PURPOSE: To provide a thermal multiple copy sheet characterized in that the whiteness of the thermal recording surface of a first recording sheet becoming upper paper is high and good in printing capacity and preservability.
CONSTITUTION: A thermal multiple copy sheet is constituted of a combination of a first. recording,sheet 4 wherein a thermal recording layer 2 containing a basic dye and an electron acceptive coupler with a mol.wt. of 240 or more allowing the basic dye to develop a color by thermal reaction is provided on one surface of a base material sheet 1 and a heat-meltable layer 3 containing a basic dye and a heat-meltable substance is provided on the other surface thereof and a second recording sheet 7 wherein a thermal recording layer 6 containing a coupler allowing the basic dye in the heat-meltable layer 3 to develop a color by thermal reaction is provided on one surface of a base material sheet 5.
FUJII NOBUYUKI
SASAKI KEIJI
