Overprint

Once you adjust the tone curves for the duotone conversion, you can further customize the colors displaying your image by choosing Overprint colors.

Overprint colors are the colors appearing on an image when two or more colors overlap. The Overprints displays all possible instances when the colors that you have chosen for your duotone conversion can overlap. Associated with each instance is the color produced by the overlap. You can also choose new Overprint colors.

To access the Duotone option you must first convert your bitmap to Grayscale. For more information, see "Converting bitmaps to the Grayscale color mode" on page 571.

To convert a grayscale bitmap to the Duotone color mode

1 Select the bitmap with the Pick tool.

2 Click Bitmaps, Mode, Duotone (8-bit).

3 From the Type list box, choose one of the following:

• Monotone — creates a grayscale image that prints using a single ink

• Duotone — creates a grayscale image that prints using two inks. In most cases, one ink is black and one is colored.

• Tritone — creates a grayscale image that prints using three inks. In most cases, one ink is black and the others are colored.

• Quadtone — creates a grayscale image that prints using four inks. In most cases, one ink is black and the others are colored.

The Type window displays the corresponding inks.

4 Select an ink color from the Type window.

5 Click the ink tone curve on the grid to create a node.

The node adjusts the percentage of color at that point on the curve.

6 Position the cursor over the node that you want to edit. A target icon appears when the node is in Edit mode.

7 Drag the node to adjust the curve.

To save inks for duotone conversion

1 In the Duotone dialog box, click the Save button.

2 From the Save In list box, choose the drive where you want to store the duotone file.

3 Double-click the folder in which you want to store the duotone file.

4 Type a name for the file in the File Name box.

5 Click the Save button.

To load inks for duotone conversion at- I In the Duotone dialog box, click the Load button.

2 From the Look In list box, choose the drive where the duotone file is stored.

3 Double-click the folder where the duotone file is stored, and click the filename.

4 Click the Open button.

To choose an ink color for duotone conversions

1 In the Duotone dialog box, double-click an ink color.

2 Choose a new color from one of the modes.

3 Click OK.

4 Click the tone curve line on the grid to create a node.

The node adjusts the percentage of color at that point on the curve.

5 Position the cursor over the node that you want to edit. A target icon appears when the node is in Edit mode.

6 Drag the node to adjust the curve.

To specify how Overprint colors display onscreen

1 In the Duotone dialog box, click the Overprint tab.

2 Enable the Use Overprint check box.

3 Double-click the color that you want to edit.

4 In the Select Color dialog box, choose a new color from one of the modes.

You can verify the original color and the new color in the Reference Color and New Color boxes at the top of the Select Color dialog box.

To edit the settings of a duotone image

1 Select the bitmap with the Pick tool.

2 Click Bitmaps, Color Transform, Edit Duotone.

• Enable the Show All box to display all of the ink tone curves on the grid at once.

• Click the Null button to return all ink tone curves to their default position on the grid.

Was this article helpful?

0 0

Post a comment