Patents by Inventor Kazufumi Kimura
Kazufumi Kimura 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: 11946924Abstract: A crosslinked fluoropolymer resin is configured to include a measuring step of irradiating a surface of the crosslinked fluoropolymer resin with a laser to measure a Raman spectrum, and an acceptance or rejection decision step of determining an acceptance or a rejection of a quality of a measurement region irradiated with the laser, on the basis of an intensity of a fluorescence spectrum relative to an intensity of a Raman scattering peak, which is ascribed to a CF2 stretching vibration, in the measured Raman spectrum.Type: GrantFiled: January 19, 2021Date of Patent: April 2, 2024Assignee: PROTERIAL, LTD.Inventors: Kazufumi Suenaga, Koki Hirano, Kenta Kimura
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Patent number: 10682808Abstract: A fabrication method includes laminating a fabrication material to form an object, and applying a release material on a surface of the object to form a release layer on the surface of the object. A surface free energy of the release material is equal to or smaller than 25 mN/m.Type: GrantFiled: August 7, 2018Date of Patent: June 16, 2020Assignee: RICOH COMPANY, LTD.Inventors: Takashi Fujita, Akira Saito, Kiichi Kamoda, Yasutada Shitara, Kazuhiko Watanabe, Hitoshi Iwatsuki, Yuuya Endoh, Kazufumi Kimura, Yasuyuki Yamashita, Shinnosuke Koshizuka, Yuuki Kamon, Nozomu Tamoto
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Publication number: 20190126538Abstract: A fabrication method includes laminating a fabrication material to form an object, and applying a release material on a surface of the object to form a release layer on the surface of the object. A surface free energy of the release material is equal to or smaller than 25 mN/m.Type: ApplicationFiled: August 7, 2018Publication date: May 2, 2019Applicant: Ricoh Company, Ltd.Inventors: Takashi FUJITA, Akira SAITO, Kiichi KAMODA, Yasutada SHITARA, Kazuhiko WATANABE, Hitoshi IWATSUKI, Yuuya ENDOH, Kazufumi KIMURA, Yasuyuki YAMASHITA, Shinnosuke KOSHIZUKA, Yuuki KAMON, Nozomu TAMOTO
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Patent number: 9897947Abstract: An image forming apparatus includes a photoconductor on which an electrostatic latent image is formed by irradiation of the photoconductor with light, a charger, a developing device, a transfer device, a charge removal execution determiner, and a power supply controller. The charger receives a superimposed voltage of a DC voltage and an AC voltage to charge the photoconductor. The developing device develops the electrostatic latent image on the photoconductor into a toner image. The transfer device transfers the developed toner image to a recording medium. The charge removal execution determiner issues a charge removal command when a flow of electric charge from the transfer device into the photoconductor has occurred in an image forming outputting operation. The power supply controller applies only the AC voltage to the charger for a predetermined period in a state in which the photoconductor is rotated, when the charge removal command is issued.Type: GrantFiled: September 13, 2016Date of Patent: February 20, 2018Assignee: Ricoh Company, Ltd.Inventors: Yuka Kanatani, Yuushi Hirayama, Kazufumi Kimura, Ryota Kidera, Masanori Moro, Yoshihiro Fujiwara, Hideyasu Seki
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Publication number: 20170075264Abstract: An image forming apparatus includes a photoconductor on which an electrostatic latent image is formed by irradiation of the photoconductor with light, a charger, a developing device, a transfer device, a charge removal execution determiner, and a power supply controller. The charger receives a superimposed voltage of a DC voltage and an AC voltage to charge the photoconductor. The developing device develops the electrostatic latent image on the photoconductor into a toner image. The transfer device transfers the developed toner image to a recording medium. The charge removal execution determiner issues a charge removal command when a flow of electric charge from the transfer device into the photoconductor has occurred in an image forming outputting operation. The power supply controller applies only the AC voltage to the charger for a predetermined period in a state in which the photoconductor is rotated, when the charge removal command is issued.Type: ApplicationFiled: September 13, 2016Publication date: March 16, 2017Inventors: Yuka KANATANI, Yuushi HIRAYAMA, Kazufumi KIMURA, Ryota KIDERA, Masanori MORO, Yoshihiro FUJIWARA, Hideyasu SEKI
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Patent number: 9442420Abstract: An image forming apparatus includes a developer bearer and a toner pattern bearer rotatable in a given direction of rotation to bear an adjustment toner pattern formed with the developer bearer. A toner pattern detector detects an amount of reflection light reflected by the adjustment toner pattern on the toner pattern bearer. A controller performs an adjustment mode to convert the detected amount of reflection light into a toner adhesion amount of toner of the adjustment toner pattern adhered to the toner pattern bearer. The controller forms an adhesion amount suppressing toner image on an upstream region on the toner pattern bearer that is upstream from the adjustment toner pattern in the direction of rotation of the toner pattern bearer. The upstream region is defined by a circumferential length of the developer bearer in the direction of rotation of the toner pattern bearer.Type: GrantFiled: October 7, 2015Date of Patent: September 13, 2016Assignee: RICOH COMPANY, LTD.Inventors: Akira Yoshida, Kohta Fujimori, Kayoko Tanaka, Natsumi Matsue, Kazufumi Kimura
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Patent number: 9436135Abstract: An image forming apparatus includes an endless belt-shaped image bearer that is rotatably supported and entrained around rollers; a transfer member positioned to contact an outer surface of the image bearer; a transfer device to transfer a toner image conveyed while being carried on the outer surface of the image bearer onto a transfer medium conveyed between the image bearer and the transfer member; a toner image sensor to detect the toner image transferred onto the transfer medium; and a conveyance speed controller to fine-tune a conveyance speed of the transfer medium. Based on fine-tuning data of the conveyance speed controller, a detection result of the toner image sensor is corrected and image forming conditions are corrected based on the corrected detection result.Type: GrantFiled: June 15, 2015Date of Patent: September 6, 2016Assignee: Ricoh Company, Ltd.Inventors: Keita Sone, Nobutaka Takeuchi, Shinichi Akatsu, Tomohide Takenaka, Kohta Fujimori, Tetsuya Muto, Akira Yoshida, Keita Gotoh, Yuuichiroh Uematsu, Kazufumi Kimura
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Publication number: 20160131991Abstract: An image forming apparatus includes a developer bearer and a toner pattern bearer rotatable in a given direction of rotation to bear an adjustment toner pattern formed with the developer bearer. A toner pattern detector detects an amount of reflection light reflected by the adjustment toner pattern on the toner pattern bearer. A controller performs an adjustment mode to convert the detected amount of reflection light into a toner adhesion amount of toner of the adjustment toner pattern adhered to the toner pattern bearer. The controller forms an adhesion amount suppressing toner image on an upstream region on the toner pattern bearer that is upstream from the adjustment toner pattern in the direction of rotation of the toner pattern bearer. The upstream region is defined by a circumferential length of the developer bearer in the direction of rotation of the toner pattern bearer.Type: ApplicationFiled: October 7, 2015Publication date: May 12, 2016Applicant: Ricoh Company, Ltd.Inventors: Akira YOSHIDA, Kohta Fujimori, Kayoko Tanaka, Natsumi Matsue, Kazufumi Kimura
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Publication number: 20150362868Abstract: An image forming apparatus includes an endless belt-shaped image bearer that is rotatably supported and entrained around rollers; a transfer member positioned to contact an outer surface of the image bearer; a transfer device to transfer a toner image conveyed while being carried on the outer surface of the image bearer onto a transfer medium conveyed between the image bearer and the transfer member; a toner image sensor to detect the toner image transferred onto the transfer medium; and a conveyance speed controller to fine-tune a conveyance speed of the transfer medium. Based on fine-tuning data of the conveyance speed controller, a detection result of the toner image sensor is corrected and image forming conditions are corrected based on the corrected detection result.Type: ApplicationFiled: June 15, 2015Publication date: December 17, 2015Applicant: RICOH COMPANY, LTD.Inventors: Keita Sone, Nobutaka Takeuchi, Shinichi Akatsu, Tomohide Takenaka, Kohta Fujimori, Tetsuya Muto, Akira Yoshida, Keita Gotoh, Yuuichiroh Uematsu, Kazufumi Kimura
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Patent number: 8284251Abstract: In a tire type determination method, a surface image of a tread portion of a tire mounted on a vehicle is captured by a camera fixed at a predetermined position in a tilted hanger conveyor line, which is located downstream in a vehicle-carrying direction with respect to a position at which the tire of the vehicle is lifted from the ground and starts moving diagonally upward. Further, image information is extracted from the surface image of the tread portion, and a tire type is determined by checking the image information against registered information. A vehicle inspection system includes a tire type determination portion and a vehicle type information obtaining portion so as to determine the tire type using the method. A conformance determination portion determines whether the tire type determined by the tire type determination portion conforms to a specified tire type searched based on the vehicle type information.Type: GrantFiled: March 3, 2009Date of Patent: October 9, 2012Assignee: Toyota Jidosha Kabushiki KaishaInventors: Kazutsugu Suita, Kazufumi Kimura, Rikio Azumaya
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Publication number: 20090244284Abstract: In a tire type determination method, a surface image of a tread portion of a tire mounted on a vehicle is captured by a camera fixed at a predetermined position in a tilted hanger conveyor line, which is located downstream in a vehicle-carrying direction with respect to a position at which the tire of the vehicle is lifted from the ground and starts moving diagonally upward. Further, image information is extracted from the surface image of the tread portion, and a tire type is determined by checking the image information against registered information. A vehicle inspection system includes a tire type determination portion and a vehicle type information obtaining portion so as to determine the tire type using the method. A conformance determination portion determines whether the tire type determined by the tire type determination portion conforms to a specified tire type searched based on the vehicle type information.Type: ApplicationFiled: March 3, 2009Publication date: October 1, 2009Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, Sanyu Industries, Ltd.Inventors: Kazutsugu Suita, Kazufumi Kimura, Rikio Azumaya