SUPPORT FOR A TYPE BELT OF A LINE PRINTER

摘要

The continuous type belt (3) is arranged round two rollers (25), one of which is driven. One straight section of the type belt (3) contacts over its entire length the support designed as a platen (23). In order to avoid grooves on the platen (23) caused by the rotating type belt (3), and to achieve a distribution of other kinds of wear of the platen (23) over its circumference, a gear motor (27) causes the platen (23) to rotate very slowly (approximately 1 revolution in 72 hours). The platen (23) can also be rotated without gear motor. For this purpose, the longitudinal axis of the platen (23) is slightly inclined relative to the edge of the type belt (3). This inclination effects a small movement component in the direction of the platen circumference while the type belt (3) slides along the lateral surface of the platen (23), said component causing a slow revolution of the platen (23).