THE CIRCUIT FOR DRIVING HEAD PIN IN DOT-MATRIX PRINTER

摘要

The head pin driving circuit adjusts the print pulse width and the print timing to produce high print quality. The circuit comprises a head power drive circuit (10) for generating head power driving signal according to head power control signal transmitted from a microcomputer, a head power supply (20) for providing power to a head, a pulse width adjuster (30) for adjusting pulse width of th head power control signal, a timing controller (40) for applying head pin driving control power on time, a print signal interface unit (50) for generating head pin drive signals according to the head pin driving control power, and a head pin driver (60) for driving head pin according to the head driving power.