OKI Microline 5791eco A4 Mono Dot Matrix Printer


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5 / 5 (1  reviews)

"OKI ML5791eco

We bought the OKI ML5791 to replace and ancient Genicom line printer. The OKI was so easy to install and configure and i..."

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Key Features
Back Key Features
  • USB & Parallel
  • 360 x 360 dpi Print
  • Front feed tractor for continuous forms
  • Parts: 6 (original + 5 copies)
  • width: 136 characters (10cpi), 272 characters (compressed mode)
  • 540cps Draft
  • 576cps Fast Draft
  • 240cps Best
Special Offer
  • Free 3 Year On-Site Warranty
  • Free 8GB Memory Stick

Business Price £447.16 ex VAT @ 20%
£536.59 inc VAT
5 In Stock
FREE Next Day Delivery*
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for Free Delivery tomorrow 22nd November
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OKI Microline 5791eco
Business Price £447.16 ex VAT @ 20%
£536.59 inc VAT
  • Product Overview
  • Cartridges & Accessories
  • Questions & Answers
  • Reviews (1)
Product Overview

OKI Microline 5791eco in More Detail

The ultra reliable, wide carriage ML5791eco dot matrix printers deliver fast, high quality printing of multi-part forms, truly versatile paper handling and low running costs.

Fast and productive

Their high 576 characters per second (cps) print speeds, fast throughput and ability to manage heavy medias make them perfect for high duty applications where presentation and print quality are essential. And with multiple emulations, replacing slow or failed printers is simple and straightforward.

Ideal for printing customer facing documents such as receipts, invoices, dispatch notes and spreadsheets, on single or multipart paper, the ML57901eco will keep productivity levels high and document presentation professional.

A versatile machine

The ML57901eco printer, can feed both cut sheet paper and continuous forms with ease. Front, top, bottom and rear paper input paths and an on-board tractor feed unit that can be front or rear mounted provide truly versatile paper handling.

Optional push and pull tractor feed units are available to allow the loading of two different media types simultaneously or the feeding of heavier papers and labels. A Roll Paper Stand option is available for the ML5791eco for economical printing of passenger lists, call logs, data logs and more.

Low running costs

A long life 24-pin print head delivers superb quality documents on single or multi-part paper printing up to 6 copies simultaneously.

OKI’s genuine long-life printer ribbons can produce up to 13 million characters before needing a replacement which keeps running costs to a minimum.

What's in the Box?

What's in the Box?

  • ML5791eco 24-Pin Dot Matrix Printer
  • AC Cable (UK)
  • CD (including Drivers and User Manuals)
  • Setup Guide
  • Consumable Ribbon
Detailed Specification

Detailed Specification


Product Group Output A4
Printer Standard Resolution 360 x 360 dpi Print
Print Width width: 136 characters (10cpi), 272 characters (compressed mode)
Speed Draft 540cps Draft
Speed Fast Draft 576cps Fast Draft
Speed Near Letter Quality 240cps Best


Number of Copies Parts: 6 (original + 5 copies)


Interface Type(s) USB & Parallel
Parallel Ports 1 x Parallel Port Parallel Port
USB Ports 1 x USB

Media Handling

Paper Handling Input 1 Front feed tractor for continuous forms
Paper Handling Features Cut Sheet (single sheet), Continuous Paper (single-part, multi-part), Envelope, Card, Label (cut sheet and fan fold)
Paper Size 76.2 to 558.8mm (length) 76.2 - 406.4mm (width)

Barcodes & Labels

Barcode 5031713050018
Built in Bar Codes UPC-A, UPC-E, EAN8, EAN13, Code39, Interleaved 2of5, Code128 (A/B/C), CODABAR (NW-7), POSTNET, Industrial 2of5, Matrix 2of5


Mono or Colour Printer Mono
Technology Dot Matrix Printer
Dimensions 59.2cm (W) x 37.5cm (D) x 19.1cm (H) - Weight 10kg
Noise Level 57dbA
Product Summary OKI Microline 5791eco A4 Mono Dot Matrix Printer
Product Type Dot Matrix Printer
Voltage/ Power/ Frequency 220 - 240VAC

Consumable Info

Print Head Life 400,000,000 Characters
Ribbon Life 8,000,000 Characters


Emulations Epson LQ ESC/P2, IBM PPR, IBM AGM
Font Capabilities HSD, Draft, Courier (scalable), Roman (scalable), Swiss (scalable), Swiss Bold, Orator, Gothic, Prestige, OCR-A, OCR-B

In the Box

In The Box ML5791eco 24-Pin Dot Matrix Printer, AC Cable (UK), CD (including Drivers and User Manuals), Setup Guide, Consumable Ribbon


Warranty 3 year On-Site Warranty (when product is registered within 30 days of purchase).

More Features

Character Pitch 5/6/7.5/8.5/10/12/15/17.1/20 pitch and proportional
Input Buffer 128KB
MTBF 25,000 Hours

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Questions & Answers

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Customer Reviews

Overall Customer Rating

5 / 5
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  • Richard Oldershaw 21 September 2016 5 / 5 Value 5 Features 5 Quality 5 Performance 5 OKI ML5791eco

    We bought the OKI ML5791 to replace and ancient Genicom line printer. The OKI was so easy to install and configure and is much easier to use than the old printer. The OKI is as fast as the old printer and has a much better print quality. All in all an excellent purchase.

All print speeds, running cost calculations and consumable life cycles are MANUFACTURER ESTIMATES based on 5% per page coverage. Images are used for illustration purposes only

Running Costs

-All consumable life cycles are manufacturer estimates based on 5% coverage per A4 page

*Estimation based on toner/ink cartridges only and excludes long life components such as image drums and fusers.

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