| 摘要 |
PURPOSE:To freely and remarkably improve processing capacity by disposing conveyors in upper and lower multiple stages. CONSTITUTION:Oil tanks 15-17 are formed three upper and lower stages corresponding to conveyors 11-13, in a room state, the conveyors 11-13 are disposed in a dipping type in contained electroless copper plating solution 3, and printed wiring boards P are conveyed from upstream sides 111-131 to downstream sides 112-132. The boards P are dipped in the solution 3 while being conveyed in parallel at the upper and lower positions by the conveyors, the inner walls of through holes are electrolessly copper plated, and front and rear circuits are connected. Thus, the processing capacity per unit time is remarkably improved. |
