Marcus Chen
Marcus Chen Senior Content Strategist at 4OVER4.COM
Question

What does "4/0", "4/1", or "4/4" actually mean?

Answer

The two numbers describe how many ink colors print on each side of a piece. The first number is the front, the second is the back, and 4 means full-color CMYK.

NotationFrontBack
4/0Full-color CMYKNo ink
4/1Full-color CMYKOne ink color
4/4Full-color CMYKFull-color CMYK
  • 4/0, or 4over0, means the front has the four CMYK ink colors and the back has no ink at all.
  • The 4 refers to the four process inks: cyan, magenta, yellow, and black.

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