G7 ‘Button’ Closer to Reality

Introduced in January, 2016, the G7 Press Control System Certification Program from Idealliance (Booth 1009) validates a press control system’s ability to monitor and control G7 gray balance and tonality in real time.

Certified G7 Press Control Systems allow print service providers to fully realize the benefits of the G7 methodology in their daily print production, not just as a one-time calibration event. INSTRUMENT FLIGHT technology from System Brunner is the world’s first press control solution to pass the new G7 Press Control System Certification Program.

Idealliance reports: “The G7 Press Control System Certification program certifies a system capable of automatically monitoring and controlling a production press run according to G7 gray balance and tonality specifications. Systems such as INSTRUMENT FLIGHT elevate G7 from a calibration procedure to a complete process control system from prepress to pressroom like having a “G7 button” on your press.”

While G7 is a well-proven methodology for calibrating printing systems, most offset press control systems still rely on traditional solid ink density measurements, with no way of monitoring and controlling G7’s mid-tone gray balance or neutral density aim values.

Variations occur

“Even when solid ink densities remain consistent on a G7-calibrated press, significant mid-tone gray variations—as much as six to 12 Delta E—can occur during a production run, resulting in visible color shifts that must be corrected by ink key adjustments or other means, notes Don Hutcheson, of HutchColor, LLC, who directed the Idealliance G7 Press Control System Certification Program development.

“To aid these adjustments, the press operator needs a real-time indication of how gray balance and neutral density compares to the G7 aim values, and how each ink needs to be increased or decreased,” Hutcheson continues.

Addressing the value of G7-based press control, Mike Graff, President and Chief Executive Officer of Sandy Alexander, Clifton, N.J., comments, “Sandy Alexander was one of the first adopters of G7 and we continue to rely on its methodology to support our position in the industry as a quality leader.

“As the first adopter of System Brunner’s INSTRUMENT FLIGHT in the U.S,” he continues, “we are eager to benefit from its new G7 capabilities, as we can now control the complete reproduction workflow from proof to printed sheet, according to G7 specifications. This system will help us maximize the value we get from G7—greater predictability, shorter makeready times, and more consistent printed results that meet the highest quality levels.”

For information on the G7 Press Control Certification Program go toidealliance.org/G7_Press_Control or contact Idealliance Senior Vice President Programming & Marketing Steve Bonoff at sbonoff@idealliance.org or 952/896-1908, or speak with Steve at the Idealliance booth (1009).

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