Calibrating, Printing and Proofing by the G7™ Method
Calibrating, Printing and Proofing by the G7™ Method
Calibrating, Printing and Proofing by the G7™ Method
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<strong>Calibrating</strong>, <strong>Printing</strong> <strong>and</strong> <strong>Proofing</strong> <strong>by</strong> <strong>the</strong> G7 <strong>Method</strong> Version 6, August 2006<br />
Finding <strong>the</strong> New Aim for a 50% Curve Point <strong>by</strong> <strong>the</strong> ‘Up-Across-Down’ method<br />
7.7 Correcting gray balance in RIP curves<br />
The G7 CMY graph sheet assumes <strong>the</strong> device is already gray-balanced via SID adjustments or some<br />
o<strong>the</strong>r means. In this case, one common RIP curve should be calculated for CMY, with a separate curve<br />
for black. If you could NOT achieve gray balance at <strong>the</strong> device level (e.g. on <strong>the</strong> press), follow <strong>the</strong> steps<br />
in Section 8, to produce separate RIP correction values for Cyan, Magenta, <strong>and</strong> Yellow.<br />
7.8 Apply new aim values to RIP or CtP device.<br />
Apply <strong>the</strong> new aim values from your worksheet to <strong>the</strong> RIP or calibration utility. Note that some RIPs<br />
require you to enter 'Measured' values instead of 'Wanted' values, while o<strong>the</strong>r RIPs ask for delta values.<br />
This method assumes you know how to modify <strong>the</strong> New Aim values accordingly. When in doubt,<br />
remember <strong>the</strong> new aim value is what each curve point should be AFTER correction.<br />
26 Copyright © International Digital Enterprise Alliance, Inc. [IDEAlliance] (2006). All Rights Reserved.