US Patent 9505229 Apparatus for forming images

To prevent reduction in printing quality, a printer includes an image formation section having a thermal head with a plurality of heating elements and transporting an ink ribbon and a transfer film at the same velocity to form an image on the transfer film, and a control section controlling the image formation section. The control section controls the image formation section to form a printing image on the transfer film according to input printing information and form a dummy image wider than the printing image on the width-direction opposite sides at the back thereof in the transport direction. On the ink ribbon, a wrinkle, which occurs in the rear end corner portion in the transport direction of a printing region corresponding to the printing image, is stopped by a sag caused by that the ink is removed in a dummy printing region Rd corresponding to the dummy image.