Canon iP6700D no longer supported
I am running macOS Sierra 10.12.6 on my 2011 iMac.
My Canon iP6700D was working fine (I printed an A4 colour photograph on Saturday).
Today it says that "The printer is not connected", but it is (via a USB cable).
Imagine my surprise (and annoyance) on finding out that Canon have not supported my printer since El Capitan.
Any help would be much appreciated.
Thanks
Tony
iMac (27-inch Mid 2011), macOS Sierra (10.12.6)