Apparatus for producing high gravity half-tone dot images using an electrophotographic recording apparatus

摘要

The process generates a macro-charge zone inkable by toner applicators and delimited by an inking limit (EG) having an adjustable contour on a photoconductor using a position variable controllable light source. The lighting power of the source and its photoconductor irradiation position is controlled and the bias voltage applicable between the photoconductor and the toner applicator is adjusted. Thus an electrostatic potential relief made of individual adjacent micro-charge zones of lighting-dependent size is generated on the photoconductor and the inking limit is set. The contour of the inking limit is determined by the bias voltage level on the potential relief. <IMAGE>