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Dual Laser Scanner for Enhancing Readability of Specularly Reflecting Labels

IP.com Disclosure Number: IPCOM000046098D
Original Publication Date: 1983-May-01
Included in the Prior Art Database: 2005-Feb-07

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Related People

Dickson, LD Woodland, LJ [+details]


To improve the readability of specularly-reflecting bar code labels without degrading the readability of other labels, it is suggested that a checkout scanner use two solid-state lasers modulated at different frequencies and two detectors, only one of which would be equipped with a polarizing filter.