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    • 6. 发明授权
    • Current regulated voltage limited high voltage power supply for corona charger
    • 用于电晕充电器的电流调节电压限制高压电源
    • US06831818B2
    • 2004-12-14
    • US09866182
    • 2001-05-25
    • Andreas DickhoffCharles H. Hasenauer
    • Andreas DickhoffCharles H. Hasenauer
    • H02H700
    • G03G15/0283G05F1/12H01T19/00
    • A method and apparatus for provision of a power supply that combines the advantages of current regulation with voltage limitation to enable corona chargers that can be run at higher current regulated set points for lower resistance sheets. The voltage limit will protect against arcing when high resistance media is used. This wider operation window can be provided without the need to track sheet types in the process and shift the operating set points, which would result in much more complicated machine control algorithms. The regulation and limit reference controls retain the ability of changing the operating set points of the power supply, such that it can be adapted to alternate physical configurations of the discharging system and the printing system.
    • 一种用于提供电源的方法和装置,其将电流调节的优点与电压限制相组合,以使电晕充电器能够在较低电阻值的较高电流调节设定点运行。 当使用高电阻介质时,电压限制将防止电弧。 可以提供这种更宽的操作窗口,而不需要在过程中跟踪纸张类型并移动操作设定点,这将导致更复杂的机器控制算法。 调节和限制参考控制器保持改变电源的操作设定点的能力,使得其可以适应排放系统和打印系统的交替物理配置。
    • 8. 发明授权
    • Apparatus and method for Z-folding sheets
    • Z型折页的装置和方法
    • US5980444A
    • 1999-11-09
    • US976769
    • 1997-11-24
    • Andreas Dickhoff
    • Andreas Dickhoff
    • B65H45/20B31F1/00
    • B65H45/20
    • A pivotedly mounted pressure roller unit, associated with which is a folding roller pair, is arranged on the transport path of a sheet to be folded. The pressure roller unit has a first and a second roller group, having rollers offset alternatingly eccentrically with respect to one another and mounted in independently rotatable fashion, which coact with the folding rolls in such a way that simultaneously, the rollers of the first roller group can be laid nonpositively against the one folding roller, and the rollers of the other roller group against the other folding roller. The transport speed (v.sub.2) of the folding rolls can be reduced to a lower transport speed (v.sub.1), thus causing a transport roller pair driven at an unchanging transport speed to bulge the sheet into an arc prior to entry into the folding rolls. By pivoting the pressure roller unit against the folding rolls, the arc and the trailing end of the sheet are transported simultaneously by the pressure roller unit. Once the folding rolls have grasped the trailing sheet end, the pressure roller unit is pivoted away and the folds in the sheet are made.
    • 与要折叠的片材的传送路径上布置有与折叠辊对相关联的枢转安装的压力辊单元。 压辊单元具有第一和第二辊组,其具有相对于彼此交替偏心地偏移并且以可独立旋转的方式安装的辊,其以折叠辊的方式与第一辊组的辊同时 可以非正式地放置在一个折叠辊上,另一个辊组的辊子抵靠另一个折叠辊。 折叠辊的输送速度(v2)可以降低到较低的输送速度(v1),从而使得以不变的输送速度驱动的输送辊对在进入折叠辊之前将纸张凸起成电弧。 通过使加压辊单元相对于折叠辊枢转,片材的弧和后端由加压辊单元同时传送。 一旦折叠辊已经抓住后端片,则压辊单元枢转并且片材中的褶皱被制成。