System information

Halftone simulation for proofing
For advanced proofing purposes, the Halftone Simulation feature offers user-controlled halftone generation. For
halftone resolutions that are lower than the copier/printer resolution, halftoned proofs can simulate the dots on
films or plates for offset printing that result from screening an image.
You can select preset halftone screens to print jobs with good results. If Halftone Simulation is supported by your
Fiery Server, you can define custom screening functions applied to your print job. The Fiery Server may also support
different frequency values for each color channel.
When color accuracy is more important than dot simulation, make sure that the Fiery Server is calibrated using the
particular halftone screen you use and that the output profile you print with is also matched to the halftone screen.
Changing a halftone screen usually modifies the color response of the copier/printer.
When dot simulation is more important than color accuracy, print with no CMYK simulation (with the CMYK/
Grayscale Source set to Bypass Conversion or None).
View or edit custom halftone screens
You can customize the values for a halftone screen by configuring a custom halftone screen and then selecting the
screen in the Halftone Simulation print option when you print a job.
You can specify up to three custom halftone screens that correspond to the User Screen 1, User Screen 2, and User
Screen 3 settings for the Halftone Simulation print option. For each of these screens, you can define the angle,
frequency, and dot shape.
Specify a custom halftone screen
You specify a custom halftone screen in the Halftone Simulation window.
1
In Device Center, click the Color Setup tab and click Halftone Simulation.
2
In the Halftone Simulation window, specify the angle and frequency for each color channel (Cyan, Magenta,
Yellow, and Black), and dot shape for a custom halftone screen.
• Angle - Angle in degrees (0-360) for each color.
• Frequency - Frequency refers to the number of rows of spots that combine to form a halftone dot, expressed
in Lines per Inch (LPI).
To constrain all four color channels to the same Frequency value, select the link icon.
If your Fiery Server does not support different Frequency values for each color, the Frequency value is applied
to all color channels.
• Dot shape - Select a shape from the list or select Custom to specify a custom shape.
Specify a custom dot shape
You can customize a dot shape if the standard dot shapes do not meet your needs.
1
In the Edit Dot Shape window, select a predefined shape from the Template list.
The PostScript function for the shape appears in the text field.
2
Modify the shape by editing the PostScript function, and then click Preview to view it.
Fiery Command WorkStation
Graphic arts tools
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