Please excuse my long-windedness. My first post ever on an electronic topic proving fruitless with a Google search. I am also a computer printer newbie.

I leave my portable Canon iP110 inkjet printer switched on all the time. Occasionally I forget to switch it off before unplugging the power lead. I am aware this is a no-no, as it may cause drying or clogging of the print head (Canon stricture). 

My query is what happens after a mains power failure to an inkjet printer's print head?

Mains power failures do happen occasionally.

In this situation, does a print head similarly dry or clog as above? I do not fancy having the printer switched off when not in use. My experience with things electronic is that leaving them switched on prolongs life.

Thank you