Patent ID: 6066241
Filing Date: 2000-05-23
Classification: B08B,C23G,H01J

Abstract:
A continuous process for etching a side of a substrate (1) comprising a continuous metallic strip, the process comprisingmoving the substrate in a travelling direction between an anode (8), with respect to which the substrate is polarized negatively, and at least one magnetic circuit (2) disposed opposite the anode (8), the side to be etched being directed towards the anode (8), and,creating, in proximity of the side, a plasma (10) so as to generate radicals and/or ions acting on the side, andadjusting a width of a field of action of the magnetic circuit to a width of a zone of the substrate (1) which is to be etched, the width being adjusted transversely to the travelling direction (5) thereof by moving at least a portion of the magnetic circuit in a direction transverse to the travelling direction.