Not sure if it is due to the amount of ink in these cartridges or in my printer but the ink comes out of the cartridges very quickly although I never print something else for black and white copies. Even the black ink disappears too quickly. I print less than 5 pages a month and most of those are a lot less than full pages. The reds, blues and yellows are never used, but the ink runs out about every 3-4 months. I think it's redundant.
H&BO TOPMAE Remanufactured Ink Cartridges Replacement for HP 61XL 61 XL β Envy 4500 5530 5535 Deskjet 1000 1056 1510 1512 1010 1055 OfficeJet 2620 4630 Printer (1 Black 1 Tri-Color) - Enhanced SEO
13 Review
Brother TN436BK Super High Yield Toner, Black - Retail Packaging
11 Review
Get Quality Prints with HP 78A/CE278D Toner-Cartridges for LaserJet Pro M1536 and MFP P1606
11 Review
Inkjet MFP HP Ink Tank Wireless 419, color, A4, black
52 Review