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公开(公告)号：US10538094B2
公开(公告)日：2020-01-21
申请号：US16023369
申请日：2018-06-29
发明人： Koichi Kubo , Naozumi Nabeshima , Soji Kondo , Kazuya Yoshii , Noriyasu Nagai
摘要： A liquid ejection head includes a pressure adjusting mechanism that communicates with a supply flow path that supplies a liquid to an element substrate including an ejection port ejecting a liquid, and adjusts a pressure of the liquid flowing in the supply flow path, a pressure adjusting mechanism that communicates with a collection flow path that collects a liquid from the element substrate, and adjusts a pressure of the liquid flowing in the collection flow path, and a filter storage chamber including therein a filter that captures foreign matter in the liquid. Further, the liquid ejection head includes upstream flow paths and a connection section that causes the upstream flow paths to communicate with each other, and is provided downstream of the filter.
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公开(公告)号：US10525711B2
公开(公告)日：2020-01-07
申请号：US15807865
申请日：2017-11-09
发明人： Hiromasa Amma , Yukuo Yamaguchi , Toshiaki Hirosawa , Soji Kondo , Takuya Iwano , Noriyasu Nagai
摘要： A method of manufacturing a liquid ejecting head has a first molding step, a step of performing positioning and a second molding step. In the first molding step, a first member, a second member, and a third member are molded by injecting a resin at different locations inside of a set of a fixed mold, an intermediate movable mold, and a movable mold. In the step of performing positioning, the set is detached in a first direction and the intermediate movable mold and the movable mold are moved in a second direction. In the second molding step, a resin is injected to the inside of the set that is clamped to bond. During a period from the first molding step to completion of the second molding step, the first member, the second member, and the third member are held by insert mold pieces used for molding the members, respectively, in the first molding step.
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公开(公告)号：US10471711B2
公开(公告)日：2019-11-12
申请号：US15965682
申请日：2018-04-27
发明人： Seiichiro Karita , Shuzo Iwanaga , Kazuhiro Yamada , Takatsuna Aoki , Shingo Okushima , Zentaro Tamenaga , Yumi Komamiya , Noriyasu Nagai , Tatsurou Mori , Yoshiyuki Nakagawa , Akira Yamamoto
摘要： In a printing apparatus including a circulation system circulating a liquid, a volatile component included in the liquid evaporates from an ejection opening and thus characteristics of the liquid involving with concentration or viscosity change. The invention provides a printing apparatus that uses a liquid ejection head including an ejection opening ejecting a liquid, a print element generating energy for ejecting a liquid, and a pressure chamber having the print element provided therein, the printing apparatus including: a circulator configured to circulate the liquid so that the liquid passes through the pressure chamber; and a concentration adjustment unit configured to adjust a concentration of a liquid inside a liquid circulation system by discharging the liquid from the inside of the liquid circulation system and replenishing the liquid into the liquid circulation system from the outside of the liquid circulation system in response to the amount of the discharged liquid.
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公开(公告)号：US10350885B2
公开(公告)日：2019-07-16
申请号：US15597682
申请日：2017-05-17
发明人： Takatsuna Aoki , Shuzo Iwanaga , Seiichiro Karita , Kazuhiro Yamada , Shingo Okushima , Zentaro Tamenaga , Akira Yamamoto , Tatsurou Mori , Noriyasu Nagai , Akio Saito , Ryo Kasai
摘要： A liquid discharge device performs recording by use of a liquid discharge head including discharge ports to discharge a liquid, pressure generation elements to generate energy to be used to discharge the liquid, and pressure chambers communicating with the discharge ports. The liquid discharge device includes a control unit to control a temperature of the liquid discharge head by applying heat with heating elements arranged in divided areas of a region of the liquid discharge head where the discharge ports are arranged. When there is recording data for the discharge port in a certain one of the divided areas, the control unit causes the heating element in the divided area to generate heat, and when there is no recording data for the discharge port in the certain divided area, the control unit keeps the heating element in the certain divided area from generating heat.
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85.发明授权公开(公告)号：US10293604B2
公开(公告)日：2019-05-21
申请号：US15459408
申请日：2017-03-15
发明人： Takatsuna Aoki , Shuzo Iwanaga , Seiichiro Karita , Kazuhiro Yamada , Shingo Okushima , Zentaro Tamenaga , Akira Yamamoto , Tatsurou Mori , Noriyasu Nagai , Akio Saito , Masashi Hayashi , Takeshi Murase , Yuki Sawai
摘要： In order to keep possible local temperature differences in a liquid ejection head small to allow stable liquid ejection performance to be achieved, temperatures in a plurality of heating areas in a liquid ejection head are discretely controlled using heating elements and temperature detection elements.
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公开(公告)号：US20190084301A1
公开(公告)日：2019-03-21
申请号：US16194793
申请日：2018-11-19
发明人： Shingo Okushima , Seiichiro Karita , Takatsuna Aoki , Noriyasu Nagai , Eisuke Nishitani , Yumi Komamiya
摘要： Provided is a liquid ejection head comprising: an ejection opening row along a first direction; a pressure chamber with print-element; a passage communicating with the pressure chamber; a supply opening row along the first direction with supply openings extending in a second direction to supply liquid to the passage; a collection opening row along the first direction with collection openings extending in the second direction to collect a liquid from the passage; a first common supply passage along the first direction to supply a liquid to the supply opening row; a first common collection passage along the first direction to collect a liquid from the collection opening row; a first supply side communication opening extending in the second direction to supply a liquid to the first common supply passage; and a first collection side communication opening extending in the second direction to collect a liquid from the first common collection passage, wherein at least one of the first supply side communication opening and the first collection side communication opening is provided at a plurality of positions.
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公开(公告)号：US10201980B2
公开(公告)日：2019-02-12
申请号：US15888974
申请日：2018-02-05
发明人： Takatsuna Aoki , Seiichiro Karita , Shingo Okushima , Eisuke Nishitani , Yumi Komamiya , Kazuhiro Yamada , Zentaro Tamenaga , Noriyasu Nagai , Tatsurou Mori , Shuzo Iwanaga , Akio Saito , Akira Yamamoto
摘要： A liquid discharge head includes discharge orifices, recording elements that generate energy, supply channels that supply liquid to the recording elements, a common supply channel communicating with the supply channels, recovery channels that recover liquid supplied to the recording elements, a common recovery channel that recovers liquid from the recovery channels, a first inlet port that supplies liquid to the common supply channel, a first recovery port that recovers liquid from the first common supply channel, a second inlet port that supplies liquid to the common recovery channel, and a second recovery port that recovers liquid from the second common recovery channel. The first inlet port and the first recovery port communicate without going through channel portions where recording elements are disposed, and the second inlet port and the second recovery port communicate without going through channel portions where recording elements are disposed.
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公开(公告)号：US20190023018A1
公开(公告)日：2019-01-24
申请号：US16140896
申请日：2018-09-25
发明人： Yoshiyuki Nakagawa , Kazuhiro Yamada , Noriyasu Nagai , Takuro Yamazaki , Toru Nakakubo , Akira Yamamoto , Masafumi Morisue , Ryo Kasai
CPC分类号： B41J2/175 , B41J2/1404 , B41J2/18 , B41J2202/12
摘要： The liquid ejection head 1 is provided with: an ejection orifice array 19 arraying multiple ejection orifices 12 in order to eject a liquid; multiple energy-generating elements 11 for generating energy in order to eject the liquid; a substrate 10 provided with the multiple energy-generating elements 11; a through port array 25 arraying multiple through ports 16 penetrating the substrate 10; multiple linear liquid flow paths 13 positioned between the through port array 25 and the ejection orifice array 19, and connected to respective ejection orifices 12 of the ejection orifice array 19 and respective through ports 16 of the through port array 25; and first and second electrode 21 and 22 arranged in each of the multiple liquid flow paths 13, and for generating an electroosmotic flow in the liquid.
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公开(公告)号：US20190023016A1
公开(公告)日：2019-01-24
申请号：US16141055
申请日：2018-09-25
发明人： Yoshiyuki Nakagawa , Kazuhiro Yamada , Noriyasu Nagai , Takuro Yamazaki , Toru Nakakubo , Akira Yamamoto , Masafumi Morisue , Ryo Kasai
IPC分类号： B41J2/14
摘要： A liquid ejection head 1 includes an ejection orifice 12 through which a liquid is ejected, a first liquid flow path 13 which is in communication with the ejection orifice 12 and through which the liquid flows, a second liquid flow path 14 which is in communication with the ejection orifice 12 on the opposite side of the first liquid flow 13 with respect to the ejection orifice 12 and through which the liquid flows, a first electrode 21 positioned in the first liquid flow path 13, and a second electrode 22 which is positioned in the second liquid flow path 14 and generates an electro-osmotic flow in the liquid together with the first electrode 21.
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公开(公告)号：US20190001691A1
公开(公告)日：2019-01-03
申请号：US16014624
申请日：2018-06-21
发明人： Genji Inada , Naozumi Nabeshima , Soji Kondo , Noriyasu Nagai , Takuya Iwano
CPC分类号： B41J2/17563 , B41J2/14 , B41J2/155 , B41J2/17596 , B41J2/185 , B41J2002/14403 , B41J2202/12 , B41J2202/20 , B41J2202/21
摘要： Element substrate 2 has ejection ports for ejecting liquid, pressure chambers 62 for storing the liquid to be ejected from the ejection ports, liquid supply paths for supplying liquid to the pressure chambers and liquid recovery paths 66 for recovering liquid from the pressure chambers. The filter chambers 23 have respective filters 11 for seizing foreign objects contained in liquid. Liquid is forced to flow from downward to upward relative to the filters 11.
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