公开(公告)号：US20210129542A1

公开(公告)日：2021-05-06

申请号：US17083913

申请日：2020-10-29

Applicant: SEIKO EPSON CORPORATION

Inventor： Kenji OTOKITA ,  Norihiro MASUDA

IPC: B41J2/17 ,  B41J2/175

Abstract: A printer includes a transport unit, a first head, a second head disposed downstream of the first head, a first suction unit configured to suction ink mist discharged from the first head, a second suction unit configured to suction ink mist discharged from the second head, and a suction device coupled to the first suction unit and the second suction unit, and configured to generate an airflow for suctioning the ink mist, and a first suction device disposed either one of on a first path from the first suction unit to the suction device, and at the suction device, and configured to adjust a flow rate at the first suction unit, and a second suction device disposed either one of on a second path from the second suction unit to the suction device, and at the suction device, and configured to adjust the flow rate at the second suction unit.

公开(公告)号：US20180272713A1

公开(公告)日：2018-09-27

申请号：US15922450

申请日：2018-03-15

Applicant: SEIKO EPSON CORPORATION

Inventor： Kenji OTOKITA ,  Seiji IHARA

IPC: B41J2/165 ,  B41J2/125 ,  B41J19/18 ,  B41J11/42 ,  B41J25/308 ,  B41J29/38 ,  B41J13/00 ,  B65H7/02 ,  G06K15/16

CPC classification number: B41J2/165 ,  B41J2/125 ,  B41J2/17546 ,  B41J11/0095 ,  B41J11/42 ,  B41J13/0018 ,  B41J19/18 ,  B41J25/308 ,  B41J29/38 ,  B65H7/02 ,  B65H2553/26 ,  G06K15/16

Abstract: A plate-like detection plate portion that undergoes strain due to contact with an object is used for detecting the presence of an object that can come into contact with a liquid ejecting unit with relative movement between a medium and the liquid ejecting unit, and is provided with a piezoelectric film sensor that outputs an electric signal corresponding to strain of the detection plate portion. The piezoelectric film sensor includes a detection film portion in which a piezoelectric element that causes a voltage change corresponding to the strain is arranged, and an output circuit portion that converts the voltage change of the detection film portion into an electric signal and outputs the electric signal. The output circuit portion is provided on a second plate surface, which is a rear surface of a first plate surface facing the medium, of the detection plate portion.

公开(公告)号：US20150062226A1

公开(公告)日：2015-03-05

申请号：US14471478

申请日：2014-08-28

Applicant: Seiko Epson Corporation

Inventor： Kenji OTOKITA

IPC: B41J2/045

CPC classification number: B41J2/04541 ,  B41J2/0451 ,  B41J2/04581 ,  B41J2/14233 ,  B41J2/14274

Abstract: There is provided a line printer including: a nozzle that discharges liquid; a pressure chamber that communicates with the nozzle; a piezoelectric element that is provided to correspond to the pressure chamber and to discharge liquid; a pulse generation unit that generates a drive pulse to discharge liquid from the nozzle and an inspection pulse to inspect a liquid discharge state; and a residual vibration detection unit that detects residual vibration in the pressure chamber, which occurs after the inspection pulse is applied to the piezoelectric element. The drive pulse is caused to be applied to the piezoelectric element and the inspection pulse is caused not to be applied to the piezoelectric element at a first printing speed. The drive pulse and the inspection pulse are caused to be applied to the piezoelectric element at a second printing speed. The second printing speed is slower than the first printing speed.

Abstract translation: 提供了一种行式打印机，包括：排出液体的喷嘴; 与喷嘴连通的压力室; 压电元件，其设置成对应于所述压力室并排出液体; 脉冲发生单元，其产生用于从喷嘴排出液体的驱动脉冲和检查脉冲以检查液体排出状态; 以及残余振动检测单元，其检测在将所述检查脉冲施加到所述压电元件之后发生的压力室中的残余振动。 使驱动脉冲施加到压电元件，并且使检查脉冲不以第一打印速度施加到压电元件。 使驱动脉冲和检查脉冲以第二打印速度施加到压电元件。 第二次打印速度比第一次打印速度慢。

公开(公告)号：US20240326460A1

公开(公告)日：2024-10-03

申请号：US18614873

申请日：2024-03-25

Applicant: SEIKO EPSON CORPORATION

Inventor： Kenji OTOKITA

IPC: B41J2/21 ,  B41J2/145 ,  B41J11/00 ,  B41J25/00 ,  C09D11/101

CPC classification number: B41J2/2107 ,  B41J2/145 ,  B41J11/00214 ,  B41J25/001 ,  C09D11/101

Abstract: A printing device includes a head unit; a movement section configured to relative movement of the print medium and the head unit; an irradiation sections of ultraviolet rays; and a storage section, wherein it has, as nozzle rows, a first nozzle row which ejects the first ink of the first color and a second nozzle row which ejects the second ink of the first color having different characteristics from the first ink, the storage section is configured to store a plurality of print modes in which having different ratios between the print duty of the first ink and the print duty of the second ink, and when print data includes first color data to be printed using ultraviolet curable ink of the first color, it is configured to distribute into the first ink and the second ink based on the ratio of a selected print mode and then print.

公开(公告)号：US20150231907A1

公开(公告)日：2015-08-20

申请号：US14614835

申请日：2015-02-05

Applicant: SEIKO EPSON CORPORATION

Inventor： Kenji OTOKITA ,  Shinya KOMATSU

IPC: B41J29/393

CPC classification number: B41J29/393 ,  B41J2/0451 ,  B41J2/04541 ,  B41J2/04578 ,  B41J2/1652 ,  B41J2/16526 ,  B41J2/16538 ,  B41J2/16579 ,  B41J2/175 ,  B41J29/38 ,  B41J2002/14354

Abstract: A liquid discharge device includes a head having a piezoelectric element that vibrates a vibrating plate, a pressure chamber for which the internal pressure is increased and decreased by vibration of the vibrating plate, and a nozzle in communication with the pressure chamber, that can discharge a liquid by increasing and decreasing the pressure of the pressure chamber, a drive unit that outputs drive signals to the piezoelectric element, a testing unit that tests discharge abnormality of the nozzle based on a vibration pattern of residual vibration inside the pressure chamber that occurs due to the drive signals, and a control unit that has the drive unit output a second drive signal after having it output a first drive signal, and that has the testing unit detect the discharge abnormality of the nozzle after the second drive signal is output.

Abstract translation: 液体排出装置包括具有使振动板振动的压电元件的头部，通过振动板的振动使内部压力增加和减小的压力室，以及与压力室连通的喷嘴， 液体，通过增加和减小压力室的压力;驱动单元，其将驱动信号输出到压电元件;测试单元，其基于压力室内的残余振动的振动模式来测试喷嘴的排出异常， 所述驱动信号和所述驱动单元在输出第一驱动信号之后输出第二驱动信号的控制单元，并且所述测试单元在输出所述第二驱动信号之后检测所述喷嘴的放电异常。

公开(公告)号：US20150191021A1

公开(公告)日：2015-07-09

申请号：US14587162

申请日：2014-12-31

Applicant: SEIKO EPSON CORPORATION

Inventor： Shinya KOMATSU ,  Kenji OTOKITA

IPC: B41J2/175

CPC classification number: B41J2/17566 ,  B41J2/0451 ,  B41J2/04541 ,  B41J2/04581 ,  B41J2/14274 ,  B41J2/175 ,  B41J2/18 ,  B41J29/38 ,  B41J2002/14354 ,  B41J2202/12 ,  B41J2202/20

Abstract: A liquid discharge apparatus is provided with a cavity which is configured to be filled with an ink, an ink supply path configured to supply the ink to the cavity, a nozzle linked with the cavity and configured to discharge the ink which is filled into the cavity, and a detecting section configured to detect the state of the ink supply path which is supplied based on the amount of the ink which is filled into a plurality of the nozzles.

Abstract translation: 液体排出装置设置有被构造成填充有墨水的空腔，被配置为将墨水供应到空腔的墨水供应路径，与空腔连接并被配置为将填充到空腔中的墨水排出 以及检测部，其被配置为基于填充到多个喷嘴中的墨的量来检测供给路径的状态。

公开(公告)号：US20150174899A1

公开(公告)日：2015-06-25

申请号：US14575732

申请日：2014-12-18

Applicant: SEIKO EPSON CORPORATION

Inventor： Kenji OTOKITA

IPC: B41J2/045

CPC classification number: B41J2/04588 ,  B41J2/04581 ,  B41J2/04596

Abstract: It is possible to generate an ejection driving pulse which ejects ink, and a plurality of minute vibration driving pulses which cause a pressure fluctuation in ink in a pressurizing chamber to an extent of not causing the ink to be ejected; the ejection driving pulse includes a first expansion element which causes the pressurizing chamber to be expanded by being changed from a reference potential to a first potential which is lower than the reference potential, and a first contraction element which causes the pressurizing chamber to be contracted by being changed from the first potential to the reference potential; and the minute vibration driving pulse includes a second contraction element which causes the pressurizing chamber to be contracted by being changed from a second potential which is lower than the reference potential to a third potential which is higher than the second potential and the first potential, and is lower than the reference potential, and a second expansion element which causes the pressurizing chamber to be expanded by being changed from the third potential to the second potential.

Abstract translation: 可以产生喷射墨水的喷射驱动脉冲和使加压室内墨水的压力波动导致不喷墨的程度的多个微小的振动驱动脉冲; 喷射驱动脉冲包括第一膨胀元件，其通过从参考电位变化到低于参考电位的第一电位而使加压室膨胀;以及第一收缩元件，其使加压室收缩 从第一个潜力转变为参考潜力; 并且微小振动驱动脉冲包括第二收缩元件，该第二收缩元件通过从低于基准电位的第二电位变为高于第二电位和第一电位的第三电位而使加压室收缩，以及 低于参考电位的第二膨胀元件，以及通过从第三电位变为第二电位而使加压室膨胀的第二膨胀元件。

公开(公告)号：US20140125722A1

公开(公告)日：2014-05-08

申请号：US14072006

申请日：2013-11-05

Applicant: SEIKO EPSON CORPORATION

Inventor： Kenji OTOKITA

IPC: B41J2/125

CPC classification number: B41J2/0451 ,  B41J2/04581 ,  B41J2/04595 ,  B41J2/04596

Abstract: A liquid ejecting apparatus includes a piezoelectric element, a nozzle that ejects a liquid in association with the driving of the piezoelectric element, a driving signal generation unit that generates a driving signal for driving a plurality of the piezoelectric elements, and a residual vibration detection unit that detects residual vibration generated by the driving of the piezoelectric element. The driving signal includes an ejection pulse for ejecting a liquid, a first vibration damping pulse that suppresses residual vibration generated by the ejection pulse, a second vibration damping pulse which is a pulse different from the first vibration damping pulse and suppresses residual vibration generated by the ejection pulse, and an inspection pulse for detecting the residual vibration signal.

Abstract translation: 一种液体喷射装置，包括压电元件，与压电元件的驱动相关联地喷射液体的喷嘴;产生用于驱动多个压电元件的驱动信号的驱动信号生成单元，以及残留振动检测单元 其检测由压电元件的驱动产生的残余振动。 驱动信号包括用于喷射液体的喷射脉冲，抑制由喷射脉冲产生的残余振动的第一减振脉冲，与第一减振脉冲不同的脉冲的第二减振脉冲，并抑制由第一减振脉冲产生的残余振动 喷射脉冲和用于检测残余振动信号的检查脉冲。

公开(公告)号：US20230066383A1

公开(公告)日：2023-03-02

申请号：US17822820

申请日：2022-08-29

Applicant: SEIKO EPSON CORPORATION

Inventor： Kenji OTOKITA ,  Nobuyuki HAYASAKA

IPC: B41J11/00 ,  B41F23/00

Abstract: A recording device, when recording is performed on a predetermined type target recording medium stored in a storage unit, drives a surface potential adjustment unit so that a surface potential is a positive potential within a predetermined range. By configuring such a recording device, it is possible to suppress adhesion of ink to an ejecting unit, and occurrence of an ink ejection failure can be suppressed.

公开(公告)号：US20200307221A1

公开(公告)日：2020-10-01

申请号：US16832957

申请日：2020-03-27

Applicant: SEIKO EPSON CORPORATION

Inventor： Norihiro MASUDA ,  Kenji OTOKITA

IPC: B41J2/165 ,  B41J11/00

Abstract: A printing apparatus is provided that includes a line type printing head ejecting an UV ink onto a base material, an ultraviolet irradiator disposed downstream of the printing head, a mist retrieving section having a suction port and disposed between the printing head and the ultraviolet irradiator, and a control unit, wherein when printing is performed, the control unit adjusts, in accordance with a transport speed of the base material, at least one of a gap A, a gap B, and a suction air volume of the mist retrieving section such that a direction of an airflow passing through a gap between the base material and the ultraviolet irradiator is opposite the transport direction of the base material. The gap A is a gap between the printing head and the mist retrieving section, and the gap B is a gap between the base material and the suction port.