The OKI Microline 421 9-pin, wide-carriage printer is engineered for dedicated forms printing in the most demanding point-of-sale, automation and utility environments. ML421 printers are right at home in applications such as retail sales counters, medical facilities, automotive rental and repair shops, airline counters, financial departments and manufacturing sites. TIts print speed and versatile paper handling make it ideal for the office, too. The ML421 sports features that give it a strong edge over their predecessors as well as the competition. Three piece top cover provides easy access and unsurpassed break resistance. An internal cooling fan provides continuous airflow for the printhead maximizing throughput productivity for long, unattended print jobs. Additional feed rollers provide precise forms handling and printed-character placement accuracy. The ML421 has a zero-tear feature that accurately positions continuous forms for a clean tear at the perforation, which eliminates wasted stock. You also get perfect results with single sheets, card stock, labels and envelopes as well without jams or smears. The OKI ML421 delivers the kind of productivity usually reserved for printers much higher in price. Starting with a super-fast print speed of 570 characters-per-second (in SuperSpeed Draft mode). Then there's the rugged printhead - with its 200-million character life, powerful samarium cobalt magnets and stored-energy pins - delivering precise, sharp characters all the way through to the last page of a 6-part form. The patented OKI closed-loop feedback system assures character placement accuracy.