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    • 62. 发明授权
    • Piezoelectric inkjet head and method of manufacturing the same
    • 压电喷墨头及其制造方法
    • US07891064B2
    • 2011-02-22
    • US11768293
    • 2007-06-26
    • Sung-gyu KangYoung-ki HongJae-woo ChungSe-young Oh
    • Sung-gyu KangYoung-ki HongJae-woo ChungSe-young Oh
    • H01L41/22B41J2/045
    • B41J2/14233B41J2/055B41J2/161B41J2/1628B41J2/1629B41J2/1631B41J2/1632B41J2/1642B41J2002/14403B41J2002/14419B41J2202/03B41J2202/11Y10T29/42
    • A piezoelectric inkjet head and a method of manufacturing the piezoelectric inkjet head. The piezoelectric inkjet head includes three single crystal silicon substrates bonded to each other. An upper substrate includes an ink inlet, a plurality of pressure chambers, and a plurality of piezoelectric actuators, a middle substrate includes a manifold, a plurality of restrictors, and a plurality of first dampers, and a lower substrate includes a plurality of nozzles. The middle substrate also includes a membrane that is formed under the manifold to mitigate a rapid pressure change in the manifold and if formed of a material different from the material used for forming the middle substrate. A cavity located under the membrane and at least one venting channel that connects the cavity to the outside are formed in the middle substrate or the lower substrate. Due to the above configuration, the membrane having flexibility mitigates a rapid pressure change in the manifold caused by backflow of ink, and thus, cross-talk between adjacent pressure chambers during ink ejection can be effectively prevented.
    • 压电喷墨头和压电喷墨头的制造方法。 压电喷墨头包括彼此结合的三个单晶硅衬底。 上基板包括墨入口,多个压力室和多个压电致动器,中间基板包括歧管,多个限流器和多个第一阻尼器,下基板包括多个喷嘴。 中间基板还包括形成在歧管下方的膜,以减轻歧管中的快速压力变化,并且如果由不同于用于形成中间基板的材料形成的材料形成。 在中间基板或下基板中形成位于膜下方的空腔和将空腔连接到外部的至少一个通气通道。 由于上述结构,具有柔性的膜减轻了由于油墨的回流引起的歧管中的快速压力变化,因此可以有效地防止在喷墨期间相邻压力室之间的串扰。
    • 64. 发明授权
    • Restrictors with structure to prevent back flow and inkjet head having the same
    • 具有防止回流的结构的限流器和具有相同的喷墨头
    • US07802874B2
    • 2010-09-28
    • US11756061
    • 2007-05-31
    • Sang-kwon WeeSe-young OhJae-woo ChungMi-jeong Song
    • Sang-kwon WeeSe-young OhJae-woo ChungMi-jeong Song
    • B41J2/45
    • B41J2/055B41J2/14233B41J2002/14306B41J2202/11
    • A restrictor with a structure to prevent a back flow of ink and an inkjet head including the restrictor. In the inkjet head, an ink channel is formed in a channel plate, and the ink channel includes an ink inlet, a plurality of pressure chambers, a manifold, a plurality of restrictors respectively connecting the pressure chambers to the manifold, and a plurality of nozzles. Piezoelectric actuators are formed on the channel plate. Each of the restrictors includes a plurality of protrusions formed on an inner surface thereof in a structure suitable to increase a flow resistance of the restrictor when ink flows from the pressure chamber to the manifold through the restrictor. Each of the protrusions includes a first surface facing a flow of ink moving through the restrictor in a direction from the manifold to the pressure chamber, and a second surface facing a flow of ink moving through the restrictor in a direction from the pressure chamber to the manifold. The first surface has a low flow resistance, and the second surface has a high flow resistance. Therefore, a black flow of ink is restricted when ink is ejected, and sufficient ink can be supplied through the restrictor during an ink refill process.
    • 具有防止墨回流的结构的限流器和包括限流器的喷墨头。 在喷墨头中,在通道板中形成墨水通道,墨水通道包括墨水入口,多个压力室,歧管,分别将压力室连接到歧管的多个限流器,以及多个 喷嘴。 压电致动器形成在通道板上。 每个限流器包括形成在其内表面上的多个突起,其结构适于当油墨通过限制器从压力室流到歧管时增加限流器的流动阻力。 每个突起包括面向墨水流的第一表面,所述第一表面沿着从歧管到压力室的方向移动通过限流器;以及第二表面,所述第二表面面向墨水流动,所述第二表面沿着从所述压力室到所述压力室的方向移动通过所述限制器 多数。 第一表面具有低流动阻力,第二表面具有高流动阻力。 因此,当墨水喷射时,墨水的黑色流动受到限制,并且在填墨过程中可以通过限流器供应足够的墨水。
    • 65. 发明申请
    • PIEZOELECTRIC INKJET PRINTHEAD
    • 压电式喷嘴
    • US20100171797A1
    • 2010-07-08
    • US12722664
    • 2010-03-12
    • Seung-mo LIMTae-Kyung LeeChang-Youl MoonJae-woo ChungHwa-sun Lee
    • Seung-mo LIMTae-Kyung LeeChang-Youl MoonJae-woo ChungHwa-sun Lee
    • B41J2/045
    • B41J2/14233B41J2/055
    • A piezoelectric inkjet printhead includes a manifold, a chamber array including a plurality of chambers in connection with the manifold and arranged along at least one side of the manifold, a vibrating plate to cover the plurality of chambers, and a plurality of piezoelectric actuators formed on the vibrating plate to change pressures of corresponding ones of the plurality of chambers by vibrating the vibrating plate. The plurality of chambers includes a plurality of pressure chambers disposed in a center portion of the chamber array and having corresponding ink ejecting nozzles, and at least two dummy chambers, one disposed on each side of the chamber array and having corresponding dummy nozzles that do not eject ink. A plurality of trenches may be formed in the vibrating plate between each of the piezoelectric actuators.
    • 压电喷墨打印头包括歧管,腔室阵列,其包括与歧管连接的多个腔室,并且沿着歧管的至少一侧布置,覆盖多个腔室的振动板,以及形成在 所述振动板通过振动所述振动板来改变所述多个室中相应的室的压力。 多个室包括设置在室阵列的中心部分并具有对应的喷墨喷嘴的多个压力室,以及至少两个虚设室,一个设置在室阵列的每一侧上,并且具有不对应的虚拟喷嘴 弹出墨水。 可以在每个压电致动器之间的振动板中形成多个沟槽。
    • 67. 发明申请
    • RESTRICTORS WITH STRUCTURE TO PREVENT BACK FLOW AND INKJET HEAD HAVING THE SAME
    • 具有结构防止背部流动的限制器和具有其的注射头
    • US20080129798A1
    • 2008-06-05
    • US11756061
    • 2007-05-31
    • Sang-kwon WeeSe-young OhJae-woo ChungMi-jeong Song
    • Sang-kwon WeeSe-young OhJae-woo ChungMi-jeong Song
    • B41J2/045B41J2/175
    • B41J2/055B41J2/14233B41J2002/14306B41J2202/11
    • A restrictor with a structure to prevent a back flow of ink and an inkjet head including the restrictor. In the inkjet head, an ink channel is formed in a channel plate, and the ink channel includes an ink inlet, a plurality of pressure chambers, a manifold, a plurality of restrictors respectively connecting the pressure chambers to the manifold, and a plurality of nozzles. Piezoelectric actuators are formed on the channel plate. Each of the restrictors includes a plurality of protrusions formed on an inner surface thereof in a structure suitable to increase a flow resistance of the restrictor when ink flows from the pressure chamber to the manifold through the restrictor. Each of the protrusions includes a first surface facing a flow of ink moving through the restrictor in a direction from the manifold to the pressure chamber, and a second surface facing a flow of ink moving through the restrictor in a direction from the pressure chamber to the manifold. The first surface has a low flow resistance, and the second surface has a high flow resistance. Therefore, a black flow of ink is restricted when ink is ejected, and sufficient ink can be supplied through the restrictor during an ink refill process.
    • 具有防止墨回流的结构的限流器和包括限流器的喷墨头。 在喷墨头中,在通道板中形成墨水通道,墨水通道包括墨水入口,多个压力室,歧管,分别将压力室连接到歧管的多个限流器,以及多个 喷嘴。 压电致动器形成在通道板上。 每个限流器包括形成在其内表面上的多个突起,其结构适于当油墨通过限制器从压力室流到歧管时增加限流器的流动阻力。 每个突起包括面向墨水流的第一表面,所述第一表面沿着从歧管到压力室的方向移动通过限流器;以及第二表面,所述第二表面面向墨水流动,所述第二表面沿着从所述压力室到所述压力室的方向移动通过所述限制器 多数。 第一表面具有低流动阻力,第二表面具有高流动阻力。 因此,当墨水喷射时,墨水的黑色流动受到限制,并且在填墨过程中可以通过限流器供应足够的墨水。
    • 68. 发明申请
    • PIEZOELECTRIC INKJET PRINTHEAD
    • 压电式喷嘴
    • US20080007598A1
    • 2008-01-10
    • US11755996
    • 2007-05-31
    • Young-ki HongJae-woo Chung
    • Young-ki HongJae-woo Chung
    • B41J2/175B41J2/045
    • B41J2/14233B41J2002/14403B41J2002/14419B41J2202/11
    • A piezoelectric inkjet printhead that includes a flow channel plate; an ink flow channel that is formed in the flow channel plate and includes an ink inlet through which ink enters, a plurality of pressure chambers to which ink to be ejected is filled, a manifold which is a path for supplying ink from the ink inlet to the pressure chambers, a plurality of restrictors that connect the manifold to the pressure chambers, and a plurality of nozzles to eject ink from the pressure chambers to the outside; and a plurality of piezoelectric actuators formed on the flow channel plate to provide a driving power to each of the pressure chambers to eject ink to the outside, wherein the manifold includes a plurality of individual manifolds defined by a plurality of first barrier ribs, which respectively correspond to the pressure chambers. In the process of ejecting ink to the outside, ink that flows back from the pressure chambers towards the individual manifolds through the restrictors does not influence adjacent pressure chambers, thus preventing cross-talk.
    • 一种压电喷墨打印头,包括流动通道板; 形成在流路板中的油墨流路,具有墨入口的墨入口,被填充有墨的墨的多个压力室,作为从墨入口供墨的路径的歧管 所述压力室,将所述歧管连接到所述压力室的多个限制器,以及用于将油墨从所述压力室喷射到外部的多个喷嘴; 以及形成在所述流动通道板上的多个压电致动器,以向每个所述压力室提供驱动力以将油墨喷射到外部,其中所述歧管包括由多个第一阻挡肋限定的多个单独歧管, 对应于压力室。 在将油墨喷射到外部的过程中,从压力室朝向各歧管经过限流器回流的油墨不影响相邻的压力室,从而防止串扰。