Electrosensitive recording materials and their manufacture

Claim 1

IN A HEAT-SENSITIVE, ELECTRICALLY-CONDUCTIVE RECORDING PAPER THE COMBINATON OF A CONDUCTING BASE SHEET COMPRISING A BLACK PAPER SHEET HAVING CONDUCTIVE CARBON PARTICLES DISPERSED THERETHROUGH WITH A MOISTURIZED COVER LAYER COATING ONE SURFACE OF SAID BASE SHEET, SAID MOISTURIZED COVER LAYER COMPRISING THE FOLLOWING MATERIALS IN THE FOLLOWING RELATIVE PROPORTIONS: 30 ML. OF A COMMERCIAL SHELLAC SOLUTION, 2 GRAMS OF SODIUM CHLORIDE, 15 ML. OF GLYCEROL, 15 GRAMS OF TITANIUM DIOXIDE PIGMENT, AND 1.5 GRAMS OF ALUMINUM CONDUCTIVE POWDER; SAID SODUM CHLORIDE, GLYDEROL, TITANIUM DIOXIDE, AND ALUMINUM POWDER BEING DISPERSED SUBSTANTIALLY UNIFORMLY THROUGHOUT SAID SHELLAC SOLUTION TO PROVIDE A A MOISTURIZED, WHITE, OPAQUE, CONDUCTIVE COATING RESPONSIVE TO AN ELECTRICALLY SIGNALLING STYLUS APPLIED TO SELECTABLE AREAS OF SAID COATING TO EXPOSURE SAID BASE SHEET THEREBELOW TO RECORD CONSPICUOUSLY SHARP PERMANENT MARKINGS ON SAID RECORDING PAPER.