Process for the manufacture of a perforated nickel frame by elec

Details Process for the manufacture of a perforated nickel frame by elec Process for the manufacture of a perforated nickel frame by elec

1989-05-01

1990-04-03

Tufariello, T. M.

Chemistry: electrical and wave energy

Processes and products

C25D 108

Patent

active

049137832

ABSTRACT:
The present invention relates to the production by electroforming of perforated frames used especially to form flat or cylindrical printing frames. According to the invention, the procedure is in two stages, with two separate electrochemical baths, the second bath comprising a pyridinium compound of general formula: ##STR1## in which: R is an optionally substituted alkyl chain,

REFERENCES:
patent: 2226384 (1940-12-01), Norris
patent: 4397715 (1983-08-01), Mohan et al.
patent: 4430170 (1984-02-01), Stern
patent: 4430171 (1984-02-01), Lemke et al.

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