Preserving Duotone Colors out of Photoshop
Hello,
This article will teach you how to setup duotones (tritones, quadtones, etc) in Photoshop so that when they are placed into other programs, they will preserve the correct Pantone colors you’ve selected.
First:
You will need to start with a grayscale image. Either Convert a RGB or CMYK photo to grayscale or your image can already be in grayscale.
Next:
You will need to change the image from grayscale to a Duotone.
Once the image is a monotone, from the drop down box I selected Duotone, then I adjusted my curves once the inks I wanted were selected. (Pantone 185 and Yellow)
(Here is a sample of my duotone)
Next:
Now that you are done changing the inks in your image, if you were to save your file as a .tif file or .jpg your ink information wouldn’t be preserved. You still need to go into the print menu and make some changes to the screen dots and the way the inks will be printed.
You’ll want to go to the File Menu - Then the Print Option.
From the print dialog box you’ll want to select “Output” from the drop down box in the upper right hand corner.
Once Output is selected, you’ll have to click on the “Screen” button in the lower right hand corner.
After the screen menu loads,
You’ll want to un-check the “Use Printer’s Default Screen”. Then you can select the Ink’s you used in your Duotone.
For, Ink 1 (Pantone 185c) I want to use a line screen of 150, and I want the dot to be the same angle as a black dot so I have changed the Angle to 45 degrees. I have also selected a round dot and made sure the check box for “Use Accurate Screens” and “Use Same Shape for All Inks” are checked. You want to make sure whatever ink you change to the Black dot (45 degree angle), that it is the dominate color of your layout. Or if you are using Pantone 185 as text for the piece you would want it to have the same screen angle as a black dot.
For, Ink 2 (Pantone Yellow) I want to use a line screen of 150, and I want the dot to be the same angle as a cyan dot so I have changed the Angle to 15 degrees. I have also selected a round dot and made sure the check box for “Use Accurate Screens” and “Use Same Shape for All Inks” are checked.
Click on “OK”, then once your back to the Print Dialog Box, click on “Done”
Saving the file:
Lastly, you’ll want to save your image so that it can be placed into another program and preserve the ink color information. I use a photoshop .pdf file for this step.
First you’ll want to go to “File” and choose “Save As”
From the “Format” drop down, I select Photoshop PDF.
And then name my file:
Here is a sample of the Duotone Image:
Last but not least:
Here are screen shots from the Output Preview showing the Pantone Yellow and Pantone 185 Inks are only being used:
The Red:
The Yellow:




