About the "AZO" logo:
I bought a 50 disc pack. There is a small "AZO" logo (It looks like "AZO", but the "O" is an image of a disc) at the lower left-hand corner of the paper that is that disc pack's cover.
However, the discs don't have any kind of "AZO" logo whatsoever. They have "GH007026" printed on the inner hub (Printed as "mirror writing"). That string identifies the disc as a Taiyo Yuden 16x DVD-R (For Verbatim, with AZO that is).