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公开(公告)号：US11712891B2
公开(公告)日：2023-08-01
申请号：US17347912
申请日：2021-06-15
IPC分类号： B41J2/14
CPC分类号： B41J2/14145 , B41J2/1404 , B41J2/1433 , B41J2202/12 , B41J2202/20
摘要： A liquid ejection head that can suppress variation in the circulation flow rate or the pressure of the liquid among a plurality of pressure chambers and suppress a difference in temperature distribution between adjacent element substrates to suppress image unevenness includes a plurality of ejection modules including an element substrate in which a plurality of ejection orifices that eject a liquid are aligned in an array. In one ejection module of the ejection modules adjacent to each other, the liquid is supplied from one side of an ejection orifice array, and the liquid is collected from the other side of the ejection orifice array, and in the other ejection module of the ejection modules adjacent to each other, the liquid is supplied from the other side, and the liquid is collected from the one side.
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公开(公告)号：US11597203B2
公开(公告)日：2023-03-07
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：US20210402770A1
公开(公告)日：2021-12-30
申请号：US17347912
申请日：2021-06-15
IPC分类号： B41J2/14
摘要： Provided is a liquid ejection head that can suppress variation in the circulation flow rate or the pressure of the liquid among a plurality of pressure chambers and suppress a difference in temperature distribution between adjacent element substrates to suppress image unevenness. The liquid ejection head includes a plurality of ejection modules including an element substrate in which a plurality of ejection orifices that eject a liquid are aligned in an array. In one ejection module of the ejection modules adjacent to each other, the liquid is supplied from one side of an ejection orifice array, and the liquid is collected from the other side of the ejection orifice array, and in the other ejection module of the ejection modules adjacent to each other, the liquid is supplied from the other side, and the liquid is collected from the one side.
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公开(公告)号：US11077658B2
公开(公告)日：2021-08-03
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：US09969163B2
公开(公告)日：2018-05-15
申请号：US15347652
申请日：2016-11-09
发明人： Chiaki Muraoka , Keiji Tomizawa , Takuma Kodoi
IPC分类号： B41J2/14
CPC分类号： B41J2/1433 , B41J2/04541 , B41J2/0458 , B41J2/14024 , B41J2/14072 , B41J2002/14491
摘要： A liquid discharge head includes a discharge unit that discharges a liquid as a result of electric energy being supplied to the discharge unit, a first wiring member that is joined to the discharge unit and that includes a plurality of first joining terminals each capable of transmitting the electric energy to the discharge unit, and a second wiring member that is electrically joined to the first wiring member and that includes a plurality of second joining terminals. At least three of the plurality of first joining terminals are inspection terminals that are short-circuited, and the second joining terminals are connected to contact terminals to each of which an external signal can be input.
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公开(公告)号：US09889650B2
公开(公告)日：2018-02-13
申请号：US15155590
申请日：2016-05-16
发明人： Takuma Kodoi , Keiji Tomizawa
CPC分类号： B41J2/14112 , B41J2/1404 , B41J2/145
摘要： There are provided a liquid ejecting head, an ejecting element substrate and a liquid ejecting apparatus that can suppress degradation in print quality. Therefore in an ejecting element substrate arranged the closest to the center of a support member, a flow resistance of a flow passage corresponding to an ejection opening of an ejection opening array arranged the closest to the center of the ejecting element substrate is made high.
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公开(公告)号：US09676181B2
公开(公告)日：2017-06-13
申请号：US15222272
申请日：2016-07-28
发明人： Keiji Tomizawa , Takuma Kodoi , Chiaki Muraoka
CPC分类号： B41J2/04541 , B41J2/04508 , B41J2/0458 , B41J2/0459 , B41J2/05
摘要： A method for stabilizing a refilling speed within a predetermined range even with various physical properties of liquid to be ejected is provided for a liquid ejection head using a thermal system. To achieve this, a drive pulse is controlled for each nozzle array according to the combination of a predetermined material and structure of a bubble-generating chamber and the physical property of the liquid to be ejected such that an amount of an overshoot and the refilling speed are within a predetermined range.
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公开(公告)号：US09283755B2
公开(公告)日：2016-03-15
申请号：US14439376
申请日：2013-10-10
发明人： Chiaki Muraoka , Yukuo Yamaguchi , Takuya Iwano , Keiji Tomizawa
CPC分类号： B41J2/14016 , B41J2/1404 , B41J2/1433 , B41J2002/14185 , B41J2002/14475
摘要： A liquid ejection head includes a discharge orifice configured to eject liquid; a device configured to generate energy for use in ejecting liquid; a pressure chamber partitioned by a wall, the pressure chamber accommodating the device and communicating with the discharge orifice; and a channel configured to supply liquid to the pressure chamber, wherein the discharge orifice has first and second protrusions protruding from the edge of the discharge orifice toward the central portion in an extending direction of the channel along the center line of the channel, and the interval between the base of the first protrusion and the base of the second protrusion in the extending direction of the channel is larger than the maximum interval between the edges of the discharge orifice in a direction perpendicular to the extending direction.
摘要翻译： 液体喷射头包括配置成喷射液体的排出口; 被配置为产生用于喷射液体的能量的装置; 由壁分隔的压力室，所述压力室容纳所述装置并与所述排放孔连通; 以及构造成向压力室供给液体的通道，其中，排出孔具有沿着通道的中心线沿通道的延伸方向从排出口的边缘向中心部分突出的第一和第二突起，并且 在通道的延伸方向上，第一突起的基部与第二突起的基部之间的间隔大于排出孔的与延伸方向垂直的方向的边缘之间的最大间隔。
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公开(公告)号：US20140198157A1
公开(公告)日：2014-07-17
申请号：US14146203
申请日：2014-01-02
发明人： Keiji Tomizawa , Chiaki Muraoka , Takuma Kodoi
CPC分类号： B41J2/1631 , B41J2/145 , B41J2/15 , B41J2/1601 , B41J2/1635 , B41J2/1639 , B41J2/1645
摘要： A process for producing a chip in which plural ejection orifice arrays are arranged including conducting reduction projection exposure plural times to a wafer having a substrate and a photosensitive resin layer formed thereon while relatively moving positions of the wafer and a reticle to form ejection orifice array patterns in the resin layer, developing the patterns to form ejection orifice arrays in the resin layer, and dividing the wafer to form plural chips in which the plural ejection orifice arrays are arranged. The exposure is conducted once to form in the resin layer a first ejection orifice array pattern corresponding to partial ejection orifice arrays in an arranging direction thereof in one chip, a second ejection orifice array pattern corresponding to all ejection orifice arrays in one chip and a third ejection orifice array pattern corresponding to partial ejection orifice arrays in an arranging direction thereof in one chip.
摘要翻译： 一种制造芯片的方法，其中多个喷射孔阵列被布置成包括导电还原投影多次曝光到具有基板和形成在其上的感光树脂层的晶片上，同时晶片和掩模版的相对移动位置形成喷射孔阵列图案 在树脂层中，形成图案以在树脂层中形成喷射孔阵列，并且分割晶片以形成其中布置有多个喷射孔阵列的多个芯片。 曝光一次，在树脂层中形成与在一个芯片中的排列方向相对应的部分喷射孔阵列的第一喷射孔阵列图案，对应于一个芯片中的所有喷射孔阵列的第二喷射孔阵列图案， 喷射孔阵列图案在一个芯片中在其排列方向上对应于部分喷射孔阵列。
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公开(公告)号：US20130307889A1
公开(公告)日：2013-11-21
申请号：US13893561
申请日：2013-05-14
发明人： Toshikazu Nagatsuka , Shuichi Murakami , Keiji Tomizawa , Atsushi Omura , Etsuko Sawada , Hiroaki Mihara , Yohei Hamade
IPC分类号： B41J2/045
CPC分类号： B41J2/04541 , B41J2/0458 , B41J2/16526 , B41J2002/16573
摘要： There is provided an inkjet printing apparatus which can perform stable ejection also in successive printing at high speed even in a case of performing printing in use of a print head provided with an ejection opening surface having hydrophilic properties. The inkjet printing apparatus comprises an inkjet print head wherein the control unit controls the print head such that, in a case where the ejection number of the ink ejected from the print head after removing the ink on the ejection opening surface by the ink removal unit is equal to or more than a threshold, a drive energy amount that is supplied for the preliminary ejection operation is larger than a drive energy amount that is supplied for the preliminary ejection operation in a case where the ejection number is less than the threshold.
摘要翻译： 提供了一种喷墨打印设备，即使在使用具有亲水性的喷射开口表面的打印头进行打印的情况下，也能够以高速连续打印执行稳定的喷射。 喷墨打印装置包括喷墨打印头，其中控制单元控制打印头，使得在通过除墨单元去除喷射口表面上的墨后从打印头喷射的墨的喷射次数为 等于或大于阈值时，对于预喷射操作而提供的驱动能量大于在喷射数小于阈值的情况下为预喷射操作提供的驱动能量。
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