Adobe InDesign - Manual (Page 723)

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Note:
Note:
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1. Select the objects to which you want to apply registration color.
2. Choose Window > Swatches.
3. In the Swatches panel, click the Registration color swatch .
Printing gradients as separations
Consider the following when producing separations for documents with gradients:
A gradient created in InDesign that contains a combination of spot and process colors will be separated onto both the process and spot
plates.
A gradient that contains process colors will be separated onto the process plates.
A gradient that contains two tints of the same spot color will be separated onto a single spot color plate.
To create a gradient that separates on one piece of film between a spot color and white, create a gradient fill between the spot color and the
Paper swatch in the Swatches panel.
If you create a gradient between two spot colors, you should assign different screen angles to those spot colors. If two spot colors have the
same screen angle, they will overprint each other. If you’re not sure what the angles should be, consult with your prepress service provider.
Printing a composite
You can print a color or grayscale composite proof to check colors in your document. A composite image can help you design and proof your
layout before you print final (and costly) separations.
When InDesign prints a composite, it prints all of the colors used in the file on one plate, regardless of whether any individual colors are selected.
Consider the following issues when printing composites:
While no proof will give you an exact representation of your final output, you can greatly improve its accuracy by calibrating all the devices
you use to create a document (such as scanners, monitors, and printers). If the devices are calibrated, the color management system can
help you get predictable and consistent color.
Any overprinting options that you’ve selected in the document will print correctly on a printer that supports overprinting. Since most desktop
printers don’t support overprinting, you can simulate the effects of overprinting by selecting Simulate Overprint in the Output section of the
Print dialog box.
Selecting Simulate Overprint will convert spot colors to process colors for printing. If you intend to use a file for separations on a RIP, or for
final output, do not select this option.
When you print to a black-and-white printer, InDesign produces a grayscale composite version of the pages. If the document contains color,
InDesign prints visually correct grays to simulate that color. For example, the gray that simulates a 20% tint of yellow is lighter than a 20%
tint of black, since yellow is visually lighter than black.
When you print a book with chapters containing conflicting spot inks or trap styles, you can instruct InDesign to synchronize settings with the
master document.
If you’re using color management with the Book feature, make sure that each document in the book uses the same color management
settings in the Color Settings dialog box.
Remember that, like monitors, color printers vary greatly in color reproduction quality; thus, proofs from your service provider are the best
way to verify how the finished piece will look.
Preview color separations
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