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).

  • Patent number: 6659584
    Abstract: 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: Grant
    Filed: December 18, 1998
    Date of Patent: December 9, 2003
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yasushi Miura, Hiroyuki Miyake, Hiroyuki Kuriyama, Masashi Shimizu, Chikanobu Ikeda, Shigeru Watanabe
  • Publication number: 20030142161
    Abstract: 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: Application
    Filed: December 18, 1998
    Publication date: July 31, 2003
    Inventors: YASUSHI MIURA, HIROYUKI MIYAKE, HIROYUKI KURIYAMA, MASASHI SHIMIZU, CHIKANOBU IKEDA, SHIGERU WATANABE
  • Publication number: 20030102445
    Abstract: 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: Application
    Filed: September 6, 2002
    Publication date: June 5, 2003
    Inventors: Mamoru Kamoshida, Masashi Oda, Takashi Nishi, Kiminori Iga, Masashi Shimizu
  • Patent number: 6527358
    Abstract: 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: Grant
    Filed: December 18, 1998
    Date of Patent: March 4, 2003
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hiroyuki Kuriyama, Yasushi Miura, Masashi Shimizu, Chikanobu Ikeda, Shigeru Watanabe
  • Publication number: 20030030688
    Abstract: 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: Application
    Filed: October 16, 2002
    Publication date: February 13, 2003
    Applicant: Canon Kabushiki Kaisha
    Inventors: Hiroyuki Kuriyama, Yasushi Miura, Masashi Shimizu, Chikanobu Ikeda, Shigeru Watanabe
  • Patent number: 6501814
    Abstract: 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: Grant
    Filed: September 25, 2001
    Date of Patent: December 31, 2002
    Assignee: Hitachi, Ltd.
    Inventors: Masashi Shimizu, Koichi Maki, Keiichiro Shibata, Masashi Oda, Naoki Kumagai, Hidetoshi Kanai
  • Publication number: 20020196890
    Abstract: 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: Application
    Filed: September 25, 2001
    Publication date: December 26, 2002
    Applicant: Hitachi, Ltd.
    Inventors: Masashi Shimizu, Koichi Maki, Keiichiro Shibata, Masashi Oda, Naoki Kumagai, Hidetoshi Kanai
  • Publication number: 20020140756
    Abstract: 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: Application
    Filed: December 18, 1998
    Publication date: October 3, 2002
    Inventors: HIROYUKI KURIYAMA, YASUSHI MIURA, MASASHI SHIMIZU, CHIKANOBU IKEDA, SHIGERU WATANABE
  • Patent number: 6441630
    Abstract: 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: Grant
    Filed: August 7, 2000
    Date of Patent: August 27, 2002
    Assignee: Tokyo Electron Limited
    Inventors: Tadashi Obikane, Masashi Shimizu
  • Patent number: 6430248
    Abstract: 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: Grant
    Filed: December 21, 1999
    Date of Patent: August 6, 2002
    Assignee: Hitachi, Ltd.
    Inventors: Masashi Shimizu, Koichi Maki, Keiichiro Shibata, Masashi Oda, Naoki Kumagai, Hidetoshi Kanai
  • Patent number: 5992984
    Abstract: 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: Grant
    Filed: July 9, 1997
    Date of Patent: November 30, 1999
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yoshiyuki Imanaka, Toshio Kashino, Shuji Koyama, Masashi Shimizu, Yoshie Asakawa
  • Patent number: 5970183
    Abstract: 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: Grant
    Filed: December 24, 1996
    Date of Patent: October 19, 1999
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masami Amemiya, Masashi Shimizu
  • Patent number: 5886488
    Abstract: 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: Grant
    Filed: May 2, 1997
    Date of Patent: March 23, 1999
    Assignee: Tokyo Electron Limited
    Inventors: Hisashi Nakajima, Masashi Shimizu, Kazuhito Yokomori
  • Patent number: 5711303
    Abstract: 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: Grant
    Filed: October 30, 1996
    Date of Patent: January 27, 1998
    Assignee: Omron Corporation
    Inventors: Masashi Shimizu, Osamu Shirasaki, Shinsaku Yanagi, Yoshinori Miyawaki
  • Patent number: 5582179
    Abstract: 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: Grant
    Filed: May 17, 1994
    Date of Patent: December 10, 1996
    Assignee: Omron Corporation
    Inventors: Masashi Shimizu, Osamu Shirasaki, Shinsaku Yanagi, Yoshinori Miyawaki