Large, solid black areas and text over 36 point should use Rich Black to prevent the color from looking gray. Rich Black consists of 40% Cyan, 40% Magenta, 30% Yellow, 100% Black. For smaller text, we recommend using 100% Black only.
4 Color Blacks (Rich Blacks): If you have small, thin text below 36 point in your design, it is STRONGLY recommended that you do not use 4-color black. Although, using a 4-color black is recommended on larger areas, using 4-color or rich black on small areas will make your text blurry and at times, unreadable.
Why Does this Happen?: Process printing uses 4 primary color inks that overlay each other to provide the full color spectrum on the paper. Although precise, the registration of the 4 color inks will shift during the printing process, If you use all 4 colors to create your black, they will not line-up precisely, creating a blurring effect. (See Illustration on the right)
This is especially evident on small text, or small lines, 12pt. and smaller. In order to fix this, we require that all small text be created 100% Black Only, which is 0% Cyan (C), 0% Magenta (M), 0% Yellow (Y), 100% Black (K). This way, as the primary colors shift, it will not affect the black color.