Browse Prior Art Database

Repetitive Marking of Optical Sense Documents

IP.com Disclosure Number: IPCOM000093801D
Original Publication Date: 1966-Feb-01
Included in the Prior Art Database: 2005-Mar-06
Document File: 2 page(s) / 67K

Publishing Venue

IBM

Related People

Maynard, KB: AUTHOR

Abstract

This is a rotary device for repetitive encoding with positioned marks in an optical sense matrix. Applications are the encoding of IBM tabulating cards with marks rather than punched holes, credit cards coupons, optical test scoring forms, etc.

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Repetitive Marking of Optical Sense Documents

This is a rotary device for repetitive encoding with positioned marks in an optical sense matrix. Applications are the encoding of IBM tabulating cards with marks rather than punched holes, credit cards coupons, optical test scoring forms, etc.

The encoder consists of cylinder 10 mountable in a conventional press numbering tower. Positioned about cylinder 10 are groups of precision ground slots 11 spaced at the intervals required by optical marking standards. For example, the slots can be positioned to print coding either 4 or 5 lines to the inch. Print bars 12 slip into the slots and are both held in place and accurately positioned by central clamping member 13. Each print bar 12 carries one or more raised portions 14. These are precisely positioned relative to clamp 13 so as to print in the predetermined optical sense matrix position. A stock of print bars 12 is supplied with the unit sufficient to enable the operator to set up any possible code without ordering special print bars.

The cylinder 10 construction positively and automatically sets up the desired code positions within the matrix. All that is required is to position cylinder 10 in the correct relationship to the printed form. Print bar height is uniform, thus giving good print quality. Setup time is in the order of five minutes and setup scrap is insignificant. Print bars 12 are interchangeable and expendable. The cost of replacing a worn bar is only the...