PURPOSE:To prevent a skew from occurrence by a method wherein a printing mechanism which presses image receiving paper on a platen clamping a tip of the image receiving paper with a presser roller, a highly gliding layer is provided to a surface of the platen and the presser roller is formed by an elastic material of a highly frictional coefficient. CONSTITUTION:The title printing mechanism clamps a tip of image receiving paper 6 onto a surface of a platen 1 with a clamper 5, presses the image receiving paper 6 onto a rubber layer 1 provided on a platen base 11 of the platen 1 with metallic presser rollers 2 to 4 to rotate the platen 1, and performs printing on the image receiving paper 6 with a thermal head 9 via an ink sheet 8. In this case, a highly gliding layer 13 is formed on a surface of the rubber layer 12 on the platen base 11. This highly lubricative layer 13 is formed by such materials of Teflon or the like that frictional force between the layer 13 and the image receiving paper 6 will be less than frictional force between the thermal head 9 and the ink sheet 8. Besides, the presser rollers 2 to 4 are composed of a rubber roller of a highly frictional coefficient to raise the frictional force between the presser rollers 2 to 4 and the image receiving paper 6.