公开(公告)号：US20190184390A1

公开(公告)日：2019-06-20

申请号：US16221266

申请日：2018-12-14

Applicant: TOSHIBA TEC KABUSHIKI KAISHA

Inventor： Shuhei YOKOYAMA ,  Ryutaro KUSUNOKI

IPC: B01L3/02 ,  G01N35/10

CPC classification number: B01L3/0268 ,  B01L2200/0605 ,  B01L2300/0829 ,  B01L2300/16 ,  G01N35/10 ,  G01N2035/1041

Abstract: An embodiment comprises a drug solution ejecting device having a pressure chamber including a discharge port on a first side, a supply port on a second side, and an inner wall of the pressure chamber between the first and second sides. An actuator is configured to change pressure to eject a solution from a nozzle via the discharge port. The inner wall of the pressure chamber includes at least a part that is silicon or silicon oxide. As detected by X-rat photoelectron spectroscopy, a surface of the part has a ratio of a total area of peaks of silicon in monovalent, divalent, and trivalent binding states to an area of a peak of silicon in a tetravalent binding state that is greater than a same such ratio of a surface of a silicon wafer having only an untreated natural oxide film formed thereon.

公开(公告)号：US20190060935A1

公开(公告)日：2019-02-28

申请号：US16105225

申请日：2018-08-20

Applicant: TOSHIBA TEC KABUSHIKI KAISHA

Inventor： Shuhei YOKOYAMA ,  Satoshi KAIHO ,  Ryutaro KUSUNOKI ,  Seiya SHIMIZU

IPC: B05B12/00

Abstract: A liquid dispensing apparatus includes a mounting unit on which a liquid discharging device is mounted, a driving circuit to supply driving power to an actuator of the liquid discharging device mounted on the mounting unit, and a controller configured to supply a first control signal to the driving circuit to drive the actuator of the liquid discharging device to discharge a liquid, and supply a second control signal to the driving circuit after a discharge of the liquid to cause the driving circuit to damage the actuator.

公开(公告)号：US20180272345A1

公开(公告)日：2018-09-27

申请号：US15892970

申请日：2018-02-09

Applicant: TOSHIBA TEC KABUSHIKI KAISHA

Inventor： Masaaki HIGUCHI ,  Seiya SHIMIZU ,  Ryutaro KUSUNOKI ,  Shuhei YOKOYAMA

IPC: B01L3/00

CPC classification number: B01L3/502715 ,  B01L3/0268 ,  B01L3/50273 ,  B01L2200/027 ,  B01L2200/0605 ,  B01L2200/061 ,  B01L2200/143 ,  B01L2300/14 ,  B01L2400/0487 ,  G01N2035/1041

Abstract: A droplet dispensing apparatus includes a droplet ejecting array having a plurality of nozzle groups, each nozzle group including a plurality of nozzles arranged in columns in a first direction and rows in a second direction that intersects the first direction, and the plurality of nozzles being arranged in a third direction, a light emitting unit configured to emit light along an optical path in the third direction oblique with respect to the first direction, a light receiving unit configured to receive light from the light emitting unit, the light receiving unit being on an opposite side of the droplet ejecting array from the light emitting unit, and a controller configured to receive signals from the light receiving unit according to light intensity as detected by the light receiving unit, and adjust ejection timings such that each of the plurality of nozzle groups ejects at a different timing.

公开(公告)号：US20180272335A1

公开(公告)日：2018-09-27

申请号：US15890070

申请日：2018-02-06

Applicant: TOSHIBA TEC KABUSHIKI KAISHA

Inventor： Masaaki HIGUCHI ,  Satoshi KAIHO ,  Seiya SHIMIZU ,  Shuhei YOKOYAMA ,  Ryutaro KUSUNOKI

IPC: B01L3/02 ,  B01L9/00 ,  B41J2/14 ,  B41J2/045

CPC classification number: B01L3/0268 ,  B01L3/0237 ,  B01L9/54 ,  B01L2200/0605 ,  B01L2200/143 ,  B01L2300/0816 ,  B41J2/04581 ,  B41J2/14048 ,  B41J2/14153 ,  B41J2/14201 ,  B41J2/1433 ,  B41J2002/14241 ,  B41J2002/14475 ,  B41J2202/11 ,  B41J2202/15 ,  G01N35/1016 ,  G01N35/1065 ,  G01N2035/0432 ,  G01N2035/1018 ,  G01N2035/1041

Abstract: According to one embodiment, a droplet dispensing apparatus includes a droplet ejection array having a plurality of nozzles from which droplets can be ejected into a well opening of a microplate plate on a baseplate, a sensor configured to detect a liquid amount in the microplate, and a controller configured to detect that a nozzle in the plurality of nozzles is not discharging during a droplet ejection process based on an initial liquid amount in the microplate as detected by the sensor and a final liquid amount in the microplate as detected by the sensor during a droplet ejection process in which a predetermined number of droplets are to be ejected from the plurality of nozzles into the microplate.

公开(公告)号：US20180170045A1

公开(公告)日：2018-06-21

申请号：US15693405

申请日：2017-08-31

Applicant: TOSHIBA TEC KABUSHIKI KAISHA

Inventor： MengFei WONG ,  Ryutaro KUSUNOKI ,  Shuhei YOKOYAMA ,  Ryuichi ARAI ,  Masayuki SATOMI

IPC: B41J2/145 ,  B41J2/14

CPC classification number: B41J2/145 ,  B41J2/14 ,  B41J2/14201 ,  B41J2002/1437 ,  B41J2002/14419 ,  B41J2202/11 ,  B41J2202/12 ,  B41J2202/15

Abstract: According to one embodiment, a liquid ejection head includes a first base having a plurality of nozzles from which liquid can be ejected, a second base on the first base and having a plurality of pressure chambers in fluid communication with the plurality of nozzles, and a third base located on the second base, with the second base being interposed between the first and third bases, the third base having a common chamber in fluid communication with the plurality of pressure chambers, an inner wall of the common chamber has an uneven surface portion shaped so as to trap air bubbles entrained in the liquid to be ejected from the plurality of nozzles.

公开(公告)号：US20180169649A1

公开(公告)日：2018-06-21

申请号：US15694974

申请日：2017-09-04

Applicant: TOSHIBA TEC KABUSHIKI KAISHA

Inventor： Shuhei YOKOYAMA ,  Satoshi KAIHO ,  Seiya SHIMIZU ,  Hiroyuki KUSHIDA

IPC: B01L3/00 ,  F04B43/04

CPC classification number: B01L3/502 ,  B01L2300/0829 ,  B01L2300/12 ,  B01L2400/0487 ,  B01L2400/0633 ,  B41J2/14233 ,  B41J2/161 ,  B41J2202/03 ,  B41J2202/15 ,  F04B43/046 ,  F04B2203/0402 ,  H01L41/18

Abstract: According to one embodiment, a liquid medicine discharge device includes a nozzle plate including a nozzle from which a liquid medicine can be discharged, a pressure chamber structure having an outlet on a first surface side and an inlet on a second surface side and a pressure chamber in fluid communication with the nozzle via the outlet on the first side, a liquid holding container on the second surface and in fluid communication with the pressure chamber via the inlet on the second surface, and an actuator configured to cause the liquid medicine to be ejected from the nozzle by changing a pressure in the pressure chamber and including a piezoelectric element formed of a lead-free material.

公开(公告)号：US20180088142A1

公开(公告)日：2018-03-29

申请号：US15684883

申请日：2017-08-23

Applicant: TOSHIBA TEC KABUSHIKI KAISHA

Inventor： Shuhei YOKOYAMA ,  Satoshi KAIHO

IPC: G01N35/10 ,  B01L3/02 ,  G01N35/02

CPC classification number: G01N35/1002 ,  B01L3/0237 ,  B01L3/0268 ,  B01L3/0293 ,  B01L2300/0893 ,  B01L2300/185 ,  G01N35/02 ,  G01N35/1074 ,  G01N35/109 ,  G01N2035/1041

Abstract: According to one embodiment, a droplet ejecting apparatus includes a solution holding container having a solution inlet for receiving a solution on a first side and a plurality of solution outlets on a second side, a plurality of droplet ejecting arrays, each droplet ejecting array being respectively connected to one solution outlet in the plurality of solution outlets, and a first nozzle group in each droplet ejecting array fluidly connected to the respective one solution outlet via a pressure chamber structure.

公开(公告)号：US20180086077A1

公开(公告)日：2018-03-29

申请号：US15685949

申请日：2017-08-24

Applicant: TOSHIBA TEC KABUSHIKI KAISHA

Inventor： Shuhei YOKOYAMA ,  Ryutaro KUSUNOKI ,  Ikuo FUJISAWA

IPC: B41J2/14

CPC classification number: B41J2/14233 ,  B41J2/04581 ,  B41J2/04588 ,  B41J2/14201 ,  B41J2002/14241 ,  B41J2202/11 ,  B41J2202/15

Abstract: A droplet ejecting head includes a board, a pressure chamber, a nozzle, and an actuator configured to cause a pressure change in the pressure chamber in response to an electrical signal supplied from a drive circuit. The drive circuit is configured to set the electrical signal at a first voltage level, change the electrical signal to a second voltage level, set the electrical signal to a third voltage level during a time period after changing the electrical signal from the first voltage level to the second voltage level, the time period being equal to a primary natural oscillation period of the actuator when the pressure chamber and the nozzle are filled with solution, and set the electrical signal to the first voltage level after the time period has elapsed. The third voltage level is between the first and second voltage levels or equal to the second voltage level.

公开(公告)号：US20180085746A1

公开(公告)日：2018-03-29

申请号：US15684643

申请日：2017-08-23

Applicant: TOSHIBA TEC KABUSHIKI KAISHA

Inventor： Shuhei YOKOYAMA ,  Satoshi Kaiho ,  Ryutaro Kusunoki

IPC: B01L3/02 ,  B05C5/02 ,  B05C5/00 ,  B01L3/00

CPC classification number: B01L3/0268 ,  B01L3/50273 ,  B01L2200/12 ,  B01L2200/16 ,  B01L2300/0829 ,  B01L2300/0893 ,  B01L2300/0896 ,  B01L2300/14 ,  B01L2300/18 ,  B01L2400/02 ,  B01L2400/0439 ,  B01L2400/0442 ,  B01L2400/0475 ,  B01L2400/0481 ,  B05C5/001 ,  B05C5/02 ,  B05C5/027 ,  B05C11/1034 ,  B41J2/14201 ,  B41J2002/1437

Abstract: A droplet ejecting apparatus includes a solution container, first and second nozzle groups fluidly connected to the solution container and having nozzles from which the solution can be ejected, first actuators respectively associated with each nozzle in the first nozzle group, second actuators respectively associated with each nozzle in the second nozzle group, and drive circuits respectively connected in a parallel to the first and second actuators. Each nozzle has a pressure chamber associated therewith. Each actuator causes a pressure change in a corresponding pressure chamber to control an ejection of a droplet of the solution from the corresponding nozzle. Each drive circuit is configured to supply a drive signal. When supplied by each drive circuit to the first and second actuators respectively, each drive signal causes solution to be ejected from each nozzle of each respective nozzle group at a same time.

公开(公告)号：US20180065361A1

公开(公告)日：2018-03-08

申请号：US15806453

申请日：2017-11-08

Applicant: TOSHIBA TEC KABUSHIKI KAISHA

Inventor： Shuhei YOKOYAMA ,  Satoshi KAIHO ,  Ikuo FUJISAWA

IPC: B41J2/14 ,  B41J2/045

CPC classification number: B41J2/14 ,  B41J2/04541 ,  B41J2/04581 ,  B41J2/14032 ,  B41J2/14201 ,  B41J2002/14491 ,  B41J2202/15

Abstract: A liquid droplet ejecting apparatus includes a liquid container, a liquid ejection chip that is fixed to a lower surface of the liquid container to receive liquid from the liquid container, and includes a pressure chamber formed therein, a nozzle to eject liquid from the pressure chamber, and an actuator disposed adjacent to the nozzle, a base member having an opening at which the liquid container is fixed such that the nozzle is exposed on a lower surface of the base member, and a circuit substrate fixed to a lower side of the base member and including a wiring electrically connected to the actuator on a lower surface of the circuit substrate.