Method of forming an image transmitting guide

An image fiber which includes a number of cores arranged at random and covered with an integrated clad. A method of fabricating an image fiber base material collected with a number of optical fiber strands in longitudinally drawn and aligned state comprising the steps of assembling the optical fiber strands of more than two different diameters from each other. In this manner, this method can eliminate the drawbacks of the conventional image fiber by arranging cores at random and can reduce a moire produced in case of connecting to a TV camera, and does not produce dislocations or pinholes of core arrangement in the section of the image fiber since a number of cores of the image fiber are arranged at random and are covered with integrated clad.