OKI C612 Series Review

Good: Easy installation, mobile printing, environmentally friendly features.
Bad: Wireless connectivity is only optional, not eligible for OKI's COREFIDO warranty program.
Bottom Line: Scalable set of color printers aimed at smaller businesses.
Intended Users:
C612 Series
Small, Medium
Speed Black:
Speed Color:

Product Overview

OKI has recently released four new color devices aimed at the small-to-medium business market. The four devices are newer generations of its older counterparts, adding new features such as higher print speed and mobile printing capability.

One of those devices is the C612 Series, which replaces the older C610 Series. The C612 Series, which consists of two devices, prints at 35ppm in black and 33ppm in color. They include a 533MHz processor and a standard 256MB of memory, which optionally expands to 768MB. OKI offers an optional 16GB hard drive.

First-page-out time is 8 seconds in black and 9 seconds in color. The monthly duty cycle is 75,000 pages a month, but OKI recommends an average of up to 5,000 pages.

The two devices in this series are the C612n ($649), which is the base model, and the C612dn ($789), which includes standard duplexing.

More details on the C612 Series is in our Features section below.

Like other OKI devices, the C612 Series includes strong features, such as fast print speed, mobile printing and low energy use.  It’s worth a look for small-to-medium businesses that normally outsource specific printing tasks (i.e. marketing materials) and want to keep it in house.


The C612 Series includes PCL and PostScript printing language. They also support standard USB and Ethernet connectivity as well as optional wireless. Mobile printing is also supported via apps such as Google Cloud Print 2.0 and Apple AirPrint.

Paper handling starts with a 300-sheet main tray and a 100-sheet bypass. OKI offers two additional 530-sheet trays as options for a total of 1,460 sheets. The three 530-sheet trays accept up to 8.5″ x 14″ paper, while the bypass accommodates banner sizes of up to 52″.

Output consists of a 250-sheet bin.

The C612 Series contain a Utility Suite that includes features, such as color correct, color swatch utility, print job accounting, web driver installer and PDF direct print, to name a few.

As with other OKI devices, the C612 Series includes energy-saving features such as duplexing (on the C612dn), LED printing technology, Toner Save mode and is ENERGY STAR compliant (also on the C612dn).

The C612 Series’ aftermarket consumables consist of a 8,000-page black toner cartridge, 6,000-page each color toner cartridges (cyan, magenta and yellow) and 30,000-page image drums. According to our calculations, the cost per page is 2.1 cents in black and 13.9 cents in color. These costs are reasonable, but businesses can still control costs by utilizing the energy-saving features of the printers.

Security features include Internet Protocol Security (IPSec) compliance and a private printing feature. OKI offers an optional card release function for printing select documents.

The C612 Series has a one-year on-site warranty and a five-year limited warranty on the LED printheads.

  • Automatic Document Feeder?
  • Duplexing?
  • Ethernet Connectivity?
  • Wireless Connectivity?
  • Mobile Printing/Scanning?
  • Finishers?


Wireless connectivity is only optional and not standard.

Also, the C612 is not eligible for OKI’s COREFIDO five-year warranty program that covers free on-site repairs, free parts and labor, and national service support.


OKI Data Americas, headquartered in Mount Laurel, NJ, and a subsidiary of OKI Data Corporation of Japan, markets PC peripheral equipment and customized solutions under the OKI® brand, including digital color and monochrome printers and multifunction products, serial impact dot matrix printers, thermal label and POS printers, as well as a full line of options, accessories and consumables.

OKI Data Americas serves the graphic arts and production and specialty printing markets with the OKI proColor Series digital production printers. In addition, its Multimedia Production Platform category of production-quality A3 color devices meets a wide-range of graphic arts and commercial printing needs. Utilizing Genuine OKI toner ensures consistent, reliable and high-quality output that maximizes performance. OKI Data offers a broad portfolio of products built to optimize managed print engagements. OKI Data Americas takes a consultative approach to supporting every customer’s needs and delivering individualized print solutions that optimize business performance.

The company’s innovative technology is backed by Tokyo-based parent company OKI Electric Industry, a leader in telecom, infrastructure and mechatronics systems; and an approximately $4.7 billion multinational corporation according to its FY 2013 financial reporting. Keeping its customers’ needs top of mind, OKI Data Americas is ISO 9001:2008 certified and offers a selection of ENERGY STAR® certified products.

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