HP Sprocket 3x4 Instant Photo Printer & Zink Paper PackInstantly Capture and Share Memories with the HP Sprocket 3x4 Photo Printer The HP Sprocket 3x4 Instant Photo Printer allows you to wirelessly print vibrant 3. 5x4. 25 photos directly from your iOS and Android devices. Paired with the HP Sprocket Zink Sticky Backed Photo Paper, this bundle lets you personalize and share your favorite moments with ease. Compact and portable, the Sprocket 3x4 is perfect for on the go printing without the need for ink