A system for detecting and damping vibrations in printer components, mechanical devices, buildings, or large structures has a plurality of light beam detectors for generating signals corresponding to a reference light beam position. The light beam detectors are partially transparent to allow passage...http://www.google.es/patents/US6055391?utm_source=gb-gplus-sharePatente US6055391 - Vibration detection and control system for printers
Vibration detection and control system for printers
