The C3000 Series, C5000 Series and C9000 Series from OKI Printing Solutions are Digital LED Colour printers. With their fixed arrays of light emitting diodes (LEDs) and precision lenses, they have fewer moving parts, less complexity, and an intuitively more efficient printing method than laser, inkjet and solid ink.
In the Single Pass Colour process, the paper medium follows a streamlined path, passing beneath four in-line printheads – one each for cyan, magenta, yellow and black (CMYK) – the fuser, and out to the user. Simple, effective and fast.
Colour laser technology, on the other hand, requires four passes – not one – to process a 4-color image. Only when the fourth pass is completed will all of the toner be fused to the paper. More time is expended while the laser-produced image is completed, transferred and fused.
Single Pass Color Digital Technology puts colour on the paper with exacting accuracy – up to true 1200 x 1200 dpi output – for breathtaking reproduction and presentation-quality documents in less time than ordinary technologies and for less overall cost.

LED (Light Emitting Diode) printheads uses a single, pixel-size, modulating light source to recreate images. This beam emanates from a stationary array containing thousands of LEDs. Light from each diode passes through a focusing lens onto an image drum that serves as a pohotreceptor. Toner is attracted to this latent image and transferred to the paper.
(Figure 1)
Laser printheads also use a single light source. However, this beam is aimed at a revolving mirror that reflects it through a series of focusing lenses and off a mirror to an image drum. Toner is attracted to this latent image and transferred to the paper. Lasers produce the same results as Digital LEDs.
(Figure 2)
Toner-based printers from OKI Printing Solutions employ both Digital LED and Laser Technology.

PCL & PostScript printing explained
PCL Driver and PostScript Driver - what's the difference?
Understanding your printer
PCL and PostScript are both essentially languages used by your printer in order to convert data into a finished print job. Each language has its advantages and disadvantages - PCL is best for everyday, text-based office documents, while PS is more suited to large PDF or other image-heavy documents.
PCL
Advantages
Fast print processing.
Widely supported in many different Operating Systems
Disadvantages
The same print job may vary slightly from printer to printer
Quality of graphics dependent on the print device
Not supported in most Macintosh environments. For everyday office documents we recommend using the PCL driver.
PostScript
Advantages
Graphic objects are often more detailed
The same print file should print identically on all print devices
Disadvantages
Print processing can be slow
Not found in as many platforms as PCL
