Control System Calculates Ink Surges On Press

KBA North America is introducing a new feature to its closed-loop Densitronic S scanning spectrodensitometer system that is claimed will reduce waste.

KBA North America is introducing a new feature to its closed-loop Densitronic S scanning spectrodensitometer system that is claimed will reduce waste.

Densitronic measures the density and spectral values on the x and y axis, meaning it reads anywhere on the printed sheet.

The new feature, Dynamic Control, will make a greater difference to printers, claimed KBA because Dynamic Control calculates ink surges based on a reference sheet and opens the ink keys to a specific target according to what is needed.

That way it achieves the reference densities, which reduces spoilage and waste whilst streamlining jobs faster than before, added the company.

Crystal Flutur, KBA North America's product specialist, said: "Printers are trying to be more mindful of their colour control, especially with high quality fast turn-around work.

Densitronic S with Dynamic Control is the solution.

This new feature puts printers in even more control of their work by drastically reducing make-ready waste on press, as well as reducing the number of sheets up to full press production." Dynamic Control is an optional software feature that is available for printers using KBA presses with Densitronic S scanning densitometer systems.

New system installations will be activated during the first training session, whilst re-fitting is possible of all KBA presses from 1995 to the present day.

Re-fitting of the press console is not necessary in most cases, added the company.

Flutur added: "Dynamic Control on the Densitronic S sets KBA apart from other press manufacturers.

For example, the typical inking unit construction of another press manufacturer can need up to 900 sheets to adjust the values.

Even the fast-reacting units used on a KBA press can lead to up to 700 sheets to adjust colour.

With Dynamic Control, the reference density is reached at a set number of sheets.

Even in zones with five per cent area coverage and less the reference can be reached at about 120 sheets." The KBA Densitronic S is a combined density and colour measuring system for quality control during and after printing.

Unlike other systems, Densitronic S also permits direct measurements within the image, claimed KBA.

Deviations from defined target densities, colour values and other quality parameters (dot gain and trapping, for instance) are recognised and displayed.

With integration for on-line control, the density and spectral deviations are converted in to corrective adjustments for the individual ink keys.

The Densitronic S controls the density and spectral parameters of each sheet by measuring along control strips or directly on the image.

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