Patents by Inventor Tatsuo Furukawa
Tatsuo Furukawa 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: 9579888Abstract: A substrate includes a first and a second element arrays in each of which a plurality of elements is arrayed along a first direction of the substrate, a first and a second pad arrays in which a plurality of pads is arrayed along respective two opposite sides extending along a second direction of the substrate, a reception circuit configured to receive data for driving the elements, a data circuit configured to generate data corresponding to the first and the second element array, respectively based on the received data, a signal generation circuit configured to generate a period signal for determining a drive period of the elements based on the generated data, and an output circuit configured to output information related to the substrate.Type: GrantFiled: December 10, 2010Date of Patent: February 28, 2017Assignee: CANON KABUSHIKI KAISHAInventors: Tomoko Kudo, Tatsuo Furukawa, Nobuyuki Hirayama, Ryo Kasai, Kimiyuki Hayasaki
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Patent number: 9138992Abstract: Data transfer is realized to support a high-speed and complex driving control of the driving element. A driving device includes a driving unit configured to supply a driving element with a pulse signal that determines a driving period to drive the driving element, an input unit configured to receive, in synchronization with a trigger signal, a data signal containing first information, second information, a first flag and a second flag that determine a waveform of the pulse signal, a first setting unit configured to set in the driving unit the first information that is input to the input unit, a retaining unit configured to read and retain the second information on the basis of the first flag, and a second setting unit configured to set in the driving unit the second information that is retained in the retaining unit on the basis of the second flag.Type: GrantFiled: October 8, 2013Date of Patent: September 22, 2015Assignee: CANON KABUSHIKI KAISHAInventors: Ryo Kasai, Nobuyuki Hirayama, Tatsuo Furukawa, Kimiyuki Hayasaki, Hisao Terajima
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Patent number: 9096058Abstract: A device includes a first element substrate and a second element substrate for driving a driving element; a first signal input unit connected to an input terminal of the first element substrate; a second signal input unit connected to an input terminal of the second element substrate; and a signal output unit. Each of the first and second element substrates includes a driving element, a first signal generation unit configured to output a first signal, a second signal generation unit configured to output a second signal, an input terminal, an output terminal, and a selection unit configured to receive a signal from the first and the second signal generation units, select one of a state of the first signal, a state of the second signal, and a high-impedance state on the basis of the selection signal input from the input terminal, and output the state to the output terminal.Type: GrantFiled: July 12, 2013Date of Patent: August 4, 2015Assignee: CANON KABUSHIKI KAISHAInventors: Tatsuo Furukawa, Nobuyuki Hirayama, Ryo Kasai, Shinichi Omo, Hiroyuki Nakamura, Kimiyuki Hayasaki
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Patent number: 8876242Abstract: A print head is provided that well preserves ink characteristics upon printing by way of performing effective ink preliminary heating. The print head has heaters and ejection openings formed at locations corresponding to the heaters. Viewed from the side from which ink is ejected, a sub-heater is established in the print head between the ink supply port and the print elements so as to surround the ink supply port.Type: GrantFiled: April 20, 2010Date of Patent: November 4, 2014Assignee: Canon Kabushiki KaishaInventors: Yuuji Tamaru, Yoshiyuki Imanaka, Koichi Omata, Hideo Tamura, Takaaki Yamaguchi, Kousuke Kubo, Ryoji Oohashi, Toshio Negishi, Tatsuo Furukawa, Nobuyuki Hirayama, Ryo Kasai, Tomoko Kudo
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Patent number: 8864276Abstract: This invention is directed to real time detection of occurrence of a transfer error and feedback of the detection result to a printing apparatus in consideration of a possible risk that a signal transfer error occurs on a transfer path that becomes longer as the printhead is elongated. To accomplish this, in a printhead configured by cascade-connecting a plurality of element substrates, information of a transfer error detected in real time in each element substrate during transfer of a print data signal is output to an element substrate on the next stage by taking account of information input from an element substrate on the preceding stage. Information containing pieces of information from all element substrates is output from an element substrate on the final stage.Type: GrantFiled: December 9, 2010Date of Patent: October 21, 2014Assignee: Canon Kabushiki KaishaInventors: Hidenori Yamato, Tatsuo Furukawa, Nobuyuki Hirayama, Ryo Kasai, Kimiyuki Hayasaki, Shinji Takagi
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Patent number: 8740350Abstract: An inkjet recording head substrate having an electrothermal transducer for generating thermal energy used to discharge ink and a drive element for driving the electrothermal transducer mounted thereon includes a first circuit portion for outputting selection signals for selecting the electrothermal transducer to be driven at a amplitude level of a second voltage higher than a first voltage based on an input signal of the amplitude level of the first voltage, a second circuit portion for inputting the selection signals from the first circuit portion and controlling the drive element corresponding to the electrothermal transducer to be driven based on the selection signals subject to the second voltage, and a plurality of signal lines for transmitting the selection signals between the first and second circuit portions.Type: GrantFiled: June 10, 2009Date of Patent: June 3, 2014Assignee: Canon Kabushiki KaishaInventors: Masataka Sakurai, Tatsuo Furukawa, Hidenori Watanabe, Nobuyuki Hirayama, Ryo Kasai
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Patent number: 8672452Abstract: A liquid discharge head includes a liquid discharge head substrate including a discharge port through which a liquid is discharged, and a plurality of energy generating elements that generate energy for discharging the liquid from the discharge port, and a circuit board having flexibility including a pair of differential transmission lines for transmitting differential transmission signals used as logical signals for driving the energy generating elements, to the liquid discharge head substrate, and a voltage supply line for supplying a voltage applied to the energy generating elements to obtain the energy, to the liquid discharge head substrate, wherein the pair of differential transmission lines is provided on one surface of the circuit board, and the voltage supply line is provided on the other surface of the circuit board, which is on a reverse side of the one surface.Type: GrantFiled: May 11, 2011Date of Patent: March 18, 2014Assignee: Canon Kabushiki KaishaInventors: Kimiyuki Hayasaki, Takamitsu Tokuda, Kengo Umeda, Nobuyuki Hirayama, Takaaki Yamaguchi, Yoshiyuki Imanaka, Tatsuo Furukawa
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Publication number: 20140035977Abstract: Data transfer is realized to support a high-speed and complex driving control of the driving element. A driving device includes a driving unit configured to supply a driving element with a pulse signal that determines a driving period to drive the driving element, an input unit configured to receive, in synchronization with a trigger signal, a data signal containing first information, second information, a first flag and a second flag that determine a waveform of the pulse signal, a first setting unit configured to set in the driving unit the first information that is input to the input unit, a retaining unit configured to read and retain the second information on the basis of the first flag, and a second setting unit configured to set in the driving unit the second information that is retained in the retaining unit on the basis of the second flag.Type: ApplicationFiled: October 8, 2013Publication date: February 6, 2014Applicant: CANON KABUSHIKI KAISHAInventors: Ryo Kasai, Nobuyuki Hirayama, Tatsuo Furukawa, Kimiyuki Hayasaki, Hisao Terajima
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Patent number: 8632150Abstract: A printhead substrate comprises: a plurality of printing elements arrayed in a predetermined direction; first logic circuits arranged in correspondence with respective groups each assigned to a predetermined number of adjacent printing elements, and configured to select a printing element to be driven from the printing elements belonging to each of the groups; driving circuits configured to drive the printing elements based on signals output from the first logic circuits; second logic circuits configured to supply externally input printing data to the first logic circuits corresponding to the respective groups; and electricity storage units arranged in the respective groups, connected to a power supply line for supplying power to at least one of the first logic circuits, the second logic circuits, and the driving circuits, and configured to store charges in accordance with a voltage applied through the power supply line.Type: GrantFiled: November 9, 2010Date of Patent: January 21, 2014Assignee: Canon Kabushiki KaishaInventors: Ryo Kasai, Nobuyuki Hirayama, Tomoko Kudo, Tatsuo Furukawa
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Publication number: 20130300789Abstract: A device includes a first element substrate and a second element substrate for driving a driving element; a first signal input unit connected to an input terminal of the first element substrate; a second signal input unit connected to an input terminal of the second element substrate; and a signal output unit. Each of the first and second element substrates includes a driving element, a first signal generation unit configured to output a first signal, a second signal generation unit configured to output a second signal, an input terminal, an output terminal, and a selection unit configured to receive a signal from the first and the second signal generation units, select one of a state of the first signal, a state of the second signal, and a high-impedance state on the basis of the selection signal input from the input terminal, and output the state to the output terminal.Type: ApplicationFiled: July 12, 2013Publication date: November 14, 2013Inventors: Tatsuo Furukawa, Nobuyuki Hirayama, Ryo Kasai, Shinichi Omo, Hiroyuki Nakamura, Kimiyuki Hayasaki
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Patent number: 8579399Abstract: Data transfer is realized to support a high-speed and complex driving control of the driving element. A driving device includes a driving unit configured to supply a driving element with a pulse signal that determines a driving period to drive the driving element, an input unit configured to receive, in synchronization with a trigger signal, a data signal containing first information, second information, a first flag and a second flag that determine a waveform of the pulse signal, a first setting unit configured to set in the driving unit the first information that is input to the input unit, a retaining unit configured to read and retain the second information on the basis of the first flag, and a second setting unit configured to set in the driving unit the second information that is retained in the retaining unit on the basis of the second flag.Type: GrantFiled: December 9, 2010Date of Patent: November 12, 2013Assignee: Canon Kabushiki KaishaInventors: Ryo Kasai, Nobuyuki Hirayama, Tatsuo Furukawa, Kimiyuki Hayasaki, Hisao Terajima
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Patent number: 8508565Abstract: A device includes a first element substrate and a second element substrate for driving a driving element; a first signal input unit connected to an input terminal of the first element substrate; a second signal input unit connected to an input terminal of the second element substrate; and a signal output unit. Each of the first and second element substrates includes a driving element, a first signal generation unit configured to output a first signal, a second signal generation unit configured to output a second signal, an input terminal, an output terminal, and a selection unit configured to receive a signal from the first and the second signal generation units, select one of a state of the first signal, a state of the second signal, and a high-impedance state on the basis of the selection signal input from the input terminal, and output the state to the output terminal.Type: GrantFiled: February 14, 2013Date of Patent: August 13, 2013Assignee: Canon Kabushiki KaishaInventors: Tatsuo Furukawa, Nobuyuki Hirayama, Ryo Kasai, Shinichi Omo, Hiroyuki Nakamura, Kimiyuki Hayasaki
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Patent number: 8400484Abstract: A device includes a first element substrate and a second element substrate for driving a driving element; a first signal input unit connected to an input terminal of the first element substrate; a second signal input unit connected to an input terminal of the second element substrate; and a signal output unit. Each of the first and second element substrates includes a driving element, a first signal generation unit configured to output a first signal, a second signal generation unit configured to output a second signal, an input terminal, an output terminal, and a selection unit configured to receive a signal from the first and the second signal generation units, select one of a state of the first signal, a state of the second signal, and a high-impedance state on the basis of the selection signal input from the input terminal, and output the state to the output terminal.Type: GrantFiled: December 9, 2010Date of Patent: March 19, 2013Assignee: Canon Kabushiki KaishaInventors: Tatsuo Furukawa, Nobuyuki Hirayama, Ryo Kasai, Shinichi Omo, Hiroyuki Nakamura, Kimiyuki Hayasaki
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Patent number: 8374093Abstract: A monitor terminal transmits a monitor request command to monitor a repeater station designated by an operator to a monitor server via the Internet. The monitor server detects a monitor station located in the communication range of the designated repeater station from the content of the received monitor request command, and transmits a monitor instruction command to the detected monitor station via the Internet. The monitor station intercepts a radio signal during transmission from the repeater station to a radio communication device or vice versa. Upon reception of the monitor instruction command, the monitor station transmits the intercepted radio signal as monitor data to the monitor server. The monitor server transfers the monitor data to the monitor terminal. Upon reception of the monitor data transferred from the monitor server, the monitor terminal radio-transmits the received monitor data using a radio wave format receivable by the radio communication device.Type: GrantFiled: November 17, 2009Date of Patent: February 12, 2013Assignee: Icom IncorporatedInventors: Kiyoshi Sakurai, Kazuyuki Seri, Tatsuo Furukawa
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Patent number: 8371668Abstract: A recording element substrate which is provided with a first recording element group and a second recording element group, each group including a plurality of recording elements.Type: GrantFiled: November 9, 2009Date of Patent: February 12, 2013Assignee: Canon Kabushiki KaishaInventors: Ryo Kasai, Tatsuo Furukawa, Nobuyuki Hirayama, Tomoko Kudo
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Patent number: 8342620Abstract: According to an aspect of the present invention, a high-resolution, small-size, low-cost driving device includes a clock signal generating unit configured to receive a first clock signal of a differential signaling system and generate a second clock signal, an input unit configured to input a data signal which includes first information and second information, a first timing generating unit configured to select an edge of the second clock signal based on the first information and to generate a first signal by counting occurrences of the selected edge a second timing generating unit configured to select edge of the second clock signal based on the second information and to generate a second signal by counting occurrences of the selected edge, a logical circuit configured to generate a pulse signal based on the first and second signals, and a driving element configured to drive a driven element using the pulse signal.Type: GrantFiled: December 10, 2010Date of Patent: January 1, 2013Assignee: Canon Kabushiki KaishaInventors: Ryo Kasai, Nobuyuki Hirayama, Tatsuo Furukawa, Kimiyuki Hayasaki
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Patent number: 8322809Abstract: A recording head having a plurality of recording elements that are grouped into a plurality of blocks and ejecting ink by driving the recording elements in a time-divisional manner includes driving units configured to drive the recording elements, an input unit configured to receive an enable signal that defines a period during which the driving of the recording elements is enabled at one ink ejection, and a control unit configured to control the time-divisional driving by the driving units on the basis of pulses detected during the period defined by the enable signal received by the input unit.Type: GrantFiled: June 26, 2009Date of Patent: December 4, 2012Assignee: Canon Kabushiki KaishaInventors: Tomoko Kudo, Tatsuo Furukawa, Nobuyuki Hirayama, Ryo Kasai, Tomoyuki Inoue
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Patent number: 8226190Abstract: A recording element substrate includes a recording element, a first voltage conversion circuit configured to receive a first control signal and to output the first control signal with an increased amplitude, a second voltage conversion circuit configured to receive a second control signal and to output the second control signal with an increased amplitude, a PMOS transistor connected to one end of the recording element, and an NMOS transistor connected to the other end of the recording element, wherein the PMOS transistor has a gate connected to an output of the first voltage conversion circuit, and the NMOS transistor has a gate connected to an output of the second voltage conversion circuit.Type: GrantFiled: November 25, 2009Date of Patent: July 24, 2012Assignee: Canon Kabushiki KaishaInventors: Nobuyuki Hirayama, Tatsuo Furukawa, Masataka Sakurai, Ryo Kasai, Tomoko Kudo
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Publication number: 20110310210Abstract: A device includes a first element substrate and a second element substrate for driving a driving element; a first signal input unit connected to an input terminal of the first element substrate; a second signal input unit connected to an input terminal of the second element substrate; and a signal output unit. Each of the first and second element substrates includes a driving element, a first signal generation unit configured to output a first signal, a second signal generation unit configured to output a second signal, an input terminal, an output terminal, and a selection unit configured to receive a signal from the first and the second signal generation units, select one of a state of the first signal, a state of the second signal, and a high-impedance state on the basis of the selection signal input from the input terminal, and output the state to the output terminal.Type: ApplicationFiled: December 9, 2010Publication date: December 22, 2011Applicant: CANON KABUSHIKI KAISHAInventors: Tatsuo Furukawa, Nobuyuki Hirayama, Ryo Kasai, Shinichi Omo, Hiroyuki Nakamura, Kimiyuki Hayasaki
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Patent number: RE44825Abstract: The present invention is directed to resolve the noise problem with the ink in an ink jet head without changing the substrate manufacturing process for the ink jet head, that is, increasing the cost on the manufacture, and without needs of disposing a noise countermeasure component on the side of the printer main device, or making the design change for the countermeasure. The present invention is characterized in that to prevent malfunction from arising by the noise, a hysteresis circuit to provide different input data threshold values upon rising and falling is provided on an input portion of the signal for a drive control logic system such as a drive input signal for a shift register and a latch circuit on the same substrate as that of the heating elements, the driver and the drive control logic circuit, utilizing a diffusion layer constituting a driver.Type: GrantFiled: December 6, 2011Date of Patent: April 8, 2014Assignee: Canon Kabushiki KaishaInventors: Yoshiyuki Imanaka, Tatsuo Furukawa, Kimiyuki Hayasaki, Hiroyuki Maru, Masaaki Izumida