To optimize the protection provided, the guard forms a flat shield covering the exterior side of the nozzles wherein the shield has an array of passages big enough to allow {HEAD ~ the ejection} of {TAIL ~ ink droplets} but small enough to prevent inadvertent contact or the ingress of most dust particles 
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To optimize the protection provided , the guard forms a flat shield covering the exterior side of the nozzles wherein the shield has an array of passages big enough to allow { HEAD ~ the ejection } of { TAIL ~ ink droplets } but small enough to prevent inadvertent contact or the ingress of most dust particles
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH