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    • 1. 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。
    • 2. 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。
    • 10. 发明授权
    • Inkjet printhead having a cantilever actuator
    • 喷墨打印头具有悬臂致动器
    • US07494208B2
    • 2009-02-24
    • US11260260
    • 2005-10-28
    • Kye-si KwonGee-young SungSeong-jin KimSeung-jo ShinMi-jeong Song
    • Kye-si KwonGee-young SungSeong-jin KimSeung-jo ShinMi-jeong Song
    • B41J2/05B41J2/045
    • B41J2/14282B41J2002/14193
    • An inkjet printhead having a cantilever actuator, the inkjet printhead including a plurality of ink chambers containing ink to be ejected; a manifold containing ink to be supplied to the plurality of ink chambers; a plurality of restrictors supplying ink to the plurality of ink chambers from the manifold; a plurality of nozzles ejecting ink from the plurality of ink chambers; and a plurality of cantilever actuators each installed in each of the plurality of ink chambers and having one fixed end and the other deflectable end, such that pressure for ejection of ink is applied due to the deflection of the other end of the cantilever actuator to the ink inside the ink chamber. The cantilever actuator may be made of a bimorph element, eject ink through the nozzle from the ink chamber, and also prevent backflow of ink from the ink chamber to the restrictor by virtue of the deflection of the other end thereof. Since the cantilever actuator can have a greater displacement and can prevent backflow of ink, the size of the ink chamber needed to eject ink droplets of uniform volume can be reduced, and thus the number of channels per inch (CPI) of the inkjet printhead can be increased.
    • 一种具有悬臂致动器的喷墨打印头,所述喷墨打印头包括多个墨室,所述多个墨室容纳要喷射的墨; 含有供给多个墨水室的墨水的歧管; 多个限制器,从多个歧管向多个墨水室供墨; 多个喷嘴从所述多个墨室喷射墨; 以及多个悬臂致动器,每个安装在所述多个墨室中的每一个中并且具有一个固定端和另一个可偏转端,使得由于所述悬臂致动器的另一端的偏转而施加用于喷射墨的压力 油墨室内的墨水。 悬臂致动器可以由双压电晶片元件制成,通过喷嘴从墨室喷射墨水,并且还防止墨水由于其另一端的偏转而从墨水室回流到限制器。 由于悬臂致动器可以具有更大的位移并且可以防止墨的回流,所以可以减少喷射具有均匀体积的墨滴所需的墨室的尺寸,因此喷墨打印头的每英寸通道数(CPI)可以 增加。