(under subclass 690) Apparatus wherein the distributed material is in the form of charged particles which respond to an influence or variation in an electric force field created by the charging means at the time the particles are formed, thereby obtaining a charge of opposite polarity to that of the charging means.
(1) Note. Induction charging is a different type of particle charging means than a "corona discharge" charging means in which particles, after they are formed, are charged with the same polarity as the corona discharge electrode by direct transfer of that charge through contact with either the electrode itself or with atmospheric ions generated by the electrode.
