Patents by Inventor Shuji Aoki

Shuji Aoki 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).

  • Publication number: 20050148272
    Abstract: There is provided a characteristic adjustment method for an image forming apparatus that is provided with a multi-electron source in which a plurality of electron-emitting devices are electrically connected by wiring and arranged on a substrate and a fluorescent member for emitting light by irradiation of an electron beam, the method including: a measurement step of dividing a display portion of the image forming apparatus into a plurality of areas and measuring light emitting characteristics of at least one or more of the electron-emitting devices in the respective divided areas, and a shifting step of shifting the light emitting characteristics of the electron-emitting devices in the divided areas to individual characteristic target values by applying a characteristic shift voltage to the electron-emitting devices.
    Type: Application
    Filed: February 4, 2005
    Publication date: July 7, 2005
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Akihiko Yamano, Mitsutoshi Kuno, Shuji Aoki, Takahiro Oguchi
  • Patent number: 6890229
    Abstract: A method for adjusting characteristics of an electron source having a plurality of electron-emitting devices, and a method for manufacturing the electron source include the step of applying a pulse of a voltage for adjustment to an electron-emitting device to be adjusted one or more times according to a characteristic of the electron-emitting device, wherein the voltage for adjustment is selected from a plurality of voltages having discrete values according to the characteristic of the electron-emitting device, and a number of applying times of the pulse is determined according to the characteristic of the electron-emitting device and the selected voltage.
    Type: Grant
    Filed: February 10, 2004
    Date of Patent: May 10, 2005
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shuji Aoki, Takahiro Oguchi
  • Patent number: 6888519
    Abstract: There is provided a characteristic adjustment method for an image forming apparatus that is provided with a multi-electron source in which a plurality of electron-emitting devices are electrically connected by wiring and arranged on a substrate and a fluorescent member for emitting light by irradiation of an electron beam, the method including: a measurement step of dividing a display portion of the image forming apparatus into a plurality of areas and measuring light emitting characteristics of at least one or more of the electron-emitting devices in the respective divided areas, and a shifting step of shifting the light emitting characteristics of the electron-emitting devices in the divided areas to individual characteristic target values by applying a characteristic shift voltage to the electron-emitting devices.
    Type: Grant
    Filed: September 23, 2002
    Date of Patent: May 3, 2005
    Assignee: Canon Kabushiki Kaisha
    Inventors: Akihiko Yamano, Mitsutoshi Kuno, Shuji Aoki, Takahiro Oguchi
  • Patent number: 6822397
    Abstract: The present invention relates to the adjustment of luminance. The present invention is a method of manufacturing image forming apparatus including a step of applying characteristic shift voltage comprising a plurality of pulses in which the amplitude of the pulse obtained from the look-up table has two or more values, to the emitter, the look-up table storing the amplitude of the pulse and the number of the pulse for shifting characteristic of emitters to a predetermined luminance target value on the basis of the measurement result of the luminance. Moreover, the present invention is a method of manufacturing image forming apparatus comprising a step of applying the second pulses of characteristic shift voltage having the amplitude which was determined in response to the measurement result of the luminance after the first characteristic shift voltage had been applied to the emitter.
    Type: Grant
    Filed: May 6, 2003
    Date of Patent: November 23, 2004
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hideshi Kawasaki, Shuji Aoki, Izumi Tabata, Akihiko Yamano, Hisashi Sakata
  • Publication number: 20040155852
    Abstract: A method for adjusting characteristics of an electron source having a plurality of electron-emitting devices, and a method for manufacturing the electron source include the step of applying a pulse of a voltage for adjustment to an electron-emitting device to be adjusted one or more times according to a characteristic of the electron-emitting device, wherein the voltage for adjustment is selected from a plurality of voltages having discrete values according to the characteristic of the electron-emitting device, and a number of applying times of the pulse is determined according to the characteristic of the electron-emitting device and the selected voltage.
    Type: Application
    Filed: February 10, 2004
    Publication date: August 12, 2004
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Shuji Aoki, Takahiro Oguchi
  • Patent number: 6712660
    Abstract: A method for adjusting characteristics of an electron source having a plurality of electron-emitting devices, and a method for manufacturing the electron source include the step of applying a pulse of a voltage for adjustment to an electron-emitting device to be adjusted one or more times according to a characteristic of the electron-emitting device, wherein the voltage for adjustment is selected from a plurality of voltages having discrete values according to the characteristic of the electron-emitting device, and a number of applying times of the pulse is determined according to the characteristic of the electron-emitting device and the selected voltage.
    Type: Grant
    Filed: August 2, 2002
    Date of Patent: March 30, 2004
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shuji Aoki, Takahiro Oguchi
  • Publication number: 20040034487
    Abstract: The present invention relates to the adjustment of luminance. The present invention is a method of manufacturing image forming apparatus including a step of applying characteristic shift voltage comprising a plurality of pulses in which the amplitude of the pulse obtained from the look-up table has two or more values, to the emitter, the look-up table storing the amplitude of the pulse and the number of the pulse for shifting characteristic of emitters to a predetermined luminance target value on the basis of the measurement result of the luminance. Moreover, the present invention is a method of manufacturing image forming apparatus comprising a step of applying the second pulses of characteristic shift voltage having the amplitude which was determined in response to the measurement result of the luminance after the first characteristic shift voltage had been applied to the emitter.
    Type: Application
    Filed: May 6, 2003
    Publication date: February 19, 2004
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Hideshi Kawasaki, Shuji Aoki, Izumi Tabata, Akihiko Yamano, Hisashi Sakata
  • Patent number: 6661179
    Abstract: A method for adjusting electron emitting characteristics of a multi-electron source having plural electron emitting devices disposed on a substrate. The method comprises measuring electron emission characteristics of the devices and setting a characteristic adjustment target value. Plural characteristic shift voltages having discrete values are applied to some of the devices, electron emission characteristics of each of these devices are measured, and a characteristic adjustment table is generated for each characteristics shift voltage value according to change rates of these measured characteristics. A predetermined characteristics shift voltage value is selected based on the corresponding table, and that voltage is applied to the devices to cause their characteristics to shift towards the target value. A change in the electron emission characteristics is monitored to revise the characteristics shift condition.
    Type: Grant
    Filed: August 26, 2002
    Date of Patent: December 9, 2003
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shuji Aoki, Takahiro Oguchi
  • Publication number: 20030083843
    Abstract: There is provided a characteristic adjustment method for an image forming apparatus that is provided with a multi-electron source in which a plurality of electron-emitting devices are electrically connected by wiring and arranged on a substrate and a fluorescent member for emitting light by irradiation of an electron beam, the method including: a measurement step of dividing a display portion of the image forming apparatus into a plurality of areas and measuring light emitting characteristics of at least one or more of the electron-emitting devices in the respective divided areas, and a shifting step of shifting the light emitting characteristics of the electron-emitting devices in the divided areas to individual characteristic target values by applying a characteristic shift voltage to the electron-emitting devices.
    Type: Application
    Filed: September 23, 2002
    Publication date: May 1, 2003
    Inventors: Akihiko Yamano, Mitsutoshi Kuno, Shuji Aoki, Takahiro Oguchi
  • Publication number: 20030057850
    Abstract: The electron emission characteristics and adjustment times of a multi electron source are made approximately equal with simple processes.
    Type: Application
    Filed: August 26, 2002
    Publication date: March 27, 2003
    Inventors: Shuji Aoki, Takahiro Oguchi
  • Publication number: 20030036331
    Abstract: A method for adjusting characteristics of an electron source having a plurality of electron-emitting devices, and a method for manufacturing the electron source include the step of applying a pulse of a voltage for adjustment to an electron-emitting device to be adjusted one or more times according to a characteristic of the electron-emitting device, wherein the voltage for adjustment is selected from a plurality of voltages having discrete values according to the characteristic of the electron-emitting device, and a number of applying times of the pulse is determined according to the characteristic of the electron-emitting device and the selected voltage.
    Type: Application
    Filed: August 2, 2002
    Publication date: February 20, 2003
    Inventors: Shuji Aoki, Takahiro Oguchi
  • Patent number: 6304005
    Abstract: A fabrication apparatus including an emergency stop circuit which is an emergency stop switch has a first electromagnetic switch for supplying and shutting off power to the apparatus and a second electromagnetic switch for controlling power supply to an electromagnetic coil of the first electromagnetic switch. Power is supplied to the electromagnetic coil of the first electromagnetic switch from the primary side of the first electromagnetic switch via a contact of the second electromagnetic switch. An uninterruptible power source supplies power to an electromagnetic coil of the second electromagnetic switch via the emergency stop circuit. This emergency stop switch is inserted midway along a power line to the electromagnetic coil of the second electromagnetic switch. This allows a safe emergency stop of the fabrication apparatus for semiconductors and the like.
    Type: Grant
    Filed: March 23, 1999
    Date of Patent: October 16, 2001
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shuji Aoki, Shunzo Imai
  • Patent number: 6050750
    Abstract: A flexible container for a particulate material includes a main body having a sealable input opening in an upper portion thereof, and a sleeve extending from a lower portion of the main body. A connector is connected to a distal end which is folded along a side of the sleeve for storage. In carrying out a method of removing and transmitting the particulate material to another destination, the connector is connected to a carrier gas control device which supplies a carrier gas to the container that is mixed with the particulate material then the device has a transmitting pipe which transmits the particulate material to a container in a distant place. A suction is provided by the container in order to draw the particulate material to the container.
    Type: Grant
    Filed: April 10, 1997
    Date of Patent: April 18, 2000
    Assignee: Toyo Hitec Kabushiki Kaisha
    Inventor: Shuji Aoki