Record means and method of making same

Claim 1

A METHOD OF EMBOSSING INFORMATION ON A RECORD MEDIUM SO THAT THE SAME IS READABLE BY THE SENSE OF TOUCH AND WHEREIN SAID RECORD MEDIUM INCLUDES A THIN BASE LAYER WITH AN ELECTRICAL CHARGE RETENTIVE SURFACE LAYER BONDED THERETO, SAID BASE LAYER BEING HARD AND RELATIVELY INCOMPRESSIBLE WITH R ESPECT TO SAID SURFACE LAYER AND SAID SURFACE LAYER HAVING A GREATER DEGREE OF PLASTICITY THAN SAID BASE LAYER, COMPRISING THE STEPS OF ELECTRICALLY CHARGING DISCRETE AREAS ON SAID SURFACE LAYER IN ACCORDANCE WITH SAID INFORMATION, PASSING SAID RECORD MEDIUM THROUGH A RECEPTACLE CONTAINING PARTICLES MORE RIGID THAN SAID SURFACE LAYER, WHEREBY SAID PARTICLES ARE CAUSED TO ADHERE TO THE CHARGED DISCRETE AREAS OF THE SURFACE LAYER, REMOVING EXCESS PARTICLES NOT SO ADHERED TO SAID AREAS, AND THEREAFTER APPLYING PRESSURE TO OPPOSITE SURFACES OF THE RECORD MEDIUM TO FORCE THE PARTICLES SO ADHERED INTO THE SURFACE LAYER TO WEDGE APART THE SMAE WITHOUT REDUCING THE CROSS-SECTIONAL AREA OF THE BASE LAYER AND TO THEREBY CAUSE SAID DISCRETE CHARGED AREAS AND LIKE AREAS OF THE BASE LAYER IN CONTACT WITH SAID CHARGED AREAS TO BUCKLE OUTWARDLY FROM THE GENERAL PLANE OF THE RECORD MEDIUM AND IN THE DIRECTION OF THE SIDE THEREOF CARRYING SAID SURFACE LAYER.