Reman.
02 (C8721WN) Black Cartridge compatible with:
PhotoSmart 3110, 3210, 3310, 8250, C5100, C5140, C5150, C5180, C6100, C6150, C6180, C6200, C6240, C6250, C6280, C7180, C7250, C7275, C7280, C7283, C7288, C8180, D6160, D7100, D7145, D7155, D7160, D7300, D7345, D7355, D7360, D7460
The use of compatible supplies does not void your printer warranty.