METHOD FOR DIRECTLY WRITING PRINTED BOARD

摘要

PROBLEM TO BE SOLVED: To provide a direct writing method in which even a printed board having through holes can deal with a direct writing method of data from a computer extremely conveniently under a bright room and production efficiency is enhanced furthermore. SOLUTION: A printed board having through holes is laminated with a dry film and a resist image is formed according to data from a computer by ink jet system employing thermally fusible ink and then an alkaline soluble layer and a conductive layer are etched sequentially.