Pressure-sensitive record material

Abstract

Abstract RECORD MATERIAL COATING FORMULATIONS AND RECORD MATERIAL SHEETS COATED WITH THICK, PAD-LIKE, PRESSURE-RESPONSIVE, COMPRESSIBLE AND COLLAPSIBLE COATING COMPRISING MINUTE BITS OF MATERIAL HELD FIRMLY TOGETHER ON A SURFACE OF THE RECORD MATERIAL SUBSTRATE WITH BINDER MATERIAL. SAID BITS OF MATERIAL ARE RANDOMLY MIXED IN LOOSE-PACKED INTERSPERSION WITH EACH OTHER THROUGHOUT THE BREADTH AND DEPTH OF THE COATINGS AND COMPRISE MINUTE MARKINGLIQUID DROPLETS WHICH ARE HELD INDIVIDUALLY CONFINED BY ORGANIC, POLYMERIC, FILM MATERIAL AND OPTIONALLY COMPRISE FILLER MATERIAL PARTICLES OCCUPYING PART OF THE SPACE BETWEEN THE LOOSE-PACKED MARKING-LIQUID DROPLETS. BECAUSE THEY ARE LOOSELY PACKED, THE COATINGS ARE CRUSHABLE IN TWO STAGES OF DEGREES IN THAT THEY YIELD TO WEAK PRESSURES, SUCH AS THOSE ASSOCIATED WITH CARELESS HANDLING, BY BEING COMPRESSED AND PACKED TO A FIRST STAGE WITHOUT RELEASE OF MARKING LIQUID, AND COLLAPSE UNDER GREATER APPLIED PRESSURE ASSOCIATED WITH PRINTING OR WRITING TO A SECOND COMPRESSED STATE TO YIELD MARKING LIQUID IN A PATTERN CONFORMING TO THE PRINTING OR MARKING PRESSURE PATTERN APPLIED.

Inventors

• 👤 George T Brown Jr
• 👤 Donald B Clark

Bibliographic Details