Browse Prior Art Database

Magnetic Card Source Recorder

IP.com Disclosure Number: IPCOM000072886D
Original Publication Date: 1970-Oct-01
Included in the Prior Art Database: 2005-Feb-22
Document File: 2 page(s) / 32K

Publishing Venue

IBM

Related People

Hunt, RE: AUTHOR [+2]

Abstract

Problems associated with passive transfer from a higher coercivity material to a lower coercivity material to effect character by character printing are that intimate contact between the two members is difficult to achieve and the character by character printing often results in noise being recorded on the record member.

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Magnetic Card Source Recorder

Problems associated with passive transfer from a higher coercivity material to a lower coercivity material to effect character by character printing are that intimate contact between the two members is difficult to achieve and the character by character printing often results in noise being recorded on the record member.

A magnetic slug for printing onto a magnetic record is shown. The magnetic slug is of a rubber bonded ferrite material preferably of the barium ferrite type. When depressed, the resilient slug acts as a head pad to provide intimate contact between the slug and the member on which the magnetic printing is to be done. On each extremity of the character slug is an erase area, and these erase areas, as shown, overlap as the characters are sequentially printed on the magnetic media. The edges of the erase area are skewed at an angle with respect to the data bits. This skewing prevents reading by the magnetic head which is positioned to read the data bits. Thus, the erase area of character n+l erases the edge of the erase area recorded by character n and records its own erase bit at an angle skewed with respect to the data bit of both characters n and n+1.

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