公开(公告)号：EP4431289A1

公开(公告)日：2024-09-18

申请号：EP24151167.4

申请日：2024-01-10

Applicant: Toshiba Tec Kabushiki Kaisha

Inventor： Sato, Tetsuya

IPC: B41J2/14

CPC classification number: B41J2/14209 ,  B41J2202/1220130101 ,  B41J2202/0820130101

Abstract: According to one embodiment, a liquid ejection head includes an actuator with pressure chambers, a first common chamber on a first side of the pressure chambers, a second common chamber on a second side of the of pressure chambers, and a manifold providing a first liquid flow path above the first common chamber, a first cooling flow path above the second common chamber, and a second liquid flow path above the first cooling flow path. The second liquid flow path is connected to the first liquid flow path by a confluence portion at a confluence position between a first end of the first liquid flow path and a midpoint of the of the first liquid flow path.

公开(公告)号：EP4166338B1

公开(公告)日：2024-08-14

申请号：EP22200799.9

申请日：2022-10-11

IPC: B41J2/14 ,  B41J2/16

CPC classification number: B41J2/14209 ,  B41J2/1433 ,  B41J2/1609 ,  B41J2/1623 ,  B41J2/1632 ,  B41J2/1634

公开(公告)号：EP4385741A1

公开(公告)日：2024-06-19

申请号：EP23216477.2

申请日：2023-12-13

Applicant: SII Printek Inc.

Inventor： NAKAYAMA, Hitoshi

IPC: B41J2/14 ,  B41J2/16

CPC classification number: B41J2/14209 ,  B41J2202/1020130101 ,  B41J2002/1449120130101 ,  B41J2/1609 ,  B41J2/1632

Abstract: A head chip, a liquid jet head, and a liquid jet recording device which effectively transfer elastic energy to ink in a pressure chamber to increase pressure to be generated in the pressure chamber are provided. The head chip (50) includes an actuator plate (53) provided with a pressure chamber (61) in which a liquid is contained, a jet hole plate (51) which has a jet hole (71) communicated with the pressure chamber, and which is overlapped on the actuator plate in a thickness direction of the actuator plate, and a drive electrode (81, 82) which is configured to generate an electric field in the actuator plate to thereby deform the actuator plate in the thickness direction and a crossing direction crossing the thickness direction to expand or contract a volume of the pressure chamber.

公开(公告)号：EP3210780B1

公开(公告)日：2018-10-17

申请号：EP17152261.8

申请日：2017-01-19

Applicant: Toshiba TEC Kabushiki Kaisha

Inventor： SEKI, Masashi

IPC: B41J2/14 ,  B41J2/16

CPC classification number: B41J2/14209 ,  B41J2/1606 ,  B41J2/1609 ,  B41J2/1623 ,  B41J2/1626 ,  B41J2/1631 ,  B41J2/1642 ,  B41J2002/14491

Abstract: An ink jet head (10) includes a base (15), walls (18) attached to the base and defining flow paths (51,52) between the walls, the flow paths including first and second flow paths alternating with one another, a nozzle plate (16) comprising openings (25), each of which communicates with one of the first flow paths, an ink supply unit (12) fluidly coupled to the first flow paths, electrodes (28) on side surfaces of the walls, first and second wirings (35), each extending along the base and each being individually connected to one of the electrodes, a plurality of first protective layers (54) on the base, the first wiring extending between a first pair of the first protective layers and the second wiring extending between a second pair of the first protective layers, and a second protective layer (56) comprising an electrically insulating layer covering the first protective layers and the first and second wirings.

公开(公告)号：EP3199349B1

公开(公告)日：2018-09-26

申请号：EP17152258.4

申请日：2017-01-19

Applicant: Toshiba TEC Kabushiki Kaisha

Inventor： HIYOSHI, Teruyuki ,  NITTA, Noboru ,  ONO, Syunichi

IPC: B41J2/045 ,  B41J2/14

CPC classification number: B41J2/04541 ,  B41J2/0453 ,  B41J2/04581 ,  B41J2/14209

Abstract: An ink jet head includes first side walls including two piezoelectric elements, second side walls, a first electrode, a second electrode, an ink chamber containing conductive ink, and a control unit. The second side walls alternate with the first side walls to provide side surfaces for driving pressure chambers and dummy pressure chambers. On one of the first side walls, the first electrode is on the side wall surface of a driving pressure chamber and a second electrode is on the side wall surface of a dummy pressure chamber. The control unit applies a voltage having a first waveform to the first electrode, and a voltage having a second waveform, a portion of which is inverted with respect to the first waveform, to the second electrode to cause ink to be ejected, and cause the second electrode to electrically float such that ink is not ejected.

公开(公告)号：EP2447073B1

公开(公告)日：2018-08-08

申请号：EP10792194.2

申请日：2010-06-25

Applicant: Kyocera Corporation

Inventor： MATSUMOTO,Ayumu ,  IKEUCHI,Wataru

IPC: B41J2/045 ,  B41J2/055 ,  B41J2/14

CPC classification number: B41J2/14209 ,  B41J2002/14217 ,  B41J2002/14225 ,  B41J2002/14306 ,  B41J2002/14459 ,  B41J2002/14491 ,  B41J2202/11 ,  B41J2202/20

Abstract: The present invention provides a liquid discharge head less susceptible to crosstalk between displacement elements adjacent to each other, and a recording device using the liquid discharge head. The liquid discharge head includes a plate-shaped passage member providing a plurality of liquid pressurizing chambers of identical shape which open into a main surface and are arranged in a matrix shape, a plurality of liquid discharge holes, and a plurality of individual supply paths; and a plate-shaped piezoelectric actuator having a common electrode, a piezoelectric layer, and a plurality of individual electrodes laminated on a diaphragm. The plate-shaped passage member and the plate-shaped piezoelectric actuator are laminated one upon another so that the diaphragm and the piezoelectric layer cover the plurality of liquid pressurizing chambers. In a plan view of the liquid discharge head, an opening of each of the liquid pressurizing chambers is a polygonal shape having at least one acute angle shaped corner. A connection electrode led out to outside the liquid pressurizing chamber in the liquid pressurizing chamber and the individual electrode is disposed in a parallelogram shaped region including two sides holding therebetween an acute angle shaped corner of the liquid pressurizing chamber, and two corners adjacent to the corner.

公开(公告)号：EP3315306A4

公开(公告)日：2018-07-18

申请号：EP16830519

申请日：2016-07-26

Applicant: KYOCERA CORP

Inventor： SONOBATA HIDETAKA

IPC: B41J2/14 ,  B41J2/155 ,  B41J2/21

CPC classification number: B41J2/1433 ,  B41J2/14209 ,  B41J2/1609 ,  B41J2/162 ,  B41J2/1625 ,  B41J2/1631 ,  B41J2/1632 ,  B41J2/1634 ,  B41J2/1643 ,  B41J2/1645 ,  B41J2/2125 ,  B41J2002/14225 ,  B41J2002/14459 ,  B41J2002/14475 ,  B41J2202/20

Abstract: A liquid ejection head 2 of the present disclosure includes an ejection hole surface 31a at which a plurality of nozzles 8 ejecting liquid open. The ejection hole surface includes a nozzle arrangement region 7 in which the plurality of nozzles 8 are arranged. Each nozzle 8 includes an inversely tapered part 8b where a cross-sectional area increases toward the ejection hole surface 31a. A first nozzle 8-1 of the nozzles 8 is arranged at a center part 7a of a predetermined direction of the nozzle arrangement region 7, while second nozzles 8-2 of the nozzles 8 are arranged at the end parts 7b at the two sides in the predetermined direction. When defining a width of the inversely tapered part 8b when viewed from the ejection hole surface 31a side as "T", the width T of the inversely tapered part of the first nozzle 8-1 is larger than the widths T of the inversely tapered parts of the second nozzles 8-2. In the nozzle arrangement region, the ejection hole surface 31a includes a shape that the center part 7a in the predetermined direction projects with respect to the end parts 7b on the two sides in the predetermined direction.

公开(公告)号：EP3299169A1

公开(公告)日：2018-03-28

申请号：EP17189859.6

申请日：2017-09-07

Applicant: Toshiba TEC Kabushiki Kaisha

Inventor： KIJI, Yasuhito

IPC: B41J2/045

CPC classification number: B41J2/04588 ,  B41J2/04541 ,  B41J2/04581 ,  B41J2/04586 ,  B41J2/04595 ,  B41J2/14209 ,  B41J2002/14491 ,  B41J2202/12

Abstract: An ink jet head drive device includes a pressure chamber in which a liquid can be contained, an actuator configured to change a pressure on the liquid in the pressure chamber by changing a volume of the pressure chamber in response to a drive signal, a nozzle through which the liquid contained in the pressure chamber can be ejected when an ejection pulse is supplied to the actuator, and a drive circuit configured to output the drive signal to the actuator as a drive waveform having a first pulse group and a second pulse group following the first pulse group when at least three consecutive ejection pulses are included in the drive waveform. All ejection pulses in the first pulse group have a first voltage amplitude, and all ejection pulses in the second pulse group have a second voltage amplitude that is smaller than the first voltage amplitude.

Abstract translation: 本发明提供一种喷墨头驱动装置，该喷墨头驱动装置具备：能够收纳液体的压力室;致动器，其根据驱动信号使压力室的容积发生变化，从而改变压力室内的液体的压力; 其中，当向致动器供给喷射脉冲时，容纳在压力室中的液体能够被喷射;以及驱动电路，其被配置为将驱动信号输出到致动器，作为具有第一脉冲组和第二脉冲组的驱动波形， 当至少三个连续的喷射脉冲被包括在驱动波形中时第一脉冲组。 第一脉冲组中的所有喷射脉冲具有第一电压振幅，并且第二脉冲组中的所有喷射脉冲具有小于第一电压振幅的第二电压振幅。

公开(公告)号：EP3248783A1

公开(公告)日：2017-11-29

申请号：EP16740314.6

申请日：2016-01-23

Applicant: Kyocera Corporation

Inventor： KOBAYASHI,Naoki ,  KUSHIMA,Yuka

IPC: B41J2/14 ,  B41J2/18

CPC classification number: B41J2/1433 ,  B41J2/14209 ,  B41J2/18 ,  B41J2002/14306 ,  B41J2002/14419 ,  B41J2002/14459 ,  B41J2202/12

Abstract: A liquid discharge head of the present disclosure includes a flow path member 4 having a plurality of discharge holes 8, a plurality of pressure chambers 10, a plurality of first common flow paths 20, and a plurality of second common flow paths 24, and a plurality of pressure sections 50. The first common flow paths 20 and the second common flow paths 24 are linked through a connection flow path 25 outside a connection range C, the connection range C being linked through the pressure chambers 10. The flow path member 4 is configured by laminating a plurality of flat plates 4a to 41. The connection flow path 25 includes holes and/or grooves disposed in plates 4a to 4e, and 4j to 41 other than the common flow path plates 4f to 4i that constitute the first common flow paths 20 and the second common flow paths 24.

Abstract translation: 本公开的液体排出头包括具有多个排出孔8，多个压力室10，多个第一公共流动路径20和多个第二公共流动路径24的流动路径构件4，以及 多个压力部50.第一公共流路20和第二公共流路24通过连接范围C外的连接流路25连通，连接范围C通过压力腔10连通。流路部件4 通过层叠多个平板4a〜41而构成。连接流路25包括配置在构成第一通用平板4的公共流路板4f〜4i以外的板4a〜4e，4j〜41中的孔和/或槽 流路20和第二公共流路24。

公开(公告)号：EP3243664A1

公开(公告)日：2017-11-15

申请号：EP16752503.9

申请日：2016-02-17

Applicant: Kyocera Corporation

Inventor： KOBAYASHI,Hiroki

IPC: B41J2/14 ,  B41J2/16

CPC classification number: B41J2/1433 ,  B41J2/14209 ,  B41J2/1609 ,  B41J2/1623

Abstract: A passage member 4 of the present disclosure includes a plurality of plates 4a-i including openings forming a passage through which a liquid flows and stacked through an adhesive. In at least one plate 4e, a plurality of adhesive spill holes 18 are arranged at substantially the same distances from the opening (descender 16) so as to surround the opening (descender 16).

Abstract translation: 本发明的通道部件4包括多个板4a-i，所述多个板4a-i包括形成液体流过并通过粘合剂堆叠的通道的开口。 在至少一个板4e中，多个粘合剂溢出孔18以与开口（下降部16）基本相同的距离布置，以围绕开口（下降部16）。