公开(公告)号：US20210162757A1

公开(公告)日：2021-06-03

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：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：US20200269569A1

公开(公告)日：2020-08-27

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：US10710366B2

公开(公告)日：2020-07-14

申请号：US16189330

申请日：2018-11-13

Applicant: SII Printek Inc.

Inventor： Masakazu Hirata ,  Kenji Takano ,  Emiko Osaka

IPC: B41J2/14 ,  B41J2/165 ,  B41J2/16 ,  B41J2/21

Abstract: Provided herein are a jet hole plate, a liquid jet head, and a liquid jet recording apparatus that can achieve a long life. A jet hole plate according to an embodiment of the present disclosure is a jet hole plate for use in a liquid jet head. The jet hole plate includes a metal substrate provided with a plurality of jet holes. In the metal substrate, an average crystal grain size in outlet edges of the jet holes is smaller than that in surrounding regions around the outlet edges.

公开(公告)号：US10688782B2

公开(公告)日：2020-06-23

申请号：US16181653

申请日：2018-11-06

Applicant: SII Printek Inc.

Inventor： Naohiro Tomita ,  Yuki Yamamura ,  Masaru Midorikawa ,  Shuji Sato ,  Shunsuke Yamazaki

IPC: B41J2/04 ,  B41J2/045 ,  B41J2/14

Abstract: There are provided a liquid jet head and a liquid jet recording device capable of enhancing the reliability. A liquid jet head according to an embodiment of the disclosure includes a liquid jet section from which liquid is jetted, an electronic control section electrically connected to the liquid jet section, a main protective member adapted to cover a periphery of the electronic control section, a connection section attached to the electronic control section and adapted to electrically connect an outside of the liquid jet head and the electronic control section to each other, and a connection section protective member configured so as to make a state transition between a protection state of covering the connection section and an exposure state of exposing the connection section.

公开(公告)号：US10589524B2

公开(公告)日：2020-03-17

申请号：US15842203

申请日：2017-12-14

Applicant: SII Printek Inc.

Inventor： Takayuki Shimizu

IPC: B41J2/045

Abstract: Reduction of the size of the droplet in 1-drop ejection is easily performed. A liquid jet head according to an example of the disclosure includes a nozzle adapted to jet a liquid, a piezoelectric actuator having a pressure chamber communicated with the nozzle and filled with the liquid, and adapted to vary a capacity of the pressure chamber, and a control section adapted to apply a pulse signal to the piezoelectric actuator to thereby expand and contract the capacity of the pressure chamber so as to jet the liquid filling the pressure chamber. The control section applies the pulse signal adapted to expand the capacity in the pressure chamber when jetting 1 drop of the liquid so as to include a first pulse signal having a pulse width one of equal to or shorter than an on-pulse peak, and a second pulse signal disposed with a predetermined time interval from the first pulse signal.

公开(公告)号：US10583676B2

公开(公告)日：2020-03-10

申请号：US16176648

申请日：2018-10-31

Applicant: SII Printek Inc.

Inventor： Yuki Yamamura ,  Masaru Midorikawa ,  Naohiro Tomita ,  Shunsuke Yamazaki ,  Shuji Sato

IPC: B41J2/14 ,  B41J29/377 ,  B41J2/175

Abstract: A liquid jet head and a liquid jet recording device capable of accurately detecting the temperature of the ink are provided. A liquid jet head according to an embodiment of the disclosure includes a flow channel member provided with a flow channel of a liquid, and having a high heat conduction part disposed so as to have contact with the liquid flowing inside the flow channel, and a low heat conduction part having lower thermal conductivity than thermal conductivity of the high heat conduction part, a temperature detection element disposed outside the flow channel, and attached to the high heat conduction part, and a liquid jet section from which the liquid is jetted.

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：US10350889B2

公开(公告)日：2019-07-16

申请号：US15855138

申请日：2017-12-27

Applicant: SII Printek Inc.

Inventor： Daiki Irokawa

IPC: B41J2/14 ,  B41J2/045

Abstract: There are provided a liquid jet head and a liquid jet recording device each capable of appropriately cutting off the liquid column formed immediately after being jetted from the jet hole to prevent the satellite droplet from generating, and further achieving easier maintenance of the jet hole part. The liquid jet head includes a drive actuator, a jet hole plate, and a flow channel operating actuator. The drive actuator applies a pressure variation to a liquid filled therein. The jet hole plate is disposed on a downstream side of the drive actuator and adapted to jet the liquid having flown out from the drive actuator from the jet hole to the outside of the drive actuator. The flow channel operating actuator is disposed between the drive actuator and the jet hole plate, provided with a communication section adapted to communicate the drive actuator and the jet hole with each other, and has a configuration capable of performing a displacing operation on at least a part of the peripheral edge part of the communication section.

公开(公告)号：US20190143684A1

公开(公告)日：2019-05-16

申请号：US16187023

申请日：2018-11-12

Applicant: SII Printek Inc.

Inventor： Shutaro YAMAMOTO ,  Daichi NISHIKAWA ,  Emiko OSAKA

IPC: B41J2/14 ,  B41J2/045

Abstract: There are provided a liquid jet head and a liquid jet recording device capable of enhancing the reliability. A liquid jet head according to an embodiment of the disclosure is a liquid jet head adapted to jet a liquid including an actuator plate having a plurality of ejection grooves each filled with the liquid, and a nozzle plate having a plurality of nozzle holes individually communicated with the respective ejection grooves, formed so as to have a profile smaller than a profile of the actuator plate, and bonded to the actuator plate so as to cover the plurality of ejection grooves, wherein a predetermined mark with which a position of the nozzle plate with respect to the actuator plate is checked is formed in an area outside a part corresponding to an outer periphery of the nozzle plate on a bonding surface of the actuator plate with the nozzle plate.