公开(公告)号：US11192366B2

公开(公告)日：2021-12-07

申请号：US16934684

申请日：2020-07-21

Applicant: SEIKO EPSON CORPORATION

Inventor： Hiroaki Okui ,  Eiju Hirai ,  Toru Kashimura ,  Yuki Watanabe

IPC: B41J2/14 ,  B41J2/155 ,  B41J2/045

Abstract: A length of a path between the input section and the third energy generation element in the wiring section is shorter than a length of a path between the input section and the first energy generation element in the wiring section and shorter than a length of a path between the input section and the second energy generation element in the wiring section.

公开(公告)号：US10919295B2

公开(公告)日：2021-02-16

申请号：US16581822

申请日：2019-09-25

Applicant: Seiko Epson Corporation

Inventor： Toru Kashimura ,  Yuki Watanabe

IPC: B41J2/045 ,  B41J2/14

Abstract: A liquid ejecting apparatus includes a liquid discharging head having a nozzle and a piezoelectric element, a driving signal generating circuit, a reference voltage signal generating circuit, a substrate on which the driving signal generating circuit and the reference voltage signal generating circuit are provided, a first wire, a second wire, and a coil, in which the driving signal generating circuit generates a driving signal, the reference voltage signal generating circuit generates a reference voltage signal, the piezoelectric element is driven based on the driving signal supplied to one end of the piezoelectric element and the reference voltage signal supplied to the other end of the piezoelectric element, the first wire propagates the driving signal to the one end, and the second wire propagates the reference voltage signal to the other end through the coil.

公开(公告)号：US11077659B2

公开(公告)日：2021-08-03

申请号：US16581831

申请日：2019-09-25

Applicant: Seiko Epson Corporation

Inventor： Tom Kashimura ,  Yuki Watanabe

IPC: B41J2/14 ,  B41J2/045

Abstract: A liquid ejecting apparatus includes a liquid discharging head having a first nozzle and a first piezoelectric element, a first driving signal generating circuit, a substrate on which the first driving signal generating circuit is provided, a first wire, and a first coil, in which the first driving signal generating circuit generates a first driving signal, the first piezoelectric element is driven based on the first driving signal to discharge liquid from the first nozzle, and the first wire is electrically coupled to the first driving signal generating circuit and propagates the first driving signal to the first piezoelectric element through the first coil.

公开(公告)号：US11214058B2

公开(公告)日：2022-01-04

申请号：US17080354

申请日：2020-10-26

Applicant: SEIKO EPSON CORPORATION

Inventor： Yuki Watanabe ,  Hirofumi Teramae

IPC: B41J29/38 ,  B41J2/045

Abstract: A liquid ejecting apparatus includes a first ejector; a common driving signal generator configured to generate a common driving signal having a pressure generation pulse including a first element maintained at a first potential, a second element succeeding the first element and maintained at a second potential different from the first potential, and a third element succeeding the second element and maintained at a third potential different from the second potential; a selection control signal generator configured to generate a selection control signal including a first pulse and a second pulse succeeding the first pulse in a time period corresponding to the second element; and a driving waveform selector configured to supply the second potential of the second element to the pressure generating element of the first ejector at the time of the generation of a pulse selected from the first and second pulses of the selection control signal.

公开(公告)号：US12145363B2

公开(公告)日：2024-11-19

申请号：US17949304

申请日：2022-09-21

Applicant: SEIKO EPSON CORPORATION

Inventor： Yuki Watanabe ,  Akira Miyagishi ,  Akinori Taniuchi

IPC: B41J2/045

Abstract: A liquid ejection apparatus is configured to control a supply of a drive signal to a drive element by a controller so that a target period is either an ejection period or a non-ejection period based on print data. The drive signal includes an ejection pulse and a non-ejection pulse. The controller: does not supply the non-ejection pulse to the drive element when the target period is the non-ejection period and an elapsed time length from the last ejection period is less than the predetermined time length, and supplies the non-ejection pulse to the drive element when the target period is the non-ejection period and the elapsed time length is equal to or longer than the predetermined time length. The predetermined time length is an integral multiple or more of ½ of a natural vibration cycle of a meniscus of a liquid in the nozzle.

公开(公告)号：US11260661B2

公开(公告)日：2022-03-01

申请号：US17173540

申请日：2021-02-11

Applicant: SEIKO EPSON CORPORATION

Inventor： Yuki Watanabe ,  Akira Miyagishi ,  Akinori Taniuchi

IPC: B41J2/14 ,  B41J2/175

Abstract: A width of the first nozzle channel in the first direction is larger than a width of the first communication channel in the second direction and a width of the first nozzle channel in a third direction intersecting the first direction and the second direction is smaller than a width of the first communication channel in the third direction.