公开(公告)号：US20200031124A1

公开(公告)日：2020-01-30

申请号：US16498031

申请日：2018-03-29

Applicant: KYOCERA Corporation

Inventor： Hiroyuki KAWAMURA ,  Wataru IKEUCHI ,  Yifei JIAO ,  Yusaku KANEKO

IPC: B41J2/14

Abstract: A liquid discharge head 2 of the present disclosure includes: a flow path member 4 having a plurality of pressurizing chambers 10 connected to respective discharge holes 8, a first common flow path 20 commonly connected to the plurality of pressurizing chambers 10, and a second common flow path 22 commonly connected to the plurality of pressurizing chambers 10; and a plurality of pressurizing units 50 that pressurizes the respective pressurizing chambers 10, in which the first common flow path 20 extends in a first direction and is open to an outside of the flow path member 4 at both end portions, and the second common flow path 22 extends in the first direction and is open to the outside of the flow path member 4 at both end portions.

公开(公告)号：US20190299614A1

公开(公告)日：2019-10-03

申请号：US16335624

申请日：2017-09-22

Applicant: KYOCERA Corporation

Inventor： Takashi MIYAHARA ,  Wataru IKEUCHI ,  Hiroyuki KAWAMURA ,  Kenichi YOSHIMURA ,  Naoki KOBAYASHI

IPC: B41J2/14 ,  B41J2/18

Abstract: A first flow path member of a liquid ejection head includes a plurality of pressurizing chambers respectively connected to a plurality of ejection holes, a plurality of first individual flow paths and a plurality of second individual flow paths which are respectively connected to the plurality of pressurizing chambers, and a first common flow path connected in common to the plurality of first individual flow paths and the plurality of second individual flow paths. The pressurizing chamber, the first individual flow path, the first common flow path, and the second individual flow path configure an annular flow path. When T0 denotes a resonance period of the pressurizing chamber and T1 denotes a time required for a pressure wave to circulate once around the annular flow path, a decimal place value of T1/T0 is ⅛ to ⅞.

公开(公告)号：US20170239948A1

公开(公告)日：2017-08-24

申请号：US15128263

申请日：2015-03-27

Applicant: KYOCERA Corporation

Inventor： Yuka MATSUMOTO ,  Naoki KOBAYASHI ,  Hiroyuki KAWAMURA

IPC: B41J2/14 ,  B41J2/21

CPC classification number: B41J2/14233 ,  B41J2/14209 ,  B41J2/155 ,  B41J2/18 ,  B41J2/21 ,  B41J2002/14306 ,  B41J2002/14419 ,  B41J2002/14459 ,  B41J2202/11 ,  B41J2202/12 ,  B41J2202/20

Abstract: A liquid discharge head includes a flow passage member and a plurality of pressurizing sections. The flow passage member includes a plurality of discharge holes, a plurality of pressurizing chambers connected to a plurality of the discharge holes, a plurality of first flow passages connected to a plurality of the pressurizing chambers, a second flow passage connected in common to a plurality of the first flow passages, a plurality of third flow passages connected to a plurality of the pressurizing chambers, and a fourth flow passage connected in common to a plurality of the third flow passages. The pressurizing sections pressurize liquid in the pressurizing chambers. The third flow passage has a wide section connected to the pressurizing chamber and a narrow section connecting the wide section and the fourth flow passage. The wide section is disposed toward the discharge hole of the pressurizing chamber.

公开(公告)号：US20180319162A1

公开(公告)日：2018-11-08

申请号：US15771813

申请日：2016-10-27

Applicant: KYOCERA Corporation

Inventor： Naoki KOBAYASHI ,  Hiroyuki KAWAMURA ,  Wataru IKEUCHI

IPC: B41J2/14

CPC classification number: B41J2/14056 ,  B41J2/14048 ,  B41J2/14072 ,  B41J2/14209 ,  B41J2/14274 ,  B41J2002/14419 ,  B41J2002/14459 ,  B41J2002/14491 ,  B41J2202/12 ,  B41J2202/21

Abstract: In a liquid ejection head, an ejection unit of a channel member includes an ejection hole, a pressurizing chamber connected to the ejection hole, a first channel and a second channel each connecting the pressurizing chamber and a first common channel, and a third channel connecting the pressurizing chamber and a second common channel. The first common channel, in the channel direction, includes a plurality of first portions, and a plurality of second portions each located between each two of the plurality of first portions and having smaller cross-sectional areas than those of the first portions in front and back of the same. In each of the plurality of ejection units, the first channel and the second channel are individually connected to two positions in the first common channel which sandwich at least one of the second portions between them.

公开(公告)号：US20140314255A1

公开(公告)日：2014-10-23

申请号：US14321545

申请日：2014-07-01

Applicant: KYOCERA CORPORATION

Inventor： Shuichi FUKUOKA ,  Noriyuki KUSHIMA ,  Hiroyuki KAWAMURA ,  Hiroshi NINOMIYA

IPC: H04R17/00

CPC classification number: H04R17/00 ,  B06B1/0603 ,  B06B1/0614 ,  B06B1/064 ,  H04R7/26 ,  H04R2217/03

Abstract: Provided is an acoustic generator which has a high sound pressure at ultrahigh frequencies and which can suppress occurrence of large peak dips. An acoustic generator includes a film, a frame member disposed on an outer peripheral edge of the film, a piezoelectric element disposed on the film and inside the frame member, and a resin layer filled inside the frame member so as to cover the piezoelectric element.

Abstract translation: 提供了一种在超高频下具有高声压并且可以抑制大峰值下降的发生的声发生器。 声发生器包括膜，设置在膜的外周缘上的框架构件，设置在膜上的框架构件内的压电元件和填充在框架构件内部以覆盖压电元件的树脂层。

公开(公告)号：US20210008885A1

公开(公告)日：2021-01-14

申请号：US17042985

申请日：2019-03-15

Applicant: KYOCERA Corporation

Inventor： Yusaku KANEKO ,  Hiroyuki KAWAMURA ,  Shota KIGURE ,  Wataru IKEUCHI ,  Yifei JIAO

IPC: B41J2/14

Abstract: A liquid discharge head includes: a first flow path member that discharges a liquid; a second flow path member including a supply flow path for sending the liquid to the first flow path member, and a collecting flow path for collecting the liquid from the first flow path member. The supply flow path includes a supply branch flow path that branches out at a center portion of the second flow path member in the first direction and extends in a first direction and in a third direction opposite thereto. The collecting flow path includes a collecting branch flow path that branches out at the center portion of the second flow path member in the first direction and extends in the first direction and in the third direction. When viewed in plan, the supply branch flow path and the collecting branch flow path overlap each other.

公开(公告)号：US20170182772A1

公开(公告)日：2017-06-29

申请号：US15118311

申请日：2015-02-19

Applicant: KYOCERA Corporation

Inventor： Kenko GEJIMA ,  Hiroyuki KAWAMURA ,  Naoki KOBAYASHI

IPC: B41J2/14

CPC classification number: B41J2/14201 ,  B41J2/14209 ,  B41J2/14233 ,  B41J2/14274 ,  B41J2/18 ,  B41J2002/14459 ,  B41J2202/12 ,  B41J2202/20

Abstract: A liquid discharge head including first flow channel members, each having discharge holes, pressurizing chambers, first common supply flow channels, and first common recovery flow channels where the first common supply flow channels and first common recovery flow channels are long in a first direction, and the first flow channel members are disposed in a second direction; a second flow channel member having a second common supply flow channel and a second common recovery flow channel; and pressurizing parts to respectively pressurize the liquid in the pressurizing chambers. The second flow channel member is disposed on the first flow channel member. The first flow channel member, second flow channel member, second common supply flow channel, and second common recovery flow channel are long in the second direction. Pressure loss may therefore be minimized in the pressurizing chambers without increasing the size of the liquid discharge head in a planar direction.

公开(公告)号：US20170151792A1

公开(公告)日：2017-06-01

申请号：US15320906

申请日：2015-06-25

Applicant: KYOCERA Corporation

Inventor： Naoki KOBAYASHI ,  Hiroyuki KAWAMURA

IPC: B41J2/175

CPC classification number: B41J2/175 ,  B41J2/14209 ,  B41J2/2146 ,  B41J29/02 ,  B41J2002/14419 ,  B41J2002/14459 ,  B41J2002/14491 ,  B41J2202/12 ,  B41J2202/21

Abstract: [Object] It is an object of the present invention to provide a liquid discharge head that is capable of holding a meniscus.[Solution] A flow channel member according to the present invention comprises a plurality of discharge elements 15 that discharges liquid; a plurality of first discrete flow channels 12, each allocated for each one of the discharge elements 15; a plurality of second discrete flow channels 14, each allocated for each one of the discharge elements 15; a first common flow channel 20 extending from one side D1a to another side D1b in a first direction D1 and connected commonly to the plurality of first discrete flow channels 12; a first opening 20a that connects the first common flow channel 20 and an outside; a second common flow channel 24 extending from the one side D1a to the other side D1b in the first direction D1 and connected commonly to the plurality of second discrete flow channels 14; and a second opening 24a that connects the second common flow channel 24 and the outside. The first opening 20a is located on the one side D1a of the first common flow channel 20 in the first direction D1, and the second opening 24a is located on the one side D1a of the second common flow channel 24 in the first direction D1.

公开(公告)号：US20170282556A1

公开(公告)日：2017-10-05

申请号：US15507467

申请日：2015-08-26

Applicant: KYOCERA Corporation

Inventor： Daisuke HOZUMI ,  Hiroyuki KAWAMURA ,  Naoki KOBAYASHI

IPC: B41J2/14 ,  B41J2/06 ,  B41J2/165

CPC classification number: B41J2/14161 ,  B41J2/06 ,  B41J2/14209 ,  B41J2/1429 ,  B41J2/16511 ,  B41J2/16585 ,  B41J2/525 ,  B41J2002/14306 ,  B41J2002/14419 ,  B41J2002/14459 ,  B41J2002/14467 ,  B41J2002/16502 ,  B41J2002/16514 ,  B41J2202/12

Abstract: A liquid discharge head is configured to achieve decrease in temperature difference in the liquid discharge head, and includes a recording device including the liquid discharge head. The liquid discharge head includes a channel member having a plurality of discharge holes, a plurality of pressurization chambers, and a plurality of common channels, and a plurality of pressurizing parts. The plurality of common channels extends in a first direction and configures a common channel group aligned in a second direction crossing the first direction, the common channels are connected with the plurality of pressurization chambers disposed along the common channels among the plurality of pressurization chambers, and the channel member is disposed outside, in the second direction, with respect to the common channel group, and further includes a first end channel extending in the first direction, and the first end channel is lower in channel resistance than the common channels.