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The 7640 is completely wireless (it does include an Ethernet jack on the back), can be set up completely from your smartphone, contains its own wifi network, includes NFC, and can order its own ink via HP Instant Ink. For me, the main difference is that the ENVY line produces lab-quality prints, whereas the OfficeJet doesn't make that claim.
Sorry, there was a problem. Please try again later.I have recently purchased the 7640 and am very pleased. Easy to use and connect. Great quality of print.
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