| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for cleaning a printed wiring board by which the quality and productivity of the board can be improved by efficiently removing residual photosensitive solder resist on the electrode terminals of the printed wiring board. SOLUTION: In the method for cleaning the printed wiring board, with respect to a horizontal conveyer system for developing the photosensitive solder resist ink on the printed wiring board, an ultrasonic vibrator (6) is immersed in a cleaning bath (4) placed at the cleaning stage after the development. Cleaning water is sprayed from a spray tube (7) between the ultrasonic vibrator (6) and a substrate (12) for the printed wiring board. The sprayed cleaning water is sucked and filtered through a suction tube (8) and is circulated for cleaning. COPYRIGHT: (C)2004,JPO
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