Okidata ML320


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Okidata 320 Printers are rugged, reliable industrial printers for dedicated applications

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Okidata 320 Printer Performance

Tank Tough reliability and expanded head gap for dedicated forms printing

This 9-pin dot matrix printer is blazing new trails in productivity. Engineered for dedicated printing in the most demanding point-of-sale, automation and utility applications, the ML320/321 can easily run twice as long as most printers in its class! It can simplify any job on virtually any stock, and it's economical enough to put wherever you need data on the spot.

The ML320/321 puts the "work" in workstations for financial departments, wholesale or retail sales counters, even for warehouse or manufacturing environments.

Set it up with a box of forms - even 6-part invoices! - and let it run and run and run.

Its relentless performance comes from the rugged printhead design that keeps your print images sharp for a 200-million character life. A lighter, stronger, more efficient motor reduces friction, heat build-up and wear. The long-lasting rack and pinion drive system ensures print quality longer than belt or cable systems. Plus, an impact-resistant chassis protects the entire mechanism, even in the harshest environments.

When it comes to endurance, dependability and efficiency, the ML320/321 sets a new standard.

Unmatched paper-handling capability

Specifically designed to offer enhanced paper-handling capabilities, the ML320/321 can be set with an expanded gap between printhead and platen, accommodating multi-part forms and stock that are up to twice as thick as those that fit our nearest competitor. A bottom feed feature* keeps the paper path short and straight when running stiff card stock or labels.

The ML320/321 printhead has a lightweight samarium cobalt magnet and powerful, spring-activated pins to deliver a stronger punch - right to the last page of a 6-part form!

For precisely formed output, a patented optical sensor accurately positions the printhead on the page, first time and every time. And the auto-tear feature accurately positions continuous forms for a clean tear at the perforation - eliminating wasted forms.

This reliable, flexible 9-pin dot matrix printer can meet your needs today and in the future, because it's the perfect replacement for the ML320/321. It's exactly the same size, built to stand up to harsh factory conditions, and is compatible with virtually all custom and "off-the-shelf" software.

The ML320/321 A lot of tank-tough performance for dedicated forms printing.

* Requires optional push tractor
Detailed Specifications: Side-by-Side Comparison

Print Speed And Quality
Super Speed
Draft (cps)**
High Speed Draft (cps)390390390390390
Utility Speed (cps)300300300300300
Near Letter Quality Speed (cps)7575757575
Letter Quality Speed (cps)N/AN/AN/AN/AN/A
Number Of Colors11111
Maximum Graphics Resolution (dpi)240 x 216240 x 216240 x 216240 x 216240 x 216
Fonts and Bar Codes
Resident Scalable FontsYesYesYesYesYes
Resident Bar Code FontsYes (8 Types*)Yes (8 Types*)Yes (8 Types*)Yes (8 Types*)Yes (8 Types*)
Paper Handling
No. Of
Automatic Paper Forms LoadingYesYesYesYesYes
Short Tear OffYesYesYesYesYes
Zero Tear OffYesYesYesYesYes
Rear FeedYesYesYesYesYes
Bottom Feedw/Pull or Bott. Trac.w/Pull or Bott. Trac.w/Pull or Bott. Trac.w/Pull or Bott. Trac.w/Pull or Bott. Trac.
Pin Feed PlatenN/AN/AN/AN/AN/A
Top Pull TractorsOptionalOptionalOptionalOptionalOptional
Push TractorsRear / (Opt. Bott.)Rear / (Opt. Bott.)Rear / (Opt. Bott.)Rear / (Opt. Bott.)Rear / (Opt. Bott.)
Paper Feed Rate (inch per second)55555
Cut Sheet Feeder OptionN/AN/AN/AN/AN/A
Roll Paper Stand OptionYesYesnonoYes
Parallel InterfaceStandardStandardStandardStandardStandard
Serial InterfaceOptionalOptionalOptionalOptionalStandard
Number of Pins99999
Autogapping PrintheadN/AN/AN/AN/AN/A
Expanded Head GapYesYesYesYesYes
Printhead Life (characters)200 million200 million200 million200 million200 million
Memory Buffer Size128K128K128K128K128K
MTBF (hours)
Monthly Workload (pages)20,00020,00013,00013,00020,000
Operating / Physical Specifications
Noise Level In Operating Mode (dBA)5757575757
Noise Level In Quiet Mode (dBA)5555555555
Ribbon Life (characters)3 million3 million3 million3 million3 million
Power Voltage120v or 220v120v or 220v120v or 220v120v or 220v120v or 220v
EPA Energy Star ComplianceYesYesYesYesYes
Dimensions Of Narrow Carriage w/out Box
(W x D x H) (inches)
15.7 x 13.6 x 4.615.7 x 13.6 x 4.6N/AN/A15.7 x 13.6 x 4.6
Dimensions Of Wide Carriage w/out Box
(W x D x H) (inches)
N/AN/A21.7 x 13.6 x 4.621.7 x 13.6 x 4.6N/A
Weight Of Narrow Carriage w/out Box (lb.)15.415.4N/AN/A15.4
Weight Of Wide Carriage w/out Box (lb.)N/AN/A20.920.9N/A
Additional Features
Front Panel Direct Access ControlsYesYesYesYesYes
Front Panel Limited Function ModeYesYesYesYesYes
Toll Free Telephone Support (hours/days)24 / 724 / 724 / 724 / 724 / 7
EmulationsEpson FX, IBM PPR III, (DEC) ANSI x 3.642 and OKI MICROLINE
OS CompatibilityWindows XP, 2000, 98/95, 3.x and NT 4.0; MS-DOS; Novell - NDS, NDPS, NLSP; IPX/SPX protocol; UNIX; HP JetAdmin, Web JetAdmin compatible