Overprinting in adobe illustrator

This becomes apparent only when one turns on the overprint preview or printing separations. This causes delays in the production process and reprinting may need to be performed.

For example:. From this version of Illustrator, you have the Discard White Overprint option to remove white overprint attributes in the Document Setup and Print dialogs.

This option is, by default, switched on in both dialogs. If the Discard White Overprint option is not selected in the Document Setup dialog, it can be overridden by selecting the option in the Print dialog. In this scenario the appearance attributes of previously selected objects is copied to the new object, resulting in overprint applied to the white-filled object.

A non-white object with overprint is changed to an object with white fill. Where colors printed from separate plates overlap or adjoin one another, press misregistration can cause gaps between colors on the final output.

To compensate for potential gaps between colors in artwork, print shops use a technique called trapping to create a small area of overlap called a trap between two adjoining colors.

You can use a separate, dedicated trapping program to create traps automatically, or you can use Illustrator to create traps manually. Overprint black ink to aid in registration. Overprinting black can prevent gaps from appearing between black and colored areas of your artwork. Overprint when the artwork does not share common ink colors and you want to create a trap or overlaid ink effects.

When overprinting process color mixes or custom colors that do not share common ink colors, the overprint color is added to the background color. You should also carefully check overprinted colors on separated artwork using integral proofs where each separation is shown in register on a single piece of paper or overlay proofs where the separations are shown in register on separate plastic sheets stacked on top of each other.

Consult with your print shop about the exact percentages of color to add to the black. To overprint all black in your artwork, select the Overprint Black option in the Print dialog box when you create color separations. This option works on all objects that have black applied through the K color channel. However, it does not work for objects that appear black because of their transparency settings or graphic styles.

When you print to a composite, or when your artwork contains overprinted objects that interact with transparency objects, you choose to simulate or discard overprinting. Legal Notices Online Privacy Policy. Adobe Illustrator Features What's New. Buy now. User Guide Cancel. About overprinting. You may want to overprint in the following situations:. Set up overprinting. Select the object or objects that you want to overprint.

Overprint black. Select all the objects you might want to overprint. Enter the percentage of black you want to overprint. All objects with the specified percentage will overprint. Select Fill, Stroke, or both to specify how to apply the overprinting.