QuadTech

INSTRUMENT FLIGHT®+L*a*b*
With QuadTech Color Control System and SpectralCam™

Thanks to the partnership between QuadTech Inc. and System Brunner, INSTRUMENT FLIGHT technology is available to the web offset printing sector. Since the start of the successful cooperation, nearly 600 installations have been made worldwide and the systems developed further.

The QuadTech Inline “Closed Loop” Color Control System with SpectralCam records the spectral measurement data on the running web at full press speed from a control strip only 1.6mm high. The intelligent sensor technology records the data from up to 12 measurement patches simultaneously.

The INSTRUMENT FLIGHT software processes the spectral measurement data from every measurement patch, calculates the multifilter densities according to Status E or T, and also the L*a*b* values. From a comparison with the nominal target values, the optimal color adjustment is calculated for every inking zone in accordance with the regulation strategy selected, which is then carried out by the Color Control System in closed loop. The measurement data are graphically displayed at the system operating panel.

The QuadTech Color Control System can be connected to all web presses. In combination with INSTRUMENT FLIGHT +L*a*b*, the user benefits from a comprehensive color management system with a very high added value.

QuadTech Spectral Cam

The most important properties and functions:

  • Selection of the stored print standards and the Balance Control Priority™
  • Color control is carried out in accordance with all parameters defined in the standard with special System Brunner color/gray balance algorithm and L*a*b*, whereby more than 30 influencing variables are taken into account
  • Automatic adjustment of the solid tone target densities to the smallest ∆E for L*a*b* reference
  • 5 different Balance Control Priorities™ (gray balance priority, ISO/PSO, G7®, solid tone balance, GCR) 
  • Display of the color/gray balance-related regulation recommendations for every inking zone and printing unit
  • Display of the solid ink densities, tone value increases/CMY spread, gray balances, 5-star rating at a glance in the Hexagon diagram
  • Display of the L* a* b* values with Gamut, tone value increases, solid ink densities at a glance
  • Balance Navigator® for fast, repeatable color/tonal value corrections in a closed loop
  • OK sheet definition and color control in every inking zone in accordance with all nominal target values of the OK sheet
  • Editor for defining house standards
  • Statistical run logging

Benefits: Efficiency – Economy – Flexibility – Quality

  • Efficiently maintaining print standards in daily print production
  • Color control always uniform, regardless of the printer
  • The printer always sees in real time whether the tolerances of the selected standard are complied with or where any significant deviations may be
  • Optimal color stability during the run, better repeatability of the print results, better visual conformity with the standardized proof
  • Reduced makeready times and materials consumption through greater process mastery
  • A link between prepress and the pressroom for better communication
  • Rapid process diagnostics saves time and reduces costs
  • Knowing how the different consumable materials and machine settings influence the print result saves time and reduces costs
  • Monitoring of the press condition as a complete printing system
  • Early warning system in the event of changing and worsening conditions 
  • Evaluation and purposeful selection of the most suitable consumable materials
  • A high degree of reproducibility for repeat jobs
  • All measurements are logged so the quality level can be proved
  • Production reports as evidence of print quality
  • In-depth training and optimization guidance by System Brunner