Patents by Inventor Shunichi Takaya
Shunichi Takaya 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).
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Publication number: 20180059578Abstract: A developing device includes: a plurality of development sections arranged in an axis direction of a developer bearing member; a communication section disposed at a boundary of adjacent two development sections of the development sections, and configured to communicate between the two development sections; and a control section configured to perform an operation of moving the developer between the two development sections through the communication section to equalize degradation states of the developer in the two development sections.Type: ApplicationFiled: July 13, 2017Publication date: March 1, 2018Inventors: Shota SAKURAI, Shunichi TAKAYA, Kei OKAMURA, Hideaki TANAKA, Kazuteru ISHIZUKA, Kei YUASA
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Patent number: 9857746Abstract: An image forming apparatus includes: an image forming unit including a rotating member and being configured to form an image on a paper sheet in accordance with print job data; a rotation position detecting unit configured to detect a rotation position of the rotating member; an image density detecting unit configured to detect a density in an image formed on an image carrier; an image information analyzing unit configured to analyze image information in the print job data; a density profile managing unit configured to form a correction patch image on the image carrier, and create and manage a density profile indicating periodical density unevenness; a correction data creating unit configured to create correction data; a density correcting unit configured to perform density correction; and a density correction control unit configured to predict an appearance of periodical density unevenness, and set conditions for the density correction.Type: GrantFiled: June 23, 2016Date of Patent: January 2, 2018Assignee: KONICA MINOLTA, INC.Inventors: Kei Okamura, Hiroshi Morimoto, Wataru Watanabe, Shunichi Takaya
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Publication number: 20170102659Abstract: An image forming apparatus includes an image forming section; a density detection section configured to detect the density of toner image formed on an image bearing member in a sub scanning direction; and a density-unevenness correction section configured to calculate a first correction amount based on the detection result of the density detection section and calculate a second correction amount different from the first correction amount in phase.Type: ApplicationFiled: September 30, 2016Publication date: April 13, 2017Inventors: Shunichi TAKAYA, Makoto IKEDA
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Publication number: 20170102658Abstract: With reference to a correction value revision parameter table, a periodic non-uniformity correction value corresponding to changed rotational speed is obtained from the correction value revision parameter table, and set as a new periodic non-uniformity correction value corresponding to the rotational speed of a rotary component, and thereby a gradation which is an image formation parameter of image data is corrected.Type: ApplicationFiled: October 4, 2016Publication date: April 13, 2017Applicant: KONICA MINOLTA, INC.Inventors: Makoto IKEDA, Shunichi TAKAYA
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Patent number: 9606489Abstract: An image forming apparatus uses a first developer conveyance amount and a first correction amount calculated respectively in a first state, a second developer conveyance amount and a second correction amount calculated respectively in a second state in which the developer conveyance amount is smaller than the developer conveyance amount of the first state, and a third developer conveyance amount detected in a third state in which the developer conveyance amount is smaller than the developer conveyance amount of the first state and is larger than the developer conveyance amount of the second state to calculate a third correction amount for correcting density unevenness of the toner image in the third state, and perform control to correct the density unevenness of the toner image based on the calculated third correction amount.Type: GrantFiled: February 29, 2016Date of Patent: March 28, 2017Assignee: KONICA MINOLTA, INC.Inventors: Shunichi Takaya, Hiroshi Morimoto, Wataru Watanabe, Kei Okamura
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Publication number: 20160378038Abstract: An image forming apparatus includes: an image forming unit including a rotating member; a rotation position detecting unit that detects a rotation position of the rotating member; an image density detecting unit that detects density of an image; an image information analysis unit that analyzes image information; a density profile management unit that manages a density profile; a correction data generation unit that generates correction data; a density correction unit that performs density correction; and a density correction control unit that sets a density correction level, wherein when the density correction level is set at reference accuracy, the density correction unit corrects density, and when the density correction level is set at accuracy higher than the reference accuracy, the density profile management unit forms a corrective patch image and generates a new density profile, the correction data generation unit updates the correction data, and the density correction unit corrects density.Type: ApplicationFiled: June 3, 2016Publication date: December 29, 2016Inventors: Hiroshi MORIMOTO, Wataru Watanabe, Shunichi Takaya, Kei Okamura
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Publication number: 20160378035Abstract: An image forming apparatus includes: an image forming unit including a rotating member and being configured to form an image on a paper sheet in accordance with print job data; a rotation position detecting unit configured to detect a rotation position of the rotating member; an image density detecting unit configured to detect a density in an image formed on an image carrier; an image information analyzing unit configured to analyze image information in the print job data; a density profile managing unit configured to form a correction patch image on the image carrier, and create and manage a density profile indicating periodical density unevenness; a correction data creating unit configured to create correction data; a density correcting unit configured to perform density correction; and a density correction control unit configured to predict an appearance of periodical density unevenness, and set conditions for the density correction.Type: ApplicationFiled: June 23, 2016Publication date: December 29, 2016Inventors: Kei OKAMURA, HIROSHI MORIMOTO, WATARU WATANABE, SHUNICHI TAKAYA
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Publication number: 20160266533Abstract: An image forming apparatus uses a first developer conveyance amount and a first correction amount calculated respectively in a first state, a second developer conveyance amount and a second correction amount calculated respectively in a second state in which the developer conveyance amount is smaller than the developer conveyance amount of the first state, and a third developer conveyance amount detected in a third state in which the developer conveyance amount is smaller than the developer conveyance amount of the first state and is larger than the developer conveyance amount of the second state to calculate a third correction amount for correcting density unevenness of the toner image in the third state, and perform control to correct the density unevenness of the toner image based on the calculated third correction amount.Type: ApplicationFiled: February 29, 2016Publication date: September 15, 2016Applicant: KONICA MINOLTA, INC.Inventors: Shunichi TAKAYA, Hiroshi MORIMOTO, Wataru WATANABE, Kei OKAMURA
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Patent number: 9423723Abstract: An image forming apparatus of the present invention includes an image carrying member capable of carrying an image, a paper conveying unit, a toner layer forming unit, and a transfer unit. The paper conveying unit conveys a paper to the image carrying member. The toner layer forming unit forms a toner layer having a predetermined width at an outer side of the paper from a position corresponding to an end portion of the paper on a surface of the image carrying member. The transfer unit conveys the paper in press-contact with the image carrying member with the formed image and toner layer and transfers the image to the paper.Type: GrantFiled: May 21, 2015Date of Patent: August 23, 2016Assignee: KONICA MINOLTA, INC.Inventors: Shunichi Takaya, Hiroyuki Saito
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Patent number: 9310749Abstract: An image forming apparatus of the present invention includes an image carrying member capable of carrying an image, a paper conveying unit, a foreign matter detection unit, and a toner layer forming unit. The paper conveying unit conveys a paper to the image carrying member. The foreign matter detection unit detects a foreign matter projecting from the end portion of the paper. The toner layer forming unit forms a toner layer on the surface of the image carrying member in response to a position of the foreign matter detected by the foreign matter detection unit.Type: GrantFiled: May 20, 2015Date of Patent: April 12, 2016Assignee: Konica Minolta, Inc.Inventors: Hiroyuki Saito, Shunichi Takaya
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Publication number: 20150338782Abstract: An image forming apparatus of the present invention includes an image carrying member capable of carrying an image, a paper conveying unit, a toner layer forming unit, and a transfer unit. The paper conveying unit conveys a paper to the image carrying member. The toner layer forming unit forms a toner layer having a predetermined width at an outer side of the paper from a position corresponding to an end portion of the paper on a surface of the image carrying member. The transfer unit conveys the paper in press-contact with the image carrying member with the formed image and toner layer and transfers the image to the paper.Type: ApplicationFiled: May 21, 2015Publication date: November 26, 2015Inventors: Shunichi TAKAYA, Hiroyuki SAITO
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Publication number: 20150338818Abstract: An image forming apparatus of the present invention includes an image carrying member capable of carrying an image, a paper conveying unit, a foreign matter detection unit, and a toner layer forming unit. The paper conveying unit conveys a paper to the image carrying member. The foreign matter detection unit detects a foreign matter projecting from the end portion of the paper. The toner layer forming unit forms a toner layer on the surface of the image carrying member in response to a position of the foreign matter detected by the foreign matter detection unit.Type: ApplicationFiled: May 20, 2015Publication date: November 26, 2015Applicant: KONICA MINOLTA, INC.Inventors: Hiroyuki Saito, Shunichi Takaya
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Patent number: 8818245Abstract: A developing device having a housing that houses two-component developer containing carrier and toner, replenishing replenishment carrier to the housing while gradually ejecting developer to outside from an outlet. The developing device includes: transport passage provided in the housing so that developer is transported therein; transport member provided in the housing and rotates to transport the developer; ejection passage having diverged from the transport passage so that a part of the developer transported in the transport passage is conveyed therein to the outlet; and restriction unit configured to restrict an amount of ejected developer so that a first amount of developer is ejected from the outlet when the transport member rotates at a first speed, and a second amount of developer is ejected when it rotates at a second speed. The second amount is smaller than the first amount. The second speed is higher than the first speed.Type: GrantFiled: March 18, 2011Date of Patent: August 26, 2014Assignee: Konica Minolta, Inc.Inventors: Shunichi Takaya, Osamu Maeda
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Patent number: 8712308Abstract: A lubricant coating device related to the present invention is characterized in that it comprises a lubricant supply unit 12 which supplies a lubricant 11 onto an outer peripheral surface of an image carrier 1 that is driven to rotate and a lubricant smoothing unit 13 which is disposed on the downstream side in a rotating direction of the image carrier 1 of the lubricant supply unit 12 and smoothes the lubricant 11 supplied onto the outer peripheral surface. In the lubricant coating device, the lubricant smoothing unit 13 rotates while being in surface contact with the outer peripheral surface of the image carrier 1 and thereby smoothes the lubricant 11 supplied onto the image carrier 1 by the lubricant supply unit 12.Type: GrantFiled: April 19, 2012Date of Patent: April 29, 2014Assignee: Konica Minolta Business Technologies, Inc.Inventors: Ryoei Ikari, Seiko Itagaki, Kazutoshi Kobayashi, Shunichi Takaya, Tatsuya Furuta
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Patent number: 8620189Abstract: There is provided a developer container, which is divided into a first containing part and a second containing part that are communicated with each other at communication parts on the opposite end sides, which has a discharge port at the second containing part, and in which a developer is contained; a developer carrying member that carries the developer within the developer container to adhere it to the image carrying member; a first conveyance member that conveys the developer in the first containing part of the developer container while agitating it; a second conveyance member that conveys the developer in the second containing part of the developer container while agitating it, and supplies the developer to the developer carrying member; a third conveyance member that is arranged between the second conveyance member and the discharge port; a first driving member that rotary-drives the first conveyance member and the second conveyance member; and a second driving member that drives the third driving memberType: GrantFiled: September 8, 2009Date of Patent: December 31, 2013Assignee: Konica Minolta Business Technologies, Inc.Inventors: Toshikazu Suzaki, Shunichi Takaya
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Patent number: 8611797Abstract: A developing device that circulates developer in a circulation passage having first and second conveyance passages, so that the developer is supplied to a developing roller along the first or second conveyance passages, comprising: a first conveyance member in the first conveyance passage driven to rotate to convey the developer in a first conveyance direction; a communicating passage through which the developer flows from the first to second conveyance passages; a second conveyance member in the second conveyance passage driven to rotate to convey the developer in a second conveyance direction; a discharge passage extending from an end portion of the first conveyance passage located downstream in the first conveyance direction; and a passing developer amount changing mechanism configured to change an amount of developer passing through the communicating passage, according to a pressure applied to the developer at a junction between the first conveyance passage and the discharge passage.Type: GrantFiled: March 23, 2011Date of Patent: December 17, 2013Assignee: Konica Minolta Business Technologies, Inc.Inventors: Osamu Maeda, Shunichi Takaya
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Publication number: 20120275837Abstract: A lubricant coating device related to the present invention is characterized in that it comprises a lubricant supply unit 12 which supplies a lubricant 11 onto an outer peripheral surface of an image carrier 1 that is driven to rotate and a lubricant smoothing unit 13 which is disposed on the downstream side in a rotating direction of the image carrier 1 of the lubricant supply unit 12 and smoothes the lubricant 11 supplied onto the outer peripheral surface. In the lubricant coating device, the lubricant smoothing unit 13 rotates while being in surface contact with the outer peripheral surface of the image carrier 1 and thereby smoothes the lubricant 11 supplied onto the image carrier 1 by the lubricant supply unit 12.Type: ApplicationFiled: April 19, 2012Publication date: November 1, 2012Applicant: KONICA MINOLTA BUSINESS TECHNOLOGIES, INC.Inventors: Ryoei IKARI, Seiko ITAGAKI, Kazutoshi KOBAYASHI, Shunichi TAKAYA, Tatsuya FURUTA
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Patent number: 8090289Abstract: A charging device has a sheet electrode with triangular pins aligned in a first direction and a cleaner unit for cleaning the sheet electrode while moving in the first direction and in a second direction opposite to the first direction. The cleaner unit has a grinding member for grinding the sheet electrode, a first collecting member, which is disposed downstream in the first direction from the grinding member, for collecting extraneous matter, a second collecting member, which is disposed downstream in the second direction from the grinding member, for collecting extraneous matter, and a switching section for changing a contact state of the first collecting member with the sheet electrode and a contact state of the second collecting member with the sheet electrode.Type: GrantFiled: July 1, 2010Date of Patent: January 3, 2012Assignee: Konica Minolta Business Technologies, Inc.Inventors: Osamu Maeda, Shunichi Takaya
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Publication number: 20110236074Abstract: A developing device that circulates developer in a circulation passage having first and second conveyance passages, so that the developer is supplied to a developing roller along the first or second conveyance passages, comprising: a first conveyance member in the first conveyance passage driven to rotate to convey the developer in a first conveyance direction; a communicating passage through which the developer flows from the first to second conveyance passages; a second conveyance member in the second conveyance passage driven to rotate to convey the developer in a second conveyance direction; a discharge passage extending from an end portion of the first conveyance passage located downstream in the first conveyance direction; and a passing developer amount changing mechanism configured to change an amount of developer passing through the communicating passage, according to a pressure applied to the developer at a junction between the first conveyance passage and the discharge passage.Type: ApplicationFiled: March 23, 2011Publication date: September 29, 2011Applicant: Konica Minolta Business Technologies, Inc.Inventors: Osamu MAEDA, Shunichi Takaya
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Publication number: 20110229209Abstract: A developing device having a housing that houses two-component developer containing carrier and toner, replenishing replenishment carrier to the housing while gradually ejecting developer to outside from an outlet. The developing device includes: transport passage provided in the housing so that developer is transported therein; transport member provided in the housing and rotates to transport the developer; ejection passage having diverged from the transport passage so that a part of the developer transported in the transport passage is conveyed therein to the outlet; and restriction unit configured to restrict an amount of ejected developer so that a first amount of developer is ejected from the outlet when the transport member rotates at a first speed, and a second amount of developer is ejected when it rotates at a second speed. The second amount is smaller than the first amount. The second speed is higher than the first speed.Type: ApplicationFiled: March 18, 2011Publication date: September 22, 2011Applicant: Konica Minolta Business Technologies, Inc.Inventors: Shunichi TAKAYA, Osamu MAEDA