PURPOSE: To make a device compact and improve the quality of developing by forming a heating body of a heat roller and a thermal head, and providing a developing means for transferring an image pattern latent in recording material onto image receiving paper by heating from the heating body to perform developing/fixing.

CONSTITUTION: When a feed roller 18a-1 and a heat roller, which is a heating body 18b-1, are rotated synchronously, recording material 13 and image receiving paper 15 are heated uniformly, and an image pattern latent in the recording material 13 is transferred at constant density onto the image receiving paper 15 side and also developed/fixed thereon. The recording material 13 and the image receiving paper 15 are then heated at the desired places by a thermal head, the heating body 18b-2, so as to partially emphasize the developing of the image pattern. Printing-recording can be thereby performed only by a photographic and heat sensitizing system. The quality of developing is also improved, as well as compactness and lightness are attained.