Full-featured, energy-efficient monochrome
printers for mid-size workgroups
OKI and
The Environment
ENERGY STAR® Compliant Superior energy efficiency
Toner Save Mode Reduces amount of consumables used
Duplex (2-sided) Printing Saves energy and resources
LED Technology Long printhead life; energy efficiency
Low Power Consumption Takes less energy to operate
Enhanced performance, ease of use and security features make the
B721dn/B731dn perfect for productivity-minded companies.
• B731dn print speed up to 55 ppm;
B721dn up to 49 ppm1
• First page prints in as little as 5 seconds1
• Duplex (2-sided) printing standard
• Standard high-speed USB and 1 Gigabit
Ethernet connectivity
• 256 MB RAM standard, upgrades to 768 MB2
• Powerful 800 MHz processor
• 630-sheet standard paper input expands to
3,160 sheets with options
• 100-sheet multi-purpose tray
• Easy-to-read backlit control panel with
easy-to-use alphanumeric keypad
• USB host port for walk-up printing
• Rock-solid performance: B731dn monthly
duty cycle up to 280,000 pages; B721dn up to
250,000 pages
• High-quality 1200 x 1200 dpi resolution
for crisp, clear output
• Fewer interventions, single-piece print
cartridge up to 36,000-page capacity3
• Options include 2nd, 3rd and 4th 530-sheet
paper trays, 2,000-sheet Large Capacity
Feeder, and 160 GB hard disk drive
• 1-Year On-Site warranty 4
• Live, toll-free technical support 24/7/3654
The B721dn and B731dn printers from OKI are
designed to enhance productivity in demanding
environments. These digital monochrome printers
can deliver powerful, cost-effective performance,
providing crisp, clear documents with high speed
and low levels of user intervention. They’re a
powerful, reliable solution for your workgroup
printing needs.
LCD display and alphanumeric keypad – These
printers are extremely user friendly. A 5-line,
blue backlit graphical display and alphanumeric
keypad make menu settings and navigation a
snap. Messages on the display are easy to read.
Administrators can use the printer’s keypad to
control user access, and end users can enter
PIN numbers to release secure print jobs.
Feature-rich and up to any task – Perfect for
high-volume applications, both printers have
high monthly duty cycles. If your business
requires lengthy proposals, reports, memos,
spreadsheets, schedules, you name it—day after
day after day—these are the printers for the job.
Print from a USB Flash drive – Simply insert
a USB memory stick into the USB port
conveniently located on the side of the printer.
Print select file formats without the need for
a PC. Just follow the directions on the LCD
display, and you’re on your way in seconds.
They’re not just reliable, they’re also fast: the
B731dn prints at up to 55 ppm and the B721dn
at up to 49 ppm, with the first page appearing in
as little as 5 seconds.1 Users will spend less time
waiting for their documents—which print at a
crisp and clear 1200 x 1200 dpi resolution.
At home in your environment – B721dn and
B731dn printers are compatible with current
Windows® and Mac® operating systems, and all
are equipped with high-speed USB and 1 Gigabit
Ethernet connectivity, so that everyone can take
advantage of the productivity and cost savings.
With standard duplex printing you can double
your efficiency (and save resources) by printing
on both sides of the sheet. And with the straightthrough paper path, you can manually feed
sheets of up to 140 lb. (253 gsm) index bristol
or up to 80 #10 envelopes from the standard
paper tray.
ublished performance results based on laboratory testing of
print speed on letter-size sheets. Individual results may vary.
Memory DIMM sold separately.
3 B731dn only. Both models available with 18,000-page and
25,000-page toner cartridges. Declared yield in accordance with
ISO/IEC 19752.
4 Available in the U.S. and Canada only.
Keeping up with your needs—and environmental concerns.
The B721dn and B731dn fit the way you work—
today and, through an array of performanceenhancing options and upgrades, they can adapt
to match your future printing needs.
These printers can also help control your impact
on the environment – B721dn and B731dn
printers offer a number of environmentally
friendly features, including:
Both models come with 256 MB of memory and
630-sheet paper capacity. You can increase
memory to 768 MB1 for processing large files
and add a 160 GB hard disk drive for file storage.
• ENERGY STAR® compliance – With their lower
power consumption, these printers meet the
government’s standards for energy efficiency.
You can boost the paper capacity to a maximum
of 3,160 sheets. Options include up to three
additional 530-sheet paper trays or a 2,000sheet Large Capacity Feeder.
Also for fewer interventions, both models are
available with 18,000-page and high-capacity
25,000-page one-piece printer cartridges—
and the B731dn is available with an extra-high
capacity 36,000-page printer cartridge, as well.2
• Duplex (2-sided) printing – This technology
allows for savings in energy and resources,
in addition to using less media.
• One-piece consumables – Long-lasting,
user-replaceable printer cartridges remain
friendly to your budget while lowering the
number of items to dispose of or store.
• Low power consumption – These finely
engineered printers perform with low power
requirements during regular operation,
especially in Deep sleep mode.
Backed by legendary service and support –
OKI is so confident in the performance of the
B721dn and B731dn printers that they come with
a 1-Year On-Site warranty that can be increased
up to 5 years with options.3
And, for live technical support 24/7/365, you can
call, toll-free, 800.OKI.DATA (800.654.3282) and
speak to an expert located in North America.3
The B721dn and B731dn printers from OKI:
full-featured and energy-efficient monochrome
printers that can enhance the performance of
your demanding small- to mid-size workgroups.
Memory DIMM sold separately.
Declared yield in accordance with ISO/IEC 19752.
3 Available in the U.S. and Canada only.
4 P ublished performance results based on laboratory
testing of simplex (1-sided) print speed. Individual
results may vary.
THE B721dn/B731dn Digital Mono Printers AT A GLANCE:
Up to 49 ppm print speed 4
Up to 55 ppm print speed 4
Duplex (2-sided) printing standard
1200 x 1200 dpi resolution
High-speed USB and
1 Gigabit Internet connectivity
Backlit graphical display, alphanumeric keypad
100-sheet multi-purpose feeder
Convenient USB 2.0 port (applies to both models)
530-sheet standard paper tray
Optional 530-sheet 2nd paper tray
Optional 530-sheet
3rd paper tray
Optional 2,000-sheet
paper feeder
Optional 530-sheet
4th paper tray
Optional caster base
Optional 2nd, 3rd and 4th tray
configurations apply to both models
Optional 2nd tray and 2,000-sheet feeder
configuration applies to both models
• Simplex Print Speed: B721dn – up to 49 ppm;
B731dn – up to 55 ppm 1
• Duplex Print Speed: B721dn – up to 40 ipm;
B731dn – up to 42 ipm 1
• Time to First Page: As fast as 5 seconds 1
• Processor: 800 MHz CPU
• Print Resolution: 1200 x 1200 dpi
• Monthly Duty Cycle: B721dn – up to 250,000 pg.;
B731dn – up to 280,000 pg.
• Recommended Monthly Print Volume:
B721dn – 3,000 - 20,000 pg.;
B731dn – 5,000 - 30,000 pg.
• Emulations: PCL® 5e, PCL 6; PostScript® 3™;
PDF v1.8; XPS; IBM® ProPrinter®; Epson® FX
• Operating Systems: Microsoft® Windows® 8,
Windows 7, Windows Vista®, Windows XP,
Windows Server 2012, Server 2008 R2,
Server 2008, Server 2003; Mac OS® X 10.4 to 10.8
• Interfaces: Standard – High-Speed USB, USB Host,
1 Gigabit Ethernet (10/100/1000 Base-TX); models
with Wireless or Parallel interface available by
special order
Operator Panel
• Operator Panel: Alphanumeric keypad; 5-line,
blue back-lit graphical display
• Standard RAM: 256 MB
• Max RAM: 768 MB2
• Memory Storage: Optional 160 GB Hard Disk Drive
• Paper Types: Letter, Legal 13/13.5/14, Executive,
A4, A5, B5; Com 10 envelopes
• Paper Size: 3" x 5" min. to 8.5" x 14" and
banners up to 52" long
• Auto Size Detect: Trays 1, 2, 3, 4 – Letter/Legal/
Executive/A4/A5/B5/COM 10
• Standard Paper Output: 500 sheets face-down;
100 sheets face-up
• Paper Weight: 17 lb. bond – 140 lb. index bristol
(64 – 253 gsm)
Resident Fonts
• Scalable Fonts: 90 PCL fonts; 136 PostScript fonts.
• Barcodes: UPC-A, UPC-E, EAN/JAN-8, EAN/JAN-13,
Interleaved 2of5, Code39, Code128, EAN/
2D QR Barcode
• Size (WxDxH): 17.1" x 19.6" x 16.1"
(435 mm x 498 mm x 410 mm)
• Weight: 59.5 lb (27 Kg)
• Power Consumption: Deep sleep – 1.5W (3.9W
with installed options); Power-Save – 17W;
Standby – 95W; Average – 800W (49 ppm),
850W (55 ppm); Peak – 1,400W
• ENERGY STAR® Compliance: Yes
• ENERGY STAR TEC Value: 2.90 kWh (49ppm);
3.30 kWh (55ppm)
• Acoustic Noise: Operating: B731dn – 57dBA
53dBA or less; Standby – 30dBA or less
• Print Cartridges: Standard – 18,000 pages;
High-Capacity – 25,000 pages; Extra-High
Capacity (B731dn only) –36,000 pages3
Paper Handling
• Duplex: Standard
• Standard Paper Capacity: 630 sheets (530-sheet
Main Tray + 100-sheet Multi-purpose Tray)
• Additional Paper Capacity: Optional 530-sheet
2nd, 3rd and 4th Trays; 2,000-sheet Large
Capacity Feeder
• Maximum Paper Capacity: 3,160 sheets
(standard 630-sheet input + 530-sheet 2nd Tray +
2,000-sheet Large Capacity Feeder)
• Printer: 1-Year limited On-Site warranty 4
• LED Printhead: 5-Year limited warranty
Published performance results based on laboratory testing of
print speed on letter-size sheets. Individual results may vary.
2 Memory DIMM sold separately.
3 Declared yield in accordance with ISO/IEC 19752. Both models
ship with 10,000-page “starter” toner cartridge.
4 Available in the U.S. and Canada only.
Ordering Information
B721dn (120V)
B731dn (120V)
Parallel I/F model available by special order
Part Numbers
Wireless SKU: A non-ENERGY STAR compliant B731dn wireless
model is available. Please contact your OKI Sales
Representative for details.
2nd/3rd/4th 530-Sheet Paper Tray
Caster Base Stand
2,000-Sheet Large Capacity Feeder
512 MB DIMM Memory Expansion
160 GB Hard Disk Drive
OKIcare® Warranty Extensions 4
2-Year On-Site Warranty
3-Year On-Site Warranty
Print Cartridges
Standard Print Cartridge (all models):
Average life – 18,000 pg.3
High-Capacity Print Cartridge (all models):
Average life – 25,000 pg.3
Extra-High Capacity Print Cartridge (B731dn):
Average life – 36,000 pg.3
Print Media
Sheets Per Box
Bright White Proofing
Sheets (32 lb.; 8.5" x 11")
SynFlex™ Paper (Waterproof
and Tear-resistant; 8.5" x 11" )
Premium Envelopes (size #10):
Premium Envelopes (size #10):
For more information on Digital Monochrome
Printers and supplies from OKI, including OKIcare®
Extended Service Programs: 1.800.OKI.DATA
Specifications are subject to change without notice.
Featured products may not be available in all countries.
Please contact your local office for regional availability.
© 2016 Oki Data Americas, Inc. OKI, OKIcare Reg. T.M.,
Oki Electric Industry Co., Ltd. On-Site logo, 7-Day/24-Hour logo,
SynFlex T.M., Oki Data Americas, Inc. Windows, Vista, Reg. T.M.,
Microsoft Corp. PCL Reg. T.M., Hewlett-Packard Co. PostScript
Reg. T.M., PostScript 3 T.M., Adobe Systems, Inc. IBM, ProPrinter
Reg. T.M., IBM Inc. Epson Reg. T.M., Seiko Epson Corp. Mac
Reg. T.M., Apple, Inc. USB-IF logo T.M., Universal Serial Bus
Implementers Forum, Inc. ENERGY STAR Reg. T.M., U.S. EPA
Oki Data Americas, Inc.
2000 Bishops Gate Blvd.
Mount Laurel, NJ 08054-4620
Tel: 800.OKI.DATA (800.654.3282)
Fax: 856.222.5320
Printed in the USA
4140B Sladeview Crescent
Units 7 & 8
Mississauga, Ontario L5L 6A1
Tel: 905.608.5000
Fax: 905.608.5040
Latin America
2000 Bishops Gate Blvd.
Mount Laurel, NJ 08054-4620
Tel: 856.231.0002
Fax: 856.222.5071
Oki Data de México, S.A. de C.V.
Mariano Escobedo, 748 8º Piso
Col. Nueva Anzures C.P. 11590
México, D.F.
Tel: 55.5263.8780
Fax: 55.5250.3501
Oki Data do Brasil Informática Ltda.
Av. Alfredo Egídio de Souza Aranha, 100
Bloco C – 4º andar
04726-170 – São Paulo – SP – Brasil
Tel: 11.3444.3500
Fax: 11.3444.3502
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