PURPOSE: To mount an ink donor film inserted in a groove on a winding up roller easily with being clamped by providing a groove on an outside periphery of a winding up roller, and providing a clamping mechanism on the former such that it does not project from the outside periphry thereof.
CONSTITUTION: A depression section 22 having an arch shaped cross section is provided at one central section of the outside periphery of a winding up rolle 21, and a groove 23 extending axially and to the end surface of the roller 21 is provided on the opposite sides thereof. The rear end section of a clamp member 26 is pressed down against the force of a spring 28, a press down nail 27 is separated from a bottom surface of the depressed section 22, an ink donor film 1 is inserted into the groove 23, and the front end edge thereof is contacted to the innermost recess of the groove uniformly. The depression against the clamp member 26 is released, a center portion of the ink donor film end section is pressed down to the bottom surface of the depresed section 22 by the press down nail 27.
HORIKOSHI NORIKAZU
SEKIMOTO TAKASHI
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