| 摘要 |
PROBLEM TO BE SOLVED: To solve the following problem: since the whole surface of an adhesion face of a presser foot plate is coarse in a conventional optical coupling part, coated optical fibers of an optical fiber tape in contact with the adhesion face of the presser foot plate are scratched, and the optical fibers are in danger of fracturing if scratched; if the optical fibers are subjected to stress, the scratches of the optical fibers expand further to easily cause breakage, especially, when two or more coated optical fibers of the optical fiber tape are lapped on a substrate, the above problem becomes remarkable. SOLUTION: One side of the presser foot plate is partly or wholly made coarse except a part faced to grooves. Further, the optical fibers of coated optical fiber tape are placed in the grooves. COPYRIGHT: (C)2007,JPO&INPIT
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