thanks for your comment. I am still looking for more information but it's still very blurry. If anyone can help, it would be great.
I heard from a rotogravure press owner that the quality produced by flexo is now as good as the quality produced by rotogravure. It's true that cost of cylinders for gravure is going down but I don't think it will ever compete. So what is the advantages of gravure? Speed? Consistancy? How about the operating cost?