PURPOSE: To reduce the weight of a device and to protect an optical shutter from mechanical shock generated due to the reciprocation of a head by constituting an exposing head with an optical tube array.
CONSTITUTION: An image formation element 2 is assembled to the front surface of an optical fiber tube array 1 obtained by forming the leading ends of plural optical fiber tubes like a line or a matrix to constitute an exposing head. The optical fiber tubes projected from a cable coupling 4 are joined with respective dots of the optical shutter 5 in accordance with the constitutional dots of the optical fiber tube array and light beams radiated from a light source 7 are uniformly distributed into respective dots of the optical shutter array.
MISONO SHIGEMI
MIYOSHI TAISUKE
