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OKI B840dn A3 Mono LED Laser Printer

01308001  

OKI B840dn A3 Mono LED Laser Printer

Business Price £947.24
ex VAT @ 20%
£1,136.69
inc VAT
  • Key Features
  • Bundles & Compare
  • Overview
  • Detailed Spec
  • Cartridges & Accessories
  • Questions & Answers
  • Reviews
  • Toner Cartridge Costs
    1.4p per mono page
  • Protect Sensitive Data and Documents with Secure Print
  • Automatic Double Sided Printing
  • Up to 1,200 x 1,200 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 Multipurpose Tray
  • 128MB (640MB) RAM
  • Windows & Mac Compatible
  • OKI Mobile Printing
  • Print Job Accounting
ModelDouble Sided PrintingMemoryAdditional Paper TrayPrice ex Vat
OKI B840dnAutomatic128MB (640MB)-£947.24View
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?
  • OKI B840dn
  • Black Starter Toner Cartridge (6000 Pages)
  • AC Cable (UK)
  • Software CD/DVD (Software/Utilities/Drivers/User Manuals)
  • Setup Guide
View Brochure
Double Sided Printing Automatic Double Sided Printing
Printer Resolution Up to 1,200 x 1,200 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
Interface Type(s) USB, Network & Parallel
Network Interface 10/100 Base-TX Ethernet Network
USB Ports 1 x USB 2.0
Memory (Maximum) 128MB (640MB) RAM
Operating Systems Supported Windows & Mac Compatible
Paper Handling Input 1 530 Sheet Input Tray
Paper Handling Input 2 100 Sheet Multipurpose Tray
Maximum Paper Size A3
Maximum Paper Weight 200gsm
Paper Handling Standard Output 250 Sheets Face Down, 100 Sheets Face Up (80gsm)
Paper Size A3, A4, A5, B4, B5, A6; 10 Envelopes (Com-9, Com-10, DL, Monarch, C4, C5); Labels (A4), Custom size: Width 76-297mm Length 148-431.8mm;
Barcode 5031713050582
Monthly Duty Cycle Up to 100,000 Pages/Month
Recommended Max Print Volume Up to 20000 Pages/Month
Mono or Colour Printer Mono
Technology LED Laser Printer
Case Colour Classic Grey
Dimensions 485mm (W) x 521mm (D) x 373mm (H) - 28kg
Power Saving Modes Printing, Sleep, Energy Star compliant
Product Summary OKI B840dn A3 Mono LED Laser Printer
Product Type A3 Laser Printer
Voltage/ Power/ Frequency 220 to 240VAC / 50 to 60Hz
Carton Dimensions 700m (W) x 639mm (D) x 495mm (H) - 32.8kg
Printer Languages PCL5e, PostScript 3 (emulation), SIDM (IBM-PPR, EPSON-FX)
Font Capabilities PCL: 87 scalable PCL and 3 bitmap font; PostScript 3: 136 scalable
Security IPv6, 802.1x Authentication, SNMPv3, SSL/TLS HTTPS Encryption, Secure Print, Secure Erase, Data Encryption, MAC Filtering, IP Filtering, IPSec
In The Box OKI B840dn, Black Starter Toner Cartridge (6000 Pages), AC Cable (UK), Software CD/DVD (Software/Utilities/Drivers/User Manuals),Setup Guide
Black 6000 Pages
Warranty 3 Year On-Site Warranty (when product is registered within 30 days of purchase).

**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 Consumables

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

£280.37 ex VAT @ 20%

£336.45 inc vat

Buy
10 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
OKI 16GB Secure Digital Memory Card
01272701
OKI 256MB RAM Memory Upgrade
01182907
OKI 512MB RAM Memory Upgrade
01182908
OKI 2nd/3rd Paper Tray
44676103

OKI B840dn Warranties

DescriptionProduct CodePrice
Installation Service
09401395

£208.00 ex VAT @ 20%

£249.60 inc vat

Buy
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

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

£6.95 ex VAT @ 20%

£8.34 inc vat

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

£9.95 ex VAT @ 20%

£11.94 inc vat

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

£9.95 ex VAT @ 20%

£11.94 inc vat

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

£12.95 ex VAT @ 20%

£15.54 inc vat

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

£14.95 ex VAT @ 20%

£17.94 inc vat

Buy
99+ In Stock

Customer Question & Answers

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

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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.