MODE OF ELECTRIC CHEMICAL MACHINING OF INFORMATIONAL ARTICLES Russian patent published in 2008 - IPC C25D5/02 H05K3/07 C25D5/56 C25F3/14 

FIELD: the invention refers to the field of machine building, radio electronic and instrument making and may be used at manufacturing of printed-circuit cards, dial-plates, indexes, textual, numeric and other informational articles (schemes, maps etc).

SUBSTANCE: the mode includes plotting of dielectric former on an article consisting of dielectric material with a metallic covering. At that on the unprotected plots of the metallic covering unprotected with the dielectric former at a minimal clearance between the dielectric former and a conducting material which is fed by sprinkling with an electrolyte they put a layer of metal of alternating thickness with the most thickness equal to the thickness of the dielectric former on its frontiers, then they change polarity on opposite, increase the clearance between the dielectric former and the conducting instrument to the upper limit, switch on the priming of the electrolyte and fulfill the removal of the metallic covering and the deposited layer on the plots unprotected with the dielectric former till stabilization of the current on the level near to zero.

EFFECT: the invention allows receiving the required informational scheme with conservation of the thickness of the metallic covering on the non-working plots and with complete removal of the metallic covering on the non-working plots of a half-finished product.

3 dwg, 1 ex