A positive stop capping system is provided for sealing an inkjet printhead in an inkjet printing mechanism during periods of printing inactivity. A positive stop or brace is provided in a cavity defined under a cap cover skin, with the skin also forming a sealing lip which surrounds ink-ejecting nozzles...http://www.google.com.au/patents/US6623098?utm_source=gb-gplus-sharePatent US6623098 - Positive stop capping system for inkjet printheads
