Color contrast is created on anodized aluminum, e.g. to form inscriptions, logos or patterns on automobile or consumer product trim, by electromagnetic radiation energy input without surface removal

摘要

Color contrast creation on anodized aluminum, by electromagnetic radiation energy input into the anodized surface (12) without surface removal, is new. Preferred Features: The electromagnetic radiation (15) is focused laser light directed onto an anodized surface before and/or after coloring and sealing.