A carriage motor control device that uses speed determination means (3) for determining a set speed value (SN12) to be set on the basis of an aimed angle value (SN13A) indicative of an aimed rotation angle, an aimed speed value (SN13B) indicative of an aimed rotation speed and the rotation angle value,...http://www.google.ca/patents/US5433541?utm_source=gb-gplus-sharePatent US5433541 - Control device for controlling movement of a printing head carriage and control method for controlling the same