Production of colour printing roller - by coating roller body with wear resistant layer made of substance that can be etched

摘要

Colour printing roller is produced by coating a roller body (5) with a wear resistant layer (4) made of a substance that can be etched and another substance (3) which is mainly if not fully resistant to etching. The coating is then etched to produce recesses (8) by selectively etching away the substance (2).