Even not airprint printer also can be printed from ipad and iphone

Printing from iPad and iPhone and ALL printers without APPs

If you need to print from your iPad or iPhone, how can you do now ?

1. Installing third party APPs ---- BUT it's so annoying you 
    need to open the APP while you wnat to print and 
    CANNOT print with some other APPs. In addition, would 
    you really like to install all third party APPs.( HP, 
    Lexmark, Epson...)

2. To Buy a Airprint Printer which support AirPrint for
    iPad and iPhone Print --- It's a good idea excepting 
    waste money, if you already have a old printer.

3. Copy the file to PC, then print from PC --- It's easy BUT 
    it's will speed some time.

Is not there a better way to do ?

Yes, there is one - It's O'Print which you can  

1. printing from your iPad, iPhone and iPod touch without APPs and support ALL Printers. 

2. Print to file with PDF format without printer and paper, 
    save it in PC and print it anytime you want to print.

3. Print to Sync dropbox, it is amazing and convenience.

4. Security Print (Set a password for each printer and 
   encoding print data )

5. Easily setup and operate (iOS native print)

So, would you like to read more about O'Print, 
Let's Clikc Here
 

Non-airprint printers also can be printed from iPad and iPhone

 

When Apple first included its AirPrint printing utility—which allows printing from an iPhone or iPad to a compatible printer on the same Wi-Fi network—in an iOS upgrade in late 2010, only a handful of HP printers were supported. Fortunately, AirPrint compatibility has greatly expanded, and many of the new Wi-Fi-enabled printers we test come with AirPrint ready to go. However, if you already have old printers which you are used to a long time, you should have another best choice -

.

AirPrint Printers Basics

AirPrint Printers Basics

AirPrint enables instant printing from iPad, iPhone, iPod touch, and Mac without the need to install drivers or download software. Simply select an AirPrint printer and print. It's that simple.

AirPrint

AirPrint is an Apple technology that lets you create full-quality printed output without the need to download or install drivers. AirPrint is built in to many printer models from most popular printer manufacturers. Just select an AirPrint printer on your local network and print from your favorite iOS or OS X app.

Important : A Wi-Fi capable AirPrint printer must be connected to the same home Wi-Fi network as the iOS device or Mac.

Reference: How all printers can be Airprint Printers

If you are unable to print, or if you see the message "No AirPrint Printers Found"

Verify that the printer:

1. Has power and is turned on. If it has power, turn the printer off and then on again to see if that resolves the issue.
2. Is connected to the same Wi-Fi network as the iOS device.
3. Has the latest firmware version installed.
4. Has paper with enough ink or toner installed.
5. Is free of any errors displayed on the printer's control panel.

If necessary, consult the printer documentation or contact the printer vendor for help with the above steps.

Notes:

• AirPrint printers connected to the USB port of the Apple AirPort Base Station or Time Capsules are not supported with AirPrint. 
• Some Wi-Fi AirPrint printers can take several minutes to join a Wi-Fi network after being turned on. Ensure that the AirPrint printer is connected to the Wi-Fi network before attempting to print.

 Reference: How all printers can be Airprint Printers