Browse Prior Art Database

Original Publication Date: 1980-Dec-31
Included in the Prior Art Database: 2004-Apr-02

Publishing Venue

Xerox Disclosure Journal


Disclosed is a charging apparatus utilizing basic dicorotron technology serving as a multiple function device. By way of example, such a device could be used for charging and discharging a surface in subsequent steps in each of two sections of a multiple dicorotron. The apparatus could also function as two different stages of a single function dicorotron as might be desirable if the dicorotron is to apply to a constant voltage charge. The apparatus employs multiple coronode wires and shield electrodes that are electrically insulated so that each wire could have a different AC energization voltage applied to it and each shield electrode a different DC bias voltage. As an alternative design, all of the coronode wires could be connected in parallel with only the shield biased to different DC voltages. This latter arrangement might be appropriate for a combined transf er/detack device in which a DC voltage is applied to the transfer shield and the detack shield might be grounded or have a DC voltage of an opposite voltage applied to it. By changing the electrical interconnections between the coronode wires and/or the electrode shields, one design could be utilized in several applications. If the electrical interconnections are made at a point external to the dicorotron, the same for construction may be used on all applications and only the voltages applied to the wires and shields need be changed for different applications.