need a printer for my iMac

Most any new printer that supports AirPrint will work with your new iMac.

for the long list, see > About AirPrint - Apple Support

We are partial to Epson Printers. Our latest Epson Eco-Tank has printed thousands of Doc's and hundreds of quality Photo's for a lot less $'s than our previous Epson cartridge model.

Hi there!

The Apple Store sells printers & scanners: Printers & Scanners - All Accessories - Apple.

From the selection offered, the HP ENVY Inspire 7220e All-in-One Wireless Printer - Apple might be a good choice.

To setup the printer with your Mac, take a look at Connect an AirPrint printer to a Wi-Fi network and Add a printer to your printer list so you can use it on Mac.

Jack

I got an Epson EcoTank 2800 / 2803 recently, very happy.

Shop around, I paid $199…

Most any Brother All in one...

https://www.brother-usa.com/home/printers-fax/all-in-one#sort=relevancy

unless you're really into printing photos then if it was me then I would get a laserprinter / scanner

laser toner is less expensive and does not dry out if not used like ink does