公开(公告)号：US10207509B2

公开(公告)日：2019-02-19

申请号：US15258394

申请日：2016-09-07

Applicant: Toshimichi Odaka ,  Takahiro Yoshida ,  Takayuki Nakai

Inventor： Toshimichi Odaka ,  Takahiro Yoshida ,  Takayuki Nakai

IPC: B41J2/17 ,  B41J2/18 ,  B41J2/185 ,  B41J2/175

Abstract: A liquid discharge head includes a nozzle, an individual liquid chamber, and a circulation channel. The nozzle discharges liquid. The individual liquid chamber is communicated with the nozzle. The circulation channel is communicated with the individual liquid chamber. A first direction in which liquid flows in the individual liquid chamber crosses a second direction in which liquid flows in the circulation channel. A liquid-inflow-side opening of the nozzle faces an area in which a flow of liquid changes from the first direction to the second direction.

公开(公告)号：US20180194135A1

公开(公告)日：2018-07-12

申请号：US15844831

申请日：2017-12-18

Applicant: Masami IWAMA ,  Yukio OTOME ,  Takahiro YOSHIDA ,  Takakazu KIHIRA ,  Takayuki NAKAI ,  Shiomi ANDOU ,  Isamu SUZUKI ,  Ryuji YOSHIDA ,  Kanshi ABE ,  Junichi IWATA ,  Katsuya ISHll ,  Toshimichi ODAKA

Inventor： Masami IWAMA ,  Yukio OTOME ,  Takahiro YOSHIDA ,  Takakazu KIHIRA ,  Takayuki NAKAI ,  Shiomi ANDOU ,  Isamu SUZUKI ,  Ryuji YOSHIDA ,  Kanshi ABE ,  Junichi IWATA ,  Katsuya ISHll ,  Toshimichi ODAKA

IPC: B41J2/14 ,  B41J2/17 ,  B41J2/175

CPC classification number: B41J2/14233 ,  B41J2/14274 ,  B41J2/1721 ,  B41J2/175 ,  B41J2/17503 ,  B41J2002/14258 ,  B41J2002/14403 ,  B41J2002/14467 ,  B41J2202/12

Abstract: A liquid discharge head includes a plurality of nozzles from which liquid is discharged, a plurality of individual-liquid-chambers communicating with the plurality of nozzles, respectively, a plurality of individual-drainage-channels communicating with the plurality of individual-liquid-chambers, respectively, a drainage-side common-liquid-chamber communicating with each of the plurality of individual-drainage-channels, a filter having filter holes and disposed between the plurality of individual-drainage-channels and the drainage-side common-liquid-chamber, and an intermediate-drainage-channel disposed between the filter and the plurality of individual-drainage-channels. The intermediate-drainage-channel faces the filter and communicates with two or more of the plurality of individual-drainage-channels. A cross-sectional area of the intermediate-drainage-channel is greater than a cross-sectional area of each of the plurality of individual-drainage-channels communicating with the intermediate-drainage-channel in a direction perpendicular to a direction of liquid flow.

公开(公告)号：US10737491B2

公开(公告)日：2020-08-11

申请号：US16274380

申请日：2019-02-13

Applicant: Toshimichi Odaka ,  Takahiro Yoshida ,  Takakazu Kihira

Inventor： Toshimichi Odaka ,  Takahiro Yoshida ,  Takakazu Kihira

IPC: B41J2/14 ,  B41J2/175 ,  B41J2/185 ,  B41J2/165 ,  B41J2/18

Abstract: A liquid discharge head includes a plurality of nozzles, a plurality of individual liquid chambers, a common supply channel, and a common collection channel. The plurality of nozzles discharges a liquid. The plurality of individual liquid chambers communicates with the plurality of nozzles, respectively. The common supply channel communicates with the plurality of individual liquid chambers. The common collection channel communicates with the plurality of individual liquid chambers. At least a part of at least one of the common supply channel and the common collection channel is disposed at a position overlapping with the plurality of individual liquid chambers when the plurality of individual liquid chambers is projected in a vertical direction.

公开(公告)号：US20180272730A1

公开(公告)日：2018-09-27

申请号：US15920612

申请日：2018-03-14

Applicant: Toshimichi ODAKA ,  Takahiro YOSHIDA ,  Takakazu KIHIRA ,  Takayuki NAKAI

Inventor： Toshimichi ODAKA ,  Takahiro YOSHIDA ,  Takakazu KIHIRA ,  Takayuki NAKAI

IPC: B41J2/175 ,  B41J2/14

CPC classification number: B41J2/17563 ,  B41J2/14274 ,  B41J2/1433 ,  B41J2/175 ,  B41J2/18 ,  B41J2002/14403 ,  B41J2202/12 ,  B41J2202/20 ,  B41J2202/21

Abstract: A liquid discharge head, includes a nozzle from which liquid is discharged, an individual chamber communicating with the nozzle, a supply channel communicating with the individual chamber, the liquid flowing through the supply channel in a first direction, and a filter disposed upstream of the supply channel, the liquid filtering through the filter in a second direction. The first direction intersects the second direction, and the supply channel includes an inlet disposed at a position overlapping the filter in the second direction.

公开(公告)号：US20170157924A1

公开(公告)日：2017-06-08

申请号：US15358486

申请日：2016-11-22

Applicant: Yukio OTOME ,  Takahiro YOSHIDA ,  Takayuki NAKAI ,  Shiomi ANDOU ,  Kanshi ABE ,  Kenshiroh MUNETOMO ,  Toshimichi ODAKA

Inventor： Yukio OTOME ,  Takahiro YOSHIDA ,  Takayuki NAKAI ,  Shiomi ANDOU ,  Kanshi ABE ,  Kenshiroh MUNETOMO ,  Toshimichi ODAKA

IPC: B41J2/14

CPC classification number: B41J2/1433 ,  B41J2/14233 ,  B41J2/14274 ,  B41J2002/14306 ,  B41J2002/14419 ,  B41J2202/11

Abstract: A liquid discharge head includes a channel plate. The channel plate includes a fluid restrictor, a channel, a first plate member, and a second plate member. The channel is disposed on at least one of an upstream side and a downstream side of the fluid restrictor in a direction of flow of liquid. The channel has a greater width than a width of the fluid restrictor in a direction perpendicular to the direction of flow of liquid in an in-plane direction. The first plate member has a through hole including at least one broad portion and a narrow portion. The narrow portion is the fluid restrictor. The second plate member includes at least one through hole constituting part of the channel with the broad portion. The through hole is disposed opposite an end of the narrow portion at which the narrow portion is connected to the broad portion.

公开(公告)号：US20200276818A1

公开(公告)日：2020-09-03

申请号：US16800982

申请日：2020-02-25

Applicant: Toshimichi ODAKA ,  Yoshitaka FUJINUMA ,  Koji KAWAHARA

Inventor： Toshimichi ODAKA ,  Yoshitaka FUJINUMA ,  Koji KAWAHARA

IPC: B41J2/165 ,  B41J2/14

Abstract: A liquid discharge head includes a nozzle, a cover, a connector board, and a cap. The nozzle is configured to discharge liquid. The cover covers at least a part of the liquid discharge head except the nozzle. The connector board includes a connector, and a first engaging portion. The connector is detachably connected to a wiring component. The first engaging portion is configured to engage the cover in a first direction. The cap is detachably attached to the cover. The cap includes an opening and a second engaging portion. The opening is configured to engage at least one of the connector and the connector board in a second direction intersecting the first direction and expose at least a part of the connector. The second engaging portion is configured to engage the cover in a third direction.

公开(公告)号：US10160216B2

公开(公告)日：2018-12-25

申请号：US15333389

申请日：2016-10-25

Applicant: Takayuki Nakai ,  Takahiro Yoshida ,  Shiomi Andou ,  Toshimichi Odaka ,  Kanshi Abe

Inventor： Takayuki Nakai ,  Takahiro Yoshida ,  Shiomi Andou ,  Toshimichi Odaka ,  Kanshi Abe

IPC: B41J2/175 ,  B41J2/18 ,  B41J2/19 ,  B41J2/14

Abstract: A droplet discharge head includes a plurality of discharge orifices, a plurality of pressure generation chambers, a supply liquid chamber, a plurality of supply channels, a circulation liquid chamber, and a plurality of circulation channels. The discharge orifices discharge droplets. The pressure generation chambers are communicated with the discharge orifices, to apply pressure to liquid in the pressure generation chambers. The supply liquid chamber stores liquid to be supplied to the pressure generation chambers. The supply channels are communicated with the pressure generation chambers. The circulation liquid chamber receives liquid collected from the pressure generation chambers. The circulation channels communicate the pressure generation chambers with the circulation liquid chamber. Each of the circulation channels includes a small cross-section portion that has a smaller cross-sectional area in a width direction perpendicular to a longitudinal direction of each of the circulation channels than another portion in the longitudinal direction.

公开(公告)号：US20170120602A1

公开(公告)日：2017-05-04

申请号：US15333389

申请日：2016-10-25

Applicant: Takayuki NAKAI ,  Takahiro YOSHIDA ,  Shiomi ANDOU ,  Toshimichi ODAKA ,  Kanshi ABE

Inventor： Takayuki NAKAI ,  Takahiro YOSHIDA ,  Shiomi ANDOU ,  Toshimichi ODAKA ,  Kanshi ABE

IPC: B41J2/175

CPC classification number: B41J2/175 ,  B41J2/14233 ,  B41J2202/12

Abstract: A droplet discharge head includes a plurality of discharge orifices, a plurality of pressure generation chambers, a supply liquid chamber, a plurality of supply channels, a circulation liquid chamber, and a plurality of circulation channels. The discharge orifices discharge droplets. The pressure generation chambers are communicated with the discharge orifices, to apply pressure to liquid in the pressure generation chambers. The supply liquid chamber stores liquid to be supplied to the pressure generation chambers. The supply channels are communicated with the pressure generation chambers. The circulation liquid chamber receives liquid collected from the pressure generation chambers. The circulation channels communicate the pressure generation chambers with the circulation liquid chamber. Each of the circulation channels includes a small cross-section portion that has a smaller cross-sectional area in a width direction perpendicular to a longitudinal direction of each of the circulation channels than another portion in the longitudinal direction.

公开(公告)号：US20240391236A1

公开(公告)日：2024-11-28

申请号：US18660280

申请日：2024-05-10

Applicant: Toshimichi ODAKA

Inventor： Toshimichi ODAKA

IPC: B41J2/14

Abstract: A liquid discharge head includes a nozzle plate, a channel plate, and a common channel substrate. The nozzle plate has multiple nozzles from each of which a liquid is dischargeable. The multiple nozzles are arrayed in a nozzle array direction. The channel plate has multiple pressure chambers arrayed in the nozzle array direction in a pressure chamber area. The multiple pressure chambers respectively communicate with the multiple nozzles. The common channel substrate has a common supply channel communicating with each of the multiple pressure chambers, a common collection channel communicating with each of the multiple pressure chambers, and a communication channel disposed outside the pressure chamber area in the nozzle array direction. The communication channel connects the common supply channel and the common collection channel outside the pressure chamber area and bypass the multiple pressure chambers.

公开(公告)号：US10259231B2

公开(公告)日：2019-04-16

申请号：US15920612

申请日：2018-03-14

Applicant: Toshimichi Odaka ,  Takahiro Yoshida ,  Takakazu Kihira ,  Takayuki Nakai

Inventor： Toshimichi Odaka ,  Takahiro Yoshida ,  Takakazu Kihira ,  Takayuki Nakai

IPC: B41J2/14 ,  B41J2/175 ,  B41J2/18

Abstract: A liquid discharge head, includes a nozzle from which liquid is discharged, an individual chamber communicating with the nozzle, a supply channel communicating with the individual chamber, the liquid flowing through the supply channel in a first direction, and a filter disposed upstream of the supply channel, the liquid filtering through the filter in a second direction. The first direction intersects the second direction, and the supply channel includes an inlet disposed at a position overlapping the filter in the second direction.