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The OKI C331dn
Color, Duplex, Network Printer

The fast, high-quality, energy-efficient color printer designed for your business or small workgroup

23 Pages Per Minute Color
25 PPM in Mono

List Price
Your Price
$ 339
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Superior quality at an affordable price
Network-ready, they combine fast printing speeds, incredible print quality, duplex (2-sided) printing standard, the ability to print on a wide variety of media, and the legendary reliability of OKI products, backed by industry-leading support
HD Color Printing technology
Both printers utilize this unique OKI process for breathtaking output. HD Color Printing technology combines multi-level LED printheads and microfine toner for precise toner placement; deep, saturated colors; and fine detail on regular copy paper and glossy media.
Exceptional paper handling
The C331dn and C531dn both have a standard paper capacity of 350 sheets: a 250-sheet paper tray plus built-in 100-sheet multi-purpose tray for labels, envelopes, transparencies, and thicker media up to 80 lb. cover (220 gsm). They can print everything from 3" x 5" cards to banner-size sheets up to 8.5" x 52"2.
And their paper capacity expands to 880 sheets with an optional 530-sheet 2nd tray.
Perfect for virtually any printing environment
The versatile C331dn and C531dn both work beautifully in the most popular operating system environments. They come with PCL® 6, PCL 5c and PostScript® 3™ emulations, for professional-looking text and graphics.
Unmatched warranty support
We’re so confident in the reliability of the C331dn and C531dn that we provide an industry-leading 5-year warranty on their printheads, and a 3-year Carry-In/Depot limited printer warranty and optional coverage extensions.3
If you need technical assistance, you can speak to a live OKI expert located in North America by calling 800.OKI.DATA (800.654.3282) at any time.


  • HD Color printing technology for sharp detail and rich, dramatic color
  • Prints banner-size sheets up to 52"
  • Up to 1200 x 600 dpi resolution
  • 350-sheet standard paper capacity; expands to 880 sheets with optional 2nd paper tray
  • Windows® and Mac® compatibility
  • Low profile: just 9.5" in height
  • ENERGY STAR® compliant
  • 3-Year Carry-In/Depot limited warranty on printer; 5-Year limited warranty on LED printheads
  • Live, toll-free technical support 24/7/365 (US & Canada)

Download the PDF brochure

Feature Comparison


OKI C331dn

OKI C531dn

Print Speed 23 ppm Color, 25 ppm Mono 27 ppm Color, 31 ppm Mono
Time to First Page 9.0 sec. Color, 8.5 sec. Mono 8.0 sec. Color, 7.5 sec. Mono
Toner Capacity 3,000-pg. CMY, 3,500-pg. Black 5,000-pg. CMYK
(STD/ Max)
128 MB / 640 MB 256 MB / 768 MB
Document Storage Memory N/A 16 GB SD Card (optional)

Common Features

Duplex Printing
Processor 532 MHz Power PC CPU
Connectivity High-speed USB 2.0, 10/100 Base-TX Network
Emulations PCL® 5c, PCL 6, PostScript® 3™
Size (WxDxH) 16.1" x 19.8" x 9.5" (410 mm x 504 mm x 242 mm)

More Features

Digital Color printers from OKI deliver more
than brilliant output at best-in-class speeds
The C331dn and C531dn also offer a long list of features that can improve your image, profitability and peace of mind:
Control the quality of your output
Color Swatch Select the color swatches that match your target and simply use their RGB or CMYK values while creating your document to ensure matching colors. Customize a swatch by setting the Hue, Saturation and Lightness to target your custom color.
Collor Correct
Makes it easy to adjust colors commonly found in applications like Microsoft® Word, Excel® and PowerPoint®. It also lets you adjust the overall color of a print by controlling the lightness, darkness and contrast of images, and the intensity and lightness of the colors.

Print Job Accounting Software
Enables tracking of color and mono printing costs, easy monitoring of printing activity, and greater control of printer usage. It generates reports for administrative, bill-back or cost-accounting purposes. User permissions can be assigned and are stored on the printer, so the system is totally secure.

An important feature of Print Job Accounting is the use of color printing restrictions. This lets you control and monitor color usage by defining who can print and what gets printed, making color printing cost-effective. Decide who and what can print in color, in black & white or not at all.
Access levels can be assigned by user name, application, file name and web sites. Once policies are configured, the printer determines how—or if—incoming jobs will print. All policies are password-protected for added security.

Environmentally Friendly Features:
Duplex (2-sided) printing It’s standard on the C331dn and C351dn. Use both sides of a sheet rather than two sheets. Saves paper—and is even more energy-efficient.

Automatic ECO Mode These printers optimize the print time for small jobs, using less energy. Same terrific output, faster throughput, lower power consumption. Everybody wins.

Deep sleep mode When left on for an extended period, the C331dn and C531dn slip into this mode, which uses less than 1.5 watts of power.

One-piece image drum This long-lasting, user-replaceable consumable remains friendly to your budget while lowering the number of items to
dispose of and store.

ENERGY STAR® compliance With their lower power consumption—especially in Deep sleep mode— and standard duplexing, these printers meet the government’s standards for energy efficiency.


Download the PDF brochure

Print Speed C331dn – up to 23 ppm Color/ 25 ppm Mono;
C531dn – up to 27 ppm Color/ 31 ppm Mono 1
Time to First Page C331dn – 9 sec. Color, 8.5 sec. Mono;
C531dn – 8 sec. Color, 7.5 sec. Mono 1
Processor 532 MHz PowerPC CPU
HD Color Printing Technology Combines multilevel LED printheads and microfine toner for sharp detail and rich color depth
Print Resolution Up to 1200 x 600 dpi
Duty Cycle C331dn – up to 45,000 pg./mo.
C531dn – up to 60,000 pg./mo.
Duplex Printing Standard
Web-based Printer Management PrintSuperVision and OkiLAN® Embedded
Web Server
PDF Direct Print Receives and prints .pdf files (through version 1.7) without opening an application, enhancing productivity
Encrypted Secure Printing (C531dn Only) PIN/password-enabled; AES 256-bit encryption; Message Authentication Code (MAC)
Network Security IP address filtering, IPsec,
MAC address filtering
Print Job Accounting Software Tracks color/mono pages by individual or department; allows control over color printing access and converts unauthorized color print jobs to black & white
ECO Mode Power-saving, performance-enhancing automatic engine speed adjustment on print jobs requiring 2 or fewer pages
Utilities Color Matching software and
Color Correct from OKI
   Printer Languages PCL® 6, PCL 5c;
PostScript® 3™; IBM® ProPrinter®, Epson® FX
Operating Systems Microsoft® Windows® 8
Windows 7, Windows Vista®, Windows XP Home/
XP Professional, Windows Server 2008,
Server 2008 R2, Server 2003; Mac® OS X 10.5
and higher
Network Protocols TCP/IP – IPv4/v6, LPR, HTTP(IPP), DHCP, SNMPv1/v3, DNS, DDNS, UPnP, Bonjour®, WINS, SSL/TLS, SMTP, POP3, SNTP, WSDPrint; support for Netware® and AppleTalk®
Network Interface 10/100 Base-TX Ethernet
Local Ports High-speed USB v2.0
Memory Standard: C331dn – 128 MB; C531dn – 256 MB
Maximum: C331dn – 640 MB; C531dn – 768 MB
Memory Storage: Optional 16 GB SD Memory Card (C531dn only)
Typefaces • Scalable: 86 PCL, 80 PostScript
• Bitmap: OCR-A, OCR-B; Line Printer
• Barcode: 11 + PDF417; USPS
Paper Input 350 sheets standard (250-sheet Main Tray + 100-sheet Multi-purpose Tray); 880 sheets max. with optional 530-sheet 2nd Paper Tray
Multi-pupose Tray 100 sheets – handles card stock, labels, envelopes (max. 10) and banners
Paper Sizes Main Tray from 4.1" x 5.8" to 8.5" x 14";
Multi-purpose Tray from 3" x 5" to 8.5" x 52" banners3; Duplex/Optional 2nd Tray from 5.8" x 8.3" to 8.5" x 14"
Paper Weight Main Tray/Optional 2nd Tray/Duplex 17 lb. bond – 65 lb. cover (64 – 176 gsm); Multi-purpose Tray 17 lb. bond – 80 lb. cover
(75 – 220 gsm)
Size 16.1" x 19.8" x 9.5"
Weight Approx. 48.5 lb. (22.0 kg)
Power Consumption Auto-Off <0.5W; Deep sleep mode <1.5W; Power Save <14W; Idle 90W; Typical – C331dn 480W, C531dn 540W; Peak 1170W
Acoustic Noise Operating – 54 dBA or less;
Standby – 37 dBA or less; Power Save – inaudible
Toner Cartridges Separate Cyan, Magenta,
Yellow and Black
Image Drum Single unit (CMYK) Approx.
20,000 pages
Toner Cartridge Life: Both models – 3,000-pg. CMY, 3,500-pg. Black; C531dn only – High- Capacity 5,000-pg. CMYK4
Image Drum Life: Approx. 20,000 pages
Printer Warranty: 3-Year Carry-In/Depot limited warranty6
Digital LED Printheads: 5-Year limited warranty
NOTES: 1 Published performance results based on laboratory testing of simplex (1-sided) print speed. Individual results may vary.
2 Requires optional SD memory card.
3 Optimal performance on larger files may require additional RAM.
4 Based on ISO 19798, letter-size pages. 5,000-page
High-Capacity toner for C531dn only. C331dn ships with
1,000-page and C531dn ships with 2,000-page “starter” cartridges (CMYK).
5 Estimated life, based on 3 pages per job.
6 Available in the U.S. and Canada only.

OKI C531dn Accessories

530 Sheet 2nd Paper Tray

Your Price
$ 199
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256 MB Memory Expansion

Your Price
$ 495
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512 MB Memory Expansion
Your Price
$ 630
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16 GB SD Memory Card (C531 Only) Your Price
$ 630
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This Model comes with a 3 year return to depot warranty.
Protect your investment with a warranty upgrade from OKI Data.

OKI Data 3 year Exchange - 2-3 Day delivery Your Price
$ 1800
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OKI Data 3 year Exchange -Overnight delivery Your Price
$ 2400
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OKI Data 3 year Exchange -On-Site Repair Your Price
$ 2400
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C331dn & C531dn

Cyan Toner Cartridge
3,000 pg. Your Price
$ 2550
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Magenta Toner Cartridge 3,000 pg. Your Price
$ 295
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Yellow Toner Cartridge 3,000 pg. Your Price
$ 495
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Black Toner Cartridge
3,000 pg. Your Price
$ 359
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High Capacity Toner Cartridges for the C531dn (only)

Cyan Toner Cartridge
5,000 pg. Your Price
$ 2550
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Magenta Toner Cartridge 5,000 pg. Your Price
$ 295
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Yellow Toner Cartridge 5,000 pg. Your Price
$ 495
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Black Toner Cartridge 5,000 pg. Your Price
$ 359
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Best Sellers

Oki C331 dn
23 ppm COLOR
      $ 339

Oki C531 dn
27 ppm COLOR
      $ 435

 Best Sellers