The HP OfficeJet 6100 printer uses the CN053AN, CN054AN, CN055AN, CN056AN 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 6100. Our HP OfficeJet 6100 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 6100 does not void your printer's warranty.