MULTIPLE HEAT TRANSFER SHEET FOR GRADATION RECORDING AND PREPARATION THEREOF

摘要

PURPOSE:To increase the number of times in transfer and to subject the density of a transfer image to linearly stable gradation recording, by a method wherein particles controlling the transfer amount of an ink are bonded by a high m.p. binder and only the ink is limited little by little to carry out transferring. CONSTITUTION:A heat transfer sheet 10 is formed by bonding porous particles 11 to condenser paper 2 in a mutually bonded state by a high m.p. binder 12 not melted at the melting temp. of a low m.p. binder. Therefore, the porous particles 11 having action limiting the transfer amount of an ink 13 are different from a conventional one and are not transferred to plain paper 7 along with the ink 13 while, even if the number of times of transfer is increased, the degree of limitation thereby is not changed and the transfer amount of the ink 13 is held stably little by little. As the result, the number of times of transfer is increased and the roughness of an image is eliminated.