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    • 105. 发明授权
    • Ink-jet recording head
    • 喷墨记录头
    • US08083322B2
    • 2011-12-27
    • US12606372
    • 2009-10-27
    • Keiji TomizawaShuichi Murakami
    • Keiji TomizawaShuichi Murakami
    • B41J2/05
    • B41J2/1433B41J2/1404B41J2/145B41J2002/14387B41J2002/14403B41J2002/14467B41J2002/14475
    • An ink-jet recording head includes a discharge-port portion including a first discharge-port portion continuing from a discharge port, and a second discharge-port portion communicating the first discharge-port portion with a bubble generation chamber. The second discharge-port portion has an end surface that includes a border portion bordering the first discharge-port portion and is parallel to a main surface of an element substrate. The cross-sectional area of the second discharge-port portion, anywhere from an opening surface facing the bubble generation chamber to an end surface facing the first discharge-port portion, that is parallel to the main surface of the element substrate, is larger than the area of the border portion. The cross-section of the opening surface of the second discharge-port portion has a length in a direction perpendicular to an arrangement direction of the discharge ports that is greater than its length in a direction parallel to the arrangement direction.
    • 喷墨记录头包括排出口部分,该排出口部分包括从排出口连续的第一排出口部分和将第一排出口部分与气泡生成室连通的第二排出口部分。 第二排出口部具有端面,该端面包括与第一排出口部分相邻的边界部分,并且平行于元件基板的主表面。 第二排出口部分的从面向气泡产生室的开口表面到面向第一排出口部分的端面的任何位置的横截面面积与元件基板的主表面平行的面积大于 边界部分的区域。 第二排出口部分的开口表面的横截面在垂直于排出口的排列方向的方向上的长度大于其在与排列方向平行的方向上的长度。
    • 108. 再颁专利
    • Ink jet recording head
    • 喷墨记录头
    • USRE40994E1
    • 2009-11-24
    • US11633616
    • 2006-12-05
    • Shuichi MurakamiKeiji Tomizawa
    • Shuichi MurakamiKeiji Tomizawa
    • B41J2/15B41J2/145
    • B41J2/14145B41J2002/14387B41J2002/14403
    • An ink jet recording head is provided with a flow path structure capable of enhancing the discharge power, filtering performance, and discharge frequency characteristics even with liquid droplets being made small. The flow path structure thus provided in a supply path makes the flow path sectional area right angled to the liquid flow direction small, and changes the area (shape) thereof at the same time. The flow path structure is formed by a flat square column serving as a first structure for closing a part of the supply path, and plural columns serving as a second structure for closing a part of the supply path. The square column is formed on the base plate in the entire width thereof to close the supply path on the base plate side. The plural columns are arranged on the square column symmetrically with respect to the center of the supply path, and extended from the square column to the discharge port plate in the height direction of the supply path.
    • 喷墨记录头设置有即使液滴变小也能够提高放电功率,滤波性能和放电频率特性的流路结构。 由此,在供给路径上设置的流路结构使流路截面面积与液流方向成直角,同时改变其面积(形状)。 流路结构由用作闭合供给路径的一部分的第一结构的平坦方柱形成,以及用作闭合供给路径的一部分的第二结构的多列。 在基板的整个宽度上形成方柱以封闭基板侧的供给路径。 多个列相对于供给路径的中心对称配置在方柱上,并且在供给路径的高度方向上从方柱延伸到排出口板。
    • 109. 发明申请
    • INK JET RECORDING HEAD
    • 喷墨记录头
    • US20090141091A1
    • 2009-06-04
    • US12275987
    • 2008-11-21
    • Shuichi Murakami
    • Shuichi Murakami
    • B41J2/175
    • B41J2/1404B41J2002/14387B41J2002/14403B41J2202/11
    • An ink jet recording head includes ejection energy generating elements for ejecting ink, flow passages for supplying the ink from an ink supply port to the ejection energy generating elements through a common liquid chamber, a partition wall formed between adjacent two flow passages, a member disposed between the partition wall and the ink supply port, and an opening formed between the partition wall and the member. A flow resistance in the opening from one of the adjacent two flow passages to the other flow passage is different from that in the opening from the other flow passage to the one of the adjacent two flow passages.
    • 喷墨记录头包括用于喷射墨水的喷射能量产生元件,用于通过公共液体腔从供墨口向喷射能量产生元件供应墨水的流动通道,在相邻的两个流动通道之间形成的分隔壁, 在分隔壁和供墨口之间,以及形成在分隔壁和构件之间的开口。 从相对于另一个流动通道的相邻两个流动通道之一的开口中的流动阻力与从另一个流动通道到相邻的两个流动通道中的一个的开口中的流动阻力不同。