PURPOSE: To prevent blocking by forming a layer of specific hydrogen modified polysiloxane on the side whereon a quantity of heat is impressed.
CONSTITUTION: A layer of hydrogen modified polysiloxane expressed by general formulas (IWIII) is formed on the side of an ink sheet whereon a quantity of heat is impressed. The thickness of the layer is 0.02W1μm, or preferably 0.05W0.5μm. A uniform effect can not be expected when said thickness is smaller than 0.02μm, and the sensitivity of the ink sheet lowers undesirably when it is larger than 1μm. Although the ink sheet whereon the layer is formed is not limited particularly, the one prepared by a method wherein an ink layer prepared from paraffin wax or ester wax having a melting point of about 60W100°C and a coloring material and also from a softening agent and a filler as a thermal conductivity improving agent as occasion calls is provided about 2W20μm thick on a polyester film substrate of a melt transfer type being about 2W12μm thick, is used.
YAMADA SHINJI
WADA TATSUO
KOJIMA MAKOTO
