The HP OfficeJet Pro 8100 printer uses the CN045AN CN046AN CN047AN CN048AN Ink cartridges. Toner Refill Store's Ink Cartridges are 100% guaranteed to meet or exceed your expectations and surpass the print quality of the OEM (Original Equipment Manufacturer) HP OfficeJet Pro 8100. Our HP OfficeJet Pro 8100 high yield Ink Cartridges come with new reset chips and have a 'One Year 100% Satisfaction Guarantee'. The use of our premium compatible ink cartridges for the HP OfficeJet Pro 8100 does not void your printer's warranty.