Reman.
60 (CC640WN) Black Cartridge compatible with:
Deskjet D1660, D2530, D2545, D2560, D2660, D2680, D5560, F2430, F2440, F2480, F4210, F4235, F4240, F4280, F4435, F4440, F4480, F4580
ENVY 100, 110, 111, 114, 120, 121
Photosmart C4635, C4640, C4650, C4680, C4740, C4750, C4780, C4795 e-All-in-One.
The use of compatible supplies does not void your printer warranty.