Patents by Inventor Takashi Kase
Takashi Kase 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: 11774873Abstract: An image forming apparatus executes processing for calculating a complex number of a discharge current waveform which is a discharge current component of a current waveform in discharge based on a first complex number at an analyzing frequency near a charging frequency of a current waveform in non-discharge, a second complex number at the analyzing frequency of the current waveform in non-discharge, a third complex number at an analyzing frequency of the current waveform in discharge, and a fourth complex number at the analyzing frequency of the current waveform in discharge, and then for determining an AC voltage value of a charging voltage during image formation based on a calculation result of the complex number of the discharge current waveform. The controller controls a power supply portion to apply, to the charging member, the charging voltage including an AC voltage component with the determined value.Type: GrantFiled: April 29, 2022Date of Patent: October 3, 2023Assignee: Canon Kabushiki KaishaInventors: Takashi Kase, Ryosuke Imaizumi
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Publication number: 20220390877Abstract: An image forming apparatus executes processing for calculating a complex number of a discharge current waveform which is a discharge current component of a current waveform in discharge based on a first complex number at an analyzing frequency near a charging frequency of a current waveform in non-discharge, a second complex number at the analyzing frequency of the current waveform in non-discharge, a third complex number at an analyzing frequency of the current waveform in discharge, and a fourth complex number at the analyzing frequency of the current waveform in discharge, and then for determining an AC voltage value of a charging voltage during image formation based on a calculation result of the complex number of the discharge current waveform. The controller controls a power supply portion to apply, to the charging member, the charging voltage including an AC voltage component with the determined value.Type: ApplicationFiled: April 29, 2022Publication date: December 8, 2022Inventors: Takashi Kase, Ryosuke Imaizumi
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Publication number: 20220319295Abstract: An area management apparatus comprises: an entering/leaving management part that manages person(s) who enters/leaves a predetermined area and item(s) that has/have been introduced into the predetermined area by the person(s) in an associated manner, a determination part that determines whether it is required or not to remove an item introduced into the predetermined area when the item is brought into an unattended state, and a request part that requests at least a person associated with the item being in the unattended state to remove the item in a case where it is determined that the item is required to be removed.Type: ApplicationFiled: May 20, 2020Publication date: October 6, 2022Applicant: NEC CorporationInventor: Takashi KASE
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Patent number: 11052609Abstract: A molding system to manufacture a three-dimensional object corresponding to a three-dimensional model. The molding apparatus includes a slice data generation unit to generate slice data from three-dimensional shape data of the three-dimensional model, and a lamination unit to laminate a layer of a molding material on the basis of the slice data. The slice data generation unit analyzes data, and, if a region in which a layer of a second molding material different from a first molding material is to be laminated on a layer of the first molding material and in which it is difficult to laminate the layers is extracted, modifies the data of a region of at least one of an ith layer and an (i+1)th layer to data in which a portion in which the first molding material is disposed and a portion in which the second molding material is disposed.Type: GrantFiled: December 16, 2016Date of Patent: July 6, 2021Assignee: Canon Kabushiki KaishaInventors: Hirokazu Usami, Tatsuya Tada, Kenji Karashima, Genya Anan, Takashi Kase, Satoru Yamanaka, Yuji Wakabayashi
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Patent number: 10859935Abstract: A toner includes toner particle containing at least a strontium titanate particle on the surface of the toner particle, and the toner is a water-washed toner from which strontium titanate particle desorbable by water washing are removed by water washing. The water-washed toner contains the strontium titanate particle having a number average particle diameter of primary particle (D1) of 10 nm or more and 150 nm or less, and when the distribution of an Sr element in the water-washed toner in the depth direction is determined, (i) the Sr element abundance on the outermost surface x satisfying 0.00<x?0.80, and (ii) the difference between x and xp “xp?x” satisfying 0.00<xp?x?0.95, where xp is the maximum peak value (atomic %) of the Sr element abundance in the region from the outermost surface to 50 nm.Type: GrantFiled: August 26, 2019Date of Patent: December 8, 2020Assignee: CANON KABUSHIKI KAISHAInventors: Takeshi Ohtsu, Tadashi Fukuda, Mikihiro Akasaki, Akinori Miyamoto, Kota Mori, Masami Hano, Takashi Kase, Daisuke Tsujimoto, Ryuichiro Matsuo, Kazuto Hosoi, Yoshihiro Ogawa
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Patent number: 10838316Abstract: An image forming apparatus in which occurrence of an image failure in association with contamination caused by an external additive, such as silica, adhering to a charging unit is suppressed. The image forming apparatus is configured to charge an image bearing member through use of the charging unit, and uses toner having, on a surface thereof, strontium titanate particles and silica particles having predetermined physical properties.Type: GrantFiled: August 23, 2019Date of Patent: November 17, 2020Assignee: CANON KABUSHIKI KAISHAInventors: Akinori Miyamoto, Kota Mori, Masami Hano, Takashi Kase, Tadashi Fukuda, Mikihiro Akasaki, Takeshi Ohtsu
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Publication number: 20200073267Abstract: An image forming apparatus in which occurrence of an image failure in association with contamination caused by an external additive, such as silica, adhering to a charging unit is suppressed. The image forming apparatus is configured to charge an image bearing member through use of the charging unit, and uses toner having, on a surface thereof, strontium titanate particles and silica particles having predetermined physical properties.Type: ApplicationFiled: August 23, 2019Publication date: March 5, 2020Inventors: Akinori Miyamoto, Kota Mori, Masami Hano, Takashi Kase, Tadashi Fukuda, Mikihiro Akasaki, Takeshi Ohtsu
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Publication number: 20200073266Abstract: A toner includes toner particle containing at least a strontium titanate particle on the surface of the toner particle, and the toner is a water-washed toner from which strontium titanate particle desorbable by water washing are removed by water washing. The water-washed toner contains the strontium titanate particle having a number average particle diameter of primary particle (D1) of 10 nm or more and 150 nm or less, and when the distribution of an Sr element in the water-washed toner in the depth direction is determined, (i) the Sr element abundance on the outermost surface x satisfying 0.00<x?0.80, and (ii) the difference between x and xp “xp?x” satisfying 0.00<xp?x?0.95, where xp is the maximum peak value (atomic %) of the Sr element abundance in the region from the outermost surface to 50 nm.Type: ApplicationFiled: August 26, 2019Publication date: March 5, 2020Inventors: Takeshi Ohtsu, Tadashi Fukuda, Mikihiro Akasaki, Akinori Miyamoto, Kota Mori, Masami Hano, Takashi Kase, Daisuke Tsujimoto, Ryuichiro Matsuo, Kazuto Hosoi, Yoshihiro Ogawa
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Patent number: 10357956Abstract: A shaping apparatus includes a storage section that stores in advance a first relationship between a temperature of a shaping material and a heating time at a time at which oxidation of the shaping material starts as the shaping material is heated; and a control section that estimates a timing at which the oxidation of a material layer starts, based on an acquisition result from a temperature acquisition section, a measurement result from a time measurement section, and the first relationship stored in the storage section when the material layer on a conveyance body is preheated by a preheating section, and reduces a front surface temperature of the material layer on the conveyance body before the oxidation of the material layer starts.Type: GrantFiled: February 8, 2017Date of Patent: July 23, 2019Assignee: Canon Kabushiki KaishaInventors: Hirokazu Usami, Tatsuya Tada, Kenji Karashima, Genya Anan, Takashi Kase, Satoru Yamanaka, Yuji Wakabayashi
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Publication number: 20190056688Abstract: Occurrence of layering defects is suppressed in a layering forming method where material layers on a conveyance member are heated and layered. A forming apparatus 1 configured to sequentially layer a plurality of material layers and form a three-dimensional object includes a stage having a forming face on which the material layers are layered, a conveyance member configured to support and convey the material layers to a layering position facing the forming face, and a heating member configured to nip the material layers between itself and the forming face of the stage at the layering position, and pressurize and heat the material layer. When a heating region of the heating member is perpendicularly projected onto a plane where a supporting face at which the conveyance member supports the material layer exists, a projection plane of the heating region has extending regions that extend further to the outer side from both edges of the supporting face, on both edges of the projection plane of the heating region.Type: ApplicationFiled: October 23, 2018Publication date: February 21, 2019Inventors: Yuji Wakabayashi, Tatsuya Tada, Hirokazu Usami, Kenji Karashima, Genya Anan, Takashi Kase, Satoru Yamanaka
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Publication number: 20190001578Abstract: A molding system to manufacture a three-dimensional object corresponding to a three-dimensional model. The molding apparatus includes a slice data generation unit to generate slice data from three-dimensional shape data of the three-dimensional model, and a lamination unit to laminate a layer of a molding material on the basis of the slice data. The slice data generation unit analyzes data, and, if a region in which a layer of a second molding material different from a first molding material is to be laminated on a layer of the first molding material and in which it is difficult to laminate the layers is extracted, modifies the data of a region of at least one of an ith layer and an (i+1)th layer to data in which a portion in which the first molding material is disposed and a portion in which the second molding material is disposed.Type: ApplicationFiled: December 16, 2016Publication date: January 3, 2019Inventors: Hirokazu Usami, Tatsuya Tada, Kenji Karashima, Genya Anan, Takashi Kase, Satoru Yamanaka, Yuji Wakabayashi
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Patent number: 10067444Abstract: Provided is a remanufacturing method of a developer accommodating unit including a flexible container provided with an opening and configured to accommodate developer, and a frame member configured to accommodate the flexible container. The remanufacturing method includes refilling the developer into the flexible container.Type: GrantFiled: January 18, 2018Date of Patent: September 4, 2018Assignee: Canon Kabushiki KaishaInventors: Yuta Isobe, Takashi Kase, Kouki Yano, Takahiro Ikeda, Yusuke Usui, Shinjiro Toba, Masaaki Sato, Yosuke Kashiide, Satoshi Nishiya, Tatsuya Suzuki, Kohei Matsuda
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Patent number: 10031442Abstract: Provided is a remanufacturing method of a developer accommodating unit including a flexible container provided with an opening and configured to accommodate developer, and a frame member configured to accommodate the flexible container. The remanufacturing method includes refilling the developer into the flexible container.Type: GrantFiled: January 18, 2018Date of Patent: July 24, 2018Assignee: Canon Kabushiki KaishaInventors: Yuta Isobe, Takashi Kase, Kouki Yano, Takahiro Ikeda, Yusuke Usui, Shinjiro Toba, Masaaki Sato, Yosuke Kashiide, Satoshi Nishiya, Tatsuya Suzuki, Kohei Matsuda
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Publication number: 20180143569Abstract: Provided is a remanufacturing method of a developer accommodating unit including a flexible container provided with an opening and configured to accommodate developer, and a frame member configured to accommodate the flexible container. The remanufacturing method includes refilling the developer into the flexible container.Type: ApplicationFiled: January 18, 2018Publication date: May 24, 2018Inventors: Yuta Isobe, Takashi Kase, Kouki Yano, Takahiro Ikeda, Yusuke Usui, Shinjiro Toba, Masaaki Sato, Yosuke Kashiide, Satoshi Nishiya, Tatsuya Suzuki, Kohei Matsuda
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Patent number: 9910387Abstract: Provided is a remanufacturing method of a developer accommodating unit including a flexible container provided with an opening and configured to accommodate developer, and a frame member configured to accommodate the flexible container. The remanufacturing method includes refilling the developer into the flexible container.Type: GrantFiled: November 22, 2016Date of Patent: March 6, 2018Assignee: Canon Kabushiki KaishaInventors: Yuta Isobe, Takashi Kase, Kouki Yano, Takahiro Ikeda, Yusuke Usui, Shinjiro Toba, Masaaki Sato, Yosuke Kashiide, Satoshi Nishiya, Tatsuya Suzuki, Kohei Matsuda
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Publication number: 20170232673Abstract: A shaping apparatus includes a storage section that stores in advance a first relationship between a temperature of a shaping material and a heating time at a time at which oxidation of the shaping material starts as the shaping material is heated; and a control section that estimates a timing at which the oxidation of a material layer starts, based on an acquisition result from a temperature acquisition section, a measurement result from a time measurement section, and the first relationship stored in the storage section when the material layer on a conveyance body is preheated by a preheating section, and reduces a front surface temperature of the material layer on the conveyance body before the oxidation of the material layer starts.Type: ApplicationFiled: February 8, 2017Publication date: August 17, 2017Inventors: Hirokazu Usami, Tatsuya Tada, Kenji Karashima, Genya Anan, Takashi Kase, Satoru Yamanaka, Yuji Wakabayashi
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Patent number: 9678458Abstract: Provided is a remanufacturing method of a developer accommodating unit including a frame member configured to accommodate a flexible container for accommodating developer. The remanufacturing method includes taking out the flexible container from the inside of the frame member, and refilling the developer into the flexible container.Type: GrantFiled: August 18, 2016Date of Patent: June 13, 2017Assignee: Canon Kabushiki KaishaInventors: Takashi Kase, Kouki Yano, Yuta Isobe, Takahiro Ikeda, Yusuke Usui
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Publication number: 20170075259Abstract: Provided is a remanufacturing method of a developer accommodating unit including a flexible container provided with an opening and configured to accommodate developer, and a frame member configured to accommodate the flexible container. The remanufacturing method includes refilling the developer into the flexible container.Type: ApplicationFiled: November 22, 2016Publication date: March 16, 2017Inventors: Yuta Isobe, Takashi Kase, Kouki Yano, Takahiro Ikeda, Yusuke Usui, Shinjiro Toba, Masaaki Sato, Yosuke Kashiide, Satoshi Nishiya, Tatsuya Suzuki, Kohei Matsuda
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Patent number: 9581933Abstract: A regulating member for regulating a developer amount carried on a developer carrying member includes a plate-like supporting member having an elasticity, the supporting member being provided with a fixed portion for being fixed to a fixed part; a first contact portion contactable to the developer carrying member, the first contact portion protruding from the regulating member from a side of the supporting member; and a second contact portion contactable to and the developer carrying member, the second contact portion being at a position closer to the fixed portion than the first contact portion.Type: GrantFiled: January 12, 2015Date of Patent: February 28, 2017Assignee: Canon Kabushiki KaishaInventors: Takashi Kase, Hideaki Hasegawa
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Patent number: 9535372Abstract: Provided is a remanufacturing method of a developer accommodating unit including a flexible container provided with an opening and configured to accommodate developer, and a frame member configured to accommodate the flexible container. The remanufacturing method includes refilling the developer into the flexible container.Type: GrantFiled: October 22, 2015Date of Patent: January 3, 2017Assignee: Canon Kabushiki KaishaInventors: Yuta Isobe, Takashi Kase, Kouki Yano, Takahiro Ikeda, Yusuke Usui, Shinjiro Toba, Masaaki Sato, Yosuke Kashiide, Satoshi Nishiya, Tatsuya Suzuki, Kohei Matsuda