Patent ID: 6179954
Filing Date: 2001-01-30
Classification: B05B,C23F,H05K

Abstract:
An apparatus for etching a printed circuit board, comprising:transporting means for horizontally transporting a printed circuit board in a transporting direction so that a height of said printed circuit board during etching is kept at a transport position;a plurality of upper spray nozzles for injecting an etchant to a top surface of said printed circuit board transported by said transport means;a plurality of lower spray nozzles for injecting an etchant to a bottom surface of said printed circuit board; anda plurality of ejecting passages for ejecting the etchant, injected to the top surface of the printed circuit board by the upper spray nozzles, away from the printed circuit board in transverse directions perpendicular to the transporting direction of the printed circuit board, wherein the ejecting passages are arranged at portions of the transport means in which no pressure rollers are provided at locations corresponding to the ejecting passages.