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Screening

Halftoning - screening family

Halftoning defines the screening method to use for text and for non-text.

Syntax

XPath: /JDF[contains(@Types="Screening")]/ResourcePool/ScreeningParams/ScreenSelector/@ScreeningFamily

Type

String

Syntax

XPath: /JDF[contains(@Types="Screening")]/ResourcePool/ScreeningParams/ScreenSelector/@SourceObjects

Type

Enumeration

Supported values

@ScreeningFamily

Description

Gradation

Course halftoning

Resolution

Fine halftoning

ErrorDiffusion

Very fine halftoning

The following table is valid for the imagePRESS C800 / C850 Series:

@SourceObjects

Description

All (default)

@ScreeningFamily applies to all objects.

ImagePhotographic

ImageScreenShot

SmoothShades

LineArt

@ScreeningFamily applies to all objects except text. Always use any of these values in combination with @ScreeningFamily with @SourceObjects="Text".

Text

@ScreeningFamily applies to text.

The following table is only valid for the imagePRESS C10000VP Series:

@SourceObjects

Description

LineArt

@ScreeningFamily applies to graphics. Graphics are vector images.

ImagePhotographic

ImageScreenShot

SmoothShades

@ScreeningFamily applies to images. Images are bitmap images.

Text

@ScreeningFamily applies to text.

Example: job with ErrorDiffusion for text and Gradation for the rest (images, graphics, …)

<JDF Types="... Screening ..." ... >

<ResourcePool>

<ScreeningParams Class="Parameter" ID="ScreenID" Status="Incomplete">

<ScreenSelector ScreeningFamily="Gradation" SourceObjects="ImagePhotographic ImageScreenShot LineArt SmoothShades"/>

<ScreenSelector ScreeningFamily="ErrorDiffusion" SourceObjects="Text"/>

</ScreeningParams>

</ResourcePool>

<ResourceLinkPool>

<ScreeningParamsLink rRef="ScreenID" Usage="Usage" CombinedProcessIndex="index into Types for Screening"/>

</ResourceLinkPool>

</JDF>

Example: job with Gradation for all objects ("All" is default)

<JDF Types="... Screening ..." ... >

<ResourcePool>

<ScreeningParams Class="Parameter" ID="ScreenID" Status="Incomplete">

<ScreenSelector ScreeningFamily="Gradation"/>

</ScreeningParams>

</ResourcePool>

<ResourceLinkPool>

<ScreeningParamsLink rRef="ScreenID" Usage="Usage" CombinedProcessIndex="index into Types for Screening"/>

</ResourceLinkPool>

</JDF>