The current disclosure is directed to a multiple beam control unit for generating independent control signals each of which is used as a beam activation signal as well as a beam detection confirmation signal for a corresponding one of the multiple beams so as to accurately synchronize each of the beams....http://www.google.fr/patents/US5943086?utm_source=gb-gplus-shareBrevet US5943086 - Multiple beam independent activation system and method for simultaneous image formation
Multiple beam independent activation system and method for simultaneous ...
