Browse Prior Art Database

Cross Scanner for Bar Coding Labels

IP.com Disclosure Number: IPCOM000079479D
Original Publication Date: 1973-Jul-01
Included in the Prior Art Database: 2005-Feb-26
Document File: 2 page(s) / 54K

Publishing Venue

IBM

Related People

Nassimbene, EG: AUTHOR

Abstract

This scanning arrangement is fully effective for any random orientation of a bar-coding label as it passes the scanning area.

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Cross Scanner for Bar Coding Labels

This scanning arrangement is fully effective for any random orientation of a bar-coding label as it passes the scanning area.

Merchandise items 12, 14 have bar-coded labels 16, 18 attached in a conventional manner, preferably on the bottom only, with no requirement for any particular placement or orientation with respect to the package. The height of the bars on the label must be greater than the length of each bar group, to insure one complete resolution on a passthrough.

The items are brought to a check-out stand 20 having a counter top 22, in which an opaque faceplate 24 is inset for permitting a clerk to slide the items 12, 14 easily over the faceplate 24. Two optically transparent slits 26, 28 are arranged orthagonally in the faceplate 24 to form an open X.

Beneath the faceplate 24 is a laser beam light source 30, a rotating multiplane mirror 32, driven by a motor 34, and a pair of fixed plane mirrors 36,
38. These components are arranged for continually scanning a beam of light sequentially along the slits 26 and 28. Alternately, the fixed plane mirrors are eliminated by configuring the surface of the facets of the rotating mirror for effecting the same scanning. Two photocells, not shown, are arranged within the stand 20 for receiving light reflected from any surface passing over the individual slits 26, 28. The photocells are connected to logical circuitry having gating circuits coupled to the rotating mirror 32 by conv...