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It’s designed for commanding performance in
demanding environments.
The OKI
®
MICROLINE
®
420 9-pin printer and its
wide-carriage counterpart ML421 are a quantum leap
forward in Impact printer performance.
Engineered for dedicated forms printing in the most
demanding point-of-sale, automation and utility
environments, ML420/421 printers are right at home
in applications such as retail sales counters, medical
facilities, automotive rental and repair shops, airline
boarding gates, financial departments and manufac-
turing sites. Their print speed and versatile paper
handling make them ideal for the office, too.
Performance is built in. The ML420/421 sport
features that give them a strong edge over their
predecessors as well as the competition:
• 3-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
Highlights:
Rated at 20,000 hours MTBF
3-Year standard warranty
Print speeds up to 570 cps
1
Integrated USB and IEEE Parallel connectivity
standard
Optional OkiLAN
®
6120i 10/100 Base-T Ethernet
®
internal print server
Crisp,clear printing on 6-part forms
Expandable head gap – accommodates multi-
part forms and cut-sheet stock including labels
and stiff index stock
128 KB receive buffer/memory
7.5 million-character ribbon life
200-million character printhead life
Small footprint – ideal for retail countertops
Uses the same accessories as
ML320/321 Turbo Series
1
SuperSpeed Draft Mode.
Reliable,
fast
and
easy to use.
Exceptional paper-handling versatility. The
ML420/421 have 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, index stock,
labels and envelopes, too.All without jams or smears.
Value that goes the distance. The OKI ML420/421
deliver the kind of productivity usually reserved for
printers many times the 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.And the patented OKI
closed-loop feedback system that assures character
placement accuracy.
The OKI ML420/421: Just turn ‘em on and
turn ‘em loose.
This rugged dedicated forms printer
is backed by a 3-Year standard warranty.
Narrow carriage
MICROLINE 420
OKI
®
MICROLINE
®
420/421
9-Pin Impact Printers