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公开(公告)号：US12011922B2
公开(公告)日：2024-06-18
申请号：US17313595
申请日：2021-05-06
Applicant: CANON KABUSHIKI KAISHA
Inventor： Hiroyasu Nomura , Mineo Shimotsusa
CPC classification number: B41J2/04563 , B41J2/0458 , B41J2/14153
Abstract: A print element substrate, comprising a base, a heater provided on the base and configured to generate heat used to discharge ink, a flow path member, which forms an ink flow path, configured to form, together with the base, a bubbling chamber in which the ink is bubbled by the heat of the heater provided in a bottom surface of the bubbling chamber, and a temperature sensor capable of detecting a temperature of the bubbling chamber, the temperature sensor being formed of the same material as the heater and provided in the same layer as the heater on the base.
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公开(公告)号：US20210370669A1
公开(公告)日：2021-12-02
申请号：US17242747
申请日：2021-04-28
Applicant: CANON KABUSHIKI KAISHA
Inventor： Mineo Shimotsusa , Hiroyasu Nomura
Abstract: A liquid discharge head, comprising an insulating member arranged on a substrate, a resistive heating element arranged in the insulating member and configured to generate thermal energy used to discharge a liquid, a bubble chamber provided above the insulating member and configured to generate bubbles of the liquid based on the thermal energy, and a temperature detection element capable of detecting a temperature in the bubble chamber, wherein the temperature detection element is arranged between the resistive heating element and the bubble chamber and in a conductive layer closest to the bubble chamber in a plurality of conductive layers provided with respect to the insulating member.
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公开(公告)号：US12134269B2
公开(公告)日：2024-11-05
申请号：US17935025
申请日：2022-09-23
Applicant: CANON KABUSHIKI KAISHA
Inventor： Hiroyasu Nomura
Abstract: A liquid ejecting apparatus with a recording element substrate including an ejection port that ejects liquid, and a heating element that heats the liquid in order to eject the liquid from the ejection port; and at least a first temperature detecting element and a second temperature detecting element. The first temperature detecting element and the second temperature detecting element are formed at target positions centered on the center of the heating element when the recording element substrate is viewed in plan view.
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公开(公告)号：US11485135B2
公开(公告)日：2022-11-01
申请号：US17318492
申请日：2021-05-12
Applicant: CANON KABUSHIKI KAISHA
Inventor： Hiroyasu Nomura
Abstract: A print element substrate, comprising a plurality of heating elements, a plurality of detection elements, each configured to detect a temperature of a corresponding heating element, a first current generation unit, a second current generation unit, and a signal output unit, wherein one of the first and second current generation units supplies a current to a first detection element, the other supplies a current to a second detection element, and the signal output unit outputs a signal according to a potential difference between one terminal of the first detection element on a side where a potential variation occurs upon supply of the current and one terminal of the second detection element on a side where a potential variation occurs upon supply of the current.
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公开(公告)号：US11027543B2
公开(公告)日：2021-06-08
申请号：US16701420
申请日：2019-12-03
Applicant: CANON KABUSHIKI KAISHA
Inventor： Takatsugu Moriya , Masaki Oikawa , Nobuyuki Hirayama , Hiroyasu Nomura
Abstract: A printing apparatus measures a temperature of an electrothermal transducer by a corresponding temperature detection element, detects, based on the measured temperature, a peak voltage which indicates a point of change, from a state where ink is discharged normally from a printhead to a state where the ink is not discharged from the printhead, and compares the peak voltage with a threshold value. The measurement, detection, and comparison are repeated until the peal voltage becomes equal to or more than the threshold value. Energy supplied to the electrothermal transducer at a time in which the peak voltage is determined to be equal to or more than the threshold is determined to be minimum discharge energy.
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Patent Agency Ranking
公开(公告)号：US20210370670A1
公开(公告)日：2021-12-02
申请号：US17313595
申请日：2021-05-06
Applicant: CANON KABUSHIKI KAISHA
Inventor： Hiroyasu Nomura , Mineo Shimotsusa
Abstract: A print element substrate, comprising a base, a heater provided on the base and configured to generate heat used to discharge ink, a flow path member, which forms an ink flow path, configured to form, together with the base, a bubbling chamber in which the ink is bubbled by the heat of the heater provided in a bottom surface of the bubbling chamber, and a temperature sensor capable of detecting a temperature of the bubbling chamber, the temperature sensor being formed of the same material as the heater and provided in the same layer as the heater on the base.
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公开(公告)号：US10960665B2
公开(公告)日：2021-03-30
申请号：US16361365
申请日：2019-03-22
Applicant: CANON KABUSHIKI KAISHA
Inventor： Hiroyasu Nomura , Nobuyuki Hirayama
Abstract: An element substrate provided in a printhead includes a heater configured to heat ink and discharge the ink from a nozzle, a temperature sensor provided in correspondence with the heater, an electric current source configured to energize the temperature sensor with an electric current based on an electric current value specified by an externally input first signal, and a determination circuit configured to determine an ink discharge status of the nozzle based on a voltage output from the temperature sensor energized with the electric current and a threshold voltage specified by an externally input second signal, and output a determination result signal.
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公开(公告)号：US20200180308A1
公开(公告)日：2020-06-11
申请号：US16701420
申请日：2019-12-03
Applicant: CANON KABUSHIKI KAISHA
Inventor： Takatsugu Moriya , Masaki Oikawa , Nobuyuki Hirayama , Hiroyasu Nomura
IPC: B41J2/045
Abstract: A printing apparatus measures a temperature of an electrothermal transducer by a corresponding temperature detection element, detects, based on the measured temperature, a peak voltage which indicates a point of change, from a state where ink is discharged normally from a printhead to a state where the ink is not discharged from the printhead, and compares the peak voltage with a threshold value. The measurement, detection, and comparison are repeated until the peal voltage becomes equal to or more than the threshold value. Energy supplied to the electrothermal transducer at a time in which the peak voltage is determined to be equal to or more than the threshold is determined to be minimum discharge energy.
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公开(公告)号：US10308021B2
公开(公告)日：2019-06-04
申请号：US15822729
申请日：2017-11-27
Applicant: CANON KABUSHIKI KAISHA
Inventor： Hiroyasu Nomura , Nobuyuki Hirayama
Abstract: A print element substrate that includes a plurality of heaters and a plurality of temperature sensors provided in correspondence with a plurality of nozzles, comprises: a selecting unit that selects one temperature sensor from the plurality of temperature sensors and output a temperature signal; a determining unit that determines a discharge state of the nozzle based on the temperature signal output by the selecting unit; an outputting unit that, based on a determination result output from the determining unit, externally outputs a signal indicating the discharge state of the nozzle corresponding to the selected temperature sensor; and a masking unit that, in accordance with a change in selection of the temperature sensor by the selecting unit, masks the determination result output from the determining unit to the outputting unit during a predetermined time from a timing of the change.
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公开(公告)号：US20230101931A1
公开(公告)日：2023-03-30
申请号：US17935025
申请日：2022-09-23
Applicant: CANON KABUSHIKI KAISHA
Inventor： Hiroyasu Nomura
Abstract: A liquid ejecting apparatus with a recording element substrate including an ejection port that ejects liquid, and a heating element that heats the liquid in order to eject the liquid from the ejection port; and at least a first temperature detecting element and a second temperature detecting element. The first temperature detecting element and the second temperature detecting element are formed at target positions centered on the center of the heating element when the recording element substrate is viewed in plan view.
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