Best Way to Image a Protected CD?

[LaBBa]

I'm trying to understand somthing about CD protection.

If i copy a CD ( that it is protected in some way ) can't i just read every chunk of data in the CD (like blindWrite does) without care if it an Error sector or not because i'm assuming that all data i read is correct.
even if i do this kind of Image to the CD there is (some how ) data missing
can some one please explaing me how can i make a perfect CD Image?

Regards,
LaBBa