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：US20210162756A1

公开(公告)日：2021-06-03

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：US20230142135A1

公开(公告)日：2023-05-11

申请号：US17983268

申请日：2022-11-08

Applicant: SII Printek Inc.

Inventor： Takayuki SHIMIZU ,  Masakazu HIRATA

IPC: B41J2/14

CPC classification number: B41J2/14201 ,  B41J2002/14362 ,  B41J2002/14491

Abstract: A jet parameter generation system according to an embodiment of the present disclosure includes a data acquisition section, and a parameter generation section for generating a predetermined jet parameter, using a predetermined analytical method of taking a predetermined input parameter as an explanatory variable and taking a predetermined jet parameter as an objective variable. The parameter generation section determines which one of a first standard for setting a voltage value with which a drop volume of the liquid to be a reference is obtained and a second standard for setting a voltage value with which an ejection speed of the liquid to be a reference is obtained is to be selected, selects a first explanatory variable group when determining to select the first standard, while selecting a second explanatory variable group when determined to select the second standard, and uses the predetermined analytical method using just selected one of the first explanatory variable group and the second explanatory variable group to thereby generate the predetermined jet parameter.

公开(公告)号：US20190143686A1

公开(公告)日：2019-05-16

申请号：US16189330

申请日：2018-11-13

Applicant: SII Printek Inc.

Inventor： Masakazu HIRATA ,  Kenji TAKANO ,  Emiko OSAKA

IPC: B41J2/14

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：US20220184941A1

公开(公告)日：2022-06-16

申请号：US17549238

申请日：2021-12-13

Applicant: SII Printek Inc.

Inventor： Takayuki SHIMIZU ,  Masakazu HIRATA

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

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：US20190143693A1

公开(公告)日：2019-05-16

申请号：US16189367

申请日：2018-11-13

Applicant: SII Printek Inc.

Inventor： Emiko OSAKA ,  Masakazu HIRATA ,  Shutaro YAMAMOTO ,  Kenji TAKANO ,  Takashi HITOMI

IPC: B41J2/16

Abstract: Provided herein is a method for manufacturing a jet hole plate that can improve ejection stability and head durability. A method for manufacturing a jet hole plate according to an embodiment of the present disclosure includes a punching step of pressing a first principal surface of a metal substrate with a punch to form an indentation in the first principal surface, and to form a raised portion in a second principal surface of the metal substrate at a position opposite to the indentation; a first polishing step of removing the raised portion by mechanical polishing to penetrate the metal substrate at the indentation to thereby form a jet hole; and a second polishing step of polishing at least one of the first principal surface and the second principal surface of the metal substrate by chemical polishing, electrolytic polishing, or chemical-mechanical polishing.

公开(公告)号：US20190143692A1

公开(公告)日：2019-05-16

申请号：US16189290

申请日：2018-11-13

Applicant: SII Printek Inc.

Inventor： Masakazu HIRATA ,  Kenji TAKANO ,  Tomoki SODETAI

IPC: B41J2/16

Abstract: Provided herein are a jet hole plate, a liquid jet head, a liquid jet recording apparatus, and a method for manufacturing a jet hole plate 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 having provided therein a plurality of jet holes. The metal substrate has a principal surface having outlets for the jet holes. The principal surface has a surface roughness (arithmetic mean roughness Ra) that is smaller in outlet edge regions of the jet holes than in surrounding regions around the outlet edge regions.