Bar-code reader with reading zone indicator

Registers – Coded record sensors – Particular sensor structure


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235470, 235467, G06K 710




A bar-code reader for reading bar codes on articles or commodities in supermarkets or retail stores has a scanning unit mounted on a vertically movable support post assembly and including a scanning system which emits a scanning light beam and detects light reflected from a bar code. The bar-code reader includes various indicating members, such as an indicator rod, an indicator ring, an arrow mark, a pattern mark, and a colored sheet, for indicating to the operator a direction, a position, and an area or zone in which to pass an article with a bar code in order for the bar code to be successully read by the scanning system.

patent: 4235504 (1980-11-01), Ikeda et al.
patent: 4678288 (1987-07-01), Lonsdale et al.
patent: 4939356 (1990-07-01), Rando et al.
patent: 4960985 (1990-10-01), Knowles


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