But HP does list some printers which can be upgraded via a firmware update to eliminate the block on third-party ink.Įven those, however, fall into two categories: printers whose dynamic security feature can be disabled, and printers whose dynamic security feature is permanent. HP doesn’t make clear which printers use the dynamic security feature, which is what Reddit users became infuriated about - HP apparently had permitted the use of third-party ink on the OfficeJet 7740 and the OfficeJet Pro 6970, then cracked down. HP printers that use “dynamic security” to block third-party ink cartridges “The purpose of dynamic security feature is to protect HP’s innovations and intellectual property, maintain the integrity of our printing systems, ensure the best customer printing experience, and protect customers from counterfeit and third-party ink cartridges that do not contain an original HP security chip and infringe HP’s intellectual property,” it says.
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