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公开(公告)号：US20180361734A1
公开(公告)日：2018-12-20
申请号：US16006325
申请日：2018-06-12
发明人： Tomoko Kudo , Takaaki Yamaguchi , Keiji Tomizawa , Masaki Oikawa , Yoshihiro Hamada , Masataka Sakurai
CPC分类号： B41J2/0451 , B41J2/04555 , B41J2/0458 , B41J2/04581 , B41J2/14072 , B41J2/14201 , B41J2002/14491
摘要： A liquid ejection head includes a substrate including an electrically insulating film, an energy generating element provided on the substrate and configured to generate energy used to eject a liquid, a flow path formed through the substrate and communicating with an ejection port configured to eject a liquid, and a wiring layer formed in the electrically insulating film of the substrate, used to drive the energy generating element, provided apart from a wall defining the flow path, and provided to surround the flow path in a plan view of the substrate.
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12.发明授权Liquid ejection head, liquid ejection apparatus, and method of manufacturing liquid ejection head 有权液体喷射头，液体喷射装置和液体喷射头的制造方法公开(公告)号：US09233536B2
公开(公告)日：2016-01-12
申请号：US14606895
申请日：2015-01-27
发明人： Keiji Tomizawa , Takuma Kodoi , Takuya Iwano
CPC分类号： B41J2/14201 , B41J2/14024 , B41J2/14072 , B41J2/1603 , B41J2/1607 , B41J2/1623 , Y10T29/49117
摘要： A liquid ejection head including: a recording element substrate provided with an element; an electric wiring substrate having a bent portion, a connecting portion provided on one side of the bent portion and connected with the recording element substrate, and an input portion provided on the other side of the bent portion; and a housing having a first surface, a second surface, a depression provided on the second surface, and a member separated from a bottom surface of the depression and extending into an opening of the depression, wherein part of the other side of the electric wiring substrate is disposed between the bottom surface of the depression and the member.
摘要翻译： 一种液体喷射头，包括：设置有元件的记录元件基板; 具有弯曲部的电布线基板，设置在所述弯曲部的一侧并与所述记录元件基板连接的连接部以及设置在所述弯曲部的另一侧的输入部; 以及具有第一表面，第二表面，设置在第二表面上的凹陷的壳体，以及与凹陷的底面分离并延伸到凹陷的开口中的构件，其中电线的另一侧的一部分 衬底设置在凹陷的底表面和构件之间。
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公开(公告)号：US08877431B2
公开(公告)日：2014-11-04
申请号：US14146197
申请日：2014-01-02
发明人： Takuma Kodoi , Chiaki Muraoka , Keiji Tomizawa
CPC分类号： G03F7/0035 , B41J2/1603 , B41J2/1631 , B41J2/1635 , G03F7/038
摘要： A process for producing a liquid ejection head by providing, in one chip, a liquid ejection head having a portion for ejection in which an ejection orifice array is arranged and a side portion having no ejection orifice array, these portions being provided with a member of a photosensitive material, arranging the chip on a common substrate in such a chip array that these two portions are alternately arranged, and separating each chip from the substrate, the process including the steps of relatively moving a reticle of an aligner along the chip array for a photosensitive material on the substrate to expose each chip, and developing the material to obtain the member. A first reticle for forming the portion for ejection and a second reticle for forming only the side portion are used. The exposure includes a first and a second exposure treatment respectively by the first and second reticles.
摘要翻译： 一种液体喷射头的制造方法，其特征在于，在一个芯片中设置具有排出喷射孔排列的部分的液体喷射头和不具有喷射口阵列的侧部，这些部分设置有 感光材料，将芯片布置在这样的芯片阵列中的这些两个部分交替布置的公共基板上，并将每个芯片与基板分开，该方法包括以下步骤：沿着芯片阵列相对移动对准器的光罩， 在基板上的感光材料以暴露每个芯片，并显影材料以获得该元件。 使用用于形成用于喷射的部分的第一掩模版和仅形成侧部的第二掩模版。 曝光包括分别由第一和第二掩模版进行的第一和第二曝光处理。
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公开(公告)号：US20130286096A1
公开(公告)日：2013-10-31
申请号：US13867631
申请日：2013-04-22
发明人： Takuma Kodoi , Keiji Tomizawa , Chiaki Muraoka
IPC分类号： B41J2/14
CPC分类号： B41J2/14 , B41J2/1404 , B41J2/14129 , B41J2/1603 , B41J2/1628
摘要： A liquid discharge head includes: a substrate including an element that generates energy to discharge liquid and a liquid supply port; a flow path forming member on the substrate which forms a space therebetween with the substrate and has a discharge port therein, the space constituting a pressure chamber, and a flow path causing the pressure chamber and the liquid supply port to communicate; an interlayer provided between the substrate and the flow path forming member; and a protection layer including metal for protection, wherein the interlayer is disposed so as to avoid a first region corresponding to the element, a second region corresponding to a region of the flow path on a pressure chamber side, and a portion corresponding to a boundary between the first region and the second region, and wherein at least apart of the portion is covered with the protection layer.
摘要翻译： 液体排出头包括：基板，包括产生排出液体的能量的元件和液体供给口; 基板上的流路形成部件，其与基板形成在其间并具有排出口的空间，构成压力室的空间和使压力室和液体供给口连通的流路; 设置在所述基板和所述流路形成部件之间的中间层; 以及包括用于保护的金属的保护层，其中所述中间层被设置为避免对应于所述元件的第一区域，对应于压力室侧的流动路径的区域的第二区域和对应于边界的部分 在所述第一区域和所述第二区域之间，并且其中所述部分的至少一部分被所述保护层覆盖。
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公开(公告)号：US12023924B2
公开(公告)日：2024-07-02
申请号：US17899768
申请日：2022-08-31
发明人： Keiji Tomizawa , Yoshinori Misumi , Yuzuru Ishida , Shuzo Iwanaga
CPC分类号： B41J2/14088 , B41J2/04538 , B41J2/0458 , B41J2/14072
摘要： One embodiment of the present invention is a liquid ejection apparatus having: a liquid ejection head including a heating element, a first protection layer that blocks contact between the heating element and liquid, a second protection layer that partially covers the first protection layer and functions as a first electrode, a second electrode that is electrically connected to the first electrode through the liquid, and an ejection port that ejects the liquid; and a control unit configured to perform control of setting a potential difference between the first electrode and the second electrode to a predetermined value in each of aging and printing by changing at least one of potentials of the first electrode and the second electrode, wherein ΔVa≠ΔVp is satisfied in the case where the potential difference in the aging is represented by ΔVa and the potential difference in the printing is represented by ΔVp.
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公开(公告)号：US20210402765A1
公开(公告)日：2021-12-30
申请号：US17354489
申请日：2021-06-22
发明人： Keiji Tomizawa , Shuzo Iwanaga , Akiko Hammura , Yoshihiro Hamada
摘要： In a liquid ejection head in which ejection modules are arrayed on a flow path forming member, each ejection module includes a recording element substrate provided on a support member. The recording element substrate includes a liquid supply channel, a liquid collection channel, and ejection ports. The support member includes supply-side liquid communication ports communicating with the liquid supply channel and collection-side liquid communication ports communicating with the liquid collection channel. The supply-side liquid communication ports and the collection-side liquid communication ports are alternately provided along the direction in which the ejection modules are arrayed. The closest pair of liquid communication ports in the adjacent ends of two adjacent ejection modules are both supply-side or collection-side liquid communication ports.
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公开(公告)号：US20200070513A1
公开(公告)日：2020-03-05
申请号：US16556087
申请日：2019-08-29
发明人： Tomoki Ishiwata , Shuzo Iwanaga , Masaki Oikawa , Keiji Tomizawa , Tomohiro Sato , Akiko Hammura , Chiaki Muraoka , Shimpei Yoshikawa
IPC分类号： B41J2/14
摘要： A liquid injection head improving electric reliability includes: a substrate including: energy generating elements configured to apply energy for ejection to a liquid, and a substrate upper surface on which terminals respectively connected to electric wirings are provided, an ejection port forming member having: an ejection port forming surface in which the ejection ports for ejecting a liquid are formed, and a back surface on a side opposite to the ejection port forming surface, which is arranged so as to opposite to the substrate upper surface, and a sealant configured to cover connecting portions between the electric wirings and the terminals.
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公开(公告)号：US10308018B2
公开(公告)日：2019-06-04
申请号：US15724521
申请日：2017-10-04
发明人： Yosuke Miura , Keiji Tomizawa
摘要： A printing apparatus comprises: a plurality of printing elements; driving circuits that have at least one source follower transistor and correspond to each of the plurality of printing elements; and a control unit configured to, in a case where a number of printing elements driven simultaneously does not exceed a predetermined number, perform a first control for driving the at least one source follower transistor by a fixed pulse width irrespective of the number of printing elements driven simultaneously, and, in a case where the number of printing elements driven simultaneously exceed the predetermined number, perform a second control for changing a pulse width to drive the at least one source follower transistor based on the number of printing elements driven simultaneously.
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公开(公告)号：US10300698B2
公开(公告)日：2019-05-28
申请号：US15992651
申请日：2018-05-30
发明人： Keiji Tomizawa , Masataka Sakurai , Akiko Hammura
IPC分类号： B41J2/14
摘要： A liquid ejection head includes a substrate, a heat generating resistor element arranged on the substrate and a flow channel forming member for forming a flow channel. The flow channel forming member has a side wall surrounding at least part of the heat generating resistor element. The heat generating resistor element has a pair of oppositely disposed sides and a pair of electrical connection regions which extend along the respective ones of the pair of sides and are separated from the respective ones of the pair of sides by a distance. The side wall has at least one concave corner which is comprised of a curved surface or a surface extending obliquely to the pair of sides and the heat generating resistor element has at least one convex corner which faces the at least one concave corner of the side wall and is rounded or chamfered.
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公开(公告)号：US20180111370A1
公开(公告)日：2018-04-26
申请号：US15724521
申请日：2017-10-04
发明人： Yosuke Miura , Keiji Tomizawa
IPC分类号： B41J2/045
CPC分类号： B41J2/04591 , B41J2/04541 , B41J2/0455 , B41J2/04563 , B41J2/04568 , B41J2/0458 , B41J2/04586 , B41J2/04598
摘要： A printing apparatus comprises: a plurality of printing elements; driving circuits that have at least one source follower transistor and correspond to each of the plurality of printing elements; and a control unit configured to, in a case where a number of printing elements driven simultaneously does not exceed a predetermined number, perform a first control for driving the at least one source follower transistor by a fixed pulse width irrespective of the number of printing elements driven simultaneously, and, in a case where the number of printing elements driven simultaneously exceed the predetermined number, perform a second control for changing a pulse width to drive the at least one source follower transistor based on the number of printing elements driven simultaneously.
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