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Versatile, reliable narrow carriage forms printer, with 24-pin printhead, for improved print quality

  • 24-pin, 80 column dot-matrix printer
  • Up to 390 characters per second (cps) print speed
  • Eco-friendly, with power consuption in sleep mode at just 1.5W
  • Capable of printing up to 1 orginal and 4 copies
  • 2 million character ribbon life

Productive and reliable
The ML3390eco narrow carriage printer features advanced specifications that ensure excellent productivity and reliability every time. The robustness and flexibility make this the ideal choice for demanding environments.

Versatile printer with flexible media handling
The ML3390eco is so versatile, whether your requirements are for a long print run or a single letterhead, an envelope or a spreadsheet, in the office or on a counter, this impact printer can handle it.

For fast and precise dedicated forms printing, with pin feed or cut sheet stock, the ML3390eco is proven to be up to 30% faster than their closest competitor.

Eco-friendly and cost effective
The ML3390eco has been developed to be eco-friendly. With power consumption at just 1.5W in sleep mode, your running costs and energy consumption are kept to a minimum, as well as reducing your carbon footprint.

OKI?s commitment to customers
The OKI brand is one of proven reliability and value. We provide printers that increase our customers? long-term business performance without impacting their budget.

With almost half a century of experience in the impact printer industry, with OKI you are guaranteed a best-in-class, low cost, reliable and easy to use printer. And, for total peace of mind just register your product and take advantage of our extended three-year warranty at no extra cost.


Key specifications

  • Print speed:Fastest Print Speed: 390; Utility: 312 (12cpi), 260 (10cpi); Letter Quality: 104 (12cpi), 87 (10cpi)
  • Number of copies:Up to 1 original + 4 copies

Full specifications

Printing Characteristics

  • No of pins:24
  • Columns:80 (10cpi); 160 (maximum in compression mode)
  • Character pitch:10/12/15/17.1/20 pitch and proportional
  • Graphic resolution:Up to 360 x 360dpi
  • Print speed:Fastest Print Speed: 390; Utility: 312 (12cpi), 260 (10cpi); Letter Quality: 104 (12cpi), 87 (10cpi)

Interfaces and Emulations

  • Interface:Centronics parallel interface, USB 2.0
  • Optional interface(s):Serial RS 232C, OKILAN 7120e3 Network Card
  • Emulation:Epson LQ ESC/P2, IBM PPR, IBM AGM
  • Typeface and Font:Utility, Courier (scalable), Roman (scalable), Swiss (scalable), Swiss Bold, Prestige, Gothic, Orator, Barcodes, OCR-A, OCR-B
  • Typestyle:Emphasised, Enhanced, Double Width, Double Height, Italics, Outline, Shadow, Bold, Superscript, Subscript, Underline

Paper Handling

  • Continuous paper:76 - 254mm
  • Continuous envelopes:165 x 92mm
  • First printable line (from top of page):Continuous (multi-parts): 0.5mm; Cut sheet (single sheet): 0.5mm
  • Number of copies:Up to 1 original + 4 copies
  • Standard paper handling:Paper parking, Low tear-off, Autoload single sheet, Push tractors, Bottom feed
  • Optional paper handling:Pull tractor, Single bin cut-sheet feeder, Roll paper stand, Bottom push tractor

General Features

  • Input buffer128Kbytes
  • Power supplySingle phase 220 to 240VAC, +/- 10%, frequency 50/60Hz
  • Power consumption:ISO/IEC 10561 Letter, Draft, Range1: 30.4W; Sleep mode (no options attached): <1.5W
  • Noise level57dB(A); 52dB(A) (quiet mode)
  • Dimensions(HxWxD)116 x 398 x 345mm
  • Weight5.8kg approx


  • Print head life:200 million characters
  • Reliability:MTBF: 10,000 hours

Other Specifications

  • Warranty:3 years extended warranty upon registration within 30 days of purchase

  • This product complies with EN55022 Class B. However when fitted with the optional network interface card or optional cut sheet feeder, compliance to EN55022 is Class A. In a domestic environment this configuration may cause radio interference, in which case the user may be required to take adequate control measures.