Patents by Inventor Masashi Shimizu
Masashi Shimizu 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: 6659584Abstract: A printing apparatus and a print control method which detect a defective printing element in operation failure status while reciprocate-scanning a printhead, and perform appropriate print control such as complementary printing on an unprinted portion by the defective printing element, without reducing the printing speed. An apparatus, to which the method is applied, has a photosensor 8, to detect ink discharge statuses of a plurality of nozzles of a printhead 5, which is provided between a home position of the printhead and the outside of an effective printing area where image printing is to be made. While the printhead 5 is scanned, test ink discharge is performed at the position of the photosensor 8, and the ink discharge statuses of the nozzles are detected by the photosensor 8. A corrector 123 analyzes the operation statuses of the nozzles of the printhead 5 based on the results of detection in a real time manner. A CPU 25 performs print control based on the results of analysis.Type: GrantFiled: December 18, 1998Date of Patent: December 9, 2003Assignee: Canon Kabushiki KaishaInventors: Yasushi Miura, Hiroyuki Miyake, Hiroyuki Kuriyama, Masashi Shimizu, Chikanobu Ikeda, Shigeru Watanabe
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Publication number: 20030142161Abstract: A printing apparatus and a print control method which detect a defective printing element in operation failure status while reciprocate-scanning a printhead, and perform appropriate print control such as complementary printing on an unprinted portion by the defective printing element, without reducing the printing speed. An apparatus, to which the method is applied, has a photosensor 8, to detect ink discharge statuses of a plurality of nozzles of a printhead 5, which is provided between a home position of the printhead and the outside of an effective printing area where image printing is to be made. While the printhead 5 is scanned, test ink discharge is performed at the position of the photosensor 8, and the ink discharge statuses of the nozzles are detected by the photosensor 8. A corrector 123 analyzes the operation statuses of the nozzles of the printhead 5 based on the results of detection in a real time manner. A CPU 25 performs print control based on the results of analysis.Type: ApplicationFiled: December 18, 1998Publication date: July 31, 2003Inventors: YASUSHI MIURA, HIROYUKI MIYAKE, HIROYUKI KURIYAMA, MASASHI SHIMIZU, CHIKANOBU IKEDA, SHIGERU WATANABE
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Publication number: 20030102445Abstract: A high-polymer neutron shielding material which scarcely reduces the hydrogen number density when exposed to a high temperature of 150 to 200° C.Type: ApplicationFiled: September 6, 2002Publication date: June 5, 2003Inventors: Mamoru Kamoshida, Masashi Oda, Takashi Nishi, Kiminori Iga, Masashi Shimizu
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Patent number: 6527358Abstract: A printing apparatus and an ink-discharge status detection method which perform appropriate print control by detecting discharge failure with a simple construction, without reducing the printing speed. The apparatus, to which the method is applied, performs test ink discharge from a part of nozzles of a printhead while scanning the printhead, and detects ink discharge statuses of the nozzles of the printhead by using a photosensor in an area between the home position of the printhead and a position outside of an effective printing area. In next detection, nozzles different from those used in the previous test ink discharge are used for performing test ink discharge, and discharge statuses are detected. Discharge statuses of all the nozzles are detected in forward and backward scannings or a plurality of scannings.Type: GrantFiled: December 18, 1998Date of Patent: March 4, 2003Assignee: Canon Kabushiki KaishaInventors: Hiroyuki Kuriyama, Yasushi Miura, Masashi Shimizu, Chikanobu Ikeda, Shigeru Watanabe
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Publication number: 20030030688Abstract: A printing apparatus and an ink-discharge status detection method which perform appropriate print control by detecting discharge failure with a simple construction, without reducing the printing speed. The apparatus, to which the method is applied, performs test ink discharge from a part of nozzles of a printhead while scanning the printhead, and detects ink discharge statuses of the nozzles of the printhead by using a photosensor in an area between the home position of the printhead and a position outside of an effective printing area. In next detection, nozzles different from those used in the previous test ink discharge are used for performing test ink discharge, and discharge statuses are detected. Discharge statuses of all the nozzles are detected in forward and backward scannings or a plurality of scannings.Type: ApplicationFiled: October 16, 2002Publication date: February 13, 2003Applicant: Canon Kabushiki KaishaInventors: Hiroyuki Kuriyama, Yasushi Miura, Masashi Shimizu, Chikanobu Ikeda, Shigeru Watanabe
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Patent number: 6501814Abstract: A dry radioactive substance storage facility stores spent fuel assemblies from nuclear power plants. The facility comprises a structure having a storage room storing storage tubes containing spent fuel assemblies. An air inlet duct defining an air inlet passage through which air is supplied into the storage room and a stack defining an air discharge passage through which air from the storage room is discharged outside are connected to the storage room. Radiation shielding members are disposed on the side of the air inlet duct and on the side of the stack, respectively, in the storage room to intercept radiation propagating toward the air inlet passage and the air discharge passage.Type: GrantFiled: September 25, 2001Date of Patent: December 31, 2002Assignee: Hitachi, Ltd.Inventors: Masashi Shimizu, Koichi Maki, Keiichiro Shibata, Masashi Oda, Naoki Kumagai, Hidetoshi Kanai
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Publication number: 20020196890Abstract: A dry radioactive substance storage facility stores spent fuel assemblies from nuclear power plants. The facility comprises a structure having a storage room storing storage tubes containing spent fuel assemblies. An air inlet duct defining an air inlet passage through which air is supplied into the storage room and an stack defining an air discharge passage through which air from the storage room is discharged outside are connected to the storage room. Radiation shielding members are disposed on the side of the air inlet duct and on the side of the stack, respectively, in the storage room to intercept radiation propagating toward the air inlet passage and the air discharge passage.Type: ApplicationFiled: September 25, 2001Publication date: December 26, 2002Applicant: Hitachi, Ltd.Inventors: Masashi Shimizu, Koichi Maki, Keiichiro Shibata, Masashi Oda, Naoki Kumagai, Hidetoshi Kanai
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Publication number: 20020140756Abstract: A printing apparatus and an ink-discharge status detection method which perform appropriate print control by detecting discharge failure with a simple construction, without reducing the printing speed. The apparatus, to which the method is applied, performs test ink discharge from a part of nozzles of a printhead while scanning the printhead, and detects ink discharge statuses of the nozzles of the printhead by using a photosensor in an area between the home position of the printhead and a position outside of an effective printing area. In next detection, nozzles different from those used in the previous test ink discharge are used for performing test ink discharge, and discharge statuses are detected. Discharge statuses of all the nozzles are detected in forward and backward scannings or a plurality of scannings.Type: ApplicationFiled: December 18, 1998Publication date: October 3, 2002Inventors: HIROYUKI KURIYAMA, YASUSHI MIURA, MASASHI SHIMIZU, CHIKANOBU IKEDA, SHIGERU WATANABE
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Patent number: 6441630Abstract: A head plate opening/closing force-reducing mechanism includes a head plate (13) one end of which is rotatably attached (13B) to a main body so as to open/close an opening (31) formed in the main body (10), and at least one push-up mechanism (16, 17, 18) attached to at least one edge (36) of the head plate, the push-up mechanism being located in a position close to an opposite end of the head plate.Type: GrantFiled: August 7, 2000Date of Patent: August 27, 2002Assignee: Tokyo Electron LimitedInventors: Tadashi Obikane, Masashi Shimizu
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Patent number: 6430248Abstract: A dry radioactive substance storage facility stores spent fuel assemblies from nuclear power plants. The facility comprises a structure having a storage room storing storage tubes containing spent fuel assemblies. An air inlet duct defining an air inlet passage through which air is supplied into the storage room and an stack defining an air discharged passage through which air from the storage room is discharge outside are connected to the storage room. Radiation shielding members are disposed on the side of the air inlet duct and on the side of the stack, respectively, in the storage room to intercept radiation propagating toward the air inlet passage and the air discharge passage.Type: GrantFiled: December 21, 1999Date of Patent: August 6, 2002Assignee: Hitachi, Ltd.Inventors: Masashi Shimizu, Koichi Maki, Keiichiro Shibata, Masashi Oda, Naoki Kumagai, Hidetoshi Kanai
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Patent number: 5992984Abstract: This invention provides, in a novel liquid discharge method utilizing a movable member, a configuration for detecting presence or absence of liquid in the liquid path or discharge state of the liquid. In an embodiment of this invention, the element substrate of the liquid discharge head is rendered electrically conductive and a partition wall for separating a liquid path for the liquid to be discharged and a liquid path for generating energy for liquid discharge upon heating is also rendered electrically conductive, and a detecting pulse is applied to the partition wall to detect the difference in potential or the variation in electrostatic capacitance between the element substrate and the partition wall, whereby the presence or absence of liquid in the small liquid path is detected.Type: GrantFiled: July 9, 1997Date of Patent: November 30, 1999Assignee: Canon Kabushiki KaishaInventors: Yoshiyuki Imanaka, Toshio Kashino, Shuji Koyama, Masashi Shimizu, Yoshie Asakawa
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Patent number: 5970183Abstract: An original image is read, image data corresponding to a black frame is added to the read original image data, and the image data with the frame is output. In this case, when the shape of the read original image data is not a rectangular shape, since the black frame is not added as intended, binarized data of the read image before the image frame is added is directly output.Type: GrantFiled: December 24, 1996Date of Patent: October 19, 1999Assignee: Canon Kabushiki KaishaInventors: Masami Amemiya, Masashi Shimizu
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Patent number: 5886488Abstract: A mechanism for stopping an object to be swung in a predetermined stop position and holding the object in that position includes a temporary stopping unit for stopping the swing of the object in a temporary stop position before the stop position, a rotation complementing unit for complementarily further rotating the object from the temporary stop position to the stop position, and a holding unit for holding the object in the stop position.Type: GrantFiled: May 2, 1997Date of Patent: March 23, 1999Assignee: Tokyo Electron LimitedInventors: Hisashi Nakajima, Masashi Shimizu, Kazuhito Yokomori
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Patent number: 5711303Abstract: A measuring device to measure vascular function of an artery includes a cuff that is attachable to a specified part of a body to constrict the artery, a pulse wave amplitude calculating device that calculates an amplitude of a pulse wave that is synchronous with a heartbeat and is based on a change in a volume of the artery, and an inference device that infers a pressure-to-volume characteristic for the artery based on the amplitude of the pulse wave and a corresponding pressure. A blood pressure meter incorporating the measuring device uses a measure of the vascular function to determine a degree of sclerosis in the artery.Type: GrantFiled: October 30, 1996Date of Patent: January 27, 1998Assignee: Omron CorporationInventors: Masashi Shimizu, Osamu Shirasaki, Shinsaku Yanagi, Yoshinori Miyawaki
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Patent number: 5582179Abstract: A measuring device to measure vascular function of an artery includes a cuff that is attachable to a specified part of a body to constrict the artery, a pulse wave amplitude calculating device that calculates an amplitude of a pulse wave that is synchronous with a heartbeat and is based on a change in a volume of the artery, and an inference device that infers a pressure-to-volume characteristic for the artery based on the amplitude of the pulse wave and a corresponding pressure. A blood pressure meter incorporating the measuring device uses a measure of the vascular function to determine a degree of sclerosis in the artery.Type: GrantFiled: May 17, 1994Date of Patent: December 10, 1996Assignee: Omron CorporationInventors: Masashi Shimizu, Osamu Shirasaki, Shinsaku Yanagi, Yoshinori Miyawaki