公开(公告)号：US12138927B2

公开(公告)日：2024-11-12

申请号：US18080489

申请日：2022-12-13

Applicant: SII Printek Inc.

Inventor： Hitoshi Nakayama

IPC: B41J2/14

Abstract: A head chip, a liquid jet head, and a liquid jet recording device each capable of inhibiting mechanical crosstalk, and exerting a desired jet performance are provided. The head chip according to an aspect of the present disclosure includes a flow channel member having a plurality of pressure chambers containing liquid, an actuator plate which is stacked on the flow channel member in a state of being opposed in a first direction to the pressure chambers, and a drive electrode which is formed on a surface of the actuator plate, the surface facing to the first direction, and which is configured to deform the actuator plate in the first direction to change a volume of at least one of the pressure chambers. A dividing groove which is configured to zone the actuator plate between the pressure chambers adjacent to each other is formed in a portion of the actuator plate, the portion being located between the pressure chambers adjacent to each other when viewed from the first direction.

公开(公告)号：US12122159B2

公开(公告)日：2024-10-22

申请号：US18082257

申请日：2022-12-15

Applicant: SII Printek Inc.

Inventor： Hitoshi Nakayama

IPC: B41J2/14

CPC classification number: B41J2/14209 ,  B41J2/14201 ,  B41J2/14072 ,  B41J2002/14225

Abstract: A head chip, a liquid jet head, and a liquid jet recording device each capable of increasing pressure generated while achieving power saving are provided. The head chip according to an aspect of the present disclosure includes a flow channel member having a pressure chamber containing liquid, an actuator plate which is stacked on the flow channel member in a state of being opposed to the pressure chamber in a first direction, a drive electrode which is formed on a surface facing to the first direction in the actuator plate, and which is configured to deform the actuator plate in the first direction to change a volume of the pressure chamber, and a non-drive member which is stacked at an opposite side to the flow channel member across the actuator plate in the first direction, and which is configured to limit a displacement of the actuator plate toward an opposite side to the flow channel member in the first direction.

公开(公告)号：US10967636B2

公开(公告)日：2021-04-06

申请号：US16698139

申请日：2019-11-27

Applicant: SII Printek Inc.

Inventor： Hitoshi Nakayama

IPC: B41J2/14 ,  B41J2/16 ,  B41J2/175 ,  B41J2/18

Abstract: A head chip capable of suppressing the degradation of the reliability, and a liquid jet head and a liquid jet recording device using the head chip are provided. The head chip includes an actuator plate having a plurality of ejection channels respectively communicated with nozzle holes and electrodes disposed on inner walls of the respective ejection channels, a bonded plate to be bonded to the actuator plate, and having a liquid contact surface which liquid entered the ejection channels has contact with, an adhesive layer disposed between the bonded plate and the actuator plate, and adapted to bond the bonded plate and the actuator plate to each other, and a protective film adapted to cover continuously from inner walls of the respective ejection channels to at least a part of the liquid contact surface via an end surface of the adhesive layer exposed on the ejection channel side.

公开(公告)号：US10513117B2

公开(公告)日：2019-12-24

申请号：US15924695

申请日：2018-03-19

Applicant: SII Printek Inc.

Inventor： Hitoshi Nakayama ,  Takeshi Sugiyama ,  Daichi Nishikawa ,  Eriko Maeda

IPC: B41J2/14 ,  B41J2/16

Abstract: According to an embodiment, an ink jet head (liquid ejecting head) includes an actuator plate and a cover plate (see FIG. 8). As illustrated in FIG. 1, channel grooves for a discharge channel (ejection channel) and a non-discharge channel (non-ejection channel) in a Z-direction are formed on a front surface of the actuator plate, so as to be alternately arranged in an X-direction, by cutting with a dicing blade or the like. The discharge channel and the non-discharge channel are formed to have a groove width W of smaller than 70 μm, in order to correspond to high density of nozzles. In the embodiment, the discharge channel and the non-discharge channel are formed to have a groove width of 55 μm, 50 μm, or 40 μm, for example.

公开(公告)号：US11951749B2

公开(公告)日：2024-04-09

申请号：US17553356

申请日：2021-12-16

Applicant: SII Printek Inc.

Inventor： Hitoshi Nakayama

IPC: B41J2/18 ,  B41J2/14

CPC classification number: B41J2/18 ,  B41J2/14201

Abstract: There are provided a head chip, a liquid jet head, and a liquid jet recording device each capable of ensuring an electrical reliability, and enhancing the durability. The head chip according to an aspect of the present disclosure includes an actuator plate having ejection channels and non-ejection channels extending in a Z direction and arranged alternately in an X direction, and a nozzle plate which has nozzle holes respectively communicated with the ejection channels, and faces the actuator plate. The non-ejection channels are terminated at positions separated from a lower end surface of the actuator plate. The ejection channels open on a lower end surface of the actuator plate.

公开(公告)号：US11919306B2

公开(公告)日：2024-03-05

申请号：US17542845

申请日：2021-12-06

Applicant: SII Printek Inc.

Inventor： Hitoshi Nakayama

IPC: B41J2/14 ,  B41J2/16

CPC classification number: B41J2/14201 ,  B41J2/1607 ,  B41J2/164

Abstract: The trouble of removing a protective film such as a poly-paraxylene film from the part not requiring the protective film is reduced. A method of manufacturing a head chip according to an aspect of the present disclosure includes a substrate preparation step of preparing an actuator plate substrate having a jet channel communicated with a nozzle hole configured to jet ink, and a non-jet channel which does not jet the ink, and a protective film formation step of forming a protective film configured to protect a common electrode formed on an inner surface of the jet channel from the ink in a state in which the jet channel is exposed and the non-jet channel is covered after the substrate preparation step.

公开(公告)号：US11072176B2

公开(公告)日：2021-07-27

申请号：US16675608

申请日：2019-11-06

Applicant: SII Printek Inc.

Inventor： Hitoshi Nakayama ,  Yuji Nakamura ,  Yuki Yamamura ,  Mizuki Kudo

IPC: B41J2/16 ,  B41J2/14 ,  B41J2/165

Abstract: A liquid jet head chip capable of exerting a stable ejection performance is provided. The liquid jet head chip is provided with an actuator plate and an electrode. The actuator plate has an obverse surface, a reverse surface, and two or more ejection channels which penetrate the actuator plate in a thickness direction from the obverse surface toward the reverse surface, which are disposed so as to be adjacent to each other at intervals in a first direction perpendicular to the thickness direction, and which are disposed so as to extend in a second direction perpendicular to both of the thickness direction and the first direction. The electrode is disposed on an inner surface of the ejection channel, and includes a first electrode part covering the inner surface of the ejection channel continuously from the obverse surface toward the reverse surface, and a second electrode part covering the inner surface of the ejection channel continuously from the reverse surface toward the obverse surface, and overlapping at least a part of the first electrode part.

公开(公告)号：US10807364B2

公开(公告)日：2020-10-20

申请号：US16186957

申请日：2018-11-12

Applicant: SII Printek Inc.

Inventor： Daichi Nishikawa ,  Misaki Kobayashi ,  Tomoki Kameyama ,  Hitoshi Nakayama

IPC: B41J2/14

Abstract: There are provided a head chip, a liquid jet head, and a liquid jet recording device capable of enhancing the reliability. The head chip according to an embodiment of the disclosure is a head chip adapted to jet liquid including an actuator plate having a plurality of ejection grooves arranged side by side along a first direction, and extending in a second direction crossing the first direction, a plurality of common electrodes formed on respective inner surfaces of the plurality of ejection grooves, and a commonalization interconnection adapted to electrically connect the plurality of common electrodes to each other, and a nozzle plate having a plurality of nozzle holes individually communicated with the plurality of ejection grooves.

公开(公告)号：US10046563B2

公开(公告)日：2018-08-14

申请号：US15353055

申请日：2016-11-16

Applicant: SII Printek Inc.

Inventor： Hitoshi Nakayama

IPC: B41J2/14 ,  B41J2/16 ,  C23C18/16 ,  C23C18/22 ,  C23C18/18

Abstract: A liquid jet head includes a partition separating adjacent grooves, a lower substrate fixing a lower portion of the partition, and an upper substrate installed on an upper end surface of the partition. The partition includes an electrode layer on a surface lower than the upper end surface, the electrode layer including an outer surface approximately perpendicular to the upper end surface, the outer surface continuing to the upper end surface through a first convex curved surface curving outward.

公开(公告)号：US10471716B2

公开(公告)日：2019-11-12

申请号：US15883919

申请日：2018-01-30

Applicant: SII Printek Inc.

Inventor： Hitoshi Nakayama

IPC: B41J2/14 ,  B41J2/16 ,  B41J2/145 ,  H01L41/047 ,  H01L41/09 ,  H01L41/187 ,  H01L41/29 ,  H01L41/332 ,  H01L41/338

Abstract: According to an embodiment, a liquid ejecting head chip includes an actuator plate and an in-channel electrode. In the actuator plate, a plurality of channels are arranged at a distance in an X-direction. Each of the channels includes an extension portion and a raise-and-cut portion. The extension portion extends in a Z-direction. The raise-and-cut portion continues from the extension portion toward one side of the Z-direction and has a groove depth which is gradually reduced toward the one side of the Z-direction. The in-channel electrode is formed on an inner surface of each of the channels, with a plating film.