Electrostatic printing ink and process for preparing same

Claim 2

AN ELECTROSTATIC CHARGE PATTERN DEVELOPING INK COMPRISING PELLETS OF ALUMINA-SILICA GEL CATALYST BETWEEN SATUAND 120 MICRONS IN DIAMETER, COATED AND PARTIALLY SATURATED WITH A MIXTURE OF A WATER-SUSPENDIBLE, ORGANIC DYE, A POLAR, WATER-SOLUBLE, ORGANIC, VISCOUS MATERIAL FOR FACILITATING THE COATING OF SAID PELLETS BY SAID DYE AND A HYGROSCOPIC SALT CAPABLE OF IONIZING AND IN SUFFICIENT QUANTITY TO RENDER SAID INK CONDUCTIVE.

Claim 3

A PROCESS OF PREPARING AN INK FOR DEVELOPING ELECTROSTATIC CHARGE PATTERNS COMPRISING: SCREENING PARTICLES OF NONVITREOUS, ABSORBENT, NON-FRIABLE CERAMIC IN A RANGE BETWEEN 20 AND 120 MICRONS IN DIAMETER, HEATING TO ABOUT BOILING POINT WATER CONTAINING A WATER-SUSPENDIBLE ORGANIC DYE, A WATER-SOLUBLE SALT CAPABLE OF IONIZING AND IN SUFFICIENT QUANTITY TO RENDER SAID INK CONDUCTIVE, AND A SUFFICIENT AMOUNT OF VISCOUS, POLAR, WATER-SOLUBLE, ORGANIC MATERIAL TO FACILITATE UNIFORM COATING OF SAID PARTICLES, MIXING SAID SCREENED PARTICLES OF NONVITREOUS CERAMICS IN THE WATER TO A VISCOUS PASTE CONSISTENCY, AND DRYING TO A RELATIVELY CONDUCTIVE FLUID COLLECTION OF SOLID PARTICLES.

Claim 4

A PROCESS OF PREPARING AN INK FOR DEVELOPING ELECTROSTATIC CHARGE PATTERNS COMPRISING: SCREENING PARTICLES OF NONVITREOUS, ABSORBENT, NON-FRIABLE CERAMIC IN A RANGE BETWEEN 20 AND 120 MICRONS IN DIAMETER, HEATING TO ABOUT BOILING POINT WATER CONTAINING A WATER-SUSPENDIBLE ORGANIC DYE, A WATER-SOLUBLE SALT CAPABLE OF IONIZING AND IN SUFFICIENT QUANTITY TO RENDER SAID INK CONDUCTIVE, AND A SUFFICIENT AMOUNT OF VISCOUS, POLAR, WATER-SOLUBLE, ORGANIC MATERIAL TO FACILITATE UNIFORM COATING OF SAID PARTICLES, MIXING SAID SCREENED PARTICLES OF NONVITREOUS CERAMICS IN THE WATER TO A VISCOUS PASTE CONSISTENCY, AND DRYING TO A RELATIVELY CONDUCTIVE FLUID COLLECTION OF SOLID PARTICLES.