Oki Microline Ml3321eco 9-pin Dot Matrix Printer

QuickFind: 654729 Mfr part code: 01308303
  • OKI Microline ML3321eco 9-pin Dot Matrix Printer
  • 136 Column
  • 240x216dpi Print resolution
  • USB/Parallel
  • (Epson FX IBM ProPrinter OKI MicroLine Emulation)

Product Description

Oki Microline Ml3321eco 9-pin Dot Matrix Printer

Reliable, fast and environmentally friendly 9-pin printer that deliver superb value for money
  • 9-pin, 136 column dot matrix printer
  • Up to 435 characters per second (cps) print speed
  • Eco-friendly technology, sleep mode consumes just 1.5W
  • OKI Microline, IBM and Epson emulations
  • Multi-part paper-handling (original + 4 copies)
  • USB and Parallel interfaces with RS232 and Network options

High speed, energy efficient and reliable

A great all-rounder the 80 column ML3321eco dot matrix printer is suited to a wide range of high speed data listing and multi-part forms applications, where fast throughput and flexible paper management are required. 

Engineered to work in the most demanding of environments this tough desktop printer has provided over 10 years of dependable service to business.  Now enhanced with the latest power management technology power consumption is reduced to just 1.5W in "Sleep mode" to deliver significant energy savings over the products long life.

Media and application friendly

The ML3321eco printer can handle cut sheets, continuous feed paper and multi-part forms.  Perfect for printing receipts, invoices, picking lists, reports and spread sheets working across a wide range of retail and production environments.   Its robust 9-pin print head can produce up to 5 copies simultaneously for highly efficient document production. 

Top, bottom and rear paper input paths and a built-in rear push tractor feed unit provide flexibility.  Optional bottom push and top pull tractor units are available to allow the loading of two different media types simultaneously or the feeding of heavier papers and labels.

Eco-friendly and cost effective

The ML3321co printer has been developed to be eco-friendly.  OKI's SoC (System on Chip) technology reduces power consumption to an impressively low 1.5W in "Sleep mode" keeping your running costs and energy consumption 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.  With almost half a century of experience in the impact printer industry, you are guaranteed a best-in-class performance and great value for money products. And, for total peace of mind, just register your printer and take advantage of our extended three year on-site warranty at no extra cost.

Technical Specification

Oki Microline Ml3321eco 9-pin Dot Matrix Printer


Fonts Included 1 x scalable ¦ 1 x barcode
Max Resolution ( B&W ) 240 x 216 dpi
Print Speed Up to 435 char/sec - super speed draft - 12 cpi ¦ Up to 387 char/sec - high speed draft - 12 cpi ¦ Up to 387 char/sec - high speed draft - 10 cpi ¦ Up to 290 char/sec - utility - 12 cpi ¦ Up to 290 char/sec - utility - 10 cpi ¦ Up to 73 char/sec - near letter - 12 cpi ¦ Up to 73 char/sec - near letter - 10 cpi
Connectivity Technology Wired
Interface Parallel, USB
Max Resolution (B&W) 240 x 216 dpi
Language Simulation EPSON FX, Okidata Microline, IBM ProPrinter
Barcodes OCR-B


RAM Installed ( Max ) 128 KB
RAM Installed (Max) 128 KB

Expansion / Connectivity

Connections 1 x parallel - 36 PIN Centronics ¦ 1 x USB - 4 pin USB Type B

Manufacturer Warranty

Service & Support Limited warranty - 3 years
Service & Support Details Limited warranty - 3 years

Environmental Parameters

Sound Emission (Operating) 57 dBA
Sound Emission (Quiet Mode) 52 dBA

Dimensions & Weight

Width 55.2 cm
Depth 34.5 cm
Height 11.6 cm
Weight 7.6 kg


Printer Type Workgroup printer - dot-matrix - 9 pin - monochrome

Media Handling

Media Path Type Curved
Media Type Envelopes, labels, plain paper, continuous forms
Max Media Size A3 (297 x 420 mm), continuous paper 76 mm - 406 mm (width)
Min Media Size (Custom) 76 mm
Max Media Size (Custom) 406 mm
Media Sizes Continuous paper 76 mm - 406 mm (width)
Envelope Sizes Com-10 (105 x 241 mm)
Media Feeders 1 x manual - 1 sheet - continuous paper 76 mm - 406 mm (width)
Max Sheets in Multi-Part Form 5


Consumables Included 1 x printhead - up to 200 million characters
MTBF 10,000 hour(s)


Power Device Power supply - internal
Voltage Required AC 230V
Frequency Required 50/60 Hz
Power Consumption Operational 27.5 Watt
Power Consumption Sleep 1.5 Watt

Environmental Standards


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Oki Microline Ml3321eco 9-pin Dot Matrix Printer

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