Etching apparatus for forming microcircuit patterns on a printed circuit board
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United States of America Patent
Stats
-
Dec 8, 1992
Grant Date -
N/A
app pub date -
Jul 22, 1991
filing date -
Feb 10, 1989
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An etching apparatus for forming circuit patterns on a printed circuit board comprises a conveyor for conveying printed circuit boards, a solvent pump for pumping etching solution, nozzles for spraying etching liquid or water on the printed circuit board, and a rinsing device for rinsing the surface of the printed circuit board. The discharge pressure of the pump for the etching solvent is preferably in the range 5.about.10 kg/cm.sup.2 and the distance between the nozzles and the printed circuit board is 50.about.200 mm.
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