Hello
Can anybody help me out with my printer please before it is thrown out of the window?

It is a Canon PIXMA MP140
It won't scan because it has no colour ink cartridge... it has a black ink cartridge but apparently that wont do

I don't want to print ( at the minute anyway, not that I can now, I've tried as it refuses! )

I can't even press any buttons on the printer/scanner to fix it as it stuck on flashing E 5 at me

Do I really have to go out and buy a 20 quid cartridge or is there another way around it?