Review on HP 920XL Yellow Ink Cartridge - Compatible with HP OfficeJet 6000, 6500, 7000, 7500 (CD974AN) by James Duffield

Separate ink cartridges for each of the different colors may seem more expensive than just one black and one color cartridge, but if you use up all the cartridges of the same color then all the ink needs to be discarded , while in this system you only replace the magenta. The output is great, but watch out for low ink messages. If you get the first 2, you're good. If you get the third one, you really need to replace it to avoid damaging the printheads. Another thing to remember is to set the printer to greyscale, otherwise it will produce "rich blacks" and absorb other colors. , especially cyan (blue).