My iPad cannot find my HP AirPrint printer HP 3050 . We are on the same network

I have recently converted all our family devices to Apple. My Mini-Mac has found my printer as well as my Mac Air. The only device that has not is my wife's iPAD. She is on the same home network as my other systems, but no results. Software updates are current on all. The local Apple store said that I am pressing the right Find Printer tab. What else can I adjust to link up here?