What does the term 'rich black' refer to in printing, and what is a common safe CMYK mix used to achieve it on press-ready material?

What does the term 'rich black' refer to in printing, and what is a common safe CMYK mix used to achieve it on press-ready material?

• A. Rich black is produced by using only black ink in a dense mix.
• B. Rich black uses multiple inks to achieve a deeper black; a common safe mix is 60C, 40M, 40Y, 100K.
• C. Rich black is achieved by adding white underprint to black.
• D. Rich black refers to using a separate color coating for depth.

Answer: (B)

Rich black means using cyan, magenta, yellow, and black inks together to create a deeper, more saturated black than black ink alone. On press-ready material, this approach gives a richer, denser black that reads as true black across different papers and inks, rather than a flat or dull black from pure black ink. A common safe blend to achieve this is 60% cyan, 40% magenta, 40% yellow, and 100% black. This combination builds depth without overloading any single ink, helping ensure good ink laydown, better consistency across stock, and reduced risk of registration problems. In practice, printers tailor the mix for the specific stock and press, but this ratio is a reliable starting point for a robust, press-ready rich black.

Rich black means using cyan, magenta, yellow, and black inks together to create a deeper, more saturated black than black ink alone. On press-ready material, this approach gives a richer, denser black that reads as true black across different papers and inks, rather than a flat or dull black from pure black ink.

A common safe blend to achieve this is 60% cyan, 40% magenta, 40% yellow, and 100% black. This combination builds depth without overloading any single ink, helping ensure good ink laydown, better consistency across stock, and reduced risk of registration problems. In practice, printers tailor the mix for the specific stock and press, but this ratio is a reliable starting point for a robust, press-ready rich black.