Thermographic transfer sheet having a support of a paper and plastic coating and the method of use

Claim 2

A TRANSFER SHEET FOR THERMOGRAPHIC COPYING IN WHICH THE TRANSFER SHEET SERVES AS A TENSIONING BELT AND IS EXPOSED TO THE DIRECT RADIATION OF A SOURCE OF RADIATION, SAID TRANSFER SHEET COMPRISING: A PAPER BASE, A CLEAR PLASTIC COATING ON SAID BASE, AND A HEAT MELTABLE COATING ON SAID PLASTIC HAVING A MELTING POINT SUBSTANTIALLY LOWER THAN THE MELTING POINT OF SAID PLASTIC COATING.

Claim 3

A TRANSFER AND COPY SHEET COMBINATION FOR USE IN A THERMOGRAPHIC COPYING PROCESS IN WHICH THE TRANSFER SHEET SERVES AS A TENSIONING MEMBER, SAID COMBINATION INCLUDING A HEAT MELTABLE COATING ON SAID TRANSFER SHEET, A MINERAL COATING ON SAID COPY SHEET, SAID COATING ON SAID TRANSFER SHEET FACING TOWARD SAID COPY SHEET, AND SAID COATING ON SAID COPY SHEET FACING AWAY FROM SAID TRANSFER SHEET.

Claim 4

A TRANSFER AND COPY SHEET COMBINATION FOR USE IN A THERMOGRAPHIC COPYING PROCESS IN WHICH THE TRANSFER SHEET SERVES AS A TENSIONING MEMBER, SAID COMBINATION INCLUDING A HEAT MELTABLE COATING ON SAID TRANSFER SHEET, A MINERAL COATING ON SAID COPY SHEET, SAID COATING ON SAID TRANSFER SHEET FACING TOWARD SAID COPY SHEET, AND SAID COATING ON SAID COPY SHEET FACING AWAY FROM SAID TRANSFER SHEET.

Claim 5

IN THE PROCESS OF IMAGING A COPY SHEET COMPRISING THE STEPS OF SUPERPOSING ORIGINAL INFRARED RADIATIONABSORBING IMAGES TOGETHER WITH A COPY SHEET AND A TRANSFER SHEET HAVING A HEAT-TRANSFERABLE IMAGING LAYER, THE IMAGING LAYER BEING IN INTIMATE SURFACE CONTACT WITH THE SURFACE OF THE COPY SHEET, AND APPLYING THERETO INFRARED RADIATIONS WHICH ARE ABSORBED BY THE ORIGINAL IMAGES AND CONVERTED TO HEAT PATTERNS IN THE SHAPES OF SAID IMAGES, THEREBY HEATING CORRESPONDING PORTIONS OF THE IMAGING LAYER AND CAUSING THEM TO MELT AND TRASFER TO THE COPY SHEET IN AREAS CORRESPONDING TO THE LOCATIONS AND SHAPES OF THE ORIGINAL IMAGES, THE IMPROVEMENTWHICH COMPRISES USING AS THE TRANSFER SHEET ONE WHICH IS FREE OF MATERIALS THAT ABSORB SUFFICIENT AMOUNTS OF INFRARED RADIATION ON INSTATANEOUS EXPOSURE THERETO TO CAUSE TRANSFER OF THE IMAGING LAYER AND IS COMPRISED OF A THIN PAPER FOUNDATION HAVING ON ONE SURFACE THEREOF A NON-MELTING, NON-TRANSFERABLE PLASTIC INTERMEDIATE LAYER AND A TOP HEAT-TRANSFERABLE IMAGING LAYER BASED UPON WAX BINDER MATERIAL, SAID TRANSFER SHEET BEING HEAT RESISTANT AND DIMENSIONALLY STABLE AT THE MELTING TEMPERATURE OF THE SAID IMAGING LAYER WHEREBY THE PORTIONS OF THE IMAGING LAYER THAT ARE TRANSFERRED TO THE COPY SHEET FORM CLEAR AND UNIFORM IMAGES.

Claim 6

IN THE PROCESS OF IMAGING A COPY SHEET COMPRISING THE STEPS OF SUPERPOSING ORIGINAL INFRARED RADIATIONABSORBING IMAGES TOGETHER WITH A COPY SHEET AND A TRANSFER SHEET HAVING A HEAT-TRANSFERABLE IMAGING LAYER, THE IMAGING LAYER BEING IN INTIMATE SURFACE CONTACT WITH THE SURFACE OF THE COPY SHEET, AND APPLYING THERETO INFRARED RADIATIONS WHICH ARE ABSORBED BY THE ORIGINAL IMAGES AND CONVERTED TO HEAT PATTERNS IN THE SHAPES OF SAID IMAGES, THEREBY HEATING CORRESPONDING PORTIONS OF THE IMAGING LAYER AND CAUSING THEM TO MELT AND TRASFER TO THE COPY SHEET IN AREAS CORRESPONDING TO THE LOCATIONS AND SHAPES OF THE ORIGINAL IMAGES, THE IMPROVEMENTWHICH COMPRISES USING AS THE TRANSFER SHEET ONE WHICH IS FREE OF MATERIALS THAT ABSORB SUFFICIENT AMOUNTS OF INFRARED RADIATION ON INSTATANEOUS EXPOSURE THERETO TO CAUSE TRANSFER OF THE IMAGING LAYER AND IS COMPRISED OF A THIN PAPER FOUNDATION HAVING ON ONE SURFACE THEREOF A NON-MELTING, NON-TRANSFERABLE PLASTIC INTERMEDIATE LAYER AND A TOP HEAT-TRANSFERABLE IMAGING LAYER BASED UPON WAX BINDER MATERIAL, SAID TRANSFER SHEET BEING HEAT RESISTANT AND DIMENSIONALLY STABLE AT THE MELTING TEMPERATURE OF THE SAID IMAGING LAYER WHEREBY THE PORTIONS OF THE IMAGING LAYER THAT ARE TRANSFERRED TO THE COPY SHEET FORM CLEAR AND UNIFORM IMAGES.