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Screening

Halftoning - screening frequency

This option specifies the frequency and spot function of the halftoning screens of PostScript and PDF jobs.

Syntax

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

Type

Double

Syntax

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

Type

NMTOKEN

Supported values

@Frequency

@SpotFunction

Description

200 (default)

Line (default)

200 lpi line

200

SimpleDot

200 lpi dot

125

SimpleDot

coarse dot screen

Example - 200 lpi dot halftoned job

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

<ResourcePool>

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

<ScreenSelector Frequency="200" ScreeningType="AM" SpotFunction="SimpleDot"/>

</ScreeningParams>...

</ResourcePool>

<ResourceLinkPool>

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

</ResourceLinkPool>

</JDF>