Described is a process for producing information relative to the type of a printer head (18) present in a printer, which head contains at least one printer element (86, 88, 90). The servo component of the printing element (86, 88, 90) has an electrical resistance, which is determined via an electrical...http://www.google.se/patents/US5033887?utm_source=gb-gplus-sharePatent US5033887 - Process for the production of information relative to the type of a printing head
