Those looking at the latest bunch of machines being introduced might wonder what's different about them, for most are based on existing technologies and represent more of an upgrade rather than a shiny new platform. But therein lies the saying: 'if it ain't broke, don't fix it'.

We should all be able to ascertain from all these recognisable engines making their way to market that what sits under the bonnet represents the real key to changes in today's ink-jet printers. Yes, we will still see new and different solutions being introduced as time goes on but, certainly for now, most upgrades don't rely on cosmetics but, rather, on enhancements that are often invisible.

HP Scitex's announcements of its new UV-curable platforms shows a line-up remarkably similar to existing machines. Disappointment might ensue from those who really wanted to see something different but, if the base shape and configuration of the products already out there are perfectly satisfactory, why spend a fortune just for the sake of a heavy redesign?

Printing machines aren't like cars where some people like the cachet of driving around in the latest model. Instead, they're probably more like an Aga where a familiar shape and modus operandi have been in place for a long time and improvements, such as fuel efficiency, are hidden beneath the surface.

Wide-format ink-jet machines should be based on performance and reliability. If a proven design and build both work, then there's no reason to change either unless there is a major flaw in the original configuration. As a result, many of today's engines have changed little in appearance as the years have passed because they don't need to be modified on the outside. After all, the material normally goes in one end and comes out of the other and, as a result, we've come to accept the styles and parameters used by manufacturers because they work and we understand how to use them.

But even though a revised model might look the same as its predecessor, don't be fooled into thinking it is. For most machines in use today, there are development teams beavering away in the background working on the next levels of enhancements. These platforms are the ones which have succeeded in longevity through use in practical environments so there really is little point in making unnecessary alterations to their appearance.

Technologies change and improve, and new ideas are spawned from existing developments. If machines can retain their familiarity, then good for them, and if an existing design and appearance bring considerable staying power to a model, then that's even better as it provides proof that, beneath the surface, refinements are continuing to add benefits.