In keeping with the "Kodak Hero 9.1 All-in-One" printers I acquired virtually interchangeable in their handling original Kodak Ink Cartridge "10B", which is exclusively responsible for the black print. Simply the orange lock strap away because removed the empty ink cartridge and inserted into the slot provided inside the printer by clicking the new mechanism. No hassles with refillable ink cartridges experiments or by using alternative providers. Thus, in all respects a clean affair.
Whether the capacity of the cartridge - as specified by Kodak - enough for about 425 printed pages with little loss of quality, is probably connected with the individually preferred printing preferences. My experience with the "Hero 9.1", however, shows that is only achieved on the highest quality printing stage a very good result. But counted, whether it be because the approximately 425 pages, I have not (and did not plan to ... ;-).