Gerber OMEGA CP Reference Manual page 706

692 Chapter 63:
Printing a Job on a Vinyl Printer
Understanding Print Order
When Backing White is turned on in the GerberColor Backing and Finish dialog box, it appears
as the first foil in the Foil Color list of Print Options. If the job is to be printed in Reverse Print
Order, the Backing White foil is the last foil in the Print Order list.
Applying Backing White to Process Colors may only affect
print order when a job contains both spot and process foils.
Depending on the print order of the job, Backing White may be
placed between process colors and spot colors and yield
undesirable results.
Note: Backing White prints in 300 x 300 DPI mode when printing to a GERBER EDGE 2 or
EDGE FX. If xx appears in the IPM column of the Foil color list, your EDGE 2 or GERBER
EDGE FX is in 600 x 300 DPI Print Mode and Backing White will not print. Choose the 300 x
300 DPI Print Mode from the drop-down menu in the Print Options dialog box or in the
Plotter/Printer Select dialog box.
To apply a white undercoat (Backing White) to a job
1 Output the job to GSPPlot.
2 Click Setup > Print Options to open the Print Options dialog box.
3 Click Backing/Finish to open the GerberColor Backing and Finish dialog box.
4 Turn on Backing White to activate the controls.
5 Turn off Process Color Only to apply Backing White to spot and process colors.
6 In Application Type choose Print Shapes, Print Area, or Job Area.
7 Turn on Apply to Clear Fills/Strokes to apply Backing White to clear objects.