a plurality of {TAIL ~ racks} received within said central opening and slidably supported within said shaft and individually engageable with one of said gears whereby upon linear movement of {HEAD ~ said rack} said print wheels are rotated, 
a plurality of { TAIL ~ racks } received within said central opening and slidably supported within said shaft and individually engageable with one of said gears whereby upon linear movement of { HEAD ~ said rack } said print wheels are rotated ,
OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH