The Ionographic Beam Positioning And Crosstalk Correction Using Grey Levels is a method and apparatus which solves the problem of poor density and definition of an image formed by an ion current (20) projected from an ionographic print head (10), caused by electric field crosstalk between adjacent modulation...http://www.google.de/patents/US5270729?utm_source=gb-gplus-sharePatent US5270729 - Ionographic beam positioning and crosstalk correction using grey levels
