Base Coat in Electroerosion Recording Media
Original Publication Date: 1985-Jun-01
Included in the Prior Art Database: 2005-Feb-18
In electroerosion printing, a thin metallic layer is electrically eroded to provided indicia on the recording medium. Erosion is carried out by a multi-styli printhead which is scanned across the thin metal layer, the electrodes of which are selectively energized to form the indicia. In this operation, severe scratching of the metal layer can occur along with plastic deformation of the substrate support for the thin metal layer. Often, a base layer is used between the thin metal layer and the substrate. In order to eliminate these problems, a superior, hard, thin base layer is used, which includes graphite and a hard particulate material, such as silica, preferably dispersed uniformly in a thermoset cross-linked polymer binder.