Electrostatic recording on insulators by nonwetting conducting liquids

摘要

Highly efficient charge transfer to and from insulator surfaces (e.g., Mylar) has been obtained using moving nonwetting liquid probes (e.g., water). Within a range of measurements (applied fields ≥ 103V/cm and current densities ≤ 10−4A/cm2) good agreement exists with calculated charging rates for applied voltages ≥ 20 V of either polarity. Recording charge patterns exhibit resolutions 500 h.