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1.发明申请公开(公告)号：US20170253062A1
公开(公告)日：2017-09-07
申请号：US15439327
申请日：2017-02-22
IPC分类号： B41J29/377
CPC分类号： B41J29/377 , B41J2/14024 , B41J2/1408 , B41J2/14201 , B41J2/14314 , B41J2002/14362 , B41J2202/08
摘要： A liquid-discharging head includes a pressure-generating element configured to be actuated to apply pressure on liquid in a pressure chamber from which the liquid is discharged through a nozzle, an actuation controller configured to control actuation of the pressure-generating element, a heat-releasing member configured to contact the actuation controller, and a cover member configured to cover the actuation controller and part of the heat-releasing member. The heat-releasing member includes a first heat-releasing member and a second heat-releasing member. The first heat-releasing member is arranged outside the cover member and has a surface exposed to external air. The second heat-releasing member is arranged inside the cover member and has a first end portion to contact the actuation controller. The first heat-releasing member and the second heat-releasing member are arranged to contact each other.
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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：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：US20180272709A1
公开(公告)日：2018-09-27
申请号：US15894996
申请日：2018-02-13
申请人： Junichi IWATA , Takahiro YOSHIDA , Yukio OTOME , Tomoaki MURAKAMI
发明人： Junichi IWATA , Takahiro YOSHIDA , Yukio OTOME , Tomoaki MURAKAMI
摘要： A liquid discharge head includes a nozzle to discharge a liquid, an individual chamber communicating with the nozzle, a supply channel communicating with the individual chamber to supply the liquid to the individual chamber, and a discharge channel communicating with the individual chamber to discharge the liquid in the individual chamber. A fluid resistance of the supply channel is greater than a fluid resistance of the discharge channel.
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公开(公告)号：US20230330999A1
公开(公告)日：2023-10-19
申请号：US18338518
申请日：2023-06-21
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
CPC分类号： B41J2/18 , B41J2/17509 , B41J2/14274 , B41J2/175 , B41J2/17563 , B41J2/14104 , B41J2002/14419 , B41J2202/07 , B41J2202/11 , B41J2202/12 , B41J2002/14403
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：US20220250392A1
公开(公告)日：2022-08-11
申请号：US17660705
申请日：2022-04-26
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：US20220169020A1
公开(公告)日：2022-06-02
申请号：US17516723
申请日：2021-11-02
申请人： Takahiro YOSHIDA
发明人： Takahiro YOSHIDA
IPC分类号： B41J2/045
摘要： A liquid discharge apparatus includes a liquid discharge head configured to discharge a liquid, and a drive waveform generator configured to generate a drive waveform to be applied to the liquid discharge head, the drive waveform including a first discharge pulse to cause the liquid discharge head to discharge the liquid, a second discharge pulse after the first discharge pulse, the second discharge pulse to cause the liquid discharge head to discharge the liquid, and a pulse interval between the first discharge pulse and the second discharge pulse, the pulse interval being equal to a time period in which the liquid is discharged by the second discharge pulse in a damping state in which the second discharge pulse is damped by a meniscus vibration generated by the first discharge pulse.
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公开(公告)号：US20210001629A1
公开(公告)日：2021-01-07
申请号：US16916773
申请日：2020-06-30
申请人： Takahiro YOSHIDA
发明人： Takahiro YOSHIDA
摘要： A liquid discharge apparatus includes a liquid discharge head to discharge liquid and control circuitry to generate a drive waveform including drive pulses applied to the head. The drive waveform includes a non-discharge pulse not to discharge the liquid and a discharge pulse to discharge the liquid. The non-discharge pulse and the discharge pulse are serial in time in the drive waveform. Td is in a range of Tc−0.2×Tc to Tc+0.45×Tc. Vp1 is in a range of −10% to +10% of Vpp1. Td represents a time interval between the non-discharge pulse and the discharge pulse. Tc represents a natural vibration period of a pressure chamber of the head. Vp1 represents a peak value of the non-discharge pulse. Vpp1 represents a peak value of the non-discharge pulse at which a droplet speed of liquid discharged by the discharge pulse takes a local minimum value.
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公开(公告)号：US20190084313A1
公开(公告)日：2019-03-21
申请号：US16191912
申请日：2018-11-15
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 channel member including a plurality of individual liquid chambers that lead to the plurality of nozzles, respectively, and including a plurality of circulation channels that lead to the plurality of individual liquid chambers, respectively; and a common liquid chamber member for forming a common liquid chamber that supplies liquid to the plurality of individual liquid chambers and for forming a circulation common liquid chamber that leads to the plurality of circulation channels.
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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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