METHOD FOR PRINTING PRINTED CIRCUIT BOARD

摘要

PURPOSE:To print a printed circuit board by an ink jet printer without fear of impairing the electric characteristics of the board. CONSTITUTION:A circuit protective film 2 in which inorganic ion exchange is mixed is provided on a surface of a printed circuit board 1. The surface of the film 2 is printed by an ink jet printer. Ions such as charge agent in ink of the printer are collected by the exchange mixed in the film 2 to prevent the ions in the ink from acting on a circuit 5.