Method of making plated intaglio printing form

Claim 1

THE METHOD OF MAKING A PLATED INTAGLIO SURFACE PRINTING FORM, WHICH COMPRISES COVERING A METAL BASE WITH A SHEATH OF A FILM-FORMING RESINOUS PLASTIC WHICH IS NORMALLY NON-POROUS AND CONTAINS POWDERED CARBON AND IS READILY STRIPPABLE FROM THE METAL BASE, ELECTRICALLY PERFORATING SAID SHEATH IN MINUTE DISCRETE AREAAS BY ELECTRIC SIGNALS APPLIED THERETOI AND CONTROLLED BY CORRESPONDING ELEMENTAL AREAS OF THE SUBJECT MATTER TO BE PRINTED TO FORM DIRECTLY A PERFORATED RECORD OF THE SUBJECT MATTER, PLATING SAID BASE THROUGH SAID PERFORATIONS TO FORM RAISED PLATED DOTS CORRESPONDING TO THE PRERFORATIONS IN SAID SHEATH, AND THEN STRIPPING SAID SHEATH FROM SAID BASE.