There's nothing like it in its class. The Microline 521 is measurably faster:
it prints faster in any mode, and feeds paper faster, too. And its print head is
designed to last twice as long as those of competitive dot matrix printers do.
It also has something you won't get with conventional 9-pin dot matrix printers:
patented OKISMART Paper Handling for hassle-free switching between different
paper types. No more guesswork. No more searching for the owner's manual. No
more paper jams or uneven print quality. Instead, the ML521 "reads and learns,
"automatically adjusting to the paper you feed it. You get perfect output on
single sheets, card stock, multi-part forms (up to six parts!) and labels.
What's more, envelopes print out flawlessly, with no jams or smears.
ML521 EPSON/IBM/ML PAR DOTPR 430CPS 9PIN WCAR
For more detailed information: http://www.okidata.com/mkt/html/nf/ML520Des.html