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专利名称：Fiber optic sensing apparatus for sensing
the relative position of ink droplets or otherobjects of similar size in flight
发明人：Crean, Peter A.,Spencer, Paul R.申请号：EP80300822.6申请日：19800319公开号：EP0016628A2公开日：19801001
专利附图：
摘要：Optical fibers (2, 3 and 4) are used to sense fluid ink drops along the x, y and zaxis of an orthogonal coordinate system. A drop sensing zone is defined in the narrow
space between the faces of a single input fiber and two output fibers. An LED 58 infraredlight source is coupled to a remote end of the input fiber. Infrared sensitive photodiodes61 are coupled to the remote ends of each output fiber. The photodiodes are in turncoupled to a differential amplifier 69 whose output represents a displacement error forthe x and y axis and represents a time reference for the z axis for the case where thedrop flight path is along the z axis. A plurality of sensors are disclosed in an ink recordingsystem having a plurality of nozzles 33 and in an ink recording system having an inkgenerator traversing the length of a high speed rotating drum 100.
申请人：XEROX CORPORATION
地址：Xerox Square - 020 Rochester New York 144 US
国籍：US
代理机构：Weatherald, Keith Baynes
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