Browse Prior Art Database

Marking of Optically Readable Cards

IP.com Disclosure Number: IPCOM000080520D
Original Publication Date: 1974-Jan-01
Included in the Prior Art Database: 2005-Feb-27
Document File: 2 page(s) / 33K

Publishing Venue

IBM

Related People

Blythe, TJ: AUTHOR

Abstract

Optically readable marks on card 1 are printed by pressing plunger 2 against moving ink ribbon 3 (shown transparent in the illustration). Ribbon 3 is forced through aperture 4 in thin steel strip 5 to contact card 1. The speed of travel of ribbon 3 and the duration of impression of plunger 2 determine mark intensity on card 1.

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Marking of Optically Readable Cards

Optically readable marks on card 1 are printed by pressing plunger 2 against moving ink ribbon 3 (shown transparent in the illustration). Ribbon 3 is forced through aperture 4 in thin steel strip 5 to contact card 1. The speed of travel of ribbon 3 and the duration of impression of plunger 2 determine mark intensity on card 1.

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