A method for making a lithographic printing plate support

摘要

A method for making a lithographic printing plate support including the steps of:
- providing an aluminum support;
- graining said support in a graining electrolyte solution;
- treating the grained support in a desmut electrolyte solution containing hydrochloric acid by applying a direct current resulting in a charge density Q; characterized in that the desmut electrolyte solution has a pH < 1 and that Q is at least 400 C/dm 2 .