Feel the need to warn you guys. Do not by this shit from http://www.laserdesigns.co.uk or any other site.
They will sell you chinese made shit. I have searched on the net and almost every ciss is made in China no matter what ever the site says it has developed by them selves. There is a few that has ther own.
Bought it and started to fill black and it leaked like a soll! This cost me about 30 euros or 45 dollars, give or take. This is how I solved it.
I had already taken the chips from the original cartridges and put them on the ones I bought. I peeled them of and taped them on the originals with some medical tape. Tthe original canon cartridge has a plastic foil on top. Underneath it there is a hole with a little plastic ball. see pictures..
Take a little screwdriver and hold it against the ball and punch it in and voila, there is a hole ( no need to drill as i did in the Magenta cartridge. thats why the plug is bigger) fill the cartridge with ink. I bought it from here http://www.druckerpatronentankstellen.de and it works very well indeed. take the rubber plugs from your useless Ciss, bought from above (http://www.laserdesigns.co.uk or any other place), plug the holes and insert in printer. Now your good to go. Start printing.
By the way this is my first time bying a ciss and first time refilling.