-blend

Set the blend mode for PDF.

Syntax

-blend value

Values

Normal Selects the source color, ignoring the backdrop.

Multiply Multiplies the backdrop and source color values.

Screen Multiplies the complements of the backdrop and source color values, then complements the result.

Overlay Multiplies or screens the colors, depending on the backdrop color value.

Darken Selects the darker of the backdrop and source colors.

Lighten Selects the lighter of the backdrop and source colors.

ColorDodge Brightens the backdrop color to reflect the source color.

ColorBurn Darkens the backdrop color to reflect the source color.

HardLight Multiplies or screens the colors, depending on the source color value.

SoftLight Darkens or lightens the colors, depending on the source color value.

Difference Subtracts the darker of the two constituent colors from the lighter color.

Exclusion Produces an effect similar to that of the Difference mode but lower in contrast.

The default value is Multiply.

Normal is recommended for transparent images.

Printer Configuration File

You can define the blend mode in the Printer Configuration File (PRT). For example:

<!-- <Blend>Normal</Blend> -->

See Also

PDF Blend Modes: Addendum
For sample collateral, see Transparent Color Image Support in the User Guide.