In a inkjet print cartridge ink flows from the reservoir around the edge of the silicon substrate before being ejected out of the nozzles. During operation, warm thermal boundary layers of ink form adjacent the substrate and dissolved gases in the thermal boundary layer of the ink form the bubbles. If...http://www.google.de/patents/US5909231?utm_source=gb-gplus-sharePatent US5909231 - Gas flush to eliminate residual bubbles
