This ink cartridge contains dye based black ink for use with the LX810 Color Label Printer. 53377 Please note: There are TWO types of black ink cartridges available for the LX810 Color Label Printer: (1) dye based black for printing on virtually all types of gloss and semi gloss label and tag stocks, and (2) pigment based black for superior bar code scanning and a generally higher level of water/UV resistance. Pigment based black does not work on all brands of gloss label stock. Dye based color ink cartridges are suitable for use on all types of media except some matte finish plain papers label stocks. Customer testing is highly recommended before purchasing a large amount of stock or ink cartridges.