Patents by Inventor Junichi Takashima
Junichi Takashima 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: 20240107676Abstract: A circuit module comprises a substrate module, an electronic component, and a first conductive joining member. The substrate module includes a circuit substrate having an upper main surface and a lower main surface, an insulating member covering the upper main surface of the circuit substrate, an insulating member covering the upper main surface of the circuit substrate, and a first metal pin that passes through the insulating member parallel to a vertical axis and is electrically connected to the circuit substrate. The first metal pin has a first exposed portion. The first exposed portion is exposed from the insulating member to face a right direction. A first outer electrode has a left projecting portion projecting in a left direction from the left surface. A first conductive joining member joins the first exposed portion and the left projecting portion to each other.Type: ApplicationFiled: September 18, 2023Publication date: March 28, 2024Applicant: Murata Manufacturing Co., Ltd.Inventors: Tomohiko SUGIYAMA, Junichi TAKASHIMA, Takuya NAKAGAWA, Mayu SUZUKI, Daisuke NAKASHIMA
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Patent number: 10955764Abstract: A toner which is less likely to cause toner leakage and which is less likely to cause aggregation after being left to stand under a high temperature condition. A toner for developing electrostatic images, comprising colored resin particles comprising a binder resin and a colorant, and an external additive, wherein a conditioned bulk density obtained by a powder flowability analyzing device is from 0.525 g/mL to 0.565 g/mL.Type: GrantFiled: September 20, 2017Date of Patent: March 23, 2021Assignee: ZEON CORPORATIONInventors: Kojiro Akazaki, Junichi Takashima
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Patent number: 10386739Abstract: The present invention is to provide a toner production method configured to prevent scale formation, be resistant to pipe clogging, and realize stable and efficient toner production, even in the case of long-term continuous production. Disclosed is a toner production method comprising: a dispersing step for obtaining a colorant dispersion by, in a stirring tank, (a) dispersing or dissolving a colorant and a charge control agent in a polymerizable monomer, or (b) dispersing or dissolving a binder resin, a colorant and a charge control agent in an organic solvent, and a droplets forming step by suspending the colorant dispersion in an aqueous dispersion medium, wherein, in the dispersing step, the binder resin, colorant or charge control agent is added to the polymerizable monomer or organic solvent in the stirring tank, from a hopper, through a pipe heated by a heating device.Type: GrantFiled: April 4, 2018Date of Patent: August 20, 2019Assignee: ZEON CORPORATIONInventors: Ryo Tsumura, Junichi Takashima, Fuminari Oyama
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Publication number: 20190227450Abstract: A toner which is less likely to cause toner leakage and which is less likely to cause aggregation after being left to stand under a high temperature condition. A toner for developing electrostatic images, comprising colored resin particles comprising a binder resin and a colorant, and an external additive, wherein a conditioned bulk density obtained by a powder flowability analyzing device is from 0.525 g/mL to 0.565 g/mL.Type: ApplicationFiled: September 20, 2017Publication date: July 25, 2019Applicant: ZEON CORPORATIONInventors: Kojiro Akazaki, Junichi Takashima
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Publication number: 20180292764Abstract: The present invention is to provide a toner production method configured to prevent scale formation, be resistant to pipe clogging, and realize stable and efficient toner production, even in the case of long-term continuous production. Disclosed is a toner production method comprising: a dispersing step for obtaining a colorant dispersion by, in a stirring tank, (a) dispersing or dissolving a colorant and a charge control agent in a polymerizable monomer, or (b) dispersing or dissolving a binder resin, a colorant and a charge control agent in an organic solvent, and a droplets forming step by suspending the colorant dispersion in an aqueous dispersion medium, wherein, in the dispersing step, the binder resin, colorant or charge control agent is added to the polymerizable monomer or organic solvent in the stirring tank, from a hopper, through a pipe heated by a heating device.Type: ApplicationFiled: April 4, 2018Publication date: October 11, 2018Applicant: ZEON CORPORATIONInventors: Ryo Tsumura, Junichi Takashima, Fuminari Oyama
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Patent number: 7709176Abstract: A method for producing a polymerized toner comprising a step of polymerizing a polymerizable monomer composition in an aqueous dispersion medium in the presence of a polymerization initiator to obtain a dispersion liquid of colored polymer particles and a stripping step of injecting a gas comprised of air or an inert gas into the dispersion liquid of the colored polymer particles while stirring the dispersion liquid in an evaporator and the flow rate of the gas injected per weight of the colored polymer particles being 0.05 to 4 L/(hr·kg), the pressure of the vapor phase of the evaporator being 5 to 80 kPa.Type: GrantFiled: August 29, 2006Date of Patent: May 4, 2010Assignee: Zeon CorporationInventors: Junichi Takashima, Takashi Iga, Keita Sensui
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Publication number: 20070218397Abstract: A production process of a polymerized toner, in which a corrosion-resistant metal container, the surface roughness Ry of an inner wall of which is at most 3 ?m, is used as a polymerization container, and when an aqueous liquid dispersion is heated in the polymerization container to conduct polymerization, the temperature of the aqueous liquid dispersion is raised up to a temperature 5° C. lower than a target polymerization temperature at a heating rate of 20 to 60° C./hr and raised up to the target polymerization temperature from the temperature 5° C. lower than the target polymerization temperature at a heating rate of 5 to 30° C./hr, and after the temperature of the aqueous liquid dispersion reaches the target polymerization temperature, the polymerization is conducted while controlling the temperature of the aqueous liquid dispersion so as to fall within a range of (the target polymerization temperature ±3° C.).Type: ApplicationFiled: March 30, 2005Publication date: September 20, 2007Applicant: ZEON CORPORATIONInventors: Junichi Takashima, Kazuhiro Sato, Yoshihiro Makuta
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Publication number: 20070048645Abstract: A method for producing a polymerized toner comprising a step of polymerizing a polymerizable monomer composition in an aqueous dispersion medium in the presence of a polymerization initiator to obtain a dispersion liquid of colored polymer particles and a stripping step of injecting a gas comprised of air or an inert gas into the dispersion liquid of the colored polymer particles while stirring the dispersion liquid in an evaporator and the flow rate of the gas injected per weight of the colored polymer particles being 0.05 to 4 L/(hr·kg), the pressure of the vapor phase of the evaporator being 5 to 80 kPa.Type: ApplicationFiled: August 29, 2006Publication date: March 1, 2007Applicant: ZEON CORPORATIONInventors: Junichi Takashima, Takashi Iga, Keita Sensui