MELT TYPE THERMAL TRANSFER PRINTER AND PRINTING PAPER THEREFOR

摘要

PROBLEM TO BE SOLVED: To obtain a multi-gradation image of extremely high resolution and image quality by using a meltable ink and a printing paper made of plain paper. SOLUTION: In a melt type thermal transfer printer constituted so that an ink ribbon 3 is brought into close contact with a recording medium 2 to be pressed by a thermal head and the supply quantity of a current to the thermal head 4 is controlled to control the melting area of ink 3a and a multi-gradation image is obtained on the recording medium 2, the recording medium 2 is set to a surface porous medium wherein a plurality of porous layers having a pore size not exceeding 25μm are superposed on a base sheet 2a. By this constitution, high density multi-gradation image printing achieved by a porous layer having a small pore size can be achieved by superposing a plurality of porous layers having a large pore size.