C6578A No 78 Tri-Colour Cartridge 38ml Deskjet 920C/930C/940C/ 950C/959/960C/970Cxi/980 Cxi/990CXI/990CM/995C/1220C/3820/3822/Officejet G55/85/ 95/V40/45/Photosmart P1000/1100/1215/1218 Colour Copier 290/K60/80/PSC750/ PSC950/5110. Page life - 900. For an exceptional level of print clarity, the HP No.78 Inkjet Cartridge is the perfect solution. Making sure that all of your documents are printed with the very highest level of quality, this is an easy product for anybody to use. HP ink is designed to produce a wide variety of hue and shade, allowing you to print a range of tonally complex images without having to worry about visibility or definition.