HP's new line of OfficeJet Pro printers are about the best HP has ever released. The release of the new OfficeJet Pro K5400, K5400dt, K5400dtn, K850 series fixed many of the problems that plagued the old K550 series. The new OfficeJet L7580, L7680 and L7780 all-in-one printers have it all and they are priced right. We support both series with an Auto Refill System or Our Clear No Sponge Easy Fill Cartridges. Our system or the Easy Fill Cartridges use our New Auto Reset Chip. There is no need to use a manual re-setter. Save over 80% of your printing costs with any one of our refill systems.