Pressure-sensitive transfer elements and method of producing same

Claim 1

PRESSURE-SENSITIVE TRANSFER ELEMENTS FOR PRODUCING COPIES, COMPRISING SUPPORTS 20-80 MU IN THICKNESS HAVING ON THE SURFACE THEREOF DEPRESSIONS 10-60% OF THE THICKNESS OF SAID SUPPORT, AND SAID DEPRESSIONS BEING SPACED ABOUT 1-50 MU BY PROTRUSIONS OF SAID SUPPORT, PIGMENTS ENVELOPED IN 15-25% OF THE PIGMENT WEIGHT RESILIENT POLYVINYL POLYMERS DEPOSITED IN SAID DEPRESIONS OF SAID SUPPORT, THE SIZE OF SAID PIGMENTS BEING SMALLER THAN THE SAID DEPRESSIONS, SAID DRIED PIGMENT COATING BEING COVERED WITH A TRANSFER LAYER IN AMOUNT RANGING FROM 1 TO 5 GR./M.2 BUILT UP BY A GEL FORMED BY A NETWORK OF SOLID AGGREGATES OF ALIPHATIC CARBOXYL-CONTAINING HYDROCARBON COMPOUNDS CONTAINING 25-40 CARBON ATOMS, AND HAVING AN ACID NUMBER OF 10-160, A SAPONIFICATION NUMBER OF 100-108, AN UNSAPONIFIABLE PART OF 5-25%, AND A SOLVATED FLUID PHASE INCLUDED IN THE NETWORK-LIKE SOLID PHASE IN AN AMOUNT NOT EXCEEDING 10% BY WEIGHT OF SAID HYDROCARBON COMPOUNDS.