Method of providing a printed circuit board with a cover coat

Details Method of providing a printed circuit board with a cover coat Method of providing a printed circuit board with a cover coat

1991-11-22

1992-11-10

McCamish, Marion E.

Radiation imagery chemistry: process, composition, or product th

Imaging affecting physical property of radiation sensitive...

Making electrical device

430311, 430312, G03C 1112

Patent

active

051621940

ABSTRACT:
Method of providing a printed circuit board with a cover coat on a selected area thereof characterized by the steps of:

REFERENCES:
patent: 4889790 (1989-12-01), Roos et al.
IBM Technical Disclosure Bulletin, vol. 19, No. 12, May 1977, p., 4539 by Abolafia et al, "Dual Density Mask For Photoresist".
IBM (TDB) vol. 19, No. 12, May 1977, P. A. Hartley, Dual Density Mask for Photoresist (4540).
IBM (TDB) vol. 22, No. 3, Aug. 1979, Hampson, R. A., Miller, E. D., Journal Take-Up Roll for Printer Mechanism.

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