To prevent the degradation in color saturation and to suppress anti- dazzle of printed images, when printing images by using a liquid crystal display.

The images are displayed on the liquid crystal display 28, and the images displayed on the liquid crystal display device are reduced and formed on a photosensitive material, such as photographic paper, by an optical system. At this time, the entire liquid crystal display is vibrated with rotational motion of a microradius, by rotating plural eccentric cams in synchronization using a timing belt and therefore the liquid crystal display device may be circularly moved at a uniform amplitude, even in any pixel positions. As a result, the images formed on the photosensitive material may moved circularly evenly at the microradius and the net-like fine lines by the partition parts of the liquid crystal display device are embedded by the images and are made difficult to see, by which color saturation is improved and the gritty feel of the printed images by the spacings between liquid crystal cells is prevented.