A wiper blade cleaning system has two polyurethane wiping blades of unequal lengths, but which are otherwise identical. The blades are releasably mounted in slots on a planar surface of a fixed structural member. The mounted blades are parallel and spaced apart a predetermined distance. The positioning...http://www.google.de/patents/US5396271?utm_source=gb-gplus-sharePatent US5396271 - Wiper blade cleaning system for non-coplanar nozzle faces of ink jet printheads
