Patents by Inventor Keisuke Nagai
Keisuke Nagai 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: 12240985Abstract: The purpose of the present invention is to provide an ink for ink-jet printers, the ink being able to be reduced in the content of an electroconductive agent and having low resistance. The ink for ink-jet printers of a charge control type according to the present invention, which is provided in order to overcome the problem, is characterized by comprising a resin, a pigment, an electroconductive agent, and a nonaqueous solvent, the electroconductive agent having a salt structure which generates an anion and a cation in the nonaqueous solvent, the anion having a trifluoromethylsulfonyl group and the cation being a quaternary ammonium cation or having an unsaturated heterocyclic structure.Type: GrantFiled: February 20, 2019Date of Patent: March 4, 2025Assignee: Hitachi Industrial Equipment Systems Co., Ltd.Inventors: Hiroshi Sasaki, Takuya Otowa, Masahiko Ogino, Keisuke Nagai, Tamaki Wada
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Publication number: 20200385594Abstract: The purpose of the present invention is to provide an ink for ink-jet printers, the ink being able to be reduced in the content of an electroconductive agent and having low resistance. The ink for ink-jet printers of a charge control type according to the present invention, which is provided in order to overcome the problem, is characterized by comprising a resin, a pigment, an electroconductive agent, and a nonaqueous solvent, the electroconductive agent having a salt structure which generates an anion and a cation in the nonaqueous solvent, the anion having a trifluoromethylsulfonyl group and the cation being a quaternary ammonium cation or having an unsaturated heterocyclic structure.Type: ApplicationFiled: February 20, 2019Publication date: December 10, 2020Inventors: Hiroshi SASAKI, Takuya OTOWA, Masahiko OGINO, Keisuke NAGAI, Tamaki WADA
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Patent number: 10843477Abstract: A makeup fluid is added to an ink liquid of an inkjet printer to reduce the viscosity of the ink liquid, the makeup fluid including a fluorescent color material in a solvent. An inkjet printer apparatus employing a makeup fluid is provided with a makeup fluid tank to which a light-emitting element and a light-receiving element are attached, and detects the presence or absence of the makeup fluid by irradiating ultraviolet light from the light-emitting element, causing visible light to be emitted from the fluorescent color material in the makeup fluid, and detecting the visible light with the light-receiving element.Type: GrantFiled: June 3, 2016Date of Patent: November 24, 2020Assignee: Hitachi Industrial Equipment Systems Co., Ltd.Inventors: Takuya Otowa, Masahiko Ogino, Hiroshi Sasaki, Takahiro Arima, Keisuke Nagai, Hiromichi Takeyama, Shengnan Hua
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Patent number: 10399343Abstract: In order to make it possible to inform as apparatus handler through a simple, means of precautions to take in handling ink of the correct ID number when an inputted ink ID number is correct, this inkjet recording apparatus is provided with a print head having; a nozzle part, an ink container that houses ink supplied to the nozzle part, information reading unit for reading information that distinguishes the type of ink accompanying an ink supply container that supplies ink to the ink container, a determination unit for determining from the read information whether the ink housed in the ink supply container is the correct ink, a storage unit for storing ink-related information in correlation with the ink-type-distinguishing information, a stored-information extraction unit for extracting from the storage unit the ink-related information corresponding to the ink-type-distinguishing information read by the information reading unit when the ink is determined to be correct by the determination unit, and a display uType: GrantFiled: August 5, 2016Date of Patent: September 3, 2019Assignee: Hitachi Industrial Equipment Systems Co., Ltd.Inventors: Ryosuke Suzuki, Manabu Kato, Masahiko Sakuraba, Keisuke Nagai
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Patent number: 10308019Abstract: The present invention addresses the problem of enabling a charge control-type inkjet printer to enable real-time control during an operation and to maintain optimal printing conditions while operating. This charge control-type inkjet printer is provided with: a printing head including a nozzle unit for discharging ink; a pressure reduction valve for adjusting the pressure of the ink to be supplied to the nozzle unit of the printing head; and an ink container for accommodating the ink to be supplied to the nozzle unit of the printing head, wherein an imaging unit is further provided which images an image of ink that is discharged from the nozzle unit and is in a particulate state.Type: GrantFiled: September 26, 2016Date of Patent: June 4, 2019Assignee: Hitachi Industrial Equipment Systems Co., Ltd.Inventors: Hiromichi Takeyama, Masahiko Ogino, Keisuke Nagai, Takashi Sato
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Publication number: 20180304639Abstract: A makeup fluid is added to an ink liquid of an inkjet printer to reduce the viscosity of the ink liquid, the makeup fluid including a fluorescent color material in a solvent. An inkjet printer apparatus employing a makeup fluid is provided with a makeup fluid tank to which a light-emitting element and a light-receiving element are attached, and detects the presence or absence of the makeup fluid by irradiating ultraviolet light from the light-emitting element, causing visible light to be emitted from the fluorescent color material in the makeup fluid, and detecting the visible light with the light-receiving element.Type: ApplicationFiled: June 3, 2016Publication date: October 25, 2018Inventors: Takuya OTOWA, Masahiko OGINO, Hiroshi SASAKI, Takahiro ARIMA, Keisuke NAGAI, Hiromichi TAKEYAMA, Shengnan HUA
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Publication number: 20180291221Abstract: In an ink for an inkjet printer of an electrostatic charging control type, the ink including a resin, a pigment, a conductive agent, and a solvent, for the resin, one that contains carboxyl groups or hydroxyl groups is used. Thus, an ink print applied to a material including a large quantity of a plasticizer can be made stable over a prolonged period of time without subjecting the ink print to an ultraviolet irradiation or other special treatments.Type: ApplicationFiled: June 14, 2018Publication date: October 11, 2018Inventors: Hiroshi SASAKI, Masahiko OGINO, Takuya OTOWA, Tomoko MAEJIMA, Keisuke NAGAI
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Publication number: 20180281401Abstract: The present invention addresses the problem of enabling a charge control-type inkjet printer to enable real-time control during an operation and to maintain optimal printing conditions while operating. This charge control-type inkjet printer is provided with: a printing head including a nozzle unit for discharging ink; a pressure reduction valve for adjusting the pressure of the ink to be supplied to the nozzle unit of the printing head; and an ink container for accommodating the ink to be supplied to the nozzle unit of the printing head, wherein an imaging unit is further provided which images an image of ink that is discharged from the nozzle unit and is in a particulate state.Type: ApplicationFiled: September 26, 2016Publication date: October 4, 2018Inventors: Hiromichi TAKEYAMA, Masahiko OGINO, Keisuke NAGAI, Takashi SATO
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Publication number: 20180250941Abstract: In order to make it possible to inform as apparatus handler through a simple, means of precautions to take in handling ink of the correct ID number when an inputted ink ID number is correct, this inkjet recording apparatus is provided with a print head having; a nozzle part, an ink container that houses ink supplied to the nozzle part, information reading unit for reading information that distinguishes the type of ink accompanying an ink supply container that supplies ink to the ink container, a determination unit for determining from the read information whether the ink housed in the ink supply container is the correct ink, a storage unit for storing ink-related information in correlation with the ink-type-distinguishing information, a stored-information extraction unit for extracting from the storage unit the ink-related information corresponding to the ink-type-distinguishing information read by the information reading unit when the ink is determined to be correct by the determination unit, and a display uType: ApplicationFiled: August 5, 2016Publication date: September 6, 2018Inventors: Ryosuke SUZUKI, Manabu KATO, Masahiko SAKURABA, Keisuke NAGAI
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Publication number: 20170355253Abstract: A sealing structure for use on an automobile having a weather strip and an interior member wherein the weather strip includes an installation base member having an inner-cabin side wall, an outer-cabin side wall, a connecting wall and holding lips; and a seal member. The installation base member couples to a flange vertically formed along a peripheral edge of an opening corresponding to a door. The seal member is formed on the outer-cabin side wall and makes elastic contact with a door glass. The interior member is provided on an inner-cabin side of the inner-cabin side wall. An end of the interior member extends toward the connecting wall. A projection is formed on an outer circumference of a connecting part between the outer-cabin side wall and the connecting wall. The projection extends in an internal circumferential direction and covers the end of the interior member from an outer-cabin side.Type: ApplicationFiled: June 8, 2017Publication date: December 14, 2017Inventors: Hirofumi OGAWA, Satoshi MAESAKI, Kayo YONEDA, Keisuke NAGAI, Takuya TANI
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Patent number: 9541564Abstract: The present invention provides a reagent for assaying D-dimer which includes carriers sensitized to first and second monoclonal antibodies which react with D-dimer, but have different reactivity to D-dimer in which the first monoclonal antibody reacts with high- and low-molecular fractions of D-dimer, the second monoclonal antibody reacts with the high-molecular fraction, but reactivity of the second monoclonal antibody with the low-molecular fraction is different from that of the first monoclonal antibody and a kit of reagent for assaying D-dimer.Type: GrantFiled: April 18, 2016Date of Patent: January 10, 2017Assignee: SYSMEX CORPORATIONInventors: Keisuke Nagai, Kazuaki Yamashita, Susumu Hoshiko, Takeshi Suzuki
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Publication number: 20160231339Abstract: The present invention provides a reagent for assaying D-dimer which includes carriers sensitized to first and second monoclonal antibodies which react with D-dimer, but have different reactivity to D-dimer in which the first monoclonal antibody reacts with high- and low-molecular fractions of D-dimer, the second monoclonal antibody reacts with the high-molecular fraction, but reactivity of the second monoclonal antibody with the low-molecular fraction is different from that of the first monoclonal antibody and a kit of reagent for assaying D-dimer.Type: ApplicationFiled: April 18, 2016Publication date: August 11, 2016Applicant: SYSMEX CORPORATIONInventors: Keisuke NAGAI, Kazuaki YAMASHITA, Susumu HOSHIKO, Takeshi SUZUKI
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Patent number: 9347957Abstract: The present invention provides a reagent for assaying D-dimer which includes carriers sensitized to first and second monoclonal antibodies which react with D-dimer, but have different reactivity to D-dimer in which the first monoclonal antibody reacts with high- and low-molecular fractions of D-dimer, the second monoclonal antibody reacts with the high-molecular fraction, but reactivity of the second monoclonal antibody with the low-molecular fraction is different from that of the first monoclonal antibody and a kit of reagent for assaying D-dimer.Type: GrantFiled: July 25, 2011Date of Patent: May 24, 2016Assignee: SYSMEX CORPORATIONInventors: Keisuke Nagai, Kazuaki Yamashita, Susumu Hoshiko, Takeshi Suzuki
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Publication number: 20160083600Abstract: In an ink for an inkjet printer of an electrostatic charging control type, the ink including a resin, a pigment, a conductive agent, and a solvent, for the resin, one that contains carboxyl groups or hydroxyl groups is used. Thus, an ink print applied to a material including a large quantity of a plasticizer can be made stable over a prolonged period of time without subjecting the ink print to an ultraviolet irradiation or other special treatments.Type: ApplicationFiled: February 4, 2014Publication date: March 24, 2016Applicant: Hitachi Industrial Equipment Systems Co., Ltd.Inventors: Hiroshi SASAKI, Masahiko OGINO, Takuya OTOWA, Tomoko MAEJIMA, Keisuke NAGAI
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Publication number: 20120028370Abstract: The present invention provides a reagent for assaying D-dimer which includes carriers sensitized to first and second monoclonal antibodies which react with D-dimer, but have different reactivity to D-dimer in which the first monoclonal antibody reacts with high- and low-molecular fractions of D-dimer, the second monoclonal antibody reacts with the high-molecular fraction, but reactivity of the second monoclonal antibody with the low-molecular fraction is different from that of the first monoclonal antibody and a kit of reagent for assaying D-dimer.Type: ApplicationFiled: July 25, 2011Publication date: February 2, 2012Applicant: SYSMEX CORPORATIONInventors: Keisuke NAGAI, Kazuaki YAMASHITA, Susumu HOSHIKO, Takeshi SUZUKI
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Patent number: 6679079Abstract: An air conditioning system for a vehicle has a plurality of heat enhancing means including at least a hot gas heater cycle for heating air blown into a passenger compartment by directly introducing a discharged gas refrigerant from a compressor into an interior heat exchanger. Additionally, an electric heater is provided as another passenger compartment heating enhancing means. When heat requirements are high (outside air temperature is low), both the hot gas heater cycle and the electric heater are activated, and when the heat requirements decrease, the hot gas heater cycle is deactivated first, and then the electric heater is deactivated. Therefore, the adverse effects of a vehicle compartment temperature that the driver is sensing can be avoided. Additionally, controlling vehicle window fogging associated with an operation of the hot gas heater cycle is possible.Type: GrantFiled: September 10, 2002Date of Patent: January 20, 2004Assignee: Denso CorporationInventors: Keisuke Nagai, Yoshiaki Takano
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Patent number: 6662579Abstract: In a vehicle air conditioner, a refrigerant cycle system is constructed to switch a cooling refrigerant cycle where an interior heat exchanger is used as an evaporator, and a hot gas heater cycle where the interior heat exchanger is used as a radiator. Further, it is determined whether the interior heat exchanger has a quantity of retained water in a heating mode due to the hot gas heater cycle. When it is determined that the quantity of retained water is in the interior heat exchanger in the heating mode, operation of a compressor of the refrigerant cycle system is intermittently controlled so that temperature of air blown from the interior heat exchanger becomes lower than temperature of a vehicle windshield.Type: GrantFiled: September 12, 2002Date of Patent: December 16, 2003Assignee: Denso CorporationInventors: Yoshiaki Takano, Takahisa Suzuki, Satoshi Izawa, Keisuke Nagai, Shun Kurata
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Publication number: 20030046943Abstract: In a vehicle air conditioner, a refrigerant cycle system is constructed to switch a cooling refrigerant cycle where an interior heat exchanger is used as an evaporator, and a hot gas heater cycle where the interior heat exchanger is used as a radiator. Further, it is determined whether the interior heat exchanger has a quantity of retained water in a heating mode due to the hot gas heater cycle. When it is determined that the quantity of retained water is in the interior heat exchanger in the heating mode, operation of a compressor of the refrigerant cycle system is intermittently controlled so that temperature of air blown from the interior heat exchanger becomes lower than temperature of a vehicle windshield.Type: ApplicationFiled: September 12, 2002Publication date: March 13, 2003Inventors: Yoshiaki Takano, Takahisa Suzuki, Satoshi Izawa, Keisuke Nagai, Shun Kurata
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Publication number: 20030046946Abstract: An air conditioning system for a vehicle has a plurality of heat enhancing means including at least a hot gas heater cycle for heating air blown into a passenger compartment by directly introducing a discharged gas refrigerant from a compressor into an interior heat exchanger. Additionally, an electric heater is provided as another passenger compartment heating enhancing means. When heat requirements are high (outside air temperature is low), both the hot gas heater cycle and the electric heater are activated, and when the heat requirements decrease, the hot gas heater cycle is deactivated first, and then the electric heater is deactivated. Therefore, the adverse effects of a vehicle compartment temperature that the driver is sensing can be avoided. Additionally, controlling vehicle window fogging associated with an operation of the hot gas heater cycle is possible.Type: ApplicationFiled: September 10, 2002Publication date: March 13, 2003Inventors: Keisuke Nagai, Yoshiaki Takano
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Patent number: 6477858Abstract: The refrigerant cycle apparatus comprises a communication pipe 32 which is an upper refrigerant flow-in means allowing the refrigerant which has passed through a condenser 2 to flow into the upper part of a liquid receiver 31, and a communication hole 33 which is a lower refrigerant flow-in means allowing the refrigerant which has passed through the condenser 2 to flow into the lower part of the liquid receiver 31, and the flow rate (Gr1) of refrigerant flowing into the upper part of the liquid receiver 31 from the communication pipe 32 is set at a value between 30 kg/h and 110 kg/h. As a result of this, preventing heat damage due to the heat given to the liquid receiver from the outside and securing the good bubble disappearing characteristic of the liquid refrigerant flowing out from the liquid receiver are mutually compatible, and thereby an improved refrigerant filling characteristic may be obtained.Type: GrantFiled: November 19, 2001Date of Patent: November 12, 2002Assignee: Denso CorporationInventors: Tetsuji Nobuta, Takahisa Suzuki, Keisuke Nagai