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    • 8. 发明授权
    • Elastic ink jet printing head and method for manufacturing head block
thereof
    • 弹性喷墨打印头及其头部块的制造方法
    • US6095638A
    • 2000-08-01
    • US972729
    • 1997-11-18
    • Junichi SuetsuguKazuo ShimaTadashi MizoguchiHitoshi MinemotoHitoshi TakemotoTomoya SaekiYoshihiro HagiwaraToru Yakushiji
    • Junichi SuetsuguKazuo ShimaTadashi MizoguchiHitoshi MinemotoHitoshi TakemotoTomoya SaekiYoshihiro HagiwaraToru Yakushiji
    • B41J2/06
    • B41J2/06B41J2002/061
    • An electrostatic ink jet printing head includes a head block made of insulating material having a first surface and a second surface which are intercrossing substantially at a right angle. A plurality of ink channel grooves are formed on the first surface and the second surface in directions perpendicular to a ridge between the two surfaces. A plurality of recording electrodes are formed on convexities between the ink channel grooves and near ejection points located on the ridge. A cover is attached to the head block for covering the ink channel grooves and exposing the ejection points to the air. Ink is forcibly circulated by a forcible ink circulation means such as a pump. The recording electrodes are formed in the lower reaches of the ink stream compared to the ejection points, and a plurality of electrophoresis electrodes are formed in the ink channel grooves in the upper reaches of the ink stream compared to the ejection points. According to the electrostatic ink jet printing head, excessively higher concentration of the toner particles at the ejection points is prevented and stable ejection of the ink from each ejection point can be executed independently of history of ejection of each recording electrode, and stable ejection of the ink from definite and precise ejection points can be executed, thereby high precision clear printing is realized with a simple structure of the head and at a low cost.
    • 静电喷墨打印头包括由绝缘材料制成的头部块,该头部块具有基本上以直角交叉的第一表面和第二表面。 在第一表面和第二表面上沿与两个表面之间的脊线垂直的方向形成多个油墨通道槽。 多个记录电极形成在油墨通道槽和位于脊上的近喷射点之间的凸部上。 头盖附接到头部块以覆盖墨水通道槽并将喷射点暴露在空气中。 油墨通过强制性的油墨循环装置例如泵被强制循环。 与喷射点相比,记录电极形成在墨水的下游,并且与喷射点相比,在油墨流的上游的油墨通道槽中形成多个电泳电极。 根据静电喷墨打印头,防止喷射点处的调色剂颗粒浓度过高,并且可以独立于每个记录电极的喷射历史来执行墨从每个喷射点的稳定喷射,并且稳定地喷射 可以执行来自确定和精确喷射点的墨水,从而以简单的头部结构并以低成本实现高精度的清晰印刷。
    • 9. 发明授权
    • Electrostatic ink-jet recording head
    • 静电喷墨记录头
    • US6079817A
    • 2000-06-27
    • US049125
    • 1998-03-27
    • Kazuo ShimaJunichi SuetsuguTadashi MizoguchiHitoshi MinemotoTomoya SaekiHitoshi TakemotoYoshihiro HagiwaraToru Yakushiji
    • Kazuo ShimaJunichi SuetsuguTadashi MizoguchiHitoshi MinemotoTomoya SaekiHitoshi TakemotoYoshihiro HagiwaraToru Yakushiji
    • B41J2/06
    • B41J2/06B41J2002/061
    • The electrostatic ink-jet recording head according to the present invention comprises: recording electrodes which eject ink towards the recording paper; an opposing electrode for generating a prescribed electric field between the recording electrodes and the opposing electrode; and ink discharge end sections formed in the vicinity of the recording electrodes. The ink discharge end sections are formed closer to the opposing electrode than the end portions of the recording electrodes.In this case, the equipotential lines in the region of the ink discharge end sections when a recording voltage is applied are virtually perpendicular to the direction in which the ink is discharged. This is because, the recording electrodes are positioned slightly behind the ink discharge end sections in the ink discharge member. In this case, an electrostatic force acts on the toner particles near the ink discharge end sections in the direction of the ink discharge end sections. Therefore, even when a recording voltage is applied, there is a continuous supply of toner particles to the ink discharge end sections.As described above, in the electrostatic ink-jet recording head according to the present embodiment, a convex ink meniscus is formed in front of the recording electrodes. Therefore, toner particles gather at the discharge points, even when a recording voltage is applied, and thus a sufficient quantity of toner particles for forming a desired dot size can be supplied.
    • 根据本发明的静电喷墨记录头包括:向记录纸喷射墨水的记录电极; 用于在记录电极和相对电极之间产生规定电场的相对电极; 以及在记录电极附近形成的排墨端部。 排墨端部比记录电极的端部更靠近对置电极。 在这种情况下,当施加记录电压时,在排墨端部区域中的等电位线实际上垂直于油墨排出的方向。 这是因为,记录电极位于墨排出部件的墨排出端部的后方。 在这种情况下,静电力作用于排墨端部附近的调色剂颗粒沿着排墨端部的方向。 因此,即使当施加记录电压时,连续向墨水排出端部供应调色剂颗粒。 如上所述,在根据本实施例的静电喷墨记录头中,在记录电极的前面形成凸起的墨水弯月面。 因此,即使施加记录电压,调色剂颗粒聚集在放电点,因此可以提供足够量的用于形成所需点尺寸的调色剂颗粒。