A cover film for a sublimation transfer type hard copy of the present invention is a cover film which is melt bonded by heat on the surface of a hard copy printing paper in which a picture image is formed on the surface thereof by selectively transferring a sublimation dye. The cover film includes a resinous layer containing a metal compound selected from Al, Mg, Ca and Sn. This cover film is capable of producing magenta color of high color saturation by arbitrarily controlling the coloring of reddish dye to be shifted to the blue side and can also protect the surface of the printing paper.Furthermore, the present invention relates to a cover film which is melt bonded by heat on the surface of a hard copy printing paper in which a picture image is formed on the surface thereof by selectively transferring a sublimation dye. This cover film includes a layer mainly formed of a phosphor whitener and a resin to increase a whiteness degree of a portion which is not colored so that a picture image is made clear and which can prevent the color of dye from being faded.