Patents by Inventor Hiroshi Nishimura
Hiroshi Nishimura 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: 11724497Abstract: Printheads for a jetting apparatus. In one embodiment, a printhead comprises a plurality of flow-through jetting channels each configured to jet a print fluid out of a nozzle. The printhead further includes a supply manifold fluidly coupled to the flow-through jetting channels, a return manifold fluidly coupled to the flow-through jetting channels, and one or more bypass manifolds fluidly coupled between the supply manifold and the return manifold.Type: GrantFiled: May 10, 2021Date of Patent: August 15, 2023Assignee: Ricoh Company, Ltd.Inventor: Hiroshi Nishimura
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Publication number: 20230249460Abstract: Printheads and design of printheads. In one embodiment, a printhead comprises a plurality of jetting channels, and a manifold apparatus fluidly coupled to the jetting channels. For each jetting channel, the printhead includes a first fluid path between the jetting channel and the manifold apparatus, and a second fluid path between the jetting channel and the manifold apparatus. The jetting channel is configured to jet a print fluid via pressure waves generated in a pressure chamber of the jetting channel. Lengths of the first fluid path and the second fluid path are different by a threshold length so that an arrival time of the pressure waves at the manifold apparatus are different by a threshold time.Type: ApplicationFiled: February 10, 2022Publication date: August 10, 2023Applicant: Ricoh Company, Ltd.Inventors: Hiroshi Nishimura, Giang Vo, Cesar Hurtado
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Patent number: 11712888Abstract: Printheads and methods of operation. In one embodiment, a printhead includes a plurality of jetting channels comprising first jetting channels configured to jet a first print fluid and second jetting channels configured to jet a second print fluid, and a driver circuit communicatively coupled to actuators of the jetting channels. The driver circuit receives a drive waveform comprising first jetting pulses provisioned for the first print fluid and second jetting pulses provisioned for the second print fluid, and gating signals comprising a first active gating signal designated for jetting the first print fluid and a second active gating signal designated for jetting the second print fluid. The driver circuit selectively applies the first jetting pulses to actuators of the first jetting channels based on the first active gating signal, and selectively applies the second jetting pulses to actuators of the second jetting channels based on the second active gating signal.Type: GrantFiled: March 9, 2021Date of Patent: August 1, 2023Assignee: Ricoh Company, Ltd.Inventor: Hiroshi Nishimura
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Patent number: 11704019Abstract: According to one embodiment, a memory system includes a nonvolatile memory and a controller which controls the nonvolatile memory. The controller notifies to an outside an extensive signal which indicates a predetermined state of the nonvolatile memory or the controller.Type: GrantFiled: October 23, 2020Date of Patent: July 18, 2023Assignee: Kioxia CorporationInventors: Shinichi Kanno, Hiroshi Nishimura, Hideki Yoshida, Hiroshi Murayama
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Publication number: 20230151241Abstract: Provided is a coating material composition that does not use N-methyl-2-pyrrolidone and has the same performance as conventional ones. The coating material composition contains polytetrafluoroethylene, a polyamideimide resin, and a filler, and being substantially free of N-methyl-2-pyrrolidone, wherein the filler has a hardness of 7 to 12 on a new Mohs hardness scale and a primary particle size of 1 ?m or less, wherein the content of the filler is 10 to 30 parts by mass relative to 100 parts by mass of a solid content of the polyamideimide resin in the coating material components, wherein the coating material composition has a viscosity of 10,000 to 20,000 cps, and wherein a degree of dispersion of the coating material as measured according to JIS K5600 with a grind gauge is 5 ?m or less.Type: ApplicationFiled: January 6, 2023Publication date: May 18, 2023Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Hiroshi NISHIMURA, Yuu KADOWAKI, Yasukazu NAKATANI
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Publication number: 20230076210Abstract: According to one embodiment, a memory system includes a nonvolatile memory and a controller. The controller acquires, from a host, write data having the same first size as a data write unit of the nonvolatile memory and obtained by dividing write data associated with one write command having a first identifier indicating a first write destination block in a plurality of write destination blocks into a plurality of write data or combining write data associated with two or more write commands having the first identifier. The controller writes the acquired write data having the first size to the first write destination block by a first write operation.Type: ApplicationFiled: November 7, 2022Publication date: March 9, 2023Applicant: KIOXIA CORPORATIONInventors: Shinichi KANNO, Hideki YOSHIDA, Naoki ESAKA, Hiroshi NISHIMURA
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Patent number: 11571892Abstract: Printheads and manifolds within printheads. In one embodiment, a method comprises determining a resonant frequency of jetting channels for a printhead, and selecting a target length for a manifold fluidly coupled to the jetting channels such that resonant frequencies of the manifold differ from the resonant frequency of the jetting channels by a threshold amount.Type: GrantFiled: March 8, 2021Date of Patent: February 7, 2023Assignee: Ricoh Company, Ltd.Inventors: Hiroshi Nishimura, Giang Vo, Cesar Hurtado
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Patent number: 11543997Abstract: According to one embodiment, a memory system includes a nonvolatile memory and a controller. The controller acquires, from a host, write data having the same first size as a data write unit of the nonvolatile memory and obtained by dividing write data associated with one write command having a first identifier indicating a first write destination block in a plurality of write destination blocks into a plurality of write data or combining write data associated with two or more write commands having the first identifier. The controller writes the acquired write data having the first size to the first write destination block by a first write operation.Type: GrantFiled: August 19, 2021Date of Patent: January 3, 2023Assignee: Kioxia CorporationInventors: Shinichi Kanno, Hideki Yoshida, Naoki Esaka, Hiroshi Nishimura
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Publication number: 20220288925Abstract: Printheads and methods of operation. In one embodiment, a printhead includes a plurality of jetting channels comprising first jetting channels configured to jet a first print fluid and second jetting channels configured to jet a second print fluid, and a driver circuit communicatively coupled to actuators of the jetting channels. The driver circuit receives a drive waveform comprising first jetting pulses provisioned for the first print fluid and second jetting pulses provisioned for the second print fluid, and gating signals comprising a first active gating signal designated for jetting the first print fluid and a second active gating signal designated for jetting the second print fluid. The driver circuit selectively applies the first jetting pulses to actuators of the first jetting channels based on the first active gating signal, and selectively applies the second jetting pulses to actuators of the second jetting channels based on the second active gating signal.Type: ApplicationFiled: March 9, 2021Publication date: September 15, 2022Applicant: Ricoh Company, Ltd.Inventor: Hiroshi Nishimura
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Publication number: 20220288922Abstract: Printheads and methods of operation. In one embodiment, a printhead includes a plurality of jetting channels comprising first jetting channels configured to jet a first print fluid and second jetting channels configured to jet a second print fluid, and a driver circuit communicatively coupled to actuators of the jetting channels. The driver circuit receives a drive waveform comprising non-jetting pulses and jetting pulses, and gating signals comprising a first active gating signal designated for jetting the first print fluid, and a second active gating signal designated for jetting the second print fluid. The driver circuit selectively applies the non-jetting pulses and the jetting pulses to actuators of the first jetting channels based on the first active gating signal to jet the first print fluid, and selectively applies the jetting pulses to actuators of the second jetting channels based on the second active gating signal to jet the second print fluid.Type: ApplicationFiled: March 9, 2021Publication date: September 15, 2022Applicant: Ricoh Company, Ltd.Inventor: Hiroshi Nishimura
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Publication number: 20220281222Abstract: Printheads and manifolds within printheads. In one embodiment, a method comprises determining a resonant frequency of jetting channels for a printhead, and selecting a target length for a manifold fluidly coupled to the jetting channels such that resonant frequencies of the manifold differ from the resonant frequency of the jetting channels by a threshold amount.Type: ApplicationFiled: March 8, 2021Publication date: September 8, 2022Applicant: Ricoh Company, Ltd.Inventors: Hiroshi Nishimura, Giang Vo, Cesar Hurtado
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Patent number: 11376857Abstract: Printheads for a jetting apparatus. In one embodiment, a printhead comprises a plurality of jetting channels having nozzles on a bottom surface configured to jet a print fluid, and longitudinal sides disposed between the bottom surface and a top surface. The printhead also comprises Input/Output (I/O) ports disposed on one or more of the longitudinal sides, and configured to convey the print fluid into or out of the printhead. The printhead further includes one or more chain manifolds disposed between the I/O ports.Type: GrantFiled: March 17, 2021Date of Patent: July 5, 2022Assignee: Ricoh Company, Ltd.Inventor: Hiroshi Nishimura
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Patent number: 11331635Abstract: A minute bubble generator includes a flow path member including a flow path allowing a liquid to pass therethrough; and a colliding part provided in the flow path and generating minute bubbles in the liquid passing through the flow path by locally reducing a cross sectional area of the flow path. The colliding part is formed integrally with the flow path member and is provided closer to an upstream end or a downstream end relative to a lengthwise center of the flow path.Type: GrantFiled: June 11, 2019Date of Patent: May 17, 2022Assignee: Toshiba Lifestyle Products & Services CorporationInventors: Hironori Sasaki, Satoshi Nagai, Yasuhiro Komori, Tomonori Uchiyama, Hiroshi Nishimura
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Publication number: 20220017721Abstract: Provided are: a stabilizer composition that can not only impart excellent thermal stability, coloration resistance, thermal coloration resistance, and the like to a vinyl chloride resin, but also impart excellent transparency to a vinyl chloride resin when used in an application where transparency is required; a vinyl chloride resin composition containing the same; and a molded body thereof. The stabilizer composition contains 5 to 2,500 parts by mass of a component (B) with respect to 100 parts by mass of a component (A). The component (A) is at least one organic acid zinc salt, and the component (B) is at least one epoxy compound having a glycidyl ether group and/or a glycidyl ester group.Type: ApplicationFiled: February 3, 2020Publication date: January 20, 2022Applicant: ADEKA CORPORATIONInventors: Shota UNO, Yohei HARADA, Yuto ISHIZUKA, Kazumasa TANAKA, Hiroshi NISHIMURA
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Patent number: 11214067Abstract: A service media and method for cleaning printheads. In one embodiment, a method of cleaning includes inserting a service media beneath one or more printheads, inflating the service media so that an absorbent material of the service media contacts a nozzle surface of the printheads, and deflating the service media.Type: GrantFiled: February 20, 2020Date of Patent: January 4, 2022Assignee: Ricoh Company, Ltd.Inventor: Hiroshi Nishimura
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Publication number: 20210382648Abstract: According to one embodiment, a memory system includes a nonvolatile memory and a controller. The controller acquires, from a host, write data having the same first size as a data write unit of the nonvolatile memory and obtained by dividing write data associated with one write command having a first identifier indicating a first write destination block in a plurality of write destination blocks into a plurality of write data or combining write data associated with two or more write commands having the first identifier. The controller writes the acquired write data having the first size to the first write destination block by a first write operation.Type: ApplicationFiled: August 19, 2021Publication date: December 9, 2021Applicant: TOSHIBA MEMORY CORPORATIONInventors: Shinichi KANNO, Hideki YOSHIDA, Naoki ESAKA, Hiroshi NISHIMURA
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Publication number: 20210347964Abstract: A resin composition includes a resin or a resin precursor, and a nitrogen-containing aromatic heterocyclic compound. The nitrogen-containing aromatic heterocyclic compound has a structure represented by the following general formula (1), the following general formula (6) or the following general formula (7). The resin composition includes the nitrogen-containing aromatic heterocyclic compound in a range from 0.10 to 30% by mass relative to the resin or the resin precursor. In the general formula (1), A1 and A2 each represent a 6-membered nitrogen-containing aromatic heterocyclic ring together with a nitrogen atom, and the 6-membered nitrogen-containing aromatic heterocyclic ring optionally forms a fused ring; and L represents a single bond, or a linking group derived from an aromatic hydrocarbon ring, an aromatic heterocyclic ring, or an alkyl group.Type: ApplicationFiled: October 2, 2019Publication date: November 11, 2021Inventors: Tomomi SUGAI, Shinya OTSU, Hiroshi NISHIMURA, Kunio TANI
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Patent number: 11150835Abstract: According to one embodiment, a memory system includes a nonvolatile memory and a controller. The controller acquires, from a host, write data having the same first size as a data write unit of the nonvolatile memory and obtained by dividing write data associated with one write command having a first identifier indicating a first write destination block in a plurality of write destination blocks into a plurality of write data or combining write data associated with two or more write commands having the first identifier. The controller writes the acquired write data having the first size to the first write destination block by a first write operation.Type: GrantFiled: July 14, 2020Date of Patent: October 19, 2021Assignee: TOSHIBA MEMORY CORPORATIONInventors: Shinichi Kanno, Hideki Yoshida, Naoki Esaka, Hiroshi Nishimura
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Publication number: 20210260873Abstract: Printheads for a jetting apparatus. In one embodiment, a printhead comprises a plurality of flow-through jetting channels each configured to jet a print fluid out of a nozzle. The printhead further includes a supply manifold fluidly coupled to the flow-through jetting channels, a return manifold fluidly coupled to the flow-through jetting channels, and one or more bypass manifolds fluidly coupled between the supply manifold and the return manifold.Type: ApplicationFiled: May 10, 2021Publication date: August 26, 2021Applicant: Ricoh Company, Ltd.Inventor: Hiroshi Nishimura
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Publication number: 20210260877Abstract: A service media and method for cleaning printheads. In one embodiment, a method of cleaning includes inserting a service media beneath one or more printheads, inflating the service media so that an absorbent material of the service media contacts a nozzle surface of the printheads, and deflating the service media.Type: ApplicationFiled: February 20, 2020Publication date: August 26, 2021Applicant: Ricoh Company, Ltd.Inventor: Hiroshi Nishimura