Track gauges for aligning and focussing the imagin

专利名称：Track gauges for aligning and focussing the

imaging system in a high speed documenthandling system

发明人：David J. Concannon,Gary B. Copenhaver,Clive

E. Catchpole

申请号：US07/532691申请日：19900604公开号：US05068912A公开日：19911126

摘要：A set of track gauges for use in aligning, focussing and normalizing an imagingsystem of a high speed document processor have been provided. Each of the gauges fitwithin a track (14) in front of the imaging system (10 or 12). The depth gauge (70) is usedto align the secondary light beam (26) with the primary light beam (22) so that alldocuments passing through the track (14) will be evenly illuminated from two pointssymmetrically offset from a line normal to the track (14). In addition, the depth gauge(70) is used to align a normally reflected beam (32) with a photodector array (56). Twodifferent trunnion mirrors (54 and 28) are adjusted in the two different alignmentoperations. The focussing guage (80) includes a set of black 87 and white 88 stripspositioned on a middle region 86. The white reference gauge (90) has a reflective whitecoating in its middle region 96. An oscilloscope (100, 210, 300, or 400) is used to displaythe intensity of reflected light (32) impinging on the photodector array (56) duringy alloptical alignment and focussing operations.

申请人：UNISYS CORP.

代理人：John J. McCormack,Mark T. Starr

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