Patents by Inventor Kazunari Fujii

Kazunari Fujii 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: 9302478
    Abstract: A semiconductor device includes unit circuits arranged in a first direction, a bonding pad, and electrically conductive patterns configured to connect the unit circuits to the bonding pad. Each of the electrically conductive patterns includes a first portion connected to the bonding pad and extending in the first direction, and a second portion connected to the corresponding unit circuit. The electrically conductive patterns include a first type pattern in which the first portion is positioned on a first side of the second portion in a view from the first direction, and a second type pattern in which the first portion is positioned on a second side, which is opposite to the first side, of the second portion in a view from the first direction.
    Type: Grant
    Filed: October 30, 2013
    Date of Patent: April 5, 2016
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Tatsuya Suzuki, Kazunari Fujii
  • Publication number: 20160077058
    Abstract: Provided is an ultrasonic detection device including: a capacitive electromechanical transducer including a cell that includes a first electrode and a second electrode disposed so as to oppose with a space; a voltage source for developing a potential difference between the first electrode and the second electrode; and an electric circuit for converting a current, which is caused by a change in electrostatic capacitance between the first electrode and the second electrode due to vibration of the second electrode, into a voltage, in which the capacitive electromechanical transducer provides an output current with a high-pass characteristic having a first cutoff frequency with respect to a frequency, the electric circuit provides an output with a low-pass characteristic having a second cutoff frequency with respect to the frequency, and the second cutoff frequency is smaller than the first cutoff frequency.
    Type: Application
    Filed: November 17, 2015
    Publication date: March 17, 2016
    Inventors: Takahiro Akiyama, Makoto Takagi, Kazunari Fujii, Hidemasa Mizutani
  • Patent number: 9278518
    Abstract: A printhead substrate comprising a plurality of printing portions and a plurality of ink supply ports, wherein the plurality of printing portions are divided into a plurality of groups, and the plurality of ink supply ports are arranged so as to correspond to the plurality of groups respectively, the printhead substrate also comprises a plurality of first voltage wiring portions provided in correspondence with the plurality of groups, and each first voltage wiring portion includes a first wiring pattern configured to connect the first terminals of the respective printing portions in the corresponding group with each other, and a second wiring pattern connected to the first wiring pattern and arranged between an ink supply port in the corresponding group and its neighboring ink supply port.
    Type: Grant
    Filed: October 20, 2014
    Date of Patent: March 8, 2016
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kazunari Fujii, Masanobu Ohmura
  • Publication number: 20160039200
    Abstract: A liquid discharge head substrate is provided. The liquid discharge head substrate includes a discharge unit including a discharge element configured to generate energy for discharging a liquid from an orifice and a discharge control circuit configured to control the discharge element, and a first voltage generation circuit configured to supply, to the discharge control circuit, a first driving voltage for driving the discharge control circuit. The discharge unit includes a first node having a voltage correlated with a voltage to be supplied to the discharge element. The first voltage generation circuit controls the first driving voltage based on a comparison result of the voltage of the first node and a first reference voltage supplied from outside of the liquid discharge head substrate.
    Type: Application
    Filed: July 6, 2015
    Publication date: February 11, 2016
    Inventors: Masanori Shibata, Tatsuhito Goden, Kazunari Fujii
  • Patent number: 9227401
    Abstract: A printing element substrate, comprising a plurality of units configured to print on a printing medium based on print data, each of the plurality of units, including a printing element configured to print on the printing medium, a first transistor configured to operate as a source follower upon receiving a voltage at a gate terminal of the first transistor, and supply a current to the printing element, and a second transistor configured to control supply of the current to the printing element in response to a control signal input to a gate terminal of the second transistor.
    Type: Grant
    Filed: May 29, 2014
    Date of Patent: January 5, 2016
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kazunari Fujii, Masanobu Ohmura
  • Patent number: 9205646
    Abstract: A liquid discharging substrate includes multiple heaters and multiple drive elements. A first wiring portion electrically connects the multiple heaters and a first electrode. A second wiring portion electrically connects the multiple drive elements and a second electrode. The first wiring portion includes multiple conductive members. The conductive members are connected to the first electrode and respective heaters. An insulating portion is disposed between each of the conductive members. The second wiring portion includes a common conductive member connected to the multiple drive elements and the second electrode.
    Type: Grant
    Filed: May 7, 2015
    Date of Patent: December 8, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventor: Kazunari Fujii
  • Patent number: 9205649
    Abstract: A substrate includes first and second power supply lines, and units. Each unit includes common transistor, discharge elements and individual transistors. One of source and drain of the common transistor is connected to the first power supply line, first nodes of the discharge elements are connected to other of the source and drain, one of source and drain of each individual transistor is connected to a second node of the discharge element, the other is connected to the second power supply line. Channel of the common transistor is wider than those of the individual transistors. Arrangement direction of the units and arrangement direction of the discharge elements are first direction, the first and second power supply lines extend in the first direction, and the second power supply line is wider than that of the first power supply line.
    Type: Grant
    Filed: April 29, 2015
    Date of Patent: December 8, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventors: Wataru Endo, Masanobu Ohmura, Kazunari Fujii, Tatsuhito Goden
  • Publication number: 20150328888
    Abstract: A substrate includes first and second power supply lines, and units. Each unit includes common transistor, discharge elements and individual transistors. One of source and drain of the common transistor is connected to the first power supply line, first nodes of the discharge elements are connected to other of the source and drain, one of source and drain of each individual transistor is connected to a second node of the discharge element, the other is connected to the second power supply line. Channel of the common transistor is wider than those of the individual transistors. Arrangement direction of the units and arrangement direction of the discharge elements are first direction, the first and second power supply lines extend in the first direction, and the second power supply line is wider than that of the first power supply line.
    Type: Application
    Filed: April 29, 2015
    Publication date: November 19, 2015
    Inventors: Wataru Endo, Masanobu Ohmura, Kazunari Fujii, Tatsuhito Goden
  • Publication number: 20150321471
    Abstract: A liquid discharging substrate includes multiple heaters and multiple drive elements. A first wiring portion electrically connects the multiple heaters and a first electrode. A second wiring portion electrically connects the multiple drive elements and a second electrode. The first wiring portion includes multiple conductive members. The conductive members are connected to the first electrode and respective heaters. An insulating portion is disposed between each of the conductive members. The second wiring portion includes a common conductive member connected to the multiple drive elements and the second electrode.
    Type: Application
    Filed: May 7, 2015
    Publication date: November 12, 2015
    Inventor: Kazunari Fujii
  • Publication number: 20150314597
    Abstract: A liquid discharge substrate according to an embodiment of the present invention includes a plurality of heating elements, a plurality of driving elements, a signal supplying unit which supplies a control signal used to control the plurality of driving elements, and a plurality of delay circuits which delay the control signal. A delay amount of a first delay circuit is different from a delay amount of a second delay circuit.
    Type: Application
    Filed: April 27, 2015
    Publication date: November 5, 2015
    Inventors: Masanori Shibata, Kazunari Fujii, Takaaki Yamaguchi
  • Publication number: 20150283807
    Abstract: A semiconductor device for a liquid discharge head is provided. The device includes first and second electrodes, discharge elements configured to give energy to a liquid, first switching elements configured to electrically connect first terminals of discharge elements to the first electrode, and including one or more first switching elements each connected to two or more discharge elements, and second switching elements configured to electrically connect second terminals of the plurality of discharge elements to the second electrode, and including one or more second switching element each connected to two or more discharge elements. Two or more discharge elements connected to a same second switching element are connected to different first switching elements.
    Type: Application
    Filed: March 19, 2015
    Publication date: October 8, 2015
    Inventors: Kazunari Fujii, Masanobu Ohmura
  • Publication number: 20150273824
    Abstract: A liquid discharge substrate includes a plurality of discharge elements disposed on a substrate, a first transistor electrically connected to the plurality of discharge elements, and a plurality of second transistors. The first transistor is disposed between the plurality of discharge elements and the plurality of second transistors.
    Type: Application
    Filed: March 26, 2015
    Publication date: October 1, 2015
    Inventors: Kazunari Fujii, Masanobu Ohmura, Tatsuhito Goden, Wataru Endo
  • Patent number: 9085135
    Abstract: A semiconductor device for controlling discharge of a liquid includes a power supply terminal, a ground terminal, driving portions arranged along a straight line between the power supply terminal and the ground terminal to discharge a liquid, a power supply line extending along the straight line from the power supply terminal to supply a power supply voltage to the driving portions, and a ground line extending along the straight line from the ground terminal to supply a ground voltage to the driving portions. A width of the power supply line in a direction perpendicular to the straight line continuously or gradually decreases away from the power supply terminal, and a width of the ground line in the direction continuously or gradually decreases away from the ground terminal.
    Type: Grant
    Filed: October 30, 2013
    Date of Patent: July 21, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kazunari Fujii, Hiroaki Kameyama
  • Publication number: 20150138279
    Abstract: A printhead substrate comprising a plurality of printing portions and a plurality of ink supply ports, wherein the plurality of printing portions are divided into a plurality of groups, and the plurality of ink supply ports are arranged so as to correspond to the plurality of groups respectively, the printhead substrate also comprises a plurality of first voltage wiring portions provided in correspondence with the plurality of groups, and each first voltage wiring portion includes a first wiring pattern configured to connect the first terminals of the respective printing portions in the corresponding group with each other, and a second wiring pattern connected to the first wiring pattern and arranged between an ink supply port in the corresponding group and its neighboring ink supply port.
    Type: Application
    Filed: October 20, 2014
    Publication date: May 21, 2015
    Inventors: Kazunari Fujii, Masanobu Ohmura
  • Publication number: 20140375711
    Abstract: A printing element substrate, comprising a plurality of units configured to print on a printing medium based on print data, each of the plurality of units, including a printing element configured to print on the printing medium, a first transistor configured to operate as a source follower upon receiving a voltage at a gate terminal of the first transistor, and supply a current to the printing element, and a second transistor configured to control supply of the current to the printing element in response to a control signal input to a gate terminal of the second transistor.
    Type: Application
    Filed: May 29, 2014
    Publication date: December 25, 2014
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Kazunari Fujii, Masanobu Ohmura
  • Patent number: 8869622
    Abstract: A technology that makes it possible to adjust, through processing, an output signal sent from a capacitive electromechanical transducer apparatus such as a CMUT upon reception of an elastic wave is provided. A capacitive electromechanical transducer apparatus 100 includes cells 102 that include a first electrode 104 and second electrodes 106, each of which is disposed so as to be opposite the first electrode 104 with a cavity 105 therebetween. In the capacitive electromechanical transducer apparatus 100, at least one of the cells 102 includes a processed unit on which at least either addition of a material or removal of a material is performed as processing.
    Type: Grant
    Filed: August 5, 2010
    Date of Patent: October 28, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kazunari Fujii, Takahiro Akiyama, Ayako Kato
  • Patent number: 8807708
    Abstract: A semiconductor device including segments, a power supply pad and conductive patterns is provided. Each segment includes driving units for discharging a liquid. Each driving unit includes a driving circuit and an element driven by the driving circuit to apply discharging energy to the liquid. The conductive pattern includes a first conductive portion connected to the power supply pad, a second rectangular conductive portion, a third conductive portion connected to the driving portions, and a connection portion which connects the second and third conductive portions. These conductive portions elongate in a first direction. In a second direction, a length of the second conductive portion is larger than a length of the first conductive portion. The second conductive portion is connected to the first conductive portion at a first corner and the connection portion at a second corner diagonal to the first corner.
    Type: Grant
    Filed: September 6, 2013
    Date of Patent: August 19, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventor: Kazunari Fujii
  • Patent number: 8777356
    Abstract: A fluid discharge head semiconductor device, comprising a terminal unit including first pad group including a plurality of pads, a processing unit configured to process input information from the first pad group, a printing unit including a plurality of printing elements configured to discharge a printing material in accordance with a result of the processing, and an inspection output unit including second pad group including at least one pad and an output buffer unit, wherein the processing unit outputs information on an inspection of an operation to the inspection output unit, and the inspection output unit drives the output buffer unit to output the information to the second pad group when performing an inspection, and suppresses the driving of the output buffer unit when performing printing.
    Type: Grant
    Filed: October 22, 2012
    Date of Patent: July 15, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kazunari Fujii, Masanobu Oomura
  • Publication number: 20140139590
    Abstract: A semiconductor device includes unit circuits arranged in a first direction, a bonding pad, and electrically conductive patterns configured to connect the unit circuits to the bonding pad. Each of the electrically conductive patterns includes a first portion connected to the bonding pad and extending in the first direction, and a second portion connected to the corresponding unit circuit. The electrically conductive patterns include a first type pattern in which the first portion is positioned on a first side of the second portion in a view from the first direction, and a second type pattern in which the first portion is positioned on a second side, which is opposite to the first side, of the second portion in a view from the first direction.
    Type: Application
    Filed: October 30, 2013
    Publication date: May 22, 2014
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Tatsuya Suzuki, Kazunari Fujii
  • Publication number: 20140132655
    Abstract: A semiconductor device for controlling discharge of a liquid includes a power supply terminal, a ground terminal, driving portions arranged along a straight line between the power supply terminal and the ground terminal to discharge a liquid, a power supply line extending along the straight line from the power supply terminal to supply a power supply voltage to the driving portions, and a ground line extending along the straight line from the ground terminal to supply a ground voltage to the driving portions. A width of the power supply line in a direction perpendicular to the straight line continuously or gradually decreases away from the power supply terminal, and a width of the ground line in the direction continuously or gradually decreases away from the ground terminal.
    Type: Application
    Filed: October 30, 2013
    Publication date: May 15, 2014
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Kazunari Fujii, Hiroaki Kameyama