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公开(公告)号：US20220016886A1
公开(公告)日：2022-01-20
申请号：US17367793
申请日：2021-07-06
发明人： Yuzuru Ishida , Yoshinori Misumi , Maki Kato , Takeru Yasuda , Tsubasa Funabashi
摘要： A liquid ejection head includes a liquid ejection head substrate having ejection elements that generate liquid ejecting energy, an ejection port formation member having ejection ports, and liquid chambers between the liquid ejection head substrate and the ejection port formation member to house liquid to be ejected through the ejection ports. The liquid ejection head substrate includes a substrate, an insulating film stacked on the substrate to insulate the ejection elements, communication ports in the substrate and the insulating film to communicate with the liquid chambers, and a liquid-resistant insulating film adherent to the ejection port formation member. The liquid-resistant insulating film covers the insulating film at its ejection port formation member side and includes a first portion partially contacting the ejection port formation member and a second portion covering the inner surfaces of the communication ports in the insulating film, the first and second portions being continuous.
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公开(公告)号：US11173713B2
公开(公告)日：2021-11-16
申请号：US16828733
申请日：2020-03-24
发明人： Tomohiro Sato , Koichi Ishida , Masaki Oikawa , Yoshinori Misumi , Maki Kato , Yuzuru Ishida , Tsubasa Funabashi
摘要： A liquid discharge head includes a flow passage forming member, an element substrate including a liquid discharge element and a surface on which a conductive member made from a metallic material is disposed, and an intermediate layer made from a resin material and configured to join the flow passage forming member and the surface of the element substrate to each other. The intermediate layer is disposed in a state, separated from the conductive member, where the conductive member is exposed from the intermediate layer. The conductive member is covered with the flow passage forming member.
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公开(公告)号：US10994532B2
公开(公告)日：2021-05-04
申请号：US16570361
申请日：2019-09-13
发明人： Yuzuru Ishida , Maki Kato , Yoshinori Misumi , Nobuyuki Hirayama
摘要： A liquid discharge apparatus includes a plurality of anti-cavitation layers formed to cover heat generating elements at positions where the anti-cavitation layers contact the liquid, a monitoring unit that detects a current flowing through the anti-cavitation layers, and a plurality of switching units that switch whether to apply, to the heat generating elements, a voltage for driving the heat generating elements. If the monitoring unit detects that a current greater than a predetermined value has flowed through one of the anti-cavitation layers while the voltage is applied to the heat generating elements, a control unit sequentially switches the plurality of switching units, and specifies the heat generating element corresponding to the anti-cavitation layer through which the current has flowed, among the heat generating elements.
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公开(公告)号：US20210016563A1
公开(公告)日：2021-01-21
申请号：US16924031
申请日：2020-07-08
摘要： A method of cleaning a liquid discharge head includes first eluting a first electrode and second eluting a second electrode. In the cleaning method, the first eluting and the second eluting are executed such that a ratio between a first electric power amount used in the first eluting and a second electric power amount used in the second eluting is a ratio based on a ratio between an area of a first face of the first electrode and an area of a second face of the second electrode.
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公开(公告)号：US10538085B2
公开(公告)日：2020-01-21
申请号：US16132797
申请日：2018-09-17
发明人： Yoshinori Misumi , Yuzuru Ishida , Maki Kato , Takahiro Matsui
摘要： Influence of transform of quality to an entire liquid discharge head is suppressed when a heat resistor and a covering portion are electrically connected to each other. To address this problem, a liquid discharge head substrate includes fuse portions for respective heat resistor arrays.
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6.发明申请公开(公告)号：US20190329549A1
公开(公告)日：2019-10-31
申请号：US16383449
申请日：2019-04-12
摘要： A liquid ejection head substrate including a base including a surface having a first and second heat generation elements, a conductive first covering portion, a conductive second covering portion, an insulating layer disposed between the first heat generation element and the first covering portion, and between the second heat generation element and the second covering portion, a fuse portion, first wiring electrically connected to the first covering portion through the fuse portion, the first wiring electrically connecting the first covering portion to the second covering portion, a terminal electrically connected to the first covering portion and the second covering portion through the first wiring, second wiring, and electric connection portions provided between the fuse portion and the terminal in a current path passing through the first wiring, the electric connection portions parallelly connecting the first and second wiring to each other.
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公开(公告)号：US20190255848A1
公开(公告)日：2019-08-22
申请号：US16271176
申请日：2019-02-08
IPC分类号： B41J2/14
摘要： The liquid discharge head substrate includes a first covering portion that covers the first heat generation element and that has conductivity, a second covering portion that covers the second heat generation element and that has conductivity, an insulative layer disposed between the first heat generation element and the first covering portion and between the second heat generation element and the second covering portion, a fuse portion provided on the substrate on a side on which the first covering portion is provided, common wiring for electrically coupling the first covering portion and the second covering portion, the common wiring coupled with the first covering portion via the fuse portion, and a cover layer including at least silicon and carbon and covering the fuse portion.
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公开(公告)号：US09868283B2
公开(公告)日：2018-01-16
申请号：US15253432
申请日：2016-08-31
发明人： Yoshinori Misumi , Maki Kato , Yuzuru Ishida , Akio Goto , Norihiro Yoshinari , Takahiro Matsui , Ichiro Saito
CPC分类号： B41J2/14072 , B41J2/16505 , B41J2/16517 , B41J2/16526 , B41J2/1707 , B41J2/1714
摘要： A method of cleaning a liquid discharge head, which includes a heat generating resistor that generates thermal energy for discharging a liquid and a covering portion covering the heat generating resistor, includes alternately performing a first voltage application process and a second voltage application process multiple times, and reducing energy applied in the second voltage application process. The first voltage application process includes applying voltage between the covering portion and an electrode through the liquid to dissolve the covering portion in the liquid. The second voltage application process includes reversing relative polarities of the covering portion and the electrode in the first voltage application process and applying voltage between the covering portion and the electrode. Energy applied in the second voltage application process is reduced such that the energy applied is less than energy applied in the first voltage application process of an immediately preceding time.
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公开(公告)号：US20140368581A1
公开(公告)日：2014-12-18
申请号：US14306089
申请日：2014-06-16
发明人： Kenji Takahashi , Ichiro Saito , Maki Kato , Yuzuru Ishida , Norihiro Yoshinari , Yoshinori Misumi , Takahiro Matsui , Toshiyasu Sakai
IPC分类号： B41J2/14
CPC分类号： B41J2/14129 , B41J2202/03
摘要： A liquid ejection head substrate includes a substrate, an element disposed on the substrate that generates thermal energy used for ejecting liquid, and a protective layer disposed at least at a position corresponding to the element. The protective layer contains iridium and has a density in the range of 21.0 g/cm3 to 22.7 g/cm3.
摘要翻译： 液体喷射头基板包括基板，设置在基板上的产生用于喷射液体的热能的元件，以及至少设置在与元件对应的位置的保护层。 保护层含有铱，密度在21.0g / cm 3至22.7g / cm 3的范围内。
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10.发明授权公开(公告)号：US08721050B2
公开(公告)日：2014-05-13
申请号：US13693845
申请日：2012-12-04
发明人： Yuzuru Ishida , Maki Kato , Kenji Takahashi , Ichiro Saito
IPC分类号： B41J2/05
CPC分类号： B41J2/14427 , B41J2/14129
摘要： A liquid discharge head, contains: an energy generating element which generates thermal energy and contains a heat generation resistant layer and a pair of electrode layers whose end surfaces are separated from each other; an insulating layer covering the pair of electrode layers and the heat generation resistant layer and containing an insulating material; a protective layer provided above the insulating layer at least at a position corresponding to the energy generating element and containing a metal material containing iridium or ruthenium; and a covering layer provided at a position covering at least portions of the protective layer corresponding to the end surfaces of the pair of electrode layers in such a manner that a part of the protective layer is exposed and containing a metal material containing tantalum or niobium.
摘要翻译： 一种液体排出头，包括：能量产生元件，其产生热能并且包含耐热发生层和一对端面彼此分离的电极层; 覆盖所述一对电极层和所述发热电阻层并且包含绝缘材料的绝缘层; 至少在与所述能量产生元件对应的位置上设置在所述绝缘层之上并且含有含有铱或钌的金属材料的保护层; 以及覆盖层，其设置在覆盖所述保护层的至少一部分的位置，所述至少一部分对应于所述一对电极层的端面，使得所述保护层的一部分被暴露并且包含含有钽或铌的金属材料。
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