OKI B840dn A3 Mono LED Laser Printer

01308001 

Special Offers click here for more info
  • Free 3 Year On-Site Warranty
  • 14 Day Trial - Call 0800 840 1992 to arrange

Business Price

£912.00 ex VAT @ 20%
£1,094.40inc VAT
Speak to our trained printer team today! 0800 840 1992 call us FREE Mon - Fri 8:30am - 6:00pm
14 Day Trial
Call to arrange
0800 840 1992
Key Features
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Key Features

  • Toner Cartridge Costs
    1.2p per mono page
  • Protect Sensitive Data and Documents with Secure Print
  • 14 Day Trial - Call 0800 840 1992 to arrange
  • Automatic Double Sided Printing
  • 1200 x 1200 dpi Print
  • USB, Network & Parallel
  • As fast as 5 Seconds First page
  • Up to 40ppm Mono Print
  • PCL5e, PostScript 3 (emulation), SIDM (IBM-PPR, EPSON-FX)
  • 530 Sheet Input Tray
  • 100 Sheet Multi-Purpose Tray
  • 128MB (640MB) RAM
  • Windows & Mac Compatible
Compare the Range
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Compare the Range

ModelDouble Sided PrintingMemoryAdditional Paper TrayPrice ex Vat
OKI B840dnAutomatic128MB (640MB)-View£912.00
OKI B840dtnAutomatic128MB (640MB)530 Sheet paper trayView£1123.58
OKI B840dtn Wireless BundleAutomatic128MB (640MB)530 Sheet paper trayView£1138.25

Select a bundle today and save £££s

Bundle What's included Price
OKI B840dn + Black Toner (20,000 Pages) + OKI B840dn + Black Toner (20,000 Pages)
OKI B840dn + Black Toner (20,000 Pages)

Bundle Price £1,146.27 ex VAT@20%

£1,375.52 inc VAT

You save £16.65

Product Overview

Product Overview

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OKI B840dn in More Detail

Transform your black and white documents with the B840, the A3 printer with the speed, versatility and footprint of an A4 device. With sharp mono output, provided by OKI’s innovative digital LED technology, the B840 brings A4 and A3 mono printing closer to your small to medium workgroup.

Fast and Flexible

The B840 is designed to offer low running costs with a low total cost of ownership that puts A3 printing in the reach of businesses and workgroups in every sector. What’s more, it comes with a three-year warranty at no extra cost, so you can absolutely rely on it.


Combining the speed of an A4 printer with the flexibility of A3 output, the B840 delivers superior mono print quality in a compact machine that will sit on any desktop, bringing versatile printing right to the heart of a workgroup. The B840 comes network ready with PCL/PostScript built-in for maximum platform flexibility and application support.


Able to handle a wide range of media and paper weights of up to 200gsm, the B840 is ideal for reducing costs through printing items such as business cards, labels and other business documents in-house. In addition, the B840dn and B840dtn models offer duplex printing as standard for reduced running costs and to save paper.

Secure and Reliable

Putting you in control, the software utilities and features provide even more value for your money. Secure Print3 removes the risk of sensitive information falling into the wrong hands. PrintSuperVision provides remote monitoring and management of printers across your network and Print Control allows you to control your print costs and usage.


The B840 is built on tried and tested digital LED technology, developed by OKI for over 20 years. The robust design and innovative technology not only delivers outstanding reliability, but also the 100k duty cycle offers you consistently high quality prints over and over again.

What's in the Box?
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What's in the Box?

  • OKI B840 printer
  • AC Cable (UK)
  • CD/DVD (including Software/ Utilities/ Drivers and User Manuals)
  • Setup Guide
  • Starter Toner= 6000 pages
Detailed Specification
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Detailed Specification

  Print
Double Sided Printing Automatic Double Sided Printing
Printer Resolution 1200 x 1200 dpi Print
First Page As fast as 5 Seconds First page
Product Group Output A3
Speed Monochrome Up to 40ppm Mono Print
Speed Monochrome (A3) Up to 22ppm

**Page yields are declared by the manufacturer in accordance with ISO/IEC standards or occasionally estimated based on 5% per page coverage. Yields will vary greatly depending on image, area coverage, print mode and environmental conditions.

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  • Free 3 Year On-Site Warranty
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£912.00 ex VAT @ 20%
£1,094.40 inc VAT

FREE Next Day Delivery*

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Cartridges & Accessories
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OKI B840dn Consumables

DescriptionProduct CodePrice
Genuine OKI Print Cartridge (20,000 Pages)
44661802

£250.92 ex VAT @ 20%

£301.10 inc vat

11 In Stock

**Page yields are declared by the manufacturer in accordance with ISO/IEC standards or occasionally estimated based on 5% per page coverage. Yields will vary greatly depending on image, area coverage, print mode and environmental conditions.

OKI B840dn Accessories

DescriptionProduct CodePrice
TP-Link AV600 Nano Powerline Adapter Kit
TL-PA4010KIT V1.20

£25.48 ex VAT @ 20%

£30.58 inc vat

99+ In Stock
OKI 16GB Secure Digital Memory Card
01272701

£95.00 ex VAT @ 20%

£114.00 inc vat

256MB RAM Memory Upgrade
01182907

£145.00 ex VAT @ 20%

£174.00 inc vat

512MB RAM Memory Upgrade
01182908

£240.00 ex VAT @ 20%

£288.00 inc vat

1 In Stock
2nd/3rd Paper Tray
44676103

£245.00 ex VAT @ 20%

£294.00 inc vat

OKI B840dn Warranties

DescriptionProduct CodePrice
Installation Service
09401395

£208.00 ex VAT @ 20%

£249.60 inc vat

1 In Stock

OKI B840dn Cables

DescriptionProduct CodePrice
USB 2.0 Cable (1.8 Metre)
usbcable

£4.95 ex VAT @ 20%

£5.94 inc vat

99+ In Stock
USB 2.0 Cable (3 metre)
usbcable3m

£6.95 ex VAT @ 20%

£8.34 inc vat

99+ In Stock
Standard Ethernet Cable (3 Metre)
networkcable

£9.95 ex VAT @ 20%

£11.94 inc vat

99+ In Stock
USB 2.0 Cable (5 Metre)
usbcable5m

£9.95 ex VAT @ 20%

£11.94 inc vat

99+ In Stock
Standard Ethernet Cable (5 Metre)
networkcable5m

£12.95 ex VAT @ 20%

£15.54 inc vat

99+ In Stock
Standard Ethernet Cable (10 Metre)
networkcable10m

£14.95 ex VAT @ 20%

£17.94 inc vat

99+ In Stock
Questions & Answers
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Customer Question & Answers

Can't find the answer you're looking for? Our printer experts are here to help!
Ask a Question
would like to know does this type of printer can print any size smaller than A3? such as : 15*10cm 、30*10cm 、23*31cm

Yes, along with A3 media the OKI B840dn also supports the following media sizes: A4, A5, B4, B5, A6, Envelopes (Com-9, Com-10, DL, Monarch, C4, C5), Labels (A4), and custom sizes (Width 76-297mm by Length 148-431.8mm). 15 x 10 and 30 x 10 media sizes would be slightly too small as the minimum length would need to be above 148mm, but it would be able to handle 23 x 31cm.

Customer Reviews
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Customer Reviews

Not yet reviewed

Additional Product Features

Print Job AccountingOKI Mobile Printing
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OKI Print Job Accounting

OKI® Print Job Accounting software enables you to securely monitor your print fleet so you can charge back departments, bill back clients, and control the cost of colour prints.

See Exactly Who is Printing What

This optional application for OKI colour, mono and multifunction printers helps to give you a clear overview of of print activity by tracking the output of each individual user or department.

Assign cost values to documents including full colour and duplex (double sided) jobs to allow you to use information gathered to charge back departments or clients.

Easily capture full details surrounding:

  • Colour Vs Black & White pages
  • Number of printed pages
  • Page size
  • Media types
  • Paper trays used
  • Document name
  • Total time spent by job/person/department

Perfect for Multi-Device Owners

Print Job Accounting is designed for use by small or large business alike with multiple print sources with support for up to 50 devices for the standard version or even 1,000 printers when you upgrade to the enterprise version.

Total Access Control

Keep control over your workgroup's print output by defining who can print and what gets printed. Restrict users to black & white printing or allow access to full colour HD prints.

Assign access levels by username, application, file name, PC/server name or website URL. All policies are password protected and added security is provided by restricting authentication through the system manager.

Speak to an OKI specialist at Printerland on 0800 840 1992 for more information

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OKI & Mobile Printing
With the modern mobile workforce increasing at a rapid rate, and the growing popularity of tablets, smartphones and laptops, printing documents where and when you need them adds a whole new meaning to print on demand providing you have access to a compatible device.

Thanks to the many mobile applications available, you no longer have to be ‘back in the office’ to print and share documents essential to your business, customers or partners; promotional customer information, contracts - you can keep your business going whilst you are on the move.

Printing from Apple iPad or iPhone?
How to print to an OKI Printer from an Apple iPad

How does mobile printing work?

Cloud or mobile printing works by connecting to a wireless, networked or web enabled printer through a smartphone device or tablet, meaning you can print remotely from anywhere in the world, without having to connect directly to a printer nearby.

OKI products & Mobile Printing

OKI Colour, mono and multifunction printers are compatible with a number of applications available, so you can download an application of your choice that enables you to print to almost any device simply through a single mobile printing application.

Microtech Corp’s ePrint and Cortado Workplace, for example, are compatible with most printer manufacturer brands including OKI’s portfolio of mono and colour LED printers and MFPs.

Microtech Corp's website  - compatible with iOS and Android devices*

Cortado's website - compatible with iOS, Blackberry, Android and Symbian devices*


*please note: a PC or Apple Mac on the same wireless network may be required for full compatibility.

*Page yields are declared by the manufacturer in accordance with ISO/IEC standards or occasionally estimated based on 5% per page coverage. Yields will vary greatly depending on image, area coverage, print mode and environmental conditions.

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Price applicable to business customers and those eligible to recover VAT.

VAT is payable at a rate of 20%

This calculation is based on current pricing which is subject to change over time and excludes the cost of additional long life components such as drums, fusers or other maintenance items.

*Page yields are declared by the manufacturer in accordance with ISO/IEC standards or occasionally estimated based on 5% coverage. Yield will vary greatly depending on image, area coverage, print mode and environmental conditions.

*Page yields are declared by the manufacturer in accordance with ISO/IEC standards or occasionally estimated based on 5% per page coverage. Yields will vary greatly depending on image, area coverage, print mode and environmental conditions.