Our compatible, 412ml, HP C6119A, bulk, fast dry ink, mailing systems with a remanufactured printhead and your choice of compatible fast dry black, or spot color, ink are designed for use on an address printer utilizing HP thermal inkjet technology. All bulk ink performs well on porous and coated paper, but not on aqueous, high gloss, paper. A drier is recommended for these pigmented and waterbased inks. Our customers tell us our fast dry black ink is darker than HP 45 ink and that this black ink has properties similar to a versatile ink. Although it would be impossible to list all the mail equipment this, bulk, address printer ink performs best on, a partial list might inlude: Astro Machine - Astrojet II Plus, Astrojet III, Astrojet III Plus; Hasler HJPAS; Kirk Rudy W'Inkjets; MCS 600; Secap V-Jet and Secap Jet 1 equipment. To insure optimum performance, please remember to reclip all cartridge heads when your system is not in use. As with any fast dry ink, if a clog happens, it is suggested that a lint-free cloth and alcohol be used to clean your cartridge heads. The use of paper towels is strictly prohibited as the lint from the paper towel will aid in clogging the cartridge head and will void your warranty on the product * Purchase compatible HP c6119a ink systems here for terrific savings on HP black, or HP spot color, fast drying ink and save money without sacrificing quality * One year warranty * Free UPS Ground * US SALES ONLY - IN STOCK