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    • 3. 发明授权
    • Voltage applicator for limiting charge distribution in ESA printing
equipment
    • 电压施加器用于限制ESA印刷设备中的电荷分布
    • US4493256A
    • 1985-01-15
    • US584614
    • 1984-02-29
    • Bruce E. HyllbergGeorge B. Brands
    • Bruce E. HyllbergGeorge B. Brands
    • B41F13/18B41F5/00
    • B41F13/18Y10S101/37
    • Several embodiments of a voltage applicator device are disclosed for contacting an impression roller in an electrostatically assisted (ESA) printing machine. The voltage applicator device has rolling conductive surfaces which are spaced apart and selectively connected to a voltage source to limit voltage application to the width of one or more partial webs being run through the machine. In the various embodiments, the conductive surfaces outside the web area can be left unconnected, but are preferably grounded or connected to a voltage of opposite polarity, to drain current from portions of the impression roller lying beyond the web. The rolling conductive surfaces can be formed as individual rollers or preferably as a segmented voltage application roller carrying electrical circuitry to connect the conductive surfaces to the voltage source through a roller journal shaft.
    • 公开了用于接触静电辅助(ESA)印刷机中的压印辊的电压施加器装置的几个实施例。 电压施加器装置具有滚动导电表面,其间隔开并选择性地连接到电压源,以将施加的电压限制为穿过机器的一个或多个部分网的宽度。 在各种实施例中,腹板区域外部的导电表面可以保持未连接,但优选地接地或连接到相反极性的电压,以从位于幅材之外的压印辊的部分排出电流。 滚动导电表面可以形成为单独的辊或优选地形成为承载电路的分段电压施加辊,以通过辊轴颈将导电表面连接到电压源。
    • 7. 发明授权
    • Impression roller for limiting charge distribution
    • 压印辊用于限制电荷分布
    • US4513660A
    • 1985-04-30
    • US644645
    • 1984-08-24
    • George B. BrandsBruce E. Hyllberg
    • George B. BrandsBruce E. Hyllberg
    • B41F13/18
    • B41F13/18
    • An impression roller for electrostatically assisted printing distributes a charge across a web of packaging material. The roller has considerably more resistance in the longitudinal direction than in the circumferential direction to restrict the distribution of charge to portions of the roller extending beyond the web. The lower resistance in the circumferential direction is provided by a set of looped conductors--either conductive rubberized strips or wire loops--which are embedded in an outer layer of semiconductive material of the roller to allow electrical current traveling in the circumferential direction to bypass portions of the semiconductive material. The electrical current encounters considerably more resistance in the longitudinal direction, because the conductors are spaced longitudinally along the rollers at intervals and any current traveling from one looped conductor to another travels through the semiconductive material.
    • 用于静电辅助印刷的压印辊在包装材料的网上分配电荷。 辊子在纵向方向上比在圆周方向上具有更大的阻力,以限制电荷分布到延伸超过卷材的辊的部分。 圆周方向上的较低电阻由一组环形导体(即导电橡胶条或线环)提供,这些导体胶带或线环被嵌入到辊的半导体材料的外层中,以允许电流在圆周方向上行进以绕过部分 半导体材料。 电流在纵向方向上遇到相当大的阻力,因为导体间隔地沿着辊纵向间隔开,并且从一个环状导体传播到另一个环状导体的任何电流都穿过半导体材料。
    • 8. 发明授权
    • Gap filler blanket for printing cylinder
    • 印刷滚筒间隙填料橡皮布
    • US4635550A
    • 1987-01-13
    • US710060
    • 1985-03-11
    • George B. BrandsJames R. Carlson
    • George B. BrandsJames R. Carlson
    • B41F27/12B41F30/04B41F27/06
    • B41F27/125B41F27/1293B41F30/04
    • A blanket for a printing cylinder of the type having a core with a lateral gap along the periphery of the core is disclosed. The blanket includes a non-extensible backing which is suitable to be wrapped around the core and has first and second opposed lateral ends suitable to be attached to the core within the gap. A filler portion extends laterally across and is fixed to the first lateral end and an elastomeric covering is secured over the backing and filler portion. The filler portion spans the gap beneath the covering between the first and second lateral ends of the backing to support the covering over the gap. Supporting the covering over the gap provides the printing cylinder with a substantially continuous circumference to reduce shocks and vibrations throughout the printing press.
    • 公开了一种用于具有沿着芯的周边具有横向间隙的芯的类型的印刷滚筒。 毯子包括不可延伸的背衬,其适于缠绕在芯上并且具有适于在间隙内附接到芯的第一和第二相对的侧向端。 填充部分横向延伸并固定到第一侧端,并且弹性体覆盖物固定在背衬和填充部分上。 填料部分跨越衬垫的第一和第二侧端之间的覆盖物下方的间隙,以将盖覆盖在间隙上。 支撑在间隙上的覆盖物为印刷滚筒提供了基本连续的圆周,以减少整个印刷机的冲击和振动。