Patents by Inventor Yasuyuki Inada

Yasuyuki Inada 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: 20210003938
    Abstract: A developing device, includes: a developing sleeve supported rotatably, the developing sleeve having a hollow, substantially cylindrical shape; a magnet part having a substantially columnar shape, the magnet part having magnetic poles disposed side by side around an axis, the magnet part being disposed substantially coaxially with the developing sleeve inside the developing sleeve; a rod fastened to the magnet part, the rod extending from one end in an extending direction of the axis of the magnet part, the rod being pulled out from one axial end of the developing sleeve; and a holder attached to a portion of the rod pulled out from the developing sleeve, the holder being fastened to a fastening target, the holder maintaining the rod, the holder regulating rotation of the magnet part, wherein adjustment of the holder in fastening position enables disposition and holding of the rod at an optional position.
    Type: Application
    Filed: June 17, 2020
    Publication date: January 7, 2021
    Inventors: Futoshi OKAZAKI, Yasuyuki INADA, Noriyuki KINPARA, Hideaki IKEDA, Takeru KINOSHITA, Junji MURAKAWA
  • Publication number: 20200333728
    Abstract: An image forming apparatus includes: a job acquirer that acquires a print job; a photoconductor including a surface on which a toner image is to be formed; an electrifying member that electrifies the photoconductor; an exposure member that exposes the photoconductor; a developing member that supplies toner to the photoconductor; a cleaner that cleans the photoconductor; and a controller connected to the job acquirer to control the image forming apparatus, wherein the controller computes a first non-toner region that is provided on the surface of the photoconductor when the toner image is formed on the photoconductor, the first non-toner region not containing toner in a longitudinal direction of the surface of the photoconductor, and the controller causes the exposure member and the developing member to form the toner image on the photoconductor and to form a set of toner patches in the first non-toner region.
    Type: Application
    Filed: April 9, 2020
    Publication date: October 22, 2020
    Inventors: YAN SHEN, HIDEO YAMAKI, FUTOSHI OKAZAKI, YASUYUKI INADA, TAKAHIRO KURODA, YU MUKOBAYASHI, YOSHITAKA NOMURA, MOTOKI NAKANO
  • Patent number: 9851658
    Abstract: A developing device includes a developer carrying member and first and second conveyance members. The first conveyance member conveys a developer in a first direction through a first conveyance path to the developer carrying member. The second conveyance member conveys the developer in a second direction through a second conveyance path included in a circulation path along with the first conveyance path. The second conveyance member has a helical second screw around a second shaft. The second conveyance path includes a developer replenishing port and a developer discharge port. The second screw is approximately constant in diameter in a second section being a portion extending a predetermined distance from an end of the discharge port in the second direction when viewed in a top view. The second screw conveys the developer at a lower speed in the second section than on an upstream side with respect to the second section.
    Type: Grant
    Filed: November 3, 2015
    Date of Patent: December 26, 2017
    Assignee: KONICA MINOLTA, INC.
    Inventors: Yasuyuki Inada, Yu Mukobayashi, Yuusuke Mandai, Kanji Nakayama, Shinichi Yoshimoto, Junji Kanda
  • Patent number: 9753394
    Abstract: An image forming device includes: a charging unit configured to apply charging bias voltage to a charging member and charge a surface of an image carrying body; an exposure unit configured to expose the surface of the image carrying body, and form an electrostatic latent image; a developing unit configured to apply developing bias voltage to a developer carrying body, and develop the electrostatic latent image; and a control unit configured to control timing to start applying the developing bias voltage relative to timing to start applying the charging bias voltage, wherein the control unit performs control such that the larger an absolute value of the charging bias voltage is, the shorter an interval from timing to start applying the charging bias voltage to timing to start applying the developing bias voltage becomes, and such that the smaller the absolute value is, the longer the interval becomes.
    Type: Grant
    Filed: May 19, 2016
    Date of Patent: September 5, 2017
    Assignee: KONICA MINOLTA, INC.
    Inventors: Kanji Nakayama, Shinichi Yoshimoto, Junji Kanda, Yasuyuki Inada, Yuusuke Mandai, Yu Mukobayashi
  • Patent number: 9599924
    Abstract: There are provided a developing device including a developing roller to develop an image carrier by use of a two-component developer and a developing bias power source, and an image forming apparatus using the developing device. The developing device further includes a variable resistance unit provided on a bias apply path to apply a bias from the developing power source to the developing roller, and a resistance controller to control a resistance value of the variable resistance unit based on a charge amount signal indicating a toner's charge amount in a developer layer on the developing roller. The resistance controller provides a low mode to lower the resistance of the variable resistance unit and a high mode to enhance the resistance. The low mode is set if the toner charge amount is low, and the high mode is set if the toner charge amount is high.
    Type: Grant
    Filed: March 8, 2016
    Date of Patent: March 21, 2017
    Assignee: KONICA MINOLTA, INC.
    Inventors: Yuusuke Mandai, Yasuyuki Inada, Yu Mukobayashi, Shinichi Yoshimoto, Junji Kanda, Kanji Nakayama
  • Patent number: 9568876
    Abstract: A damage amount determination device, which is used for an image forming device that forms an image on paper, includes an information acquisition unit that acquires information related to whiteness of the paper used for printing and a damage amount determination unit that determines an amount of damage, which is caused by the paper to a predetermined component of the image forming device when the paper passes through the predetermined component, based on the information related to the whiteness.
    Type: Grant
    Filed: December 31, 2014
    Date of Patent: February 14, 2017
    Assignee: Konica Minolta, Inc.
    Inventors: Shinji Ogawa, Yu Mukobayashi, Yasuyuki Inada, Masato Kimura, Yuusuke Mandai
  • Patent number: 9551958
    Abstract: A developing apparatus that develops an electrostatic latent image on an image supporting body using developer including toner and carrier includes a circulation path where the developer circulates, a discharge path connected to the circulation path through which some of the developer passes, and a first recycle path connected to the discharge path and allowing some of the developer flowing into the discharge path to return to the circulation path. The discharge path includes a discharge opening for discharging the developer flowing into the discharge path, and a first return opening for connecting to the first recycle path. The first return opening is located on an upper side in a vertical direction with respect to the discharge opening and located on an upstream side in a pass-through direction of the developer flowing into the discharge path.
    Type: Grant
    Filed: April 23, 2015
    Date of Patent: January 24, 2017
    Assignee: KONICA MINOLTA, INC.
    Inventors: Yuusuke Mandai, Yasuyuki Inada, Shinji Ogawa, Masato Kimura, Yu Mukobayashi
  • Publication number: 20160363882
    Abstract: An image forming device includes: a charging unit configured to apply charging bias voltage to a charging member and charge a surface of an image carrying body; an exposure unit configured to expose the surface of the image carrying body, and form an electrostatic latent image; a developing unit configured to apply developing bias voltage to a developer carrying body, and develop the electrostatic latent image; and a control unit configured to control timing to start applying the developing bias voltage relative to timing to start applying the charging bias voltage, wherein the control unit performs control such that the larger an absolute value of the charging bias voltage is, the shorter an interval from timing to start applying the charging bias voltage to timing to start applying the developing bias voltage becomes, and such that the smaller the absolute value is, the longer the interval becomes.
    Type: Application
    Filed: May 19, 2016
    Publication date: December 15, 2016
    Applicant: Konica Minolta, Inc.
    Inventors: Kanji NAKAYAMA, Shinichi YOSHIMOTO, Junji KANDA, Yasuyuki INADA, Yuusuke MANDAI, Yu MUKOBAYASHI
  • Publication number: 20160274488
    Abstract: There are provided a developing device comprising a developing roller to develop an image carrier by use of a two-component developer and a developing bias power source, and an image forming apparatus using the developing device. The developing device further includes a variable resistance unit provided on a bias apply path to apply a bias from the developing power source to the developing roller, and a resistance controller to control a resistance value of the variable resistance unit based on a charge amount signal indicating a toner's charge amount in a developer layer on the developing roller. The resistance controller provides a low mode to lower the resistance of the variable resistance unit and a high mode to enhance the resistance. The low mode is set if the toner charge amount is low, and the high mode is set if the toner charge amount is high.
    Type: Application
    Filed: March 8, 2016
    Publication date: September 22, 2016
    Applicant: Konica Minolta, Inc.
    Inventors: Yuusuke Mandai, Yasuyuki Inada, Yu Mukobayashi, Shinichi Yoshimoto, Junji Kanda, Kanji Nakayama
  • Publication number: 20160139541
    Abstract: A developing device includes a developer carrying member and first and second conveyance members. The first conveyance member conveys a developer in a first direction through a first conveyance path to the developer carrying member. The second conveyance member conveys the developer in a second direction through a second conveyance path included in a circulation path along with the first conveyance path. The second conveyance member has a helical second screw around a second shaft. The second conveyance path includes a developer replenishing port and a developer discharge port. The second screw is approximately constant in diameter in a second section being a portion extending a predetermined distance from an end of the discharge port in the second direction when viewed in a top view. The second screw conveys the developer at a lower speed in the second section than on an upstream side with respect to the second section.
    Type: Application
    Filed: November 3, 2015
    Publication date: May 19, 2016
    Applicant: Konica Minolta, Inc.
    Inventors: Yasuyuki INADA, Yu MUKOBAYASHI, Yuusuke MANDAI, Kanji NAKAYAMA, Shinichi YOSHIMOTO, Junji KANDA
  • Patent number: 9335711
    Abstract: A fitting structure for fitting a plate-form member to a fitting destination member such that a position of the plate-form member relative to a target member is adjustable, the fitting structure has an adjustment pin inserted, in a fashion movable in a position adjustment direction, in an adjustment hole formed in the plate-form member; and a screw member for fastening the plate-form member to the fitting destination member, wherein a direction of a force of the screw member that acts upon the plate-form member when the screw member is in a position where the screw member fastens the plate-form member points from a side where a gap formed between the adjustment pin and the adjustment hole is smaller to a side where the gap is larger.
    Type: Grant
    Filed: October 23, 2013
    Date of Patent: May 10, 2016
    Assignee: KONICA MINOLTA, INC.
    Inventors: Yuusuke Okuno, Yasuyuki Inada, Kazuki Kobori
  • Publication number: 20150323886
    Abstract: A developing apparatus that develops an electrostatic latent image on an image supporting body, using developer including toner and carrier, includes: a circulation path where the developer circulates; a discharge path which is connected to the circulation path and through which some of the developer passes; and a first recycle path connected to the discharge path and allowing some of the developer flowing into the discharge path to return to the circulation path, wherein the discharge path is provided with: a discharge opening for discharging the developer flowing into the discharge path; and a first return opening for connecting to the first recycle path, and the first return opening is located on an upper side in a vertical direction with respect to the discharge opening and located on an upstream side in a pass-through direction of the developer flowing into the discharge path.
    Type: Application
    Filed: April 23, 2015
    Publication date: November 12, 2015
    Applicant: KONICA MINOLTA, INC.
    Inventors: Yuusuke MANDAI, Yasuyuki INADA, Shinji OGAWA, Masato KIMURA, Yu MUKOBAYASHI
  • Publication number: 20150192886
    Abstract: A damage amount determination device, which is used for an image forming device that forms an image on paper, includes an information acquisition unit that acquires information related to whiteness of the paper used for printing and a damage amount determination unit that determines an amount of damage, which is caused by the paper to a predetermined component of the image forming device when the paper passes through the predetermined component, based on the information related to the whiteness.
    Type: Application
    Filed: December 31, 2014
    Publication date: July 9, 2015
    Applicant: KONICA MINOLTA, INC.
    Inventors: Shinji OGAWA, Yu MUKOBAYASHI, Yasuyuki INADA, Masato KIMURA, Yuusuke MANDAI
  • Publication number: 20140119781
    Abstract: A fitting structure for fitting a plate-form member to a fitting destination member such that a position of the plate-form member relative to a target member is adjustable, the fitting structure has an adjustment pin inserted, in a fashion movable in a position adjustment direction, in an adjustment hole formed in the plate-form member; and a screw member for fastening the plate-form member to the fitting destination member, wherein a direction of a force of the screw member that acts upon the plate-form member when the screw member is in a position where the screw member fastens the plate-form member points from a side where a gap formed between the adjustment pin and the adjustment hole is smaller to a side where the gap is larger.
    Type: Application
    Filed: October 23, 2013
    Publication date: May 1, 2014
    Applicant: Konica Minolta Inc.
    Inventors: Yuusuke OKUNO, Yasuyuki Inada, Kazuki Kobori
  • Patent number: 8521045
    Abstract: An image forming apparatus includes: sensor detecting light intensity and output voltage based on the light intensity; data acquisition part setting reference voltages for the sensor to detect light intensity of bare surface of intermediate transfer member, acquiring, at set reference voltage, voltage output by the sensor on the bare surface as detection data; storage storing the detection data corresponding to the reference voltages; judgment part judging whether to perform image density correction processing; voltage calibration part adjusting output level at light intensity detection; density acquisition part forming toner pattern, and acquiring density data of the toner pattern by causing the sensor having adjusted output level to detect its light intensity; density data correction part reading one piece of detection data referring to output level, and correcting the density data based on the detection data; and image density correction part performing the processing based on the density data.
    Type: Grant
    Filed: June 14, 2011
    Date of Patent: August 27, 2013
    Assignee: Konica Minolta Business Technologies, Inc.
    Inventors: Yasuyuki Inada, Katsuyuki Hirata
  • Patent number: 8145091
    Abstract: A toner image is formed on an image carrier using a toner supplied from a developing roller to which a controlled bias voltage is applied; the toner image is primarily transferred onto an intermediate transfer member; the toner image is secondarily transferred onto a recording sheet using a transfer voltage applied to the secondary transfer roller; and the bias voltage is applied to the secondary transfer roller as a cleaning voltage necessary for cleaning the secondary transfer roller; and the toner adhered to a circumferential surface of the secondary transfer roller is reversely transferred onto the intermediate transfer member.
    Type: Grant
    Filed: February 20, 2009
    Date of Patent: March 27, 2012
    Assignee: Konica Minolta Business Technologies, Inc.
    Inventor: Yasuyuki Inada
  • Publication number: 20110311245
    Abstract: An image forming apparatus includes: sensor detecting light intensity and output voltage based on the light intensity; data acquisition part setting reference voltages for the sensor to detect light intensity of bare surface of intermediate transfer member, acquiring, at set reference voltage, voltage output by the sensor on the bare surface as detection data; storage storing the detection data corresponding to the reference voltages; judgment part judging whether to perform image density correction processing; voltage calibration part adjusting output level at light intensity detection; density acquisition part forming toner pattern, and acquiring density data of the toner pattern by causing the sensor having adjusted output level to detect its light intensity; density data correction part reading one piece of detection data referring to output level, and correcting the density data based on the detection data; and image density correction part performing the processing based on the density data.
    Type: Application
    Filed: June 14, 2011
    Publication date: December 22, 2011
    Applicant: Konica Minolta Business Technologies, Inc.
    Inventors: Yasuyuki Inada, Katsuyuki Hirata
  • Patent number: 8068774
    Abstract: An image-forming apparatus comprises an intermediate transfer member having a hard release layer on the surface that receives a primarily transferred toner image from a latent image-supporting member on the hard release layer and secondarily transfers the toner image to an image-receiving medium, wherein, when the difference ??sd between the dispersion-force component of surface free energy of the intermediate transfer member surface ?sd(itm) and the dispersion-force component of surface free energy of the latent image-supporting member surface ?sd(pc) is defined by the following Formula: ??sd=?sd(pc)??sd(itm), ??sd is 5 mN/m or less.
    Type: Grant
    Filed: April 11, 2008
    Date of Patent: November 29, 2011
    Assignee: Konica Minolta Business Technologies, Inc.
    Inventors: Tomohide Mori, Yasuyuki Inada, Toshiaki Hiroi
  • Patent number: 7920813
    Abstract: An image-forming apparatus, including: a latent-image supporting member, and an intermediate transfer member that supports a toner image primarily-transferred thereon from the latent-image supporting member, secondarily-transfers the supported toner image onto an image receiving medium, and has a hard releasing layer on the surface thereof, and a ratio Rv (Vbt/Vpc) between a surface moving speed Vbt of the intermediate transfer member and a peripheral speed Vpc of the latent-image supporting member satisfies the following relational expression: ?5×10?6×Hu+1.0087?Rv??5×10?6×Hu+1.0167 wherein Hu is a universal hardness (N/mm2) of the surface of the intermediate transfer member, and is set to 220 N/mm2 or more.
    Type: Grant
    Filed: May 29, 2008
    Date of Patent: April 5, 2011
    Assignee: Konica Minolta Business Technologies, Inc.
    Inventors: Yasuyuki Inada, Tomohide Mori, Toshiaki Hiroi
  • Publication number: 20110064466
    Abstract: In an image forming apparatus comprising an intermediate transfer belt (4) in a form of endless loop stretched over a plurality of stretch roller to move around, a plurality of photo conductors (9) aligned along the intermediate transfer belt, a plurality of primary transfer rollers (6Y) which respectively opposes to the photoconductors and is pressed against the photoconductor with interposition of the intermediate transfer belt to form a nip, and a power source for applying a voltage to the primary transfer rollers, the primary transfer rollers (6Y) being arranged to be shifted with reference to the photoconductors (9) in the moving direction of the intermediate transfer belt (4), a shifted amount (D) of at least one of the primary transfer rollers (6Y) with reference to the photoconductor (9) is different from that of another primary transfer roller with reference to the respective photoconductors.
    Type: Application
    Filed: September 14, 2010
    Publication date: March 17, 2011
    Applicant: Konica Minolta Business Technologies, Inc.
    Inventor: Yasuyuki Inada