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    • 6. 发明授权
    • Thermal electrostatic ink-jet recording apparatus
    • 热静电喷墨记录装置
    • US4748458A
    • 1988-05-31
    • US44955
    • 1987-05-01
    • Nanao InoueKoichi SaitoEiichi AkutsuYoshihiko FujimuraKiyoshi Horie
    • Nanao InoueKoichi SaitoEiichi AkutsuYoshihiko FujimuraKiyoshi Horie
    • B41J2/05B41J2/015B41J2/06B41J2/065G01D15/16
    • B41J2/065B41J2002/061
    • A thermal electrostatic ink-jet recording apparatus includes an orifice for storing and jetting ink. The orifice is formed between first and second plate members and a longitudinal array of heating elements is formed on one of the plate members and is covered by an insulating layer. An electrically conductive layer is formed either on the insulating layer or the other plate member and cooperates with a counter electrode supporting a recording medium to apply an electrostatic field to ink in the orifice. The electrically conductive layer includes a central portion that extends substantially to the egress of the orifice in the area where ink is contained in the orifice and peripheral portions on either side of the orifice that are not in contact with the ink and that are spaced substantially away from the egress of the orifice. The spacing of the peripheral portion away from the egress of the orifice prevents a gas discharge phenomenon that induces instability in ink jetting.
    • 热静电喷墨记录装置包括用于存储和喷射墨水的孔口。 孔口形成在第一和第二板构件之间,并且加热元件的纵向阵列形成在其中一个板构件上并被绝缘层覆盖。 在绝缘层或另一个板构件上形成导电层,并与支撑记录介质的对电极配合,以向孔中的墨施加静电场。 导电层包括中心部分,其基本上延伸到在孔中容纳有墨水的区域中的孔的出口以及不与墨接触并且基本上间隔开的孔的任一侧上的周边部分 从孔的出口。 外围部分与孔口出口的间距防止了喷墨过程中引起不稳定的气体放电现象。
    • 10. 发明授权
    • Printing head
    • 打印头
    • US4935755A
    • 1990-06-19
    • US252317
    • 1988-09-30
    • Eiichi AkutsuHiroo Soga
    • Eiichi AkutsuHiroo Soga
    • B41J2/32B41J2/325B41J2/39
    • B41J2/39
    • A printing head comprising a thin resin board, printing electrodes positioned in parallel with each other mounted thereon, projections of an electroconductive substance on the electrodes, and slits cut in the head between the projections, extending from the front edge of the resin board to a point midway between the front and rear edges of the resin board. An electrically insulating layer may be deposited on the surface of the head, leaving the projections clear. The thin elastic resin board can deform easily to comply to deformations and irregularities in the printing medium surface. The slits allow removal of foreign matter, such as dust. The slits further allow the electrode projections to contact the printing medium singly or in small groups, across the length of the printing head, rather than all at once, so that the presence of foreign matter on one electrode will not prevent any other electrode projection from making contact. Adequate reliable contact of the electrodes may be maintained to produce high print quality at a reduced stylus pressure, thereby decreasing wear and required maintenance on the printer head and extending its service life.
    • 一种打印头,包括薄树脂板,彼此平行地安装在其上的印刷电极,电极上的导电物质的突起,以及从树脂板的前边缘延伸到突起之间的头部中的狭缝, 点在树脂板的前后边缘之间的中间。 电绝缘层可以沉积在头部的表面上,从而使突出物清晰。 薄弹性树脂板可以容易地变形,以符合打印介质表面的变形和不规则。 狭缝允许除去诸如灰尘的异物。 狭缝还允许电极突起在打印头的整个长度上单独或以小组接触打印介质,而不是一次性地接触印刷介质,使得在一个电极上存在异物不会阻止任何其它电极突出 联系。 可以保持电极的充分的可靠接触,以便在降低的触针压力下产生高打印质量,从而减少打印头上的磨损和维护,延长其使用寿命。