[Sivran]

I know about printers. However -

and even your CD burner all encode the products they produce.

Cite sources.

CD-R/DVD-R media is detectable not because of some secret data being written to the disc, but because of the very nature of the media. Dye-based recordable media is different from "pressed" manufactured media and is detectable as such.

http://www.advance.mb.ca/hiworks/cd_r.htm
http://www.megalodon.com/disc-manufacturing.html
http://www.cdrfaq.org/faq02.html#S2-4