The Wireless iPhone Photo Printer is no longer available, but I found this.
The iPhone Photo Printer
This is the compact printer with an on-board lightning dock that produces photo quality pictures as it charges an iPhone.
In as little as 55 seconds, it prints 300-dpi resolution 4″ x 6″ pictures in vibrant colors using a thermal ink ribbon and special paper that makes your photos waterproof, fingerprint-proof, and fade-resistant.
A free app lets users print photos from an iOS or Android smartphone or tablet, while a USB slot allows printing directly from memory cards, flash drives, and PictBridge-capable digital cameras.
Comes with removable 20-sheet capacity paper tray, ink ribbon cartridge, and 40 sheets of photo paper.
Compatible with iPhone 5 and iPod 5th generation and later, including X and 8. App is compatible with iOS 6.0 and Android 4.0 and later.
Check out the iPhone Photo Printer