Single element typehead positioning mechanism

摘要

A non-homing positioning mechanism to effect type selective movements of a single element typehead by means of coordinate band systems wherein the coordinate band systems are cntrolled by a translator comprising a four armed cross-shaped member unidirectionally rotatable in 90 DEG steps. A set of radially spaced pins are arranged along opposing arms of the cross-shaped member, the sets being alternately selectively settable in response to successive character selections to cause selective band displacement incident to each 90 DEG rotation of said cross-member. One end of each band system is anchored and the other end is connected to position and hold the typehead to a selected character in accordance with the displacement thereof through selected pins on opposing arms of and incident to movement of the cross-shaped member.