| 摘要 |
<p>PURPOSE:To obtain a printing device small in size and low in cost with a simple constitution, by bringing a thermosensitive film capable of transmitting light by heating, into contact with a photoreceptor, forming a light transmitting image with a thermal head, and forming a latent image on the photoreceptor by light projection. CONSTITUTION:A belt-shaped thermosensitive sheet 18 transmitting no light at normal temp., but capable of transmitting light when heated, and returning to the initial state when cooled is arranged along a photosensitive drum 1, and a thermal head 22, a light source 23, etc. are disposed at prescribed positions. The traveling sheet 18 is heated selectively with the head 22 in accordance with electric signals to form transparent parts 18a, and they are successively formed to obtain a transparent image. The surface of the drum 1 is exposed to light emitted from the source 23 through this transparent image to form a latent image, and it is developed with a toner, thus permitting formation of an inexpensive printing device having a simple constitution.</p> |
