Screening

Halftoning - Screening frequency

Syntax

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

Type

Double

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

Type

NMTOKEN

Supported values

If a specified screening frequency is not supported for the resolution of the job, the default screening frequency is ignored.

Description

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

Example - 125 lpi halftoned job

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

<ResourcePool>

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

<ScreenSelector Frequency="125" ScreeningType="AM"/>

</ScreeningParams>...

</ResourcePool>

<ResourceLinkPool>

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

</ResourceLinkPool>

</JDF>