How to restructure CMYK curves uniformly. Great for Black and White Challenges
Nonstop Printing now has software to do this automatically yay! So this would only be for very specific circumstances.
When were printing black and white images, most of the time we try to convert the image to print black only. This provides a true black while sacrificing saturation and detail. Printing CMYK blacks with challenging images can cause color shifts due to the CMYK composition.
When the below image is printed, the final output will likely look more cyan/yellow/magenta since it's extraordinarily difficult to balance all the colors to produce a truly neutral color.
Here's how to fix the problem. You can download the file in the below link as an example.
After saving, you can open it back up in Photoshop to tweak as neccessary.