Browse Prior Art Database

Profiled Bar Code

IP.com Disclosure Number: IPCOM000081382D
Original Publication Date: 1974-May-01
Included in the Prior Art Database: 2005-Feb-27
Document File: 2 page(s) / 34K

Publishing Venue

IBM

Related People

Stalberg, N: AUTHOR

Abstract

Fig. 1 illustrates a bar code carrier which can be scanned independently of the paint pattern thereon. One typical application field is surface treatment processes, for example painting. A code pattern applied in a conventional way, for example by ink printing, will be unreadable after the surface treatment.

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Profiled Bar Code

Fig. 1 illustrates a bar code carrier which can be scanned independently of the paint pattern thereon. One typical application field is surface treatment processes, for example painting. A code pattern applied in a conventional way, for example by ink printing, will be unreadable after the surface treatment.

The code pattern is stamped or embossed in a sheet metal or like material, see Figs. 1z-c. By illumination, the code pattern will become visible as lights and shades, see Fig. 2.

The profile according to Figs. 1a and 2A is of special interest. The code carrier is broken through, thereby preventing the code pattern from being covered during the surface treatment process. In this embodiment, the code pattern can be read independently of whether the surface is reflecting or diffusing. The asymmetry of the profile causes distinction in contrast independently of the angle of incidence of the light. This fact makes the profile code highly usable in different applications. The code carrier also can be illuminated from behind, see Fig. 2B.

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