Patents by Inventor Shiomi ANDOU
Shiomi ANDOU 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: 20230330999Abstract: A liquid discharging head includes a nozzle plate having a plurality of nozzles from which liquid is discharged; a plurality of individual liquid chambers that are communicably connected to the plurality of nozzles, respectively; a common liquid chamber that supplies liquid to the plurality of individual liquid chambers; and a circulation common liquid chamber that leads to a plurality of circulation channels. A part of the common liquid chamber overlaps the circulation common liquid chamber from a direction in which liquid is discharged from the nozzles, and another part of the common liquid chamber overlaps the circulation common liquid chamber from a direction orthogonal to both the direction in which liquid is discharged from the nozzles and a direction in which the nozzles are aligned.Type: ApplicationFiled: June 21, 2023Publication date: October 19, 2023Applicant: Ricoh Company, Ltd.Inventors: Tomohiko KOHDA, Takahiro YOSHIDA, Shiomi ANDOU, Takayuki NAKAI, Kanshi ABE, Takeshi SHIMIZU, Ryo KASAHARA
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Patent number: 11724514Abstract: A liquid discharging head includes a nozzle plate having a plurality of nozzles from which liquid is discharged; a plurality of individual liquid chambers that are communicably connected to the plurality of nozzles, respectively; a common liquid chamber that supplies liquid to the plurality of individual liquid chambers; and a circulation common liquid chamber that leads to a plurality of circulation channels. A part of the common liquid chamber overlaps the circulation common liquid chamber from a direction in which liquid is discharged from the nozzles, and another part of the common liquid chamber overlaps the circulation common liquid chamber from a direction orthogonal to both the direction in which liquid is discharged from the nozzles and a direction in which the nozzles are aligned.Type: GrantFiled: April 26, 2022Date of Patent: August 15, 2023Assignee: Ricoh Company, Ltd.Inventors: Tomohiko Kohda, Takahiro Yoshida, Shiomi Andou, Takayuki Nakai, Kanshi Abe, Takeshi Shimizu, Ryo Kasahara
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Patent number: 11420447Abstract: A liquid discharging head includes a nozzle plate having a plurality of nozzles from which liquid is discharged; a plurality of individual liquid chambers that are communicably connected to the plurality of nozzles, respectively; a common liquid chamber that supplies liquid to the plurality of individual liquid chambers; and a circulation common liquid chamber that leads to a plurality of circulation channels. A part of the common liquid chamber overlaps the circulation common liquid chamber from a direction in which liquid is discharged from the nozzles, and another part of the common liquid chamber overlaps the circulation common liquid chamber from a direction orthogonal to both the direction in which liquid is discharged from the nozzles and a direction in which the nozzles are aligned.Type: GrantFiled: May 22, 2020Date of Patent: August 23, 2022Assignee: Ricoh Company, Ltd.Inventors: Tomohiko Kohda, Takahiro Yoshida, Shiomi Andou, Takayuki Nakai, Kanshi Abe, Takeshi Shimizu, Ryo Kasahara
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Publication number: 20220250392Abstract: A liquid discharging head includes a nozzle plate having a plurality of nozzles from which liquid is discharged; a plurality of individual liquid chambers that are communicably connected to the plurality of nozzles, respectively; a common liquid chamber that supplies liquid to the plurality of individual liquid chambers; and a circulation common liquid chamber that leads to a plurality of circulation channels. A part of the common liquid chamber overlaps the circulation common liquid chamber from a direction in which liquid is discharged from the nozzles, and another part of the common liquid chamber overlaps the circulation common liquid chamber from a direction orthogonal to both the direction in which liquid is discharged from the nozzles and a direction in which the nozzles are aligned.Type: ApplicationFiled: April 26, 2022Publication date: August 11, 2022Applicant: Ricoh Company, Ltd.Inventors: Tomohiko KOHDA, Takahiro YOSHIDA, Shiomi ANDOU, Takayuki NAKAI, Kanshi ABE, Takeshi SHIMIZU, Ryo KASAHARA
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Patent number: 11331930Abstract: A liquid discharging head includes a nozzle plate having a plurality of nozzles from which liquid is discharged; a plurality of individual liquid chambers that are communicably connected to the plurality of nozzles, respectively; a common liquid chamber that supplies liquid to the plurality of individual liquid chambers; and a circulation common liquid chamber that leads to a plurality of circulation channels. A part of the common liquid chamber overlaps the circulation common liquid chamber from a direction in which liquid is discharged from the nozzles, and another part of the common liquid chamber overlaps the circulation common liquid chamber from a direction orthogonal to both the direction in which liquid is discharged from the nozzles and a direction in which the nozzles are aligned.Type: GrantFiled: February 24, 2021Date of Patent: May 17, 2022Assignee: Ricoh Company, Ltd.Inventors: Tomohiko Kohda, Takahiro Yoshida, Shiomi Andou, Takayuki Nakai, Kanshi Abe, Takeshi Shimizu, Ryo Kasahara
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Patent number: 11135845Abstract: A liquid discharge head includes a plurality of nozzles to discharge liquid, a plurality of pressure chambers communicating with the nozzles, a plurality of individual flow paths communicating with the plurality of pressure chambers, and a common flow path communicating with the plurality of individual flow paths. Further, each individual flow path includes a first flow path portion and a second flow path portion each having a fluid resistance higher than a fluid resistance of a pressure chamber of the plurality of pressure chambers that communicates with the individual flow path, and a third flow path portion disposed between the first flow path portion and the second flow path portion, the third flow path portion having a fluid resistance lower than the fluid resistance of the first flow path portion and the third resistance of the second flow path portion.Type: GrantFiled: April 14, 2020Date of Patent: October 5, 2021Assignee: RICOH COMPANY, LTD.Inventors: Shiomi Andou, Takahiro Yoshida, Takayuki Nakai
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Patent number: 11077688Abstract: A liquid discharge head includes a plurality of pressure generating elements configured to generate pressure to discharge a liquid, a plurality of wirings configured to transmit a drive signal to the plurality of pressure generating elements, respectively, a plurality of integrated circuits configured to drive the plurality of pressure generating elements, respectively, the plurality of integrated circuits being provided on the plurality of wirings, respectively, and a heat sink configured to contact the plurality of integrated circuits to dissipate heat in the plurality of integrated circuits. The heat sink includes a first dissipation part that directly contacts one of the plurality of integrated circuits, and a second dissipating part that contacts another of the plurality of integrated circuits via one of the plurality of wirings.Type: GrantFiled: September 16, 2019Date of Patent: August 3, 2021Assignee: Ricoh Company, Ltd.Inventors: Masami Iwama, Shiomi Andou, Satoru Yoshida
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Publication number: 20210178776Abstract: A liquid discharging head includes a nozzle plate having a plurality of nozzles from which liquid is discharged; a plurality of individual liquid chambers that are communicably connected to the plurality of nozzles, respectively; a common liquid chamber that supplies liquid to the plurality of individual liquid chambers; and a circulation common liquid chamber that leads to a plurality of circulation channels. A part of the common liquid chamber overlaps the circulation common liquid chamber from a direction in which liquid is discharged from the nozzles, and another part of the common liquid chamber overlaps the circulation common liquid chamber from a direction orthogonal to both the direction in which liquid is discharged from the nozzles and a direction in which the nozzles are aligned.Type: ApplicationFiled: February 24, 2021Publication date: June 17, 2021Applicant: Ricoh Company, Ltd.Inventors: Tomohiko KOHDA, Takahiro YOSHIDA, Shiomi ANDOU, Takayuki NAKAI, Kanshi ABE, Takeshi SHIMIZU, Ryo KASAHARA
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Publication number: 20200331262Abstract: A liquid discharge head includes a plurality of nozzles to discharge liquid, a plurality of pressure chambers communicating with the nozzles, a plurality of individual flow paths communicating with the plurality of pressure chambers, and a common flow path communicating with the plurality of individual flow paths. Further, each individual flow path includes a first flow path portion and a second flow path portion each having a fluid resistance higher than a fluid resistance of a pressure chamber of the plurality of pressure chambers that communicates with the individual flow path, and a third flow path portion disposed between the first flow path portion and the second flow path portion, the third flow path portion having a fluid resistance lower than the fluid resistance of the first flow path portion and the third resistance of the second flow path portion.Type: ApplicationFiled: April 14, 2020Publication date: October 22, 2020Inventors: Shiomi ANDOU, Takahiro YOSHIDA, Takayuki NAKAI
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Publication number: 20200282740Abstract: A liquid discharging head includes a nozzle plate having a plurality of nozzles from which liquid is discharged; a plurality of individual liquid chambers that are communicably connected to the plurality of nozzles, respectively; a common liquid chamber that supplies liquid to the plurality of individual liquid chambers; and a circulation common liquid chamber that leads to a plurality of circulation channels. A part of the common liquid chamber overlaps the circulation common liquid chamber from a direction in which liquid is discharged from the nozzles, and another part of the common liquid chamber overlaps the circulation common liquid chamber from a direction orthogonal to both the direction in which liquid is discharged from the nozzles and a direction in which the nozzles are aligned.Type: ApplicationFiled: May 22, 2020Publication date: September 10, 2020Applicant: Ricoh Company, Ltd.Inventors: Tomohiko KOHDA, Takahiro YOSHIDA, Shiomi ANDOU, Takayuki NAKAI, Kanshi ABE, Takeshi SHIMIZU, Ryo KASAHARA
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Patent number: 10696057Abstract: A liquid discharging head includes a nozzle plate having a plurality of nozzles from which liquid is discharged; a plurality of individual liquid chambers that are communicably connected to the plurality of nozzles, respectively; a common liquid chamber that supplies liquid to the plurality of individual liquid chambers; and a circulation common liquid chamber that leads to a plurality of circulation channels. A part of the common liquid chamber overlaps the circulation common liquid chamber from a direction in which liquid is discharged from the nozzles, and another part of the common liquid chamber overlaps the circulation common liquid chamber from a direction orthogonal to both the direction in which liquid is discharged from the nozzles and a direction in which the nozzles are aligned.Type: GrantFiled: November 26, 2019Date of Patent: June 30, 2020Assignee: Ricoh Company, Ltd.Inventors: Tomohiko Kohda, Takahiro Yoshida, Shiomi Andou, Takayuki Nakai, Kanshi Abe, Takeshi Shimizu, Ryo Kasahara
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Patent number: 10668726Abstract: A liquid ejection head is provided. The liquid ejection head includes at least two nozzle lines configured to have a plurality of nozzles for ejecting liquid disposed in respective lines, a plurality of individual liquid chambers configured to be in communication with corresponding nozzles of the nozzle lines, and at least two circulation channels corresponding to the nozzle lines, configured to be in communication with the individual liquid chambers. The at least two circulation channels are in communication with each other through a bridging channel disposed in a direction intersecting with the nozzle line direction, and the bridging channel and the circulation channels are disposed at different positions in a thickness direction of a member which forms the bridging channel and the circulation channels.Type: GrantFiled: May 16, 2018Date of Patent: June 2, 2020Assignee: RICOH COMPANY, LTD.Inventors: Takahiro Yoshida, Tomohiko Kohda, Takeshi Shimizu, Kanshi Abe, Ryo Kasahara, Takayuki Nakai, Shiomi Andou
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Publication number: 20200094573Abstract: A liquid discharging head includes a nozzle plate having a plurality of nozzles from which liquid is discharged; a plurality of individual liquid chambers that are communicably connected to the plurality of nozzles, respectively; a common liquid chamber that supplies liquid to the plurality of individual liquid chambers; and a circulation common liquid chamber that leads to a plurality of circulation channels. A part of the common liquid chamber overlaps the circulation common liquid chamber from a direction in which liquid is discharged from the nozzles, and another part of the common liquid chamber overlaps the circulation common liquid chamber from a direction orthogonal to both the direction in which liquid is discharged from the nozzles and a direction in which the nozzles are aligned.Type: ApplicationFiled: November 26, 2019Publication date: March 26, 2020Applicant: Ricoh Company, Ltd.Inventors: Tomohiko KOHDA, Takahiro YOSHIDA, Shiomi ANDOU, Takayuki NAKAI, Kanshi ABE, Takeshi SHIMIZU, Ryo KASAHARA
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Publication number: 20200094595Abstract: A liquid discharge head includes a plurality of pressure generating elements configured to generate pressure to discharge a liquid, a plurality of wirings configured to transmit a drive signal to the plurality of pressure generating elements, respectively, a plurality of integrated circuits configured to drive the plurality of pressure generating elements, respectively, the plurality of integrated circuits being provided on the plurality of wirings, respectively, and a heat sink configured to contact the plurality of integrated circuits to dissipate heat in the plurality of integrated circuits. The heat sink includes a first dissipation part that directly contacts one of the plurality of integrated circuits, and a second dissipating part that contacts another of the plurality of integrated circuits via one of the plurality of wirings.Type: ApplicationFiled: September 16, 2019Publication date: March 26, 2020Inventors: Masami Iwama, Shiomi Andou, Satoru Yoshida
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Patent number: 10538101Abstract: A liquid discharging head includes: a nozzle plate having a plurality of nozzles from which liquid is discharged; a channel member including a plurality of individual liquid chambers that lead to the plurality of nozzles, respectively, and including a plurality of circulation channels that lead to the plurality of individual liquid chambers, respectively; and a common liquid chamber member for forming a common liquid chamber that supplies liquid to the plurality of individual liquid chambers and for forming a circulation common liquid chamber that leads to the plurality of circulation channels.Type: GrantFiled: November 15, 2018Date of Patent: January 21, 2020Assignee: Ricoh Company, Ltd.Inventors: Tomohiko Kohda, Takahiro Yoshida, Shiomi Andou, Takayuki Nakai, Kanshi Abe, Takeshi Shimizu, Ryo Kasahara
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Patent number: 10399355Abstract: A liquid discharge head includes a plurality of nozzles to discharge a liquid, a plurality of individual chambers communicating with the plurality of nozzles, a plurality of discharge channels communicating with the plurality of individual chambers, a plurality of supply-side common chambers connected to the plurality of individual chambers, and a plurality of discharge-side common chambers connected to the plurality of discharge channels. The plurality of discharge-side common chamber has a same fluid resistance.Type: GrantFiled: January 25, 2018Date of Patent: September 3, 2019Assignee: Ricoh Company, Ltd.Inventors: Takayuki Nakai, Toshimichi Odaka, Takakazu Kihira, Takahiro Yoshida, Shiomi Andou, Yukio Otome, Katsuya Ishii
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Publication number: 20190084313Abstract: A liquid discharging head includes: a nozzle plate having a plurality of nozzles from which liquid is discharged; a channel member including a plurality of individual liquid chambers that lead to the plurality of nozzles, respectively, and including a plurality of circulation channels that lead to the plurality of individual liquid chambers, respectively; and a common liquid chamber member for forming a common liquid chamber that supplies liquid to the plurality of individual liquid chambers and for forming a circulation common liquid chamber that leads to the plurality of circulation channels.Type: ApplicationFiled: November 15, 2018Publication date: March 21, 2019Applicant: Ricoh Company, Ltd.Inventors: Tomohiko KOHDA, Takahiro YOSHIDA, Shiomi ANDOU, Takayuki NAKAI, Kanshi ABE, Takeshi SHIMIZU, Ryo KASAHARA
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Patent number: 10179452Abstract: A liquid discharge head includes a plurality of nozzles from which liquid is discharged, a plurality of individual-liquid-chambers communicating with the plurality of nozzles, respectively, a plurality of individual-drainage-channels communicating with the plurality of individual-liquid-chambers, respectively, a drainage-side common-liquid-chamber communicating with each of the plurality of individual-drainage-channels, a filter having filter holes and disposed between the plurality of individual-drainage-channels and the drainage-side common-liquid-chamber, and an intermediate-drainage-channel disposed between the filter and the plurality of individual-drainage-channels. The intermediate-drainage-channel faces the filter and communicates with two or more of the plurality of individual-drainage-channels.Type: GrantFiled: December 18, 2017Date of Patent: January 15, 2019Assignee: Ricoh Company, Ltd.Inventors: Masami Iwama, Yukio Otome, Takahiro Yoshida, Takakazu Kihira, Takayuki Nakai, Shiomi Andou, Isamu Suzuki, Ryuji Yoshida, Kanshi Abe, Junichi Iwata, Katsuya Ishii, Toshimichi Odaka
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Patent number: 10160216Abstract: A droplet discharge head includes a plurality of discharge orifices, a plurality of pressure generation chambers, a supply liquid chamber, a plurality of supply channels, a circulation liquid chamber, and a plurality of circulation channels. The discharge orifices discharge droplets. The pressure generation chambers are communicated with the discharge orifices, to apply pressure to liquid in the pressure generation chambers. The supply liquid chamber stores liquid to be supplied to the pressure generation chambers. The supply channels are communicated with the pressure generation chambers. The circulation liquid chamber receives liquid collected from the pressure generation chambers. The circulation channels communicate the pressure generation chambers with the circulation liquid chamber.Type: GrantFiled: October 25, 2016Date of Patent: December 25, 2018Assignee: RICOH COMPANY, LTD.Inventors: Takayuki Nakai, Takahiro Yoshida, Shiomi Andou, Toshimichi Odaka, Kanshi Abe
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Patent number: 10160226Abstract: A liquid discharging head includes: a nozzle plate having a plurality of nozzles from which liquid is discharged; a channel member including a plurality of individual liquid chambers that lead to the plurality of nozzles, respectively, and including a plurality of circulation channels that lead to the plurality of individual liquid chambers, respectively; and a common liquid chamber member for forming a common liquid chamber that supplies liquid to the plurality of individual liquid chambers and for forming a circulation common liquid chamber that leads to the plurality of circulation channels.Type: GrantFiled: June 30, 2017Date of Patent: December 25, 2018Assignee: Ricoh Company, Ltd.Inventors: Tomohiko Kohda, Takahiro Yoshida, Shiomi Andou, Takayuki Nakai, Kanshi Abe, Takeshi Shimizu, Ryo Kasahara