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    • 10. 发明授权
    • Ink jet head and ink jet recording apparatus
    • 喷墨头和喷墨记录装置
    • US07192130B2
    • 2007-03-20
    • US10752511
    • 2004-01-08
    • Kazuo ShimizuOsamu Machida
    • Kazuo ShimizuOsamu Machida
    • B41J2/175B41J2/04
    • B41J2/14145B41J2/17523B41J2/17563B41J2002/14403
    • An ink jet head includes: a pressure chamber that stores an ink and has an orifice; a filter plate including a through hole portion and a filter portion, the through hold portion disposed separately from the filter portion with a certain gap; a supply unit that supplies the ink through the filter portion to the pressure chamber; and a jetting unit that jets ink droplets through the orifice from the pressure chamber. The filter portion is formed to have a first aperture ratio. At least one through hole is formed on the through hole potion so that the filter portion has a second aperture ratio. The first aperture ratio is smaller than the second aperture ratio.
    • 喷墨头包括:储存油墨并具有孔口的压力室; 所述过滤板包括通孔部分和过滤器部分,所述通过保持部分与所述过滤器部分分开设置有一定间隙; 供应单元,其通过过滤器部分将油墨供应到压力室; 以及喷射单元,其从压力室喷射墨滴通过孔口。 过滤器部分形成为具有第一孔径比。 在通孔部分上形成至少一个通孔,使得过滤器部分具有第二孔径比。 第一开口率小于第二开口率。