Upside down the cartridge

I am using internet at my dad's place, you have no idea that the internet here is so slow. He's still using the Dial up! Oh yeah I wonder when my dad's going to change another ISP.

About my dad's printer, I found out why he can't use the printer to print. He placed the black cartridge facing upside down. I am sure you can't print at all, it's so obvious that the cartridge has been place upside down.

After I placed it back to the right position, I tried to print and his Canon printer is back to work again! Hooray, thumbs up for me for fixing the printer. Well, its the cartridge which was misplace if its something else I might not know how to fix it.