Browse Prior Art Database

Punchable Magnetic Record Card

IP.com Disclosure Number: IPCOM000098798D
Original Publication Date: 1959-Dec-01
Included in the Prior Art Database: 2005-Mar-08
Document File: 2 page(s) / 59K

Publishing Venue

IBM

Related People

Staats, RW: AUTHOR

Abstract

Card 1 (upper drawing) carries a plurality of stripes 2 of magnetic material disposed between rows of punch positions 3, which permits the carrying of permanently punched data as well as erasable and updatable magnetic data. Card handling operations such as sorting and collating can be performed on inexpensive punch card machines; computing and tabulating functions can make use of the increased capacity and updatability of magnetically recorded data. In a payroll operation, a man's name, man number, Social Security number, withholding exemptions and salary are punched, since these items seldom change. Year to date earnings, income taxes and FICA taxes are magnetically recorded, subject to updating each pay period.

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Punchable Magnetic Record Card

Card 1 (upper drawing) carries a plurality of stripes 2 of magnetic material disposed between rows of punch positions 3, which permits the carrying of permanently punched data as well as erasable and updatable magnetic data. Card handling operations such as sorting and collating can be performed on inexpensive punch card machines; computing and tabulating functions can make use of the increased capacity and updatability of magnetically recorded data. In a payroll operation, a man's name, man number, Social Security number, withholding exemptions and salary are punched, since these items seldom change. Year to date earnings, income taxes and FICA taxes are magnetically recorded, subject to updating each pay period.

Mechanical punches and magnetic material are generally mutually destructive. If punches, in operation, should cut through the magnetic material, the abrasive action quickly wears out the punches.

Magnetic punch dust may collect on cards and reading heads to inhibit proper card reading. The magnetic stripes 2 are, therefore, located between rows of punch positions 3 with a clearance of 1/16 of an inch to avoid any contact between punches and magnetic material.

It is generally desirable for the magnetic stripes to have considerable mass. Coating of the stripes 2 is accomplished on card 1 (or card stock) by an intaglio printer 4 (lower drawing), having a platen roller 5 and a grooved intaglio roller 6 which rotates in a dip p...