Gray Component Replacement, abbreviated GCR, is a technique for replacing gray tones otherwise made from yellow, cyan and magenta separations instead with black ink.
Advantages of GCR include:
- Black ink can be less costly than CMY inks.
- Resulting output is less susceptible to changes and shifts since you are not so heavily relying on the balance as much C, M, and Y.
- Brighter colors can sometimes be obtained on lower grade papers through the use of GCR.
Disadvantages of GCR include:
- GCR may reduce the ability to adjust some colors.
GCR is also termed "achromatic color removal."
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Gray Component Replacement (GCR)
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