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公开(公告)号：US20240246337A1
公开(公告)日：2024-07-25
申请号：US18415706
申请日：2024-01-18
申请人： Takahiro YOSHIDA
发明人： Takahiro YOSHIDA
IPC分类号： B41J2/14
CPC分类号： B41J2/14274 , B41J2002/14306 , B41J2002/14419
摘要： A liquid discharge head includes a nozzle plate, a channel substrate, a frame, and a vibration attenuator. The nozzle plate has multiple nozzles from which a liquid is discharged in a liquid discharge direction. The channel substrate has multiple individual liquid chambers communicating with the multiple nozzles, respectively. The frame has a first end adjacent to the channel substrate, a second end opposite the first end in the liquid discharge direction, and a common liquid chamber between the first end and the second end and communicating with the multiple individual liquid chambers. The vibration attenuator is disposed between the first end and the second end in the common liquid chamber. The vibration attenuator has a through hole through which the liquid flows in the common liquid chamber.
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公开(公告)号：US20230302801A1
公开(公告)日：2023-09-28
申请号：US18123373
申请日：2023-03-20
申请人： Takahiro YOSHIDA
发明人： Takahiro YOSHIDA
CPC分类号： B41J2/1433 , B41J2/145
摘要： A liquid discharge head includes: a nozzle plate having multiple nozzles arrayed at a predetermined pitch (d) corresponding to a recording resolution in a longitudinal direction of the nozzle plate. The multiple nozzles are divided into P number of sub-nozzle groups, each of the P number of sub-nozzle groups including the multiple nozzles as multiple sub-nozzles, where P is an integer of one or more, the multiple sub-nozzles are arrayed in the longitudinal direction at a first interval of (d×P), and each of the P number of sub-nozzle groups includes sub-nozzle rows each including the multiple sub-nozzles arrayed at the first interval of in the longitudinal direction and in a first inclination direction inclined relative to the longitudinal direction and a transverse direction orthogonal to the longitudinal direction.
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公开(公告)号：US20230302798A1
公开(公告)日：2023-09-28
申请号：US18118141
申请日：2023-03-07
申请人： Satomi ARAKI , Takahiro YOSHIDA
发明人： Satomi ARAKI , Takahiro YOSHIDA
IPC分类号： B41J2/14
CPC分类号： B41J2/1433
摘要： A liquid discharge head includes: a nozzle plate having multiple nozzles on a plane of the nozzle plate in a first direction and a second direction orthogonal to the first direction; and a nozzle plate holder adjacent to the nozzle plate in the first direction and configured to hold the nozzle plate, wherein the multiple nozzles in the nozzle plate are arrayed in a third direction inclined with the first direction to form a nozzle array, multiple nozzle arrays, including the nozzle array, arrayed in the nozzle plate in a fourth direction inclined with respect to the second direction, and the nozzle plate has: a nozzle-plate short side inclined with respect to the second direction; and a nozzle-plate long side intersecting the nozzle-plate short side and along the fourth direction, and the nozzle-plate short side and the nozzle-plate long side form an acute angle θ1.
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公开(公告)号：US20200238696A1
公开(公告)日：2020-07-30
申请号：US16728015
申请日：2019-12-27
申请人： Takahiro YOSHIDA
发明人： Takahiro YOSHIDA
IPC分类号： B41J2/14
摘要： A liquid discharge head includes a plurality of nozzles through which a liquid is discharged, the plurality of nozzles arrayed in a nozzle array direction, a plurality of pressure chambers respectively communicating with the plurality of nozzles, a plurality of individual channels respectively communicating with the plurality of pressure chambers, a common channel communicating with each of the plurality of individual channels, an individual-channel member including the plurality of pressure chambers and the plurality of individual channels, a common-channel member including the common channel, and a partition between the individual-channel member and the common-channel member. The partition includes a plurality of through-hole regions each connecting the common channel and the plurality of individual channels, and a plurality of recoverably-deformable regions facing the common channel.
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公开(公告)号：US20190283414A1
公开(公告)日：2019-09-19
申请号：US16356021
申请日：2019-03-18
申请人： Takahiro YOSHIDA
发明人： Takahiro YOSHIDA
IPC分类号： B41J2/045
摘要： A liquid discharge device includes a liquid discharge head including a plurality of liquid chambers respectively communicating with a plurality of nozzles and circulating liquid therethrough. Each liquid chamber is provided with a pressure generator for discharging the liquid from a corresponding nozzle. The liquid discharge device further includes a waveform data memory to store drive waveform data including discharge drive waveform data for discharging the liquid according to image data and micro-vibration drive waveform data for causing a micro vibration of a meniscus of the liquid discharge head. The liquid discharge device further includes circuitry configured to generate a drive waveform based on the drive waveform data; apply, to the pressure generator, a discharge drive waveform based on the discharge drive waveform data, in a printing area; and apply, to the pressure generator, a micro-vibration drive waveform based on the micro-vibration drive waveform data, in a non-print area.
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公开(公告)号：US20190240978A1
公开(公告)日：2019-08-08
申请号：US16237798
申请日：2019-01-02
申请人： Koji KAWAHARA , Takahiro YOSHIDA
发明人： Koji KAWAHARA , Takahiro YOSHIDA
摘要： A liquid discharge head includes a plurality of nozzles to discharge a liquid, a plurality of individual chambers communicating with the plurality of nozzles, respectively, a supply-side common chamber communicating with each of the plurality of individual chambers, and a recovery-side common chamber communicating with each of the plurality of individual chambers. The supply-side common chamber and a part of the recovery-side common chamber are aligned in a longitudinal direction of the plurality of individual chambers orthogonal to a nozzle array direction along Which the plurality of nozzles is arrayed.
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公开(公告)号：US20180154657A1
公开(公告)日：2018-06-07
申请号：US15823733
申请日：2017-11-28
申请人： Masato IIO , Takahiro YOSHIDA
发明人： Masato IIO , Takahiro YOSHIDA
IPC分类号： B41J11/00 , B41J2/18 , B41J2/045 , B41J2/14 , C09D11/101
摘要： An inkjet recording apparatus is provided. The inkjet recording apparatus includes a curable ink and a discharge head. The curable ink comprises a polymer having a polyester structural unit. The discharge head includes an individual liquid chamber including a circulation channel in which the curable ink is circulatable, and a nozzle from which the curable ink is dischargeable.
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38.发明申请公开(公告)号：US20170342286A1
公开(公告)日：2017-11-30
申请号：US15601283
申请日：2017-05-22
IPC分类号： C09D11/322 , C09D11/324 , C09D11/02 , B41J2/015 , B41J2/315 , B41J2/135 , C09D11/326 , C09D11/32
CPC分类号： C09D11/322 , C09D11/326 , C09D11/38
摘要： An ink is provided. The ink includes a quinacridone pigment and an organic solvent having a solubility parameter of from 9.00 to 11.80 in an amount of from 30% to 60% by mass of total mass of the ink. Both a viscosity change rate and a particle diameter change rate of the ink, before and after the ink is heated at 80° C. for 4 weeks in a sealed state, are in the range of from −5% to 1%.
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39.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：US20170239949A1
公开(公告)日：2017-08-24
申请号：US15434479
申请日：2017-02-16
申请人： Takahiro YOSHIDA
发明人： Takahiro YOSHIDA
IPC分类号： B41J2/14
CPC分类号： B41J2/14233 , B41J2/14274 , B41J2002/14419 , B41J2202/12
摘要： A liquid discharge head includes a plurality of nozzles, a plurality of individual liquid chambers, a circulation channel, a circulation common liquid chamber, a common liquid chamber, and a vibration damping member. The plurality of nozzles discharges liquid. The plurality of individual liquid chambers is communicated with the plurality of nozzles. The circulation channel is communicated with the plurality of individual liquid chambers. The circulation common liquid chamber is communicated with the circulation channel. The common liquid chamber supplies the liquid to the plurality of individual liquid chambers. The common liquid chamber includes a first portion disposed side by side with the circulation common liquid chamber in an in-plane direction and a second portion having a width greater than a width of the first portion in the in-plane direction. The vibration damping member is recoverably deformable and constitutes a wall surface of the second portion of the common liquid chamber.
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