Adobe Photoshop CC 2014 v.14.xx - Manual (Page 882)

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3. Click the color swatch of the ink combination that you want to adjust.
4. Select the desired color in the Color Picker, and click OK.
5. Repeat steps 3 and 4 until you are satisfied with the ink combination. Then click OK.
Saving and loading duotone settings
Use the Save button in the Duotone Options dialog box to save a set of duotone curves, ink settings, and overprint colors. Use the Load button to
load a set of duotone curves, ink settings, and overprint colors. You can then apply these settings to other grayscale images.
Photoshop includes several sample sets of duotone, tritone, and quadtone curves. These sets include some commonly used curves and colors.
Use these sets as starting points when you create your own combinations.
View the individual colors of a duotone image
Because duotones are single-channel images, your adjustments to individual printing inks are displayed as part of the final composite image.
In some cases, you may want to view the individual “printing plates” to see how the individual colors will separate when printed (as you can with
CMYK images).
1. After specifying your ink colors, choose Image > Mode > Multichannel.
The image is converted to Multichannel mode, with each channel represented as a spot color channel. The contents of each spot channel
accurately reflect the duotone settings, but the on-screen composite preview may not be as accurate as the preview in Duotone mode.
If you make any changes to the image in Multichannel mode, you can’t revert to the original duotone state (unless you can access the
duotone state in the History panel). To adjust the distribution of ink and view its effect on the individual printing plates, make the adjustments
in the Duotone Curves dialog box before converting to Multichannel mode.
2. Select the channel you want to examine in the Channels panel.
3. Choose Edit > Undo Multichannel to revert to Duotone mode.
Printing duotones
When creating duotones, keep in mind that both the order in which the inks are printed and the screen angles you use have a significant effect on
the final output. (If needed, change the halftone screen angles on the printer’s RIP.)
You do not have to convert duotone images to CMYK to print separations—simply choose Separations from the Profile pop-up menu in the Color
Managementsection of the Print dialog box (for setting printer options). Converting to CMYK mode converts any custom colors to their CMYK
equivalents.
Exporting duotone images to other applications
To export a duotone image to a page-layout application, you must first save the image in EPS or PDF format. (However, if the image contains spot
channels, convert it to Multichannel mode and save it in DCS 2.0 format.) Remember to name custom colors using the appropriate suffix so that
the importing application can recognize them. Otherwise, the application may not print the colors correctly, or it may not print the image at all.
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