What type of label surface is this?

I bought this 50-pc cakebox of Taiyo Yuden TYG02 when I went on a business trip to Japan a week ago. My cd marker pen won’t write on it so I tried using my R230 inkjet printer. The text quality looks pretty good but photos don’t turn out very well. They also smudge if not left to dry. Can you guys help me identify what kind of surface this is? Is it safe to use inkjet on this media? Thanks