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    • 2. 发明公开
    • Liquid ejection head and driving method thereof
    • Flüssigkeitsausstoßkopfund Antriebsverfahrendafür
    • EP1900528A1
    • 2008-03-19
    • EP07017992.4
    • 2007-09-13
    • Brother Kogyo Kabushiki KaishaKyocera Corporation
    • Hibi, ManabuIwao, NaotoIshikura, Shin
    • B41J2/045B41J2/14
    • B41J2/14209B41J2/04581B41J2/04588B41J2002/14217B41J2002/14225B41J2002/14306B41J2002/14459B41J2202/20
    • A liquid ejection head includes a passage unit (4) and an actuator (21). A nozzle (8) for ejecting liquid and a common liquid chamber are formed in the passage unit. An individual liquid passage (32) formed in the passage unit includes a first passage, a pressure chamber (10), a second passage, and a restricted passage (12). The first passage communicates between the nozzle and the pressure chamber. The second passage communicates between the pressure chamber and the restricted passage. The restricted passage is smaller than the second passage in the sectional area perpendicular to the flow of the liquid. The actuator can selectively take a first state in which the volume of the pressure chamber is V1 and a second state in which the volume of the pressure chamber is V2 larger than V1. The actuator changes from the first state into the second state and then returns to the first state to eject the liquid from the nozzle. The individual liquid passage is designed so that Tc1 and Tc2 defined by predetermined expressions showing characteristics of the individual liquid passage satisfy a condition that Tc1/Tc2 is substantially not less than 4.7 and not more than 5.5.
    • 液体喷射头包括通道单元(4)和致动器(21)。 在通道单元中形成用于喷射液体的喷嘴(8)和公共液体室。 形成在通道单元中的单个液体通道(32)包括第一通道,压力室(10),第二通道和限制通道(12)。 第一通道在喷嘴和压力室之间连通。 第二通道在压力室和限制通道之间连通。 限制通道比垂直于液体流动截面的第二通道小。 致动器可以选择性地采取其中压力室的体积为V1的第一状态和压力室的体积V2大于V1的第二状态。 致动器从第一状态变为第二状态,然后返回到第一状态以从喷嘴喷出液体。 单独的液体通道被设计成使得通过显示各个液体通道的特性的预定表达式限定的Tc1和Tc2满足Tc1 / Tc2基本上不小于4.7且不大于5.5的条件。
    • 7. 发明公开
    • Ink-jet head
    • 喷墨头
    • EP1336487A3
    • 2004-03-17
    • EP03003403.7
    • 2003-02-14
    • BROTHER KOGYO KABUSHIKI KAISHA
    • Hirota, AtsushiIwao, NaotoSakaida, Atsuo
    • B41J2/14B41J2/055B41J2/175
    • B41J2/17563B41J2/055B41J2/14233B41J2002/14306B41J2002/14362B41J2002/14403B41J2202/03B41J2202/11
    • An ink-jet head of the invention includes a plurality of nozzles that eject ink, a first flat plate layer including at least one flat plate formed with an array of pressure chambers each communicating with a corresponding one of the nozzles, a second flat plate layer including at least one flat plate formed with a common ink chamber having a shape elongated in a direction of the array of the pressure chambers, an ink flow passage that communicates at its one end with a corresponding one of the pressure chambers and at its other end with the common ink chamber, an ink supply passage connecting the common ink chamber and an ink supply source, a flat plate member in a shape of a thin film disposed between the first flat plate layer and the second flat plate layer, a filter formed at the flat plate member for filtering the ink, and a damper chamber formed by a flat plate fixed on the flat plate member on a side thereof opposed to the common ink chamber.
    • 本发明的喷墨头包括多个喷射墨的喷嘴,包括至少一个平板的第一平板层,第一平板层形成有各自与相应的一个喷嘴连通的压力室阵列,第二平板层 包括至少一个平板,该平板形成有具有在压力室阵列的方向上延伸的形状的公共墨水腔室;墨水流动通道,其在一端与相应的一个压力腔室连通并且在其另一端部处 与所述公共墨水室连通的所述公共墨水室和墨水供应源的墨水供应通道,设置在所述第一平板层和所述第二平板层之间的薄膜形状的平板构件,形成在所述第一平板层和所述第二平板层之间的过滤器, 用于过滤墨水的平板部件以及由平板形成的阻尼室,该平板在与共用墨室相对的一侧上固定在平板部件上。
    • 9. 发明公开
    • Inkjet recording apparatus
    • 喷墨记录装置
    • EP2100741A2
    • 2009-09-16
    • EP09003535.3
    • 2009-03-11
    • Brother Kogyo Kabushiki Kaisha
    • Iwao, Naoto
    • B41J2/21
    • B41J2/2114C09D11/00C09D11/54
    • A inkjet recording apparatus includes a first inkjet head (12K,12M,12C,12Y) which ejects color ink having one of a hydrophobic property and an aqueous property; a second inkjet head (12T) which ejects colorless ink having the remaining the other property; and an ejection controller (32) which controls the first inkjet head to eject the color ink on. an image region and controls the second inkjet head to eject the colorless ink on an ejection region contacting the image region with a boundary therebetween. The ejection controller controls the first and second inkjet heads so that the colorless ink ejected from the second inkjet head reaches a second minute segment in the ejection region, the second minute segment adjacent to a first minute segment in the image region with the boundary interposed therebetween, before the color ink ejected from the first inkjet head reaches the first minute segment in the image region.
    • 一种喷墨记录设备包括:第一喷墨头(12K,12M,12C,12Y),其喷射具有疏水性和含水性之一的彩色油墨; 喷射具有剩余其他性质的无色油墨的第二喷墨头(12T) 以及控制第一喷墨头喷射彩色墨水的喷射控制器(32)。 控制第二喷墨头以在其间具有边界的图像区域接触的喷射区域上喷射无色墨水。 喷射控制器控制第一和第二喷墨头,使得从第二喷墨头喷射的无色墨水在喷射区域中达到第二微小区段,第二微小区段与图像区域中的第一微小区段相邻且边界介于它们之间 在从第一喷墨头喷射的彩色墨水到达图像区域中的第一分钟段之前。