Exposing device and image magnification adjusting method

摘要

An exposing device including an optical fiber array with a plurality of optical fibers disposed at a predetermined interval, a first lens, and a second lens. The optical fiber array is mounted on a base seat supported on a rail movably along an optical axis direction. The first lens is mounted in a casing. The casing is mounted on a base seat supported on a rail movably along the optical axis direction. The second lens is mounted in a casing, and the casing is supported by a supporting member mounted on a base seat. In the case of changing imaging magnification, a moving amount of the optical fiber array and a moving amount of the first lens corresponding to the imaging magnification provided for the changing operation are each set so as to be moved.