US Patent 7832818 Inkjet pen with proximity interconnect

An inkjet pen includes a print head comprising a substrate, a plurality of inkjet nozzles formed into the substrate, integrated circuitry on the substrate for driving the inkjet nozzles, and a proximity interconnect transceiver formed into the substrate for receiving print data. An interconnect chip having a counterpart proximity interconnect transceiver passes the print data to the print head using capacitive coupling.