Early in grade-school you learn blue, red, and yellow are the primary colors that can be used to produce any other color. If you're curious enough, you later learn the primary colors are actually cyan, magenta, yellow and -- for practical purposes -- key (black).

My question is, what substances are used for each of these pigments and where are they found? Are they synthesized?

To be concrete, what substances are inside the in CMYK inks found in desktop inkjet printers?

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    $\begingroup$ Printing ink is a pretty expensive industry, i don't think such kinds of information will be easily available. $\endgroup$ – Sujith Sizon Dec 6 '15 at 14:58
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    $\begingroup$ Yes, that's probably true. Now I feel too self conscious to post my other question: "What's the difference between the Pepsi and Coke recipes?" :P $\endgroup$ – Dan Kowalczyk Dec 6 '15 at 16:31
  • $\begingroup$ Well you could always reverse engineer your subject (inks/drinks) and find it out for yourself. $\endgroup$ – Sujith Sizon Dec 6 '15 at 18:14
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    $\begingroup$ @SujithSizon reverse engineering must be done in secret, otherwise you can get a lot of troubles. But there is some info about components google.com/patents/US4818285 But it is not 20% compound A, 35% compound C... $\endgroup$ – XuMuK Mar 3 '16 at 9:17

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