I need MAGENTA

I can answer this! There's no other way to say it: it's a scam. Printer companies force a printer to use a small amount of ink even in pure black color. This forces you to eventually have to buy more ink for around $50 - even though they only cost pennies to make. Further, you're not actually out of ink. You're just "low" and therefore need to get more. It's like your car not driving if it has less than half a tank - you have plenty of gas, but they want to scam you into buying more. So even if you have 100% black ink, if you have 40% magneta ink, then they will refuse to print anything until you go spend money on an overpriced product.