Method and apparatus for surface processing of printed...

Details Method and apparatus for surface processing of printed... Method and apparatus for surface processing of printed...

2005-04-12

2005-04-12

Hassanzadeh, P. (Department: 1763)

Etching a substrate: processes

Forming or treating electrical conductor article

C029S840000, C427S097100

Reexamination Certificate

active

06878296

ABSTRACT:
A printed wiring board having a conductor pattern on which a pre-flux film of a stabilized quality is to be formed using a water-soluble pre-flux liquid. To this end, such an apparatus is used which includes an etching unit12for etching lands5b, 6bformed on the printed wiring board1, a rinsing unit13for rinsing the printed wiring board1, a bubble removing unit14for removing air bubbles58attached to the printed wiring board1on immersing the printed wiring board1in a water-soluble pre-flux liquid9ain a processing vessel56, a pre-flux forming unit15for forming a pre-flux film9on the lands5b, 6bof the printed wiring board1in the pre-flux liquid9ausing an in-liquid spraying unit61, a liquid removing unit16for removing the pre-flux liquid9afrom the printed wiring board1transported from the processing vessel56and a rinsing unit17for rinsing the printed wiring board1.

REFERENCES:
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patent: 5127571 (1992-07-01), Gutierrez et al.
patent: 401117389 (1989-05-01), None

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