Patents by Inventor Ryo TAKATSUKA
Ryo TAKATSUKA 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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Patent number: 9891557Abstract: An image formation apparatus includes: an intermediate transfer belt that carries and conveys a developer image formed by an image formation section; a driver that conveys the intermediate transfer belt in a predetermined direction; a transfer device that transfers the developer image carried on the intermediate transfer belt onto a predetermined medium; a first detector that detects a belt conveyance speed, which is the speed of the intermediate transfer belt conveyed; a controller that controls the driver; a conveyer section that conveys the medium to the transfer device; and a second detector that detects a medium conveyance speed, which is the speed of the medium conveyed by the conveyer section. The controller controls driving of the driver on the basis of the belt conveyance speed and the medium conveyance speed.Type: GrantFiled: September 8, 2016Date of Patent: February 13, 2018Assignee: Oki Data CorporationInventor: Ryo Takatsuka
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Publication number: 20170261890Abstract: An image forming apparatus includes a transfer belt, a medium conveyer, a controller, a transfer unit, and a first detector. The medium conveyer conveys a recording medium at a medium conveying speed. The controller sets the medium conveying speed to a first speed corresponding to a belt conveying speed in a first period, to a second speed lower than the first speed in a second period, to a third speed higher than the second speed and different from the first speed in a third period, and to the first speed in a fourth period. The transfer unit transfers the conveyed developer image onto the conveyed recording medium. The first detector performs detection of the recording medium in the first or second period. The controller sets a length of the third period on the basis of a result of the detection performed by the first detector.Type: ApplicationFiled: February 17, 2017Publication date: September 14, 2017Applicant: Oki Data CorporationInventors: Ryo TAKATSUKA, Masakazu HIROI
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Publication number: 20170075261Abstract: An image formation apparatus includes: an intermediate transfer belt that carries and conveys a developer image formed by an image formation section; a driver that conveys the intermediate transfer belt in a predetermined direction; a transfer device that transfers the developer image carried on the intermediate transfer belt onto a predetermined medium; a first detector that detects a belt conveyance speed, which is the speed of the intermediate transfer belt conveyed; a controller that controls the driver; a conveyer section that conveys the medium to the transfer device; and a second detector that detects a medium conveyance speed, which is the speed of the medium conveyed by the conveyer section. The controller controls driving of the driver on the basis of the belt conveyance speed and the medium conveyance speed.Type: ApplicationFiled: September 8, 2016Publication date: March 16, 2017Applicant: Oki Data CorporationInventor: Ryo TAKATSUKA
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Patent number: 9098028Abstract: An image forming apparatus includes an image forming part to form a developer image on a recording medium, a fuser part that includes a fuser member and a heat application member to fix the developer image on the recording medium, a heat application control part to control the heat application member so that a temperature of the fuser member falls within a target temperature range that has been set, a temperature setting part to set a first target temperature range and a second target temperature range. The first target temperature range is a target temperature range for a first fusion that is performed on a first surface of the recording medium, and the second target temperature range is another target temperature range, which is lower than the first target temperature range, for a second fusion that is performed on the first surface of the recording medium.Type: GrantFiled: May 28, 2013Date of Patent: August 4, 2015Assignee: Oki Data CorporationInventor: Ryo Takatsuka
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Patent number: 9024477Abstract: A high voltage power source device includes piezoelectric transformers, each of the piezoelectric transformers being formed with a primary electrode and a secondary electrode on piezoelectric ceramics, receiving a primary voltage at the primary electrode, and generating a second voltage from the secondary electrode, switching elements, each of the switching elements driving a respective one of the piezoelectric transformers, and primary voltage supply devices, each of the primary voltage supply devices supplying the primary voltage to the primary electrode of the respective one of the piezoelectric transformers by driving the respective one of the switching elements when the secondary voltage is generated from the respective one of the second electrodes, wherein the respective one of the primary voltage supply devices supplies the primary voltage to the respective one of the primary electrodes by driving the respective one of the switching elements at the same frequency.Type: GrantFiled: February 16, 2012Date of Patent: May 5, 2015Assignee: Oki Data CorporationInventor: Ryo Takatsuka
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Publication number: 20130322906Abstract: An image forming apparatus includes an image forming part to form a developer image on a recording medium, a fuser part that includes a fuser member and a heat application member to fix the developer image on the recording medium, a heat application control part to control the heat application member so that a temperature of the fuser member falls within a target temperature range that has been set, a temperature setting part to set a first target temperature range and a second target temperature range. The first target temperature range is a target temperature range for a first fusion that is performed on a first surface of the recording medium, and the second target temperature range is another target temperature range, which is lower than the first target temperature range, for a second fusion that is performed on the first surface of the recording medium.Type: ApplicationFiled: May 28, 2013Publication date: December 5, 2013Inventor: Ryo TAKATSUKA
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Patent number: 8537414Abstract: An image forming apparatus is capable of adjusting a print density with a plurality of set values including a first set value and a second set value. The image forming apparatus includes a storage unit for storing a first density as a target value of the print density; a density detection unit for detecting a second density as a print density of an image printed on a transfer medium; and a control unit for adjusting the print density. The control unit compares the first density and the second density, and calculates a first correction value applied to one of the first set value and the second set value for correcting the second density to the first density according to a density difference generation condition determined in advance. The control unit corrects the first set value or the second set value according to the first correction value for adjusting color balance.Type: GrantFiled: June 30, 2010Date of Patent: September 17, 2013Assignee: Oki Data CorporationInventor: Ryo Takatsuka
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Publication number: 20120212061Abstract: A high voltage power source device includes piezoelectric transformers, each of the piezoelectric transformers being formed with a primary electrode and a secondary electrode on piezoelectric ceramics, receiving a primary voltage at the primary electrode, and generating a second voltage from the secondary electrode, switching elements, each of the switching elements driving a respective one of the piezoelectric transformers, and primary voltage supply devices, each of the primary voltage supply devices supplying the primary voltage to the primary electrode of the respective one of the piezoelectric transformers by driving the respective one of the switching elements when the secondary voltage is generated from the respective one of the second electrodes, wherein the respective one of the primary voltage supply devices supplies the primary voltage to the respective one of the primary electrodes by driving the respective one of the switching elements at the same frequency.Type: ApplicationFiled: February 16, 2012Publication date: August 23, 2012Applicant: Oki Data CorporationInventor: Ryo TAKATSUKA
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Publication number: 20110001990Abstract: An image forming apparatus is capable of adjusting a print density with a plurality of set values including a first set value and a second set value. The image forming apparatus includes a storage unit for storing a first density as a target value of the print density; a density detection unit for detecting a second density as a print density of an image printed on a transfer medium; and a control unit for adjusting the print density. The control unit compares the first density and the second density, and calculates a first correction value applied to one of the first set value and the second set value for correcting the second density to the first density according to a density difference generation condition determined in advance. The control unit corrects the first set value or the second set value according to the first correction value for adjusting color balance.Type: ApplicationFiled: June 30, 2010Publication date: January 6, 2011Inventor: Ryo TAKATSUKA