Electrolytic graining

Details Electrolytic graining Electrolytic graining

1984-08-06

1985-10-08

Valentine, Donald R.

Chemistry: electrical and wave energy

Processes and products

Electrostatic field or electrical discharge

20412943, 204DIG9, C25F 304

Patent

active

045458758

ABSTRACT:
The invention features an electrolytic process for producing lithographic plates. The plates are immersed in a bath and fed a shaped alternating wave having a multiplicity of zero voltage intermissions. The grain topography of the plate can be varied by changing the frequency and duration of the intermissions in the wave.

REFERENCES:
patent: 4087341 (1978-05-01), Takahashi et al.
patent: 4294672 (1981-10-01), Ohba et al.
patent: 4297184 (1981-10-01), Dyer
patent: 4315806 (1982-02-01), Arora
patent: 4455200 (1984-06-01), Okamoto
patent: 4468295 (1984-08-01), Pliefke

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