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1.发明授权
公开(公告)号：US6150824A
公开(公告)日：2000-11-21
申请号：US961061
申请日：1997-10-30
申请人： Satchidanand Mishra , Edward A. Domm , Zoran D. Popovic , Denis C. Thomas , Samy A. Mesbah , Dennis J. Prosser , Steven P. Nonkes
发明人： Satchidanand Mishra , Edward A. Domm , Zoran D. Popovic , Denis C. Thomas , Samy A. Mesbah , Dennis J. Prosser , Steven P. Nonkes
摘要： A contactless process for detecting electrical patterns on the outer surface of a member comprising providing a member having a charge pattern on an outer surface, repetitively measuring the charge pattern on the outer surface of the member with an electrostatic voltmeter probe maintained at a substantially constant distance from the surface, the distance between the probe and the imaging member being slightly greater than the minimum distance at which Paschen breakdown will occur to form a parallel plate capacitor with a gas between the probe and the surface, the frequency of repetition being selected to cause all time dependent signals to fall out of phase by a predetermined amount, and averaging the out of phase time dependent signals over a sufficient number of measuring repetitions to eliminate the time dependent signals. In one embodiment, the contactless process detects surface potential charge patterns in an electrostatographic imaging member. Apparatus for carrying out these processes are also described.
摘要翻译： 一种用于检测构件的外表面上的电气图案的非接触式方法，包括在外表面上提供具有电荷图案的构件，用保持在基本上恒定距离的静电电压表探针重复测量构件的外表面上的电荷图案 从表面来看，探针与成像构件之间的距离略大于发生帕辛击穿的最小距离，以便在探头和表面之间形成具有气体的平行平板电容器，选择重复频率导致 所有时间相关信号相位相差预定量，并通过足够数量的测量重复对异相时间相关信号进行平均，以消除与时间相关的信号。 在一个实施例中，非接触式过程检测电摄影成像构件中的表面电荷电荷模式。 还描述了用于执行这些处理的装置。
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公开(公告)号：US5324942A
公开(公告)日：1994-06-28
申请号：US992512
申请日：1992-12-17
CPC分类号： H01T19/00 , G03G15/0291
摘要： The present invention is an apparatus for tuning or altering the charge potential limiting effect that a scorotron grid has upon an adjacent charge receiving surface. The scorotron charging apparatus utilizes corona producing means, spaced above the charge retentive surface, for emitting corona ions in response to a high voltage potential applied thereto, and a flexible grid, suspended between said corona producing means and the charge retentive surface in a nonplanar fashion, such that the spacing between said grid and the charge retentive surface is variable along at least one region of said grid.
摘要翻译： 本发明是一种用于调节或改变遮光栅格对相邻电荷接收表面具有的电荷电位限制效应的装置。 电晕放电装置利用在电荷保持表面上方间隔开的电晕放电装置，用于响应施加到其上的高电压电位而发射电晕离子，以及以非平面方式悬挂在所述电晕产生装置和电荷保持表面之间的柔性栅格 使得所述栅格和电荷保持表面之间的间隔沿所述栅格的至少一个区域是可变的。
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3.发明授权
公开(公告)号：US5300986A
公开(公告)日：1994-04-05
申请号：US991910
申请日：1992-12-17
IPC分类号： G03G15/02
CPC分类号： G03G15/0266 , G03G15/0291
摘要： The present invention is a charging apparatus capable of electrically tuning or altering, on a relatively local scale, the corona ion current passing between a corona producing device and a charge retentive surface. The charging apparatus, which may be either a corotron or a scorotron, is specifically adapted to apply a uniform charge to a charge retentive surface which characteristically exhibits non-uniform charging behavior. More specifically, the charging apparatus comprises corona producing devices, spaced apart from the charge retentive surface, for emitting a corona ion current, and device, responsive to a bias voltage, for locally altering the corona ion current passing between said corona producing device and the charge retentive surface. In the described embodiments, the ion current altering device includes segmented grids, segmented shields and segmented electrodes, all of which may be maintained at variable bias voltages to produce local variation in the ion current passing to the charge retentive surface.
摘要翻译： 本发明是一种充电装置，其能够在相对局部的尺度上对通过电晕放电装置和充电保持性表面之间的电晕离子电流进行电调谐或改变。 可以是corotron或scorotron的充电装置特别适用于向特性表现出不均匀充电行为的充电保持性表面施加均匀的电荷。 更具体地，充电装置包括与电荷保持表面间隔开的用于发射电晕离子电流的电晕产生装置，以及响应于偏置电压的装置，用于局部地改变在所述电晕产生装置和所述电晕放电装置之间通过的电晕离子电流 充电保持性表面。 在所描述的实施例中，离子电流改变装置包括分段栅格，分段屏蔽和分段电极，所有这些都可以保持在可变偏置电压，以产生通过电荷保持表面的离子电流的局部变化。
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