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公开(公告)号：US09475282B2
公开(公告)日：2016-10-25
申请号：US14459725
申请日：2014-08-14
Applicant: Seiko Epson Corporation
Inventor： Toru Kashimura , Hiroshi Sugita
CPC classification number: B41J2/04541 , B41J2/04581 , B41J2/04586 , B41J2/0459 , B41J2/04591 , B41J2/04593 , B41J2/04596 , B41J2/155 , B41J2/1612 , B41J2202/03 , H01F27/24 , H01F27/2823 , H03K7/08
Abstract: A liquid ejecting apparatus includes a signal modulation section that causes an original drive signal to be pulse-modulated to generate a modulation signal, a signal amplification section that amplifies the modulation signal to generate an amplification modulation signal, a coil that smooths the amplification modulation signal to generate a drive signal, a piezoelectric element that deforms when the drive signal is applied thereto, a cavity that expands or contracts due to a deformation of the piezoelectric element, and a nozzle that communicates with the cavity and ejects a liquid in accordance with an increase/decrease of a pressure inside the cavity. The coil is a ferrite core-type coil, and a core gap is provided to be equal to or wider than 1.1 mm.
Abstract translation: 液体喷射装置包括使原始驱动信号被脉冲调制以产生调制信号的信号调制部分，放大调制信号以产生放大调制信号的信号放大部分，使放大调制信号平滑的线圈 以产生驱动信号，当施加驱动信号时变形的压电元件，由于压电元件的变形而膨胀或收缩的空腔，以及与空腔连通并喷射液体的喷嘴，根据 增加/减少腔内的压力。 线圈是铁氧体磁芯型线圈，并且芯间隙被设置成等于或大于1.1mm。
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公开(公告)号：US12257834B2
公开(公告)日：2025-03-25
申请号：US18192318
申请日：2023-03-29
Applicant: SEIKO EPSON CORPORATION
Inventor： Toru Kashimura
Abstract: A liquid discharge device in which an inter-wiring region between a first wiring through which a first drive signal, and a second wiring through which a second drive signal propagates includes a wide inter-wiring region in which an inter-wiring distance between the first wiring and the second wiring is larger than a sum of a wire width of a fourth wiring and a minimum diameter of a via wiring, and a narrow inter-wiring region in which the inter-wiring distance is smaller than the sum of the wire width of the fourth wiring and the minimum diameter of the via wiring, and larger than a wire width of the via wiring, and a third wiring is not located in the narrow inter-wiring region between a virtual line coupling a first terminal and a second terminal, and the wide inter-wiring region, in the inter-wiring region of a first wiring layer.
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公开(公告)号：US10272672B2
公开(公告)日：2019-04-30
申请号：US15837135
申请日：2017-12-11
Applicant: SEIKO EPSON CORPORATION
Inventor： Toru Kashimura
Abstract: There is provided a head unit including: a first board; a driving module, and a second board; and a flexible wiring board which connects the first board and the second board to each other, in which the flexible wiring board includes a first wiring layer, a second wiring layer which opposes the first wiring layer, a first output terminal which is connected to a first end of the driving element, a second output terminal which is connected to a second end of the driving element, a first wiring which is connected to the first output terminal, a second wiring which is connected to the second output terminal, and a through-hole which connects the first wiring layer and the second wiring layer, in which the second wiring is provided on the second wiring layer, and in which the second wiring and the second output terminal are connected to each other.
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公开(公告)号：US09186888B2
公开(公告)日：2015-11-17
申请号：US14456271
申请日：2014-08-11
Applicant: Seiko Epson Corporation
Inventor： Toru Kashimura
CPC classification number: B41J2/04541 , B41J2/04551 , B41J2/04568 , B41J2/04581 , B41J2/04588 , B41J2/0459 , B41J2/04593 , B41J2/04596 , B41J2/14274 , B41J2/155
Abstract: There is provided a liquid discharging apparatus including: an original drive signal generation unit which generates an original drive signal; a signal modulation unit which modulates the original drive signal to generate a modulation signal; a first signal amplifying unit which amplifies the modulation signal to generate a first amplified modulation signal; a second signal amplifying unit which amplifies the modulation signal to generate a second amplified modulation signal; an amplification control unit which controls operations of the first signal amplifying unit and the second signal amplifying unit; a signal conversion unit which converts the first amplified modulation signal and the second amplified modulation signal into a drive signal; a plurality of piezoelectric elements which is deformed by the drive signal; a plurality of cavities which expands or contracts in accordance with the deformation of the plurality of piezoelectric elements; a plurality of nozzles which communicates with each of cavities.
Abstract translation: 提供了一种液体排放装置，包括：原始驱动信号生成单元，其生成原始驱动信号; 信号调制单元，其调制原始驱动信号以产生调制信号; 第一信号放大单元，其放大所述调制信号以产生第一放大调制信号; 第二信号放大单元，其放大所述调制信号以产生第二放大调制信号; 放大控制单元，其控制第一信号放大单元和第二信号放大单元的操作; 信号转换单元，其将第一放大调制信号和第二放大调制信号转换为驱动信号; 由驱动信号变形的多个压电元件; 多个空腔，其根据多个压电元件的变形而膨胀或收缩; 与每个空腔连通的多个喷嘴。
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公开(公告)号：US12202264B2
公开(公告)日：2025-01-21
申请号：US17971698
申请日：2022-10-24
Applicant: SEIKO EPSON CORPORATION
Inventor： Toru Kashimura
IPC: B41J2/045
Abstract: A liquid discharge device including a drive circuit substrate that drives a piezoelectric element of a liquid discharge head, and that includes a substrate which includes a first wiring layer having a first wiring through which the first drive signal propagates, a second wiring layer having a second wiring through which the second drive signal propagates, and a third wiring layer located between the first wiring layer and the second wiring layer and having a fourth wiring through which the reference voltage signal propagates, in which a third wiring through which the third drive signal propagates is provided on any one of the first wiring layer, the second wiring layer, and the third wiring layer.
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Patent Agency Ranking
公开(公告)号：US11292251B2
公开(公告)日：2022-04-05
申请号：US17005486
申请日：2020-08-28
Applicant: Seiko Epson Corporation
Inventor： Toru Kashimura , Yoichiro Kondo , Tetsuo Takagi
IPC: B41J2/045
Abstract: A drive circuit includes a first voltage output circuit coupled to a first terminal and outputting a first voltage signal, a second voltage output circuit coupled to a second terminal and outputting a second voltage signal, and a drive signal output circuit coupled to the first terminal and outputting a drive signal. In a first mode, the second voltage output circuit outputs the second voltage signal and the drive signal output circuit outputs the drive signal whose voltage value varies. In a second mode, the second voltage output circuit outputs the second voltage signal and the drive signal output circuit outputs the drive signal which is constant at a third voltage value. In a third mode, the first voltage output circuit outputs the first voltage signal and the second voltage output circuit outputs the second voltage signal.
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公开(公告)号：US11148416B2
公开(公告)日：2021-10-19
申请号：US16724517
申请日：2019-12-23
Applicant: SEIKO EPSON CORPORATION
Inventor： Toru Kashimura , Dai Nozawa
Abstract: A liquid discharging apparatus that includes a discharging head for discharging liquid, a driving circuit for generating a driving signal, and a circuit board, in which the driving circuit includes a coil and a capacitor, the circuit board includes a first layer, a second layer, first wiring provided at the first layer, second wiring provided at the second layer, and interlayer wiring, the first wiring couples a first start point and a first end point, and is provided in a circumferential shape, the second wiring couples a second start point and a second end point, and is provided in a circumferential shape, the interlayer wiring electrically couples the first end point and the second start point, the first wiring and the second wiring partially overlap each other, and the first wiring, the second wiring, and the interlayer wiring constitute at least a part of the coil.
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公开(公告)号：US11192366B2
公开(公告)日：2021-12-07
申请号：US16934684
申请日：2020-07-21
Applicant: SEIKO EPSON CORPORATION
Inventor： Hiroaki Okui , Eiju Hirai , Toru Kashimura , Yuki Watanabe
Abstract: A length of a path between the input section and the third energy generation element in the wiring section is shorter than a length of a path between the input section and the first energy generation element in the wiring section and shorter than a length of a path between the input section and the second energy generation element in the wiring section.
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公开(公告)号：US10919295B2
公开(公告)日：2021-02-16
申请号：US16581822
申请日：2019-09-25
Applicant: Seiko Epson Corporation
Inventor： Toru Kashimura , Yuki Watanabe
Abstract: A liquid ejecting apparatus includes a liquid discharging head having a nozzle and a piezoelectric element, a driving signal generating circuit, a reference voltage signal generating circuit, a substrate on which the driving signal generating circuit and the reference voltage signal generating circuit are provided, a first wire, a second wire, and a coil, in which the driving signal generating circuit generates a driving signal, the reference voltage signal generating circuit generates a reference voltage signal, the piezoelectric element is driven based on the driving signal supplied to one end of the piezoelectric element and the reference voltage signal supplied to the other end of the piezoelectric element, the first wire propagates the driving signal to the one end, and the second wire propagates the reference voltage signal to the other end through the coil.
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公开(公告)号：US10035341B2
公开(公告)日：2018-07-31
申请号：US15270211
申请日：2016-09-20
Applicant: Seiko Epson Corporation
Inventor： Toru Kashimura , Hiroshi Sugita
CPC classification number: B41J2/04541 , B41J2/04581 , B41J2/04586 , B41J2/0459 , B41J2/04591 , B41J2/04593 , B41J2/04596 , B41J2/155 , B41J2/1612 , B41J2202/03 , H01F27/24 , H01F27/2823 , H03K7/08
Abstract: A driving circuit for driving a capacitive load includes a signal modulation section that causes an original drive signal to be pulse-modulated to generate a modulation signal, a signal amplification section that amplifies the modulation signal to generate an amplification modulation signal, and a coil that smooths the amplification modulation signal to generate a drive signal.
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