Patents Assigned to SII Printek Inc.
  • Patent number: 11760105
    Abstract: There are provided a head chip, a liquid jet head, and a liquid jet recording device each capable of ensuring sufficient ejection pressure. The head chip according to an aspect of the present disclosure is provided with an actuator plate provided with first ejection channels and second ejection channels, and a feedback plate disposed on a lower end surface of the actuator plate. The first ejection channels are each surrounded by a pair of upstream drive walls opposed to each other in an X direction. The second ejection channels are each surrounded by a pair of downstream drive walls opposed to each other in the X direction.
    Type: Grant
    Filed: December 16, 2021
    Date of Patent: September 19, 2023
    Assignee: SII PRINTEK INC.
    Inventor: Yuzuru Kubota
  • Patent number: 11697285
    Abstract: The head chip includes an actuator plate having ejection channels and non-ejection channels extending in a Y direction and arranged alternately in an X direction, an intermediate plate overlapped with the actuator plate in a Z direction, and provided with communication holes communicated with the ejection channels and through holes communicated with the non-ejection channels, and a nozzle plate overlapped with the intermediate plate in the Z direction in a state of closing the through holes, and provided with nozzle holes which are communicated with the communication holes, jet liquid contained in the ejection channels, and are formed at positions corresponding to the ejection channels. The non-ejection channels are communicated with an outside of the head chip. The through holes are each disposed at an inner side in the X direction of the inner surfaces extending in the Y direction of the non-ejection channel viewed from the Z direction.
    Type: Grant
    Filed: December 3, 2021
    Date of Patent: July 11, 2023
    Assignee: SII PRINTEK INC.
    Inventor: Satoshi Horiguchi
  • Patent number: 11673387
    Abstract: There are provided a liquid jet head and so on capable of ensuring the ejection stability of the liquid even when jetting the liquid high in viscosity irrespective of the structure of the liquid jet head. The liquid jet head according to an embodiment of the present disclosure includes a plurality of nozzles, an actuator having a plurality of pressure chambers, and a drive section for applying a drive signal to the actuator. The plurality of pulses in the drive signal include at least one first pulse configured to expand the volume of the pressure chamber, and at least one second pulse configured to contract the volume of the pressure chamber, and the pressure in the pressure chamber changes with time including a plurality of extremal values in one cycle.
    Type: Grant
    Filed: October 30, 2020
    Date of Patent: June 13, 2023
    Assignee: SII PRINTEK INC.
    Inventor: Takayuki Shimizu
  • Patent number: 11660860
    Abstract: A liquid jet head and so on capable of reducing both of a manufacturing cost and power consumption are provided. The liquid jet head according to an embodiment of the present disclosure is provided with a jet section and at least one drive board. The drive board is provided with a first input terminal and a second input terminal, a plurality of drive devices, a plurality of transmission lines, and a plurality of terminal resistors. The drive devices each have a first input/output section and a second input/output section. The plurality of drive devices include a first drive device and a second drive device. The plurality of transmission lines include a first transmission line, a second transmission line, and at least one third transmission line. The plurality of termination resistors include a first termination resistor, a second termination resistor, and a third termination resistor.
    Type: Grant
    Filed: September 17, 2021
    Date of Patent: May 30, 2023
    Assignee: SII PRINTEK INC.
    Inventor: Kensuke Yoshida
  • Patent number: 11654683
    Abstract: There are provided a head chip, a liquid jet head, a liquid jet recording device, and a method of manufacturing the head chip each capable of preventing the short circuit of electrodes by ink to maintain an excellent ejection performance over a long period of time. The head chip according to an aspect of the present disclosure includes an actuator plate, a cover plate, and an intermediate plate. In the actuator plate, open apertures which communicate an inside and an outside of a non-ejection channel with each other are formed in both end portions of the non-ejection channel in a Y direction. In the actuator plate, open apertures which communicate an inside and an outside of a non-ejection channel with each other are formed in both end portions of the non-ejection channel in the Y direction.
    Type: Grant
    Filed: November 10, 2021
    Date of Patent: May 23, 2023
    Assignee: SII PRINTEK INC
    Inventors: Yuzuru Kubota, Satoshi Horiguchi, Tomoaki Hoshi
  • Patent number: 11654676
    Abstract: There are provided a liquid jet head and so on capable of enhancing the convenience. The liquid jet head according to an embodiment of the present disclosure includes a jet section, a plurality of drive boards, at least one drive device, a waveform setting section, a control switch section, an external control line in which first control communication is performed, an internal control line in which second control communication is performed, and a plurality of drive control lines in which third control communication is individually performed. The waveform setting section generates second waveform configuration information for setting the drive waveform based on first waveform configuration information transmitted from the outside of the liquid jet head using the first control communication.
    Type: Grant
    Filed: October 8, 2021
    Date of Patent: May 23, 2023
    Assignee: SII PRINTEK INC.
    Inventor: Kensuke Yoshida
  • Patent number: 11548284
    Abstract: Isolation between electrodes is ensured to enhance resistance to a liquid. A conductive film is provided to a surface of a piezoelectric substrate, and laser processing is performed in a groove extending direction on the conductive film between a first groove and a second groove provided to the piezoelectric substrate to thereby form a laser processing area where the conductive film is removed to the surface of the piezoelectric substrate between the first groove and the second groove. In forming the laser processing area, an irradiation operation with a laser is performed along a plurality of laser processing lines extending in the groove extending direction.
    Type: Grant
    Filed: December 16, 2020
    Date of Patent: January 10, 2023
    Assignee: SII PRINTEK INC.
    Inventors: Suguru Munakata, Daichi Nishikawa, Yuzuru Kubota, Yuki Yamamura, Yuji Nakamura
  • Patent number: 11548283
    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.
    Type: Grant
    Filed: October 31, 2019
    Date of Patent: January 10, 2023
    Assignee: SII PRINTEK INC.
    Inventors: Suguru Munakata, Yuji Nakamura, Yuzuru Kubota, Daiki Irokawa
  • Patent number: 11491787
    Abstract: There are provided a head chip and so on capable of improving the print image quality. The head chip according to an embodiment of the present disclosure is provided with an actuator plate having a plurality of ejection grooves and a nozzle plate having a plurality of nozzle holes individually communicated with the plurality of ejection grooves. The plurality of ejection grooves is arranged side by side so as to at least partially overlap each other along a predetermined direction. Further, the nozzle holes adjacent to each other along the predetermined direction out of the plurality of nozzle holes are arranged so as to be shifted from each other along an extending direction of the ejection grooves in the nozzle plate.
    Type: Grant
    Filed: November 24, 2020
    Date of Patent: November 8, 2022
    Assignee: SII PRINTEK INC.
    Inventors: Tomoki Ai, Yuki Yamamura, Masakazu Hirata, Kenji Suzuki
  • Patent number: 11400716
    Abstract: A stress caused in an actuator member with respect to input or output of heat is reduced. There is provided a liquid jet head including an actuator member having a pressure chamber, a low rigidity support part which is disposed at one side with respect to the actuator member, and is coupled to the actuator member, and a high rigidity support part which is disposed at the other side opposite to the one side with respect to the actuator member, and is coupled to the actuator member.
    Type: Grant
    Filed: December 15, 2020
    Date of Patent: August 2, 2022
    Assignee: SII PRINTEK INC.
    Inventor: Kenji Suzuki
  • Patent number: 11318766
    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.
    Type: Grant
    Filed: September 30, 2020
    Date of Patent: May 3, 2022
    Assignee: SII PRINTEK INC.
    Inventor: Takanori Koyano
  • Patent number: 11285718
    Abstract: A liquid jet head and a liquid jet recording device capable of reducing the installation area of the liquid jet head are provided. The liquid jet head according to an embodiment of the present disclosure is to be installed in a carriage of the liquid jet recording device. The liquid jet head includes a jet section provided with a nozzle hole configured to jet liquid, a support member configured to support the jet section, and provided with a hole part including a through hole penetrating in a jet direction of the liquid, a biasing member disposed in the hole part, and configured to bias the support member toward the carriage, and a biased member which is disposed at a predetermined position with respect to the carriage, and is biased in the hole part by the biasing member to thereby set a position of the nozzle hole with respect to the carriage.
    Type: Grant
    Filed: June 4, 2020
    Date of Patent: March 29, 2022
    Assignee: SII PRINTEK INC.
    Inventors: Masatoshi Seki, Takanori Koyano, Masaru Midorikawa
  • Patent number: 11254132
    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.
    Type: Grant
    Filed: November 25, 2020
    Date of Patent: February 22, 2022
    Assignee: SII PRINTEK INC.
    Inventors: Masakazu Hirata, Yuzuru Kubota, Yuki Yamamura, Tomoki Ai
  • Patent number: 11247453
    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.
    Type: Grant
    Filed: February 26, 2020
    Date of Patent: February 15, 2022
    Assignee: SII PRINTEK INC.
    Inventors: Kensuke Yoshida, Toshiaki Watanabe
  • Patent number: 11225079
    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.
    Type: Grant
    Filed: November 25, 2020
    Date of Patent: January 18, 2022
    Assignee: SII PRINTEK INC.
    Inventors: Masakazu Hirata, Kenji Suzuki, Masanori Tamura
  • Patent number: 11173707
    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.
    Type: Grant
    Filed: February 21, 2020
    Date of Patent: November 16, 2021
    Assignee: SII Printek Inc.
    Inventors: Toshiaki Watanabe, Kensuke Yoshida
  • Patent number: 11072176
    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.
    Type: Grant
    Filed: November 6, 2019
    Date of Patent: July 27, 2021
    Assignee: SII PRINTEK INC.
    Inventors: Hitoshi Nakayama, Yuji Nakamura, Yuki Yamamura, Mizuki Kudo
  • Patent number: 11020968
    Abstract: There are provided a head chip and a method of manufacturing the same, a liquid jet head, and a liquid jet recording device each capable of suppressing a stray capacitance to improve the image quality. The head chip according to an embodiment of the present disclosure is a head chip having an actuator plate adapted to apply pressure to liquid to jet the liquid.
    Type: Grant
    Filed: October 31, 2019
    Date of Patent: June 1, 2021
    Assignee: SII PRINTEK INC.
    Inventors: Tomoki Ai, Yuki Yamamura, Tooru Mine
  • Patent number: 10967636
    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.
    Type: Grant
    Filed: November 27, 2019
    Date of Patent: April 6, 2021
    Assignee: SII PRINTEK INC.
    Inventor: Hitoshi Nakayama
  • Patent number: 10933637
    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.
    Type: Grant
    Filed: August 5, 2019
    Date of Patent: March 2, 2021
    Assignee: SII Printek Inc.
    Inventor: Shunsuke Yamazaki