A motor drive device is disclosed having an input-side gear through which rotation of a stepping motor is transferred to a reel with a predetermined speed reduction ratio, the reel driven by the stepping motor via the input-side gear and is formed in one-piece construction with the input-side gear, and...http://www.google.co.uk/patents/US20050104288?utm_source=gb-gplus-sharePatent US20050104288 - Motor drive device
