SELF-PROPELLED CARRIAGE ASSEMBLY FOR PRINTERS AND THE LIKE

摘要

A self-propelled carriage assembly having moved back and forth (10) for a printer is slidable along a pair of carriage guide shafts (14, 15), one of which (15) is provided with an elongated rack (16). A light DC motor (M) of simple design is mounted on the carriage to rotate so as selective a pinion gear (52b) which engages with said rack. printer registration means are mounted directly on the carriage and comprise a Hall-effect device (42) for generating pulses by detecting patterns of magnetic flux developed by a rotary magnetic member (47) mechanically coupled to the output of the motor has a gear train. A mounting bracket of a printer head (60) is slidably mounted on the carriage through the intermediary of a device dovetail (61a, 61b, 22b, 22c) and cam means operable manually (98) provided on the carriage position the printer head of the mounting bracket relative to the carriage for adjusting the position of the nose of the print head (119) with respect to the printing plate (105). The connections to the printer head, the engine, and a Hall detector are performed with the assistance of a printed wiring flat hose (43). The engine direct drive eliminates the need for mounting belts, pulleys, clutches, and conventional ways of transmitting energy.