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Home > Products > Lexmark > Monochrome Printers > W850N

Serious Printing Performance
Reach your true productivity potential with Lexmark's most powerful monochrome laser printer. You'll get powerful 800MHz processing and 256MB of RAM standard, with print speeds up to 50 ppm and the first page out as fast as 6 seconds, plus fast Gigabit Ethernet.

Exceptionally Versatile
From start to finish, designed to handle your toughest tasks―from hard-to-print media to paper sizes up to A3/11x17 (tabloid). Optional accessories let you easily expand your input capacity up to 5,100 sheets or add finishing touches with stapling, hole punch and offset stacking.

Ups Uptime
Combines reliable high-speed printing with must-have features like Job Waiting to keep the print queue flowing and Direct Web printing for on demand printing of online documents. Plus a solutions-ready framework for tapping into serious business apps that can help you save paper, cut waste, lower costs and enhance document security. See Related Links to learn more.

Cutting-Edge Security
From network security to user-access restrictions, you’ll be fully equipped to keep valuable data safe and sound. In addition to IPSec, SNMPv3 and 802.1x network security, the Lexmark W850n offers an alphanumeric pad for easy PIN authentication, plus encryption and disk wiping to secure the optional hard disk.

An Easy Operator
Easy operation, including a four-line display that provides intuitive visuals to guide users. Plus a convenient front-side Direct USB for printing PDFs and other image file types directly from portable memory devices.

Prints Black. Thinks Green
Designed with eco-conscious features like Eco-Mode to help you save energy and Quiet Mode for ultra-quiet operation. Recycle your empty cartridges free of charge through the Lexmark Cartridge Collection Program (see Related Link to learn more).

Printable Area (metric)

4 mm of the top, bottom, right and left edges


Printer Languages (Standard)

PCL 5e Emulation

PCL 6 Emulation

Personal Printer Data Stream (PPDS)

PostScript 3 Emulation


PDF 1.6 emulation

Direct Image

Microsoft XPS (XML Paper Specification)

Supplies Yield1

35,000-page High Yield Toner Cartridge

Photoconductor estimated yield

Up to 60,000 pages, based on 6 average letter/A4-

size pages per print job4

Packaged Size (mm - H x W D)

620 x 800 x 770 mm

Packaged Weight, kg

55 kg

Size (mm - H x W x D)

508 x 641 x 520 mm


45.6 kg



Product Warranty

1-Year Onsite Service, Next Business Day

Product Certifications

CSA, ICES Class A, BSMI Class A, VCCI Class A,

FCC Class A, UL 60950 3rd Edition, IEC 320-1, CE

Class A, CB IEC 60950, IEC 60825-1, GS (TÜV),

SEMKO, UL AR, CS, TÜV Rh, N Mark, C-tick Class

A CCC Class A

Maximum Monthly Duty Cycle

Up to 300000 pages per month

Recommended Monthly Page Volume

15000 - 59000 pages3

Paper Input Capacity, Standard

Up to 1100 pages 75 gsm bond

Paper Input Capacity, Maximum

Up to 5100 pages 75 gsm bond

Paper Output Capacity, Standard

Up to 500 pages 75 gsm bond

Paper Output Capacity, Maximum

Up to 3800 pages 75 gsm bond

Paper Weight Range Supported -

Standard Tray (gsm) 64-216 gsm



Finishing Option


Number of Paper Inputs, Standard


Number of Paper Inputs, Maximum


Media Sizes Supported

Card Stock, Envelopes, Paper Labels, Plain Paper

Transparencies, Refer to the Card Stock &

Label Guide.

Media Sizes Supported

10 Envelope, 7 3/4 Envelope, A3, A4, A5, C5 Envelope

DL Envelope, Executive, Folio, JIS-B4, JIS-B5

Ledger, Legal, Letter, Statement, Universal

Standard Ports

One Internal Card Slot

Gigabit Ethernet (10/100/1000)

Hi-Speed USB port Compatible with USB 2.0

Specification (Type B)

Front Hi-Speed USB port Compatible with USB 2.0

Specification (Type A)

Rear Hi-Speed USB port Compatible with USB 2.0

Specification (Type A)

Optional Network Ports

Internal RS-232C serial

Internal 1284-B Bidirectional Parallel

Direct USB


Ethernet Network


Part Number


Print Technology

Monochrome Laser

Workgroup Size

Departmental Workgroup


4-line 160 x 64 pixel All Points Addressable (APA)

backlit gray-scale display

Print Speed (A4, Black)

Up to 50 ppm

Print Speed (A4, Black) Duplex

Up to 50 spm

Time to First Page (Black)

As fast as 6 seconds

Duplex (2-sided) Printing

Duplex Unit Available

Print Resolution, Black

1200 x 1200 dpi

2400 Image Quality

600 x 600 dpi


800 MHz

Memory, Standard

256 MB

Memory, Maximum

1280 MB

Hard Disk

Option available

Paper Handling Standard

500-Sheet Output Bin

Two 500-Sheet Trays

100-Sheet Multipurpose Feeder

Paper Handling Optional

Duplex Unit

2,000-Sheet High Capacity Feeder

2,000-Sheet Dual Input

2 x 500-Sheet Drawer

3,500-Sheet Finisher

Product Specifications