Oki ML5721 Ask Expert!

Wide carriage 9-pin dot matrix perfect for front desk printing in retail and service industries

  • Races through up to 7-part forms and lists at print speeds of up to 700 characters per second (cps) for faster transactions.
  • Money saving benefits with long life ribbons (13 million characters).
  • Low energy consumption in Sleep Mode.
  • On-board Microline, Epson and IBM compatibility for trouble free drop-in and print.
  • Four paper paths can handle forms, cut-sheet and continuous sheets.
  • Mean Time Between Failure (MTBF) figure of 25,000 hours.

The wide carriage ML5721eco is designed where fast printing, reliability and flexible paper handling is essential. With the ability to manage thick forms and heavy works, this dot matrix printer is perfect for demanding environments such as production, vehicle repair/service centres, warehouses, labs, wholesalers and freight forwarders. Whether you are printing invoices, picking lists, call log slips, tickets, receipts, forms or multi-part documents, the ML5721eco keeps your transactions smooth and your customers happy. 

Flexible, Eco-friendly and cost effective 
The ML5721eco has been developed with eco-friendly technology.  With power consumption of just 1.5w in sleep mode, your running costs and energy consumption are kept to a minimum, as well as reducing your carbon footprint.

More paper paths give you flexibility. The three tractor feeding paths handle multi-part forms and continuous paper from either the front, rear or bottom. The two friction feeding paths handle cut-sheets, cards and envelopes from either the front or top.

A selection of pull and push tractors allow permanent stationary loading, for use on demand and handle multi-part and continuous forms more efficiently.

Key specifications

  • Print speed:Super Speed Draft: 700cps (12cpi); High Speed Draft: 600cps (10/12/15/17.1/20cpi); Draft: 450cps (10/12/15/20cpi), 431cps (17.1cpi); Near Letter Quality: 113cps, Up to 108cps (17.1/20cpi)
  • Number of copies:Up to 1 original + 6

Full specifications

Printing Characteristics

  • No of pins:9
  • Columns:136 (10cpi); 272 (maximum in compression mode)
  • Character pitch:5/6/7.5/8.5/10/12/15/17.1/20 pitch and proportional
  • Print speed:Super Speed Draft: 700cps (12cpi); High Speed Draft: 600cps (10/12/15/17.1/20cpi); Draft: 450cps (10/12/15/20cpi), 431cps (17.1cpi); Near Letter Quality: 113cps, Up to 108cps (17.1/20cpi)
  • Built in barcodes:UPC-A, UPC-E, EAN8, EAN13, Code39, Interleaved 2of5, Code128 (A/B/C), CODABAR (NW-7), POSTNET, Industrial 2of5, Matrix 2of5

Interfaces and Emulations

  • Interface:IEEE 1284 parallel interface, USB 2.0 (full speed)
  • Optional interface(s):Ethernet 10/100, Serial RS232C
  • Emulation:Epson FX ESC/P, IBM PPR, ML
  • Typeface and Font:SSD, HSD, Draft, Courier (scalable), Gothic (scalable), OCR-B
  • Typestyle:Emphasised, Enhanced, Double Width, Double Height, Italics, Superscript, Subscript, Underline, Overscore
  • Printer driver:Windows 2000 / XP (32-bit & 64-bit) / Vista (32-bit & 64-bit) / 7 (32-bit & 64-bit) / Server 2003 (32-bit & 64-bit) / Server 2008 (32-bit & 64-bit) / Server 2008 R2 (64-bit)
  • Utilities:Status monitor, Button setup utility, Menu setup utility, TOF setup utility, Network setup utility, LPR utility

Paper Handling

  • Standard:Cut Sheet (single sheet), Continuous Paper (single-part, multi-part), Envelope, Card, Label (cut sheet and fan fold)
  • Continuous paper:Width: 76.2 - 406.4mm / Length: 76.2 - 558.8mm
  • First printable line (from top of page):Continuous: 2.12mm; Cut sheet: 0.5mm
  • Number of copies:Up to 1 original + 6
  • Multi-part paper thickness:Front/rear push feed: 0.36mm; Front/rear pull feed & front/rear push-pull feed: 0.44mm; Bottom pull feed: 0.48mm
  • Standard paper handling:Manual insertion: Front or rear in, top out; Push Tractor: Front or rear in, top out; Pull tractor: Front or rear or bottom in, top out
  • Optional paper handling:Single Bin Cut Sheet Feeder, Push Tractor (front/rear feeds), Pull Tractor (bottom feed)

General Features

  • Input buffer128Kbytes
  • Power supplySingle phase 220 to 240VAC, +/- 10%
  • Power consumption:ISO/IEC 10561 Letter, Draft, Range1: 52W; Sleep mode: 1.5W (no options attached)
  • Noise levelNormal: 57dB(A); Quiet: 55dB(A); Silent mode: 52dB(A)
  • Dimensions(HxWxD)191 x 592 x 375mm
  • Weight10kg approx


  • Print head life:400 million characters
  • Reliability:MTBF: 25,000 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

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