Fluid ejection head assemblies, fluid ejection devices, and methods for improving fluid sealing of fluid ejection head assemblies. One such fluid ejection head assembly includes a substrate cavity and a substantially planar surface surrounding the substrate cavity. The substantially planar surface contains...http://www.google.fr/patents/US7600850?utm_source=gb-gplus-shareBrevet US7600850 - Internal vent channel in ejection head assemblies and methods relating thereto
Internal vent channel in ejection head assemblies and methods relating thereto
