Canon MG5750 connected to mac with usb lead but wont connect

[sandymoo]

Hello , Im new to this printer. I  bought new inks and cleaned it up etc etc . Yesterday it worked fine but today it says the printer is not connected ? Ive tried printing emals and no luck , Ive tried printing photos and no joy .. am I missing a simple point ,it has paper and im NOT using wireless , ive switched it on and off again as well. 
thankyou 

[Patrick]

Hi sandymoo,

Please follow these steps:

1.  Please click on the Apple in the upper left hand corner and then click on System Preferences.

2.  In System Preferences, please click on Printers & Scanners.

3.  In the Printers window, on the left hand side, click on the Canon printer 1 time and then click [-] at the bottom to remove it.

4.  Repeat until all Canon MG5700s are removed.

5.  Once complete, please click on the [+] at the bottom and re-add your MG5700 series printer.

When the printer is reinstalled, please attempt to print.