公开(公告)号：US11548283B2

公开(公告)日：2023-01-10

申请号：US16670203

申请日：2019-10-31

Applicant: SII Printek Inc.

Inventor： Suguru Munakata ,  Yuji Nakamura ,  Yuzuru Kubota ,  Daiki Irokawa

IPC: B41J2/16 ,  B23K26/362

Abstract: There are provided a method of manufacturing a head chip capable of suppressing the occurrence of the failure in the process of forming the actuator plate to thereby increase the yield ratio, and a method of manufacturing a liquid jet head using the above method of manufacturing a head chip. The method of manufacturing a head chip according to an embodiment of the present disclosure is a method of manufacturing a head chip having an actuator plate adapted to apply pressure to liquid so as to jet the liquid. Forming the actuator plate includes forming a plurality of grooves on a surface of a piezoelectric substrate having one end and the other end so as to extend from the one end side toward the other end side, forming a conductive film on the surface of the piezoelectric substrate provided with the plurality of grooves, forming a laser processing area in the conductive film between the grooves adjacent to each other by performing laser processing from a start point on the one end side of the piezoelectric substrate to an end point on the other end side, and forming a surface removal area in at least a part including the start point and the end point out of the surface of the piezoelectric substrate by performing surface removal processing in a direction crossing the direction in which the laser processing is performed.

公开(公告)号：US11318766B2

公开(公告)日：2022-05-03

申请号：US17039282

申请日：2020-09-30

Applicant: SII PRINTEK INC.

Inventor： Takanori Koyano

IPC: B41J25/00

Abstract: An alignment of jet holes of a liquid jet head is smoothly performed. A liquid jet head according to an embodiment of the present disclosure includes a nozzle section having a jet hole for liquid, a support member configured to support the nozzle section, and a position adjustment mechanism configured to adjust a position of the jet hole with respect to a carriage. The position adjustment mechanism includes a reference member a position of which with respect to the carriage is fixable, a position adjustment member which is coupled to the support member, and is configured to push the reference member to change a relative distance with respect to the reference member to thereby displace the support member on the carriage, and an intermediary member intervening between the reference member and the position adjustment member. The intermediary member is attached to either one of the reference member and the position adjustment member to form a first pressure-receiving surface facing to a displacement direction of the support member, and the other of the reference member and the position adjustment member has contact with the first pressure-receiving surface.

公开(公告)号：US20220111641A1

公开(公告)日：2022-04-14

申请号：US17486379

申请日：2021-09-27

Applicant: SII PRINTEK INC.

Inventor： Kensuke YOSHIDA

IPC: B41J2/045

Abstract: A liquid jet head and so on capable of enhancing the convenience while improving the performance are provided. The liquid jet head according to an embodiment of the present disclosure includes a jet section configured to jet liquid, at least one drive device which applies a drive signal having a predetermined drive waveform to the jet section to thereby cause the jet section to jet the liquid, and a waveform setting section configured to generate regular waveform configuration information for setting the drive waveform based on simplified waveform configuration information supplied from an outside of the liquid jet head. The waveform setting section converts the simplified waveform configuration information including at least one type of reference potential value set along a time axis into the regular waveform configuration information including a plurality of types of power supply potential values set for each of the reference potential values to thereby generate the regular waveform configuration information based on the simplified waveform configuration information.

公开(公告)号：US11254132B2

公开(公告)日：2022-02-22

申请号：US17105083

申请日：2020-11-25

Applicant: SII PRINTEK INC.

Inventor： Masakazu Hirata ,  Yuzuru Kubota ,  Yuki Yamamura ,  Tomoki Ai

IPC: B41J2/14

Abstract: There is provided a head chip and so on capable of achieving the reduction in power consumption and the improvement in print image quality while suppressing the manufacturing cost of the head chip. The head chip according to an embodiment of the present disclosure includes an actuator plate having a plurality of ejection grooves and a plurality of electrodes, a nozzle plate having a plurality of nozzle holes, and a cover plate having a wall part, a first through hole, and a second through hole. The plurality of nozzle holes includes a plurality of first nozzle holes arranged so as to be shifted toward the first through hole, and a plurality of second nozzle holes arranged so as to be shifted toward the second through hole. In a first ejection groove communicated with the first nozzle hole, a first cross-sectional area of a part communicated with the first through hole is smaller than a second cross-sectional area of a part communicated with the second through hole. Positions of both ends of the electrode along the extending direction of the ejection grooves are each aligned in the plurality of electrodes along a predetermined direction.

公开(公告)号：US11225079B2

公开(公告)日：2022-01-18

申请号：US17105067

申请日：2020-11-25

Applicant: SII PRINTEK INC.

Inventor： Masakazu Hirata ,  Kenji Suzuki ,  Masanori Tamura

IPC: B41J2/14 ,  B41J2/145

Abstract: There are provided a head chip and so on capable of improving the print image quality while suppressing the manufacturing cost. The head chip according to an embodiment of the present disclosure includes an actuator plate having a plurality of ejection grooves, a nozzle plate having a plurality of nozzle holes, and a cover plate having a first through hole, a second through hole, and a wall part. The plurality of nozzle holes includes a plurality of first nozzle holes arranged so as to be shifted toward the first through hole, and a plurality of second nozzle holes arranged so as to be shifted toward the second through hole. In a first ejection groove communicated with the first nozzle hole, a first cross-sectional area of a part communicated with the first through hole is smaller than a second cross-sectional area of a part communicated with the second through hole. In a second ejection groove communicated with the second nozzle hole, the second cross-sectional area is smaller than the first cross-sectional area. A first expansion flow channel part is formed in the vicinity of the first nozzle hole, and a second expansion flow channel part is formed in the vicinity of the second nozzle hole. A central position of the first expansion flow channel part coincides with a first central position of the first nozzle hole, or is shifted toward the first through hole. A central position of the second expansion flow channel part coincides with a second central position of the second nozzle hole, or is shifted toward the second through hole.

公开(公告)号：US11173707B2

公开(公告)日：2021-11-16

申请号：US16797371

申请日：2020-02-21

Applicant: SII PRINTEK INC.

Inventor： Toshiaki Watanabe ,  Kensuke Yoshida

IPC: B41J2/045

Abstract: An embodiment of the present disclosure is a driving circuit for ejecting liquid from a plurality of nozzles in an ejecting section in a liquid ejecting head. The driving circuit includes a first signal generation section that generates a printing driving signal for ejecting the liquid from the nozzles, a second signal generation section that generates an inspection driving signal for inspecting a state of the ejecting section, and a control section that controls the first signal generation section and the second signal generation section so as to exclusively output one of the printing driving signal and the inspection driving signal to the ejecting section.

公开(公告)号：US11040537B2

公开(公告)日：2021-06-22

申请号：US16675926

申请日：2019-11-06

Applicant: SII Printek Inc.

Inventor： Satoshi Horiguchi

IPC: B41J2/14 ,  B41J2/16

Abstract: A head chip, liquid jet head, and liquid jet recording device are described. An actuator plate is adapted to apply pressure to the liquid, and includes a first surface, and a second surface facing to an opposite side to the first surface, ejection channels and non-ejection channels which have an opening on the first and/or second surface and are alternately arranged to be separated from each other, a common electrode disposed on a sidewall of the ejection channel, an individual electrode electrically separated from the common electrode and disposed on a sidewall of the non-ejection channel, a common electrode pad disposed on the first surface and adapted to electrically connect the common electrode and a wiring board to each other, and a bypass interconnection adapted to electrically connect the individual electrodes in the non-ejection channels adjacent to each other and failing to be exposed on the first surface.

公开(公告)号：US10933637B2

公开(公告)日：2021-03-02

申请号：US16531886

申请日：2019-08-05

Applicant: SII Printek Inc.

Inventor： Shunsuke Yamazaki

IPC: B41J2/14 ,  B41J2/16

Abstract: There is provided a liquid jet head and a liquid jet recording device capable of increasing available ink types. The liquid jet head according to an embodiment of the present disclosure is provided with an actuator plate having a plurality of ejection grooves, a nozzle plate having nozzle holes communicated with the ejection grooves, and a nozzle guard having a rib adapted to support the nozzle plate, and a communication hole adapted to communicate each of the first nozzle holes and an outside with each other. The rib has contact with the nozzle plate at a position which fails to be opposed to an opening on the nozzle plate side of each of the ejection grooves.

公开(公告)号：US20200298557A1

公开(公告)日：2020-09-24

申请号：US16801462

申请日：2020-02-26

Applicant: SII PRINTEK INC.

Inventor： Kensuke YOSHIDA ,  Toshiaki WATANABE

IPC: B41J2/045

Abstract: There are provided a liquid ejecting head and a liquid-ejecting recording apparatus in which it is possible to improve convenience. According to an embodiment of the present disclosure, a liquid ejecting head includes an ejecting section including a plurality of nozzles for ejecting liquid, a driving circuit that drives the ejecting section based on a printing driving signal to eject the liquid from the nozzles, a power supply path connected to the driving circuit, a detection section that acquires measurement data based on a detection result of a current flowing on the power supply path, and an arithmetic operation section that performs both an inspection of a state of the ejecting section based on the measurement data obtained by the detection section and acquisition of a parameter for ejection of the liquid.

公开(公告)号：US20200147968A1

公开(公告)日：2020-05-14

申请号：US16675926

申请日：2019-11-06

Applicant: SII Printek Inc.

Inventor： Satoshi Horiguchi

IPC: B41J2/16 ,  B41J2/14

Abstract: There are provided a head chip, a liquid jet head, and a liquid jet recording device capable of enhancing the reliability. An actuator plate adapted to apply pressure to the liquid, and a wiring board are provided. The actuator plate includes a first surface, and a second surface facing to an opposite side to the first surface, ejection channels and non-ejection channels which have an opening on at least one of the first surface and the second surface and are alternately arranged so as to be separated from each other, a common electrode disposed on a sidewall of the ejection channel, an individual electrode electrically separated from the common electrode and disposed on a sidewall of the non-ejection channel, a common electrode pad disposed on the first surface and adapted to electrically connect the common electrode and the wiring board to each other, and a bypass interconnection adapted to electrically connect the individual electrodes in the non-ejection channels adjacent to each other and failing to be exposed on the first surface.