AirPrint is a major feature of the iOS 4.2. But it is limited to certain "AirPrint enabled" models of HP, Canon, Brother, Epson and Lexmark printers.
Now Windows users can use AirPrint with any printer on the same Wi-Fi network as their iPhone, iPod or iPad.
Prerequisites: 1. Make sure you have iTunes and Bonjour Printer Services installed.
2. Make sure the printer is set up as shared printer on your local PC.
3. Make sure you have full administrator privileges to enable/disable services on your PC.
Steps to enable AirPrint on Windows 7/Vista/XP: 1. If you have 64-bit Windows OS, go to C:\Program Files (x86) and create a new folder called AirPrint as shown in the screenshot below:
OR
If you have 32-bit Windows OS, go to C:\Program Files and create a new folder called AirPrint as shown in the screenshot below:
2. Download AirPrint.zip from here and unzip it in the AirPrint folder you created in the above steps.
3. Go to Run and type "cmd" to open Command Prompt as shown in the screenshot below:
4. Now use the following set of commands respective to your OS version:
Notification: If AirPrint service has already been installed on your computer and is still in the list of services you have to delete it first by typing in:
5. As soon as you will start the AirPrint service, Windows Firewall will prompt you allow or deny AirPrint features to be shared over networks. Click on Allow access button.
6. That's it. Now open any document or email on your device with iOS 4.2 or later installed and click on the Print option to print the document wirelessly over a WiFi connection.