Eating catalogs

My baby is currently having a ball messing around with the little catalog thingy that came in the mail today. Ripping the pages, swinging it around, crumpling it up, and, of course, eating it. His face is now covered in ink from the combination of  his drool and the catalog pages. It just made me wonder, are the pages non-toxic here? I am a bit surprised at how the ink has run.

I hope so because Ethan eats those as well and anything else made of paper or cardboard but I can't say I have ever noticed the ink running.

Copious amounts of teething drool didn't help, I think.