WHAT DOES THE PRINT CONTROLLER DO?

WHAT DOES
THE PRINT CONTROLLER DO?

The print process is managed by a print controller, sometimes referred to as a print server or RIP (raster image processor).

The controller extracts and processes compressed print files, sending data to the printer in a format that it understands. Each pixel or vector coordinate is translated by the RIP and printed as a finely measured droplet of ink.

Some systems have a dedicated controller, whilst others can be configured with third party controller. Both have their advantages. Dedicated RIPs are developed specifically for the printer and can offer control over a wider range of printer functions. Third party RIPs are developed to work with a variety of systems and can offer a common workflow across different platforms.

Because large format graphic files are data rich, you should look for a controller with a fast processor and plenty of memory (RAM). Whilst specifying a powerful controller may increase the initial system cost, it will improve productivity and reduce the risk of bottlenecks when the workload increases.

The print controller also provides support for colour management. Good colour management is essential when producing customer-facing print as it ensures that the colours output by the printer are accurate and consistent.

A good colour management system will allow you to create output based on ISO, SWOP and Japan Color print standards.

Other features that support good colour management include colour calibration (or profiling), PANTONE® matching and trapping (or overprinting). Colour calibration enables output to be matched across multiple devices, PANTONE® support ensures that logo colours are accurately reproduced, and trapping enables one colour (black text, for example) to be printed over another.

Considerations:

Am I happy to use a manufacturer’s dedicated printer-specific RIP?
Is there a third party controller that offers a common platform with other printers?
Does the RIP offer ICC colour management and PANTONE® support?
Does it allow jobs to be edited (resized, cropped, tiled etc) prior to printing?

READ ARTICLE:
The real-world benefits of colour calibration
by Pete Sammon, RUK