Coating processes – Electrical product produced – Welding electrode
Patent
1987-12-03
1989-08-01
Lusignan, Michael
Coating processes
Electrical product produced
Welding electrode
106 121, 204 384, 427 98, 4271265, 4274431, B05D 306, B05D 512, C25D 502
Patent
active
048532525
ABSTRACT:
A method and coating material for applying electrically conductive printed patterns to insulating substrates is provided. The coating material includes a non-metallic, grainy carrier substance having metal of the oxidation degree 0 applied thereto. An energy radiation source, particularly of a deflectable laser beam, is used to secure anchoring of the carrier substance to the substrate in the region of the desired printed pattern. As a consequence of a three-dimensional arrangement of the metal, a three-dimensional nuclei distribution is produced that leads to a reliable and fast metallization of the printed pattern on the basis of chemical metal deposition. The method of the invention is especially suited for laser pattern transfer for the manufacture of printed circuit boards.
REFERENCES:
patent: 3674515 (1922-07-01), Kelemen
patent: 4486463 (1984-12-01), Rubner et al.
patent: 4574095 (1986-03-01), Baum et al.
patent: 4716059 (1987-12-01), Kim
German Periodical Galvanotechnik 77 (1986), No. 1, pp. 51-60.
IBM Technical Disclosure Bulletin, vol. 15, No. 5, Feb. 1973, p. 2855.
Boone Luc
De Vogelaere Marc
Frankel Juergen
Mattelin Antoon
Pecceu Pol
Lusignan Michael
Michael Huber GmbH
Siemens Aktiengesellschaft
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