"AirPrint is a mobile printing solution included with the Apple iOS v4.2 and later mobile operating systems. iPad, iPhone, and iPod touch users "
I don't see the printer model so I'd go get the drivers from Epson.com and try again. My bet is this is not AirPrint at all.
I have two laptops. Both are Dell devices. One is an older 32-bit machine and the other is a newer 64-bit machine which I recently purchased. My older laptop will print just fine using AirPrint to my wireless Epson printer. The newer laptop will not. I've tried everything I can think of to enable the newer one to print but without success.
I'm not extremely computer-literate but I need to know how I can go about enabling AirPrint on this newer laptop. It's a Dell Latitude e6420 running Win7. Can anyone help me, please?

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