ELECTROCHEMICAL MARKING STENCIL, METHOD AND SYSTEM

摘要

A method and system for the electrochemical marking conductive metal parts is disclosed, the method and system being reliant upon a thermoplastic resin sheet material having expansive regions impervious to electrolyte solution and an imagewise pattern of perforations formed thermally in a predetermined pattern. The stencil, when placed between a firing electrode and a grounded metal part, enables communication of the firing electrode and grounded part via the electrolyte solution and etching of the conductive part in regions corresponding to the perforations. Identification marking stencils can be made on demand transmitting digital information corresponding to the desired identification pattern from a central processing unit to a thermal recorder (perforation) apparatus.