Thermo-wax transfer sheets

Claim 1

A PROCESS OF PRODUCING A COPY FOR USE AS A SPIRIT TYPE DUPLICATING SHEET FROM AN ASSEMBLAGE OF SHEETS INCLUDING AN ORIGINAL SHEET BEARING THEREON INFRARED ABSORBING, HEAT-GENERATING IMAGE AREAS, A MASTER SHEET, ONE SIDE OF WHICH CONSTITUTES THE SURFACE UPON WHICH THE COPY IS TO BE MADE, AND A MATERIAL SUPPLY SHEET CARRYING ON ONE SURFACE THEREOF A COATING OF SPIRIT DUPLICATING TYPE TRANSFER MATERIAL WHICH MAY BE RENDERED PLASTIC ABOVE A PREDETERMINED TEMPERATURE BY IRRADIATIANG SAID ASSEMBLAGE WITH A SOURCE OF INFRA-RED RADIATION SUFFICIENT TO RAISE THE TEMPERATURE OF THE COATING IN THE AREAS CORRESPONDING TO SAID IMAGE AREAS AT LEAST TO SAID PREDETERMINED TEMPERATURE, BUT BELOW THE MELTING POINT OF SAID COMPOSITION: THE IMPROVEMENT COMPRISING USING AS SAID TRANSFER MATERIAL A COMPOSITION CONSISTING ESSENTIALLY OF A WAX AND OIL MIXTURE AND A DYE, WHEREIN SAID WAX AND OIL MIXTURE IS IN THE APPROXIMATE PROPORTION, BY WEIGHT: PERCENT CARNAUBA 50$15 MINERAL OIL 30$15 CASTOR OIL AND LANOLIN 20$15SP@ AND WHEREIN SAID DYE IS ESSENTIALLY CRYSTAL VIOLET INCLUDED IN AN AMOUNT SO AS TO CONSTITUTE 50%$10% BY WEIGHT OF THE TOTAL COMPOSITION, SAID COMPOSITION BEING CHARACTERIZED AS FLOWABLE AT ATMOSPHERIC PRESSURE AT A TEMPERATURE IN THE RANGE OF FROM 140*F. TO 145*F. AND PLASTIC TO A STATE OF ADHERENCE WITH SAID SURFACE MADE CONTIGUOUS THEREWITH BY PRESSURES IN EXCESS OF THREE POUNDS PER SQUARE INCH AND AT A TEMPERATURE IN THE RANGE FROM 120*F. TO 140*F.