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Most of the HP printers uses driverless technologies such as AirPrint or IPP, which don't require additional drivers on your Mac. Since you have already added the printer in the Mac Printers & Scanner, I'm sure you wouldn't have any issues printing and scanning. However, HP Easy Start also install the printer essential software along with the printer driver. The HP printer essential software for Mac contains HP Easy Scan and HP Utility. You may download and install HP Easy Scan and HP Utility from the links below:
HP Printer Utility for Mac OS X
Instruction on how to use HP Easy Scan can be found here.
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