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公开(公告)号：US20180272730A1
公开(公告)日：2018-09-27
申请号：US15920612
申请日：2018-03-14
CPC分类号： B41J2/17563 , B41J2/14274 , B41J2/1433 , B41J2/175 , B41J2/18 , B41J2002/14403 , B41J2202/12 , B41J2202/20 , B41J2202/21
摘要： 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.
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公开(公告)号：US20170157924A1
公开(公告)日：2017-06-08
申请号：US15358486
申请日：2016-11-22
申请人： Yukio OTOME , Takahiro YOSHIDA , Takayuki NAKAI , Shiomi ANDOU , Kanshi ABE , Kenshiroh MUNETOMO , Toshimichi ODAKA
发明人： Yukio OTOME , Takahiro YOSHIDA , Takayuki NAKAI , Shiomi ANDOU , Kanshi ABE , Kenshiroh MUNETOMO , Toshimichi ODAKA
IPC分类号： B41J2/14
CPC分类号： B41J2/1433 , B41J2/14233 , B41J2/14274 , B41J2002/14306 , B41J2002/14419 , B41J2202/11
摘要： 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.
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公开(公告)号：US20180194135A1
公开(公告)日：2018-07-12
申请号：US15844831
申请日：2017-12-18
申请人： Masami IWAMA , Yukio OTOME , Takahiro YOSHIDA , Takakazu KIHIRA , Takayuki NAKAI , Shiomi ANDOU , Isamu SUZUKI , Ryuji YOSHIDA , Kanshi ABE , Junichi IWATA , Katsuya ISHll , Toshimichi ODAKA
发明人： Masami IWAMA , Yukio OTOME , Takahiro YOSHIDA , Takakazu KIHIRA , Takayuki NAKAI , Shiomi ANDOU , Isamu SUZUKI , Ryuji YOSHIDA , Kanshi ABE , Junichi IWATA , Katsuya ISHll , Toshimichi ODAKA
CPC分类号： B41J2/14233 , B41J2/14274 , B41J2/1721 , B41J2/175 , B41J2/17503 , B41J2002/14258 , B41J2002/14403 , B41J2002/14467 , B41J2202/12
摘要： 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.
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公开(公告)号：US20170120602A1
公开(公告)日：2017-05-04
申请号：US15333389
申请日：2016-10-25
申请人： Takayuki NAKAI , Takahiro YOSHIDA , Shiomi ANDOU , Toshimichi ODAKA , Kanshi ABE
发明人： Takayuki NAKAI , Takahiro YOSHIDA , Shiomi ANDOU , Toshimichi ODAKA , Kanshi ABE
IPC分类号： B41J2/175
CPC分类号： B41J2/175 , B41J2/14233 , B41J2202/12
摘要： 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.
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公开(公告)号：US20170096015A1
公开(公告)日：2017-04-06
申请号：US15258394
申请日：2016-09-07
IPC分类号： B41J2/18
CPC分类号： B41J2/1707 , B41J2/14274 , B41J2/175 , B41J2/17509 , B41J2/18 , B41J2/185 , B41J2002/1856 , B41J2202/12
摘要： 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.
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公开(公告)号：US20170087865A1
公开(公告)日：2017-03-30
申请号：US15256785
申请日：2016-09-06
申请人： Takahiro YOSHIDA , Tomohiko KOHDA , Takayuki NAKAI
发明人： Takahiro YOSHIDA , Tomohiko KOHDA , Takayuki NAKAI
IPC分类号： B41J2/175
CPC分类号： B41J2/17563 , B41J2/14274 , B41J2/175 , B41J2/17509 , B41J2/18 , B41J2002/14403 , B41J2202/12
摘要： A liquid discharge head includes a plurality of nozzles, a plurality of individual liquid chambers, a common liquid chamber, a common circulation liquid chamber, and a filter portion. The common liquid chamber includes a first portion disposed side by side with the common circulation liquid chamber in a direction perpendicular to a nozzle array direction in and a second portion not disposed side by side with the common circulation liquid chamber in the direction perpendicular to the nozzle array direction. In a plan view, the second portion partially overlaps the common circulation liquid chamber in the direction perpendicular to the nozzle array direction. A width of the second portion in the direction perpendicular to the nozzle array direction is greater than a width of the first portion in the direction perpendicular to the nozzle array direction. In the plan view, the filter portion is disposed in the second portion.
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公开(公告)号：US20210178776A1
公开(公告)日：2021-06-17
申请号：US17183740
申请日：2021-02-24
申请人： Tomohiko KOHDA , Takahiro YOSHIDA , Shiomi ANDOU , Takayuki NAKAI , Kanshi ABE , Takeshi SHIMIZU , Ryo KASAHARA
发明人： Tomohiko KOHDA , Takahiro YOSHIDA , Shiomi ANDOU , Takayuki NAKAI , Kanshi ABE , Takeshi SHIMIZU , Ryo KASAHARA
摘要： A liquid discharging head includes a nozzle plate having a plurality of nozzles from which liquid is discharged; a plurality of individual liquid chambers that are communicably connected to the plurality of nozzles, respectively; a common liquid chamber that supplies liquid to the plurality of individual liquid chambers; and a circulation common liquid chamber that leads to a plurality of circulation channels. A part of the common liquid chamber overlaps the circulation common liquid chamber from a direction in which liquid is discharged from the nozzles, and another part of the common liquid chamber overlaps the circulation common liquid chamber from a direction orthogonal to both the direction in which liquid is discharged from the nozzles and a direction in which the nozzles are aligned.
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公开(公告)号：US20200331262A1
公开(公告)日：2020-10-22
申请号：US16847827
申请日：2020-04-14
申请人： Shiomi ANDOU , Takahiro YOSHIDA , Takayuki NAKAI
发明人： Shiomi ANDOU , Takahiro YOSHIDA , Takayuki NAKAI
摘要： A liquid discharge head includes a plurality of nozzles to discharge liquid, a plurality of pressure chambers communicating with the nozzles, a plurality of individual flow paths communicating with the plurality of pressure chambers, and a common flow path communicating with the plurality of individual flow paths. Further, each individual flow path includes a first flow path portion and a second flow path portion each having a fluid resistance higher than a fluid resistance of a pressure chamber of the plurality of pressure chambers that communicates with the individual flow path, and a third flow path portion disposed between the first flow path portion and the second flow path portion, the third flow path portion having a fluid resistance lower than the fluid resistance of the first flow path portion and the third resistance of the second flow path portion.
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公开(公告)号：US20200282740A1
公开(公告)日：2020-09-10
申请号：US16881276
申请日：2020-05-22
申请人： Tomohiko KOHDA , Takahiro YOSHIDA , Shiomi ANDOU , Takayuki NAKAI , Kanshi ABE , Takeshi SHIMIZU , Ryo KASAHARA
发明人： Tomohiko KOHDA , Takahiro YOSHIDA , Shiomi ANDOU , Takayuki NAKAI , Kanshi ABE , Takeshi SHIMIZU , Ryo KASAHARA
摘要： A liquid discharging head includes a nozzle plate having a plurality of nozzles from which liquid is discharged; a plurality of individual liquid chambers that are communicably connected to the plurality of nozzles, respectively; a common liquid chamber that supplies liquid to the plurality of individual liquid chambers; and a circulation common liquid chamber that leads to a plurality of circulation channels. A part of the common liquid chamber overlaps the circulation common liquid chamber from a direction in which liquid is discharged from the nozzles, and another part of the common liquid chamber overlaps the circulation common liquid chamber from a direction orthogonal to both the direction in which liquid is discharged from the nozzles and a direction in which the nozzles are aligned.
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公开(公告)号：US20180257374A1
公开(公告)日：2018-09-13
申请号：US15981763
申请日：2018-05-16
申请人： Takahiro YOSHIDA , Tomohiko KOHDA , Takeshi SHIMIZU , Kanshi ABE , Ryo KASAHARA , Takayuki NAKAI , Shiomi ANDOU
发明人： Takahiro YOSHIDA , Tomohiko KOHDA , Takeshi SHIMIZU , Kanshi ABE , Ryo KASAHARA , Takayuki NAKAI , Shiomi ANDOU
IPC分类号： B41J2/14
摘要： A liquid ejection head is provided. The liquid ejection head includes at least two nozzle lines configured to have a plurality of nozzles for ejecting liquid disposed in respective lines, a plurality of individual liquid chambers configured to be in communication with corresponding nozzles of the nozzle lines, and at least two circulation channels corresponding to the nozzle lines, configured to be in communication with the individual liquid chambers. The at least two circulation channels are in communication with each other through a bridging channel disposed in a direction intersecting with the nozzle line direction, and the bridging channel and the circulation channels are disposed at different positions in a thickness direction of a member which forms the bridging channel and the circulation channels.
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