Refilling instruction for HP Cartridges  51625A, 51649A , 51649G, C1816A (photo) The plastic cover must be remove to reveal the filling holes. Carefully pry it off with a thin metal blade, such as a thin flathead screwdriver. Or lay the cartridge on its side with the plastic cap off the edge of a table holding it firmly then break the seal by striking it with a blunt object. Important: Make certain... 

Printer ink is one of the most expensive things that you’ll run into when you set up your home office. You start out taking dozens of pictures with your new digital camera, download them onto your computer, print a few and suddenly… the print cartridge runs out of ink. If you follow this how-to guide and refill your print cartridge instead of buying a new one, you can save literally hundreds of...