Here's how to find the driver version for any printer installed on your Mac.
Apple Icon > System Preferences
Locate and DOUBLE CLICK on Printers & Scanners
SINGLE CLICK on your printer
Click on Options and Supplies
Read the Driver Version
If you see a single digit driver version like 1.0 or 2.0, this is an indication that the AirPrint driver is applied to your printer.
Printer drivers from Epson, Canon, and HP typically have two digital, such as 11 or 18.