HEAT-SENSITIVE RECORDING PAPER

摘要

PROBLEM TO BE SOLVED: To provide a heat-sensitive recording paper of improved integrity with a revenue stamp or a postal stamp. SOLUTION: One revenue stamp or one postal stamp is stuck on a recording face of a heat-sensitive recording paper, and the heat-sensitive recording paper with its sticking section facing outside is so hung on an iron bar of 8 mm diameter as to set both faces of the same length, and a 500 g weight is set on a bottom side on one side, while the other side of the bottom side section is held by one hand, and when the reciprocating movement of drawing the section of sticking the revenue stamp or the postal stamp to the hand side so as to rub the surface of the section is carried out, the number of reciprocating movements required for releasing one-third or more of the sticking area of the revenue stamp or the postal stamp is 10 times or more.