Apparatus for facsimile using a prism-shaped fiber optics

Claim 1

A read-in and read-out apparatus for a facsimile system, which comprises: a cathode ray tube having a prism-shaped fiber optics faceplate having a phosphorous layer on the inner surface thereof; feeding means for advancing an information medium closely adjacent to one of the slanting end faces of said prism-shaped fiber optics faceplate; read-out control means for controlling said cathode ray tube to produce an electron beam which scans an area of said phosphorous layer corresponding to the other of said slanting end faces so as to cause a flying-spot to appear in said layer and to be irradiated through the other end face on to said information medium; read-out means for picking up the flying spot reflected from said information medium and converting intensity variations of the flying spot into an electric signal having an instantaneous magnitude substantially proportional to the intensity of the flying spot; read-in control means for receiving an image signal bearing an image and for controlling said cathode ray tube to produce an electron beam which is intensity-modulated in accordance with said image signal and aligned to strike an area of the phosphorous layer corresponding to the one slanting end face so as to cause a flying spot having intensity proportional to that of said electron beam to emit from said one slanting end face and irradiate on said information medium; read-in means for processing the information medium irradiated with said flying spot; and switch means to selectively operate said read-out control and read-out means, and read-in control and read-in means.