Pritop cartridge sponge replaces Kit for canon is Simple to install with affordable prices. The consumers can install the cartridge by themselves at home. The design principle of pritop cartridge sponge replace kit is the same as of the original cartridge. It could prolong the print head life and with easy replacement. It saves around 95% of the printing costs. It is one of the most suitable alternative sponge refill/replace kit for Canon printer cartridge available in the market. Our kit can be used in various canon printer model numbers. pritop is the first seller who is going to sell this product in Indian market. User guide:- Please make sure that the nozzle (from where the ink is discharged) is working properly before installing the smart cartridge. • Take out the original cartridge.• Turn the printer on. When you open the front cover, the cartridge holder will automatically change its position.• Press down the cartridge slightly, then, remove the cartridge. Cartridge Installation1) Wrap the nozzle (from where the ink is discharged) with tissue. Then, use a knife to cut down the corner of cartridge cover, then, gently put the cover off. 2) Use a knife to trim the rough corners and inner and outer edges of the cartridge. 3) If the cartridge edges are not trimmed properly, then it would be difficult to place the cartridge on its proper position, and it will affect the printing quality too. 4) Remove the sponge from the cartridge. 5) Take out the pritop sponge replaces kit. Install each cartridge in the corresponding cartridge container, press down firmly. 6) Remove the seal of the cartridge. 7) Place the cartridge into the printer. Please do watch our video also:- https://www.youtube.com/watch?v=FeFXDEJQDbk if you want to use very old cartridge which you have not use for a long time then please do this video method. https://www.youtube.com/watch?v=u31pIJ9GtWk&feature=youtu.be