Method for forming toner images with two distinct toners

Details Method for forming toner images with two distinct toners Method for forming toner images with two distinct toners

1996-01-17

1998-05-05

Wong, Peter S.

Incremental printing of symbolic information

Electric marking apparatus or processes

Electrostatic

399232, G03G 1500, B41J 2385

Patent

active

057482187

ABSTRACT:
An image forming method which forms a two color toner image or an image made up of two types of toners of the same color includes forming a first image with discharged area development (DAD) and a second image with charged area development (CAD). Resolution and sharpness of the first toner image is improved if the second toner image is formed by imagewise exposing a photoconductive member through a transparent base. Scavenging of the first toner image by the development of the second toner image and other aspects of the method are improved by use of a rotating magnetic core to drive a developer containing hard magnetic carrier in a soft brush through contact with the electrostatic image.

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