Method and apparatus for serializing printed circuit boards and

Details Method and apparatus for serializing printed circuit boards and Method and apparatus for serializing printed circuit boards and

1988-04-04

1989-08-01

Dees, Jose G.

Radiation imagery chemistry: process, composition, or product th

Imaging affecting physical property of radiation sensitive...

Making electrical device

430319, 430327, 430329, G03C 516

Patent

active

048533173

ABSTRACT:
A method and apparatus for providing serialization of printed circuit boards and flex circuits during the normal process of manufacture of the boards and circuits is disclosed and includes a print module which prints the serializing information on the surface of the photoresist material with a fluid, which blocks the passage of ultraviolet radiation, before the photoresist material is exposed to ultraviolet radiation through the photomask. If a negative-acting photoresist material is used, the serializing information is reverse printed on the surface of the negative-acting photoresist material. If a positive-acting photoresist material is used, the serializing information is printed on the surface of the positive-acting photoresist material.

REFERENCES:
patent: 4522903 (1985-06-01), Heiart et al.
patent: 4695527 (1987-09-01), Geissler et al.

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