Method and system for guiding a web of moving material
作者： Raymond A. Buisker , Andrew Kalnajs
DOI:
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摘要: A method and system for guiding a web of moving material is disclosed. The includes plurality variable light sources that can project onto the surface web. One source or combination be selected to web, wavelength selected. detector receives reflected from generates data signal in response received. controller used analyze determine position material. enables lateral and/or longitudinal various types webs efficiently effectively determined based upon line, edge, other mark disposed on
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