My Epson wireless printer has lost its connection with imac - how do I reconnect?

My Epson wireless printer is not responding to the print command displaying the message "looking for printer/the printer is not connected" but the printer is on and the wireless connection working - any thoughts please on how to resolve? Thanks

I've found that once in a while this seems to randomly occur. It's happened to me in the last couple of days with my Brother printer. The only way I could get it working was to go through the palaver of setting up the wifi connection to the printer again, using the control panel on the printer to rejoin the network and re-inputting the password.
The connecting can be made easier if it and your router support WPS pairing. Select WPS pairing on the printer and if offers up an 8 digit number that you input in the wifi configuration page of your router.

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