filed: January 31, 2014
    Date of Patent: June 9, 2015
    Assignee: KONICA MINOLTA, INC.
    Inventors: Hidenori Mine, Takahiro Tsujimoto, Masahiro Kamiya, Yutaka Yamamoto, Nobuhiro Matsuo, Seiichi Kirikubo
  • Patent number: 8897663
    Abstract: An induction heating device including a coil which inductively heats a workpiece of a fuser with an input voltage obtained from an alternating current voltage by rectification; a switching element coupled in series with the coil; a peak voltage detector which detects a peak value of the input voltage; an effective voltage detector which detects an effective value of the input voltage; a crest factor calculator which calculates an actual crest factor of the input voltage based on the peak value of the input voltage and the effective value of the input voltage; and a power controller which achieves control of power to the fuser by controlling the duty ratio of ON and OFF periods of the switching element.
    Type: Grant
    Filed: April 26, 2012
    Date of Patent: November 25, 2014
    Assignee: Konica Minolta, Inc.
    Inventors: Atsushi Yamaguchi, Seiichi Kirikubo, Yutaka Yamamoto, Takahiro Tsujimoto, Hiroyuki Watanabe, Hidenori Mine, Masato Ishii
  • Publication number: 20140233976
    Abstract: An image forming apparatus having: a power source applying alternating current voltage to the magnetizing coil; a demagnetizing coil switchable between a conductive state and a cutoff state, and when in the conductive state, cancelling out a portion of a magnetic flux produced by the magnetizing coil; a contact switch and a semiconductor switch electrically connected in parallel, and, in combination, bringing the demagnetizing coil into the conductive state or the cutoff state; and a control unit opening or closing the switches separately. The control unit: opens or closes the semiconductor switch in synchronization with a zero-crossing of the alternating current voltage at least when the contact switch is open; opens or closes the contact switch only when the semiconductor switch is closed; and opens the semiconductor switch when the demagnetizing coil brought into the conductive state by the contact switch needs to be maintained in the conductive state.
    Type: Application
    Filed: February 12, 2014
    Publication date: August 21, 2014
    Applicant: KONICA MINOLTA, INC.
    Inventors: Seiichi KIRIKUBO, Masahiro Kamiya, Takahiro Tsujimoto, Yutaka Yamamoto, Hidenori Mine, Nobuhiro Matsuo
  • Publication number: 20140219668
    Abstract: An image forming apparatus includes a timing roller for conveying paper in the image forming apparatus, a first motor receiving supply of electric power from a power source for driving the timing roller, a second motor receiving supply of electric power from the power source, a sensor for detecting whether a jam occurs at the conveyance roller, a drive relay for cutting off supply of electric power from the power source to the first and second motors, if occurrence of a jam is detected, and a control circuit for controlling an operating state of the second motor such that regenerative power produced at the first motor due to rotation of the conveyance roller is supplied to the second motor, if occurrence of a jam is detected.
    Type: Application
    Filed: January 31, 2014
    Publication date: August 7, 2014
    Applicant: KONICA MINOLTA, INC.
    Inventors: Hidenori Mine, Takahiro Tsujimoto, Masahiro Kamiya, Yutaka Yamamoto, Nobuhiro Matsuo, Seiichi Kirikubo
  • Publication number: 20140064768
    Abstract: An electromagnetic induction heating apparatus comprises: a resonance circuit that includes a inductor and a capacitor; a direct-current electric power supply; and a switching element performing ON and OFF switching of electric power supplied to the resonance circuit by the direct-current electric power supply; performs intermittent control of the electric power supply by controlling the ON and OFF switching at regular intervals, and by performing control to stop the electric power supply when not controlling the ON and OFF switching, wherein during the intermittent control, the switching control unit performs gradual control such that, upon beginning the control of the ON and OFF switching, the electric power supply gradually increases to reach a target value, and upon stopping the control of the ON and OFF switching, the electric power supply gradually decreases from the target value until stopping, such that the gradual decrease involves fewer steps than the gradual increase.
    Type: Application
    Filed: August 30, 2013
    Publication date: March 6, 2014
    Applicant: Konica Minolta, Inc.
    Inventors: Seiichi Kirikubo, Masaaki Goto, Yutaka Yamamoto, Takahiro Tsujimoto, Hiroyuki Watanabe, Hidenori Mine, Masato Ishii