公开(公告)号：US12049085B2

公开(公告)日：2024-07-30

申请号：US17873348

申请日：2022-07-26

Applicant: SII Printek Inc.

Inventor： Yosuke Shinano

IPC: B41J2/165

CPC classification number: B41J2/16552

Abstract: There is provided a cleaning device for a liquid jet head which can efficiently clean a jet plate attached with a guard member while preventing cleaning liquid from being leaked along an opening of the guard member. The cleaning device for the inkjet head includes a holder moving relatively to the inkjet head, wherein the holder includes a jet section for jetting the cleaning liquid toward a nozzle guard of the inkjet head, a wipe part which has a width in a width direction perpendicular to a moving direction of the holder smaller than a width of an opening of the nozzle guard, and which wipes a nozzle plate due to a movement of the holder, a first suction section disposed ahead of the jet section and the wipe part in the moving direction of the holder, and a second suction section disposed posterior to the jet section and the wipe part in the moving direction of the holder.

公开(公告)号：US20240173965A1

公开(公告)日：2024-05-30

申请号：US18386523

申请日：2023-11-02

Applicant: SII Printek Inc.

Inventor： Kensuke YOSHIDA ,  Toshiaki WATANABE

IPC: B41J2/045

CPC classification number: B41J2/04541 ,  B41J2002/14491

Abstract: There are provided a drive device and so on capable of improving the reliability. A drive device according to an embodiment of the present disclosure is a drive device configured to generate a drive signal to be applied to a liquid jet head having a plurality of nozzles, the drive device including a plurality of drive terminals which is arranged along a longitudinal direction of the drive device, and which is configured to individually output the drive signal for jetting liquid from the nozzles, and at least one dummy terminal configured to electrically be coupled to a predetermined constant potential. The plurality of drive terminals is divided into a plurality of drive terminal groups arranged along the longitudinal direction, and the dummy terminal is arranged at at least one of intervals between the plurality of drive terminal groups.

公开(公告)号：US11964484B2

公开(公告)日：2024-04-23

申请号：US17971222

申请日：2022-10-21

Applicant: SII Printek Inc.

Inventor： Yuzuru Kubota

IPC: B41J2/14 ,  B41J25/304

CPC classification number: B41J2/14314 ,  B41J25/304

Abstract: The area necessary to install the liquid jet head to be positioned by a positioning mechanism is reduced. An inkjet head is provided with a head main body for jetting ink, a base member which supports the head main body, and is installed on an installation surface of a carriage, and a positioning mechanism which adjusts a position of the base member in a direction along the installation surface with respect to a positioning pin disposed on the installation surface, wherein the positioning mechanism is supported by the base member, and at least a part of the positioning mechanism is arranged inside an outer shape of the base member in a plan view of the installation surface viewed from a vertical direction thereof.

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：US20240100828A1

公开(公告)日：2024-03-28

申请号：US18471956

申请日：2023-09-21

Applicant: SII Printek Inc.

Inventor： Yuichi TAKAHAMA

IPC: B41J2/14 ,  B41J2/16 ,  B41J29/377

CPC classification number: B41J2/1408 ,  B41J2/14201 ,  B41J2/14314 ,  B41J2/1601 ,  B41J2/1607 ,  B41J2/1623 ,  B41J29/377

Abstract: An occurrence of leakage is prevented. An inkjet head jets ink. The inkjet head is provided with a head main body, a cooling pipe, a jet-side coupling member, and a cooling-side coupling member, wherein the head main body has a jet flow path through which the ink passes, the cooling pipe has a cooling flow path through which the ink passes as a cooling medium for cooling a drive circuit, the jet-side coupling member is coupled to the head main body, a jet-side branch path branches from an ink flow path into which the ink inflows from an outside of the inkjet head, or from which the ink outflows, the jet-side branch path is communicated with the jet flow path, the jet-side branch path is provided to the jet-side coupling member, and the cooling-side coupling member is coupled to the jet-side coupling member, and is provided with a cooling-side branch path which branches from the ink flow path, and which is communicated with the cooling flow path. The cooling-side coupling member has a coupling surface along one surface of the jet-side coupling member, and along a direction perpendicular to the cooling pipe.

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：US11919291B2

公开(公告)日：2024-03-05

申请号：US17549238

申请日：2021-12-13

Applicant: SII Printek Inc.

Inventor： Takayuki Shimizu ,  Masakazu Hirata

IPC: B41J2/195 ,  B41F31/00 ,  B41F33/16

CPC classification number: B41F31/005 ,  B41F33/16 ,  B41J2/195

Abstract: There are provided a characteristic table generation system and so on capable of enhancing the convenience of the user. The characteristic table generation system according to an embodiment of the present disclosure is a system for generating a predictive voltage characteristic table for defining a predictive characteristic curve, the system including a data acquisition section configured to obtain a measured viscosity characteristic table defining a measured characteristic curve between viscosity and temperature of the liquid, and a predetermined parameter separately, as input data, a conversion coefficient generation section configured to generate a conversion coefficient used when performing a conversion process from the measured characteristic curve into the predictive characteristic curve based on the predetermined parameter using a first analytical method as a predetermined analytical method which takes the predetermined parameter as an explanatory variable, and which takes the conversion coefficient as an objective variable, and a table generation section configured to perform the conversion process using the measured viscosity characteristic table and the conversion coefficient generated by the conversion coefficient generation section to thereby generate the predictive voltage characteristic table.

公开(公告)号：US20230191782A1

公开(公告)日：2023-06-22

申请号：US18080489

申请日：2022-12-13

Applicant: SII Printek Inc.

Inventor： Hitoshi NAKAYAMA

IPC: B41J2/14

CPC classification number: B41J2/14201

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：US11673387B2

公开(公告)日：2023-06-13

申请号：US17085086

申请日：2020-10-30

Applicant: SII PRINTEK INC.

Inventor： Takayuki Shimizu

IPC: B41J29/38 ,  B41J2/045

CPC classification number: B41J2/04588 ,  B41J2/04581

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. First timing as expansion start timing of the volume of the pressure chamber by the first pulse and second timing as contraction start timing of the volume of the pressure chamber by the second pulse are adjacent to each other, and both of the first timing and the second timing are located in a period between two consecutive extremal values of the plurality of extremal values.

公开(公告)号：US11654683B2

公开(公告)日：2023-05-23

申请号：US17523605

申请日：2021-11-10

Applicant: SII PRINTEK INC.

Inventor： Yuzuru Kubota ,  Satoshi Horiguchi ,  Tomoaki Hoshi

IPC: B41J2/14 ,  B41J2/16

CPC classification number: B41J2/1433 ,  B41J2/1623 ,  B41J2002/14467

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.