PURPOSE: To avoid the vertical fluctuation of a transmitting original and extract the steady optical signal to obtain a high-quality picture, by securing an noncontacting reading structure between the transmitting original and the end surface of the optical fiber bundle.

CONSTITUTION: The optical fiber bundle 4 is buried into the contact fiber substrate 3 so that a coincidence is secured between the contact point P and the fringe of the receiving surface 4a of the bundle 4 and that the whole surface 4a is positioned within the same surface as the slope 3a of the substrate 3. As a result, the optical signals sent from a picture can be caught totally on the surface 4a immediately before a malformation of the original and to some vertical fluctuation of the original when the original is read. Thus the steady optical signals can be extracted.