Patent ID: 8724946

Claim:
A method of manufacturing an optical fiber tape core wire, comprising: a printing step of causing a plurality of optical fiber wires to run, each optical fiber wire including a resin coating layer of resin coating a silica glass fiber, and using a printer provided in a middle of a path of running, to print a marking for identifying the optical fiber tape core wire on a part of each of the plurality of optical fiber wires in the longitudinal direction; a colored layer formation step of using a coloring device provided in downstream of the printer in a fiber running direction to form translucent colored layers of different colors on the respective optical fiber wires with the markings printed in the printing step; a colored layer curing step of using a colored layer curing device provided in downstream of the coloring device in the fiber running direction to cure the colored layer; a tape forming layer formation step of using a tape forming device provided in downstream of the colored layer curing device in the fiber running direction to coat the plurality of optical fiber wires with colorless transparent resin collectively into a tape and form a tape forming layer; a tape forming layer curing step of using a tape forming layer curing device provided in downstream of the tape forming device in the fiber running direction to cure the tape forming layer; and a fiber running length adjustment step of using fiber running length adjustment devices adjusting the running lengths of the plurality of optical fiber wires running from the respective printers to the tape forming device to adjust the running lengths of all the optical fiber wires between the respective printers and tape forming device to a same length.