MARKING METHOD BY MASKING COLOR, MARKING METHOD BY REMOVING COLOR AND MARKING METHOD BY CHANGING COLOR

摘要

A method for more easily marking an optical recognition code is accomplished.;First, a red ribbon-shaped thread, a green ribbon-shaped thread and a blue ribbon-shaped thread are woven into a fabric mark object in three lines. Next, black embroidery patches are provided in predetermined regions of the ribbon-shaped threads by embroidering to partially cover and thus mask the ribbon-shaped threads. Through the above two steps, a color bit code is marked on the fabric mark object by exposing the colors of the portions wherein the black embroidery patches are not provided.