Patents by Inventor Hisashi Ishizuka
Hisashi Ishizuka 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: 11962433Abstract: A switch device includes a plurality of communication ports; a switch unit configured to relay a frame, which has been transmitted from a function unit and to which information including an ID of a VLAN is added, to another function unit via a communication port; and a duplication unit configured to, when the diagnosis device is connected to another switch device, duplicate the frame to be relayed via a designated communication port among the plurality of communication ports, and generate a duplicate frame for diagnosis that is a frame obtained by adding, to a duplicate frame obtained through the duplication, specific information indicating that the duplicate frame for diagnosis should be transmitted to the diagnosis device. The switch unit outputs the duplicate frame for diagnosis generated by the duplication unit from a communication port corresponding to the other switch device.Type: GrantFiled: February 2, 2021Date of Patent: April 16, 2024Assignees: SUMITOMO ELECTRIC INDUSTRIES, LTD., SUMITOMO WIRING SYSTEMS, LTD., AUTONETWORKS TECHNOLOGIES, LTD., TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Akihito Iwata, Tatsuya Izumi, Hirofumi Urayama, Tadashi Matsumoto, Darmawan Go, Hideki Maeda, Takeshi Hagihara, Masashi Amesara, Hisashi Furukawa, Shu Ishizuka, Hideki Goto
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Patent number: 11327426Abstract: An image forming device that forms an image on a medium, includes: a heater that heats the medium; a control unit that controls the heater; a first path that receives input voltage from an external power supply, converts the input voltage into desired voltage, and supplies the desired voltage to the control unit; a second path that divides the input voltage received by the first path and supplies the input voltage to the heater; a control element that is connected to the second path and controls ON/OFF switching of the heater according to control from the control unit; and a disconnection unit that disconnects the second path depending on condition of the input voltage.Type: GrantFiled: May 15, 2020Date of Patent: May 10, 2022Assignee: Oki Electric Industry Co., Ltd.Inventors: Kazuo Nakazawa, Noriyasu Sakamoto, Hisashi Ishizuka, Toru Mogi
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Publication number: 20200379393Abstract: An image forming device that forms an image on a medium, includes: a heater that heats the medium; a control unit that controls the heater; a first path that receives input voltage from an external power supply, converts the input voltage into desired voltage, and supplies the desired voltage to the control unit; a second path that divides the input voltage received by the first path and supplies the input voltage to the heater; a control element that is connected to the second path and controls ON/OFF switching of the heater according to control from the control unit; and a disconnection unit that disconnects the second path depending on condition of the input voltage.Type: ApplicationFiled: May 15, 2020Publication date: December 3, 2020Applicant: Oki Data CorporationInventors: Kazuo NAKAZAWA, Noriyasu SAKAMOTO, Hisashi ISHIZUKA, Toru MOGI
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Patent number: 8144019Abstract: An image forming apparatus is supplied capable of improving distance precision and relative position precision of a RFID tag and RFID unit so as to heighten communication quality of image forming apparatus. The image forming apparatus comprises attachable and removable image forming unit which has a RFID tag, and a RFID unit which is located in a LED head installing section and communicates with the RFID tag through radio communication, wherein the RFID tag is located on a side wall of the image forming unit and faces the RFID unit.Type: GrantFiled: December 31, 2008Date of Patent: March 27, 2012Assignee: Oki Data CorporationInventor: Hisashi Ishizuka
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Patent number: 8126351Abstract: An aspect of the invention provides a printing apparatus having a plurality of operation modes that comprises: a storage unit configured to store power consumption values per unit time for each operation mode and a standard power consumption value indicating an energy-saving standard power consumption during a determined period of use; an operation mode management unit configured to measure an operation time of the printing apparatus for each operation mode; a calculator configured to calculate an estimated total power consumption value during the determined period of use from measured operation time in each operation mode and from the power consumption values stored in the storage unit; and a display unit configured to display both of the standard power consumption value obtained from the storage unit and the calculated estimated total power consumption value.Type: GrantFiled: September 30, 2008Date of Patent: February 28, 2012Assignee: Oki Data CorporationInventor: Hisashi Ishizuka
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Patent number: 7782491Abstract: In a color pair selecting section, a color pair which is used for 2-color printing is selectively inputted from a plurality of colors. In a print data separating section, print data is separated into data in different printing forms. In a print data developing section, one of the data in the different printing forms is color converted and developed by using one of the color pair and the other data in the different printing forms is color converted and developed by using the other one of the color pair. In an image drum up/down section, image drums to form images by colors other than the color pair are discriminated and held inoperative. Deterioration of expressing ability in the 2-color printing is prevented and a decrease in lives of the image drums which are not used is prevented.Type: GrantFiled: September 2, 2004Date of Patent: August 24, 2010Assignee: Oki Data CorporationInventor: Hisashi Ishizuka
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Publication number: 20090184817Abstract: An image forming apparatus is supplied capable of improving distance precision and relative position precision of RFID tag and RFID unit so as to heighten communication quality of image forming apparatus. The image forming apparatus comprises attachable and removable exchange cartridge which is used for accommodating toner and has a RFID tag, and RFID unit that communicates with the RFID tag through radio communication, wherein the exchange cartridge is furnished as retreating in non-operational time; the exposure head unit is furnished movably; in the case that the exchange cartridge retreats, the exposure head unit moves together with the exchange cartridge.Type: ApplicationFiled: December 31, 2008Publication date: July 23, 2009Applicant: OKI DATA CORPORATIONInventor: Hisashi ISHIZUKA
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Publication number: 20090110427Abstract: An aspect of the invention provides a printing apparatus having a plurality of operation modes that comprises: a storage unit configured to store power consumption values per unit time for each operation mode and a standard power consumption value indicating an energy-saving standard power consumption during a determined period of use; an operation mode management unit configured to measure an operation time of the printing apparatus for each operation mode; a calculator configured to calculate an estimated total power consumption value during the determined period of use from measured operation time in each operation mode and from the power consumption values stored in the storage unit; and a display unit configured to display both of the standard power consumption value obtained from the storage unit and the calculated estimated total power consumption value.Type: ApplicationFiled: September 30, 2008Publication date: April 30, 2009Applicant: Oki Data CorporationInventor: Hisashi ISHIZUKA
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Publication number: 20050052702Abstract: In a color pair selecting section, a color pair which is used for 2-color printing is selectively inputted from a plurality of colors. In a print data separating section, print data is separated into data in different printing forms. In a print data developing section, one of the data in the different printing forms is color converted and developed by using one of the color pair and the other data in the different printing forms is color converted and developed by using the other one of the color pair. In an image drum up/down section, image drums to form images by colors other than the color pair are discriminated and held inoperative. Deterioration of expressing ability in the 2-color printing is prevented and a decrease in lives of the image drums which are not used is prevented.Type: ApplicationFiled: September 2, 2004Publication date: March 10, 2005Inventor: Hisashi Ishizuka