Method of adjusting head skew of magnetic recording heads

Details Method of adjusting head skew of magnetic recording heads Method of adjusting head skew of magnetic recording heads

1993-10-21

1995-04-11

Hajec, Donald

Dynamic magnetic information storage or retrieval

Recording on or reproducing from an element of diverse utility

Card

235438, G11B 2504, G06K 700

Patent

active

054064228

ABSTRACT:
A method of adjusting alignment of a magnetic head to be within an alignment specification in accordance with the invention includes recording on magnetic material of a test card a digital code having a greater number of bits per unit length than the set number of bits used for conventional magnetic recording of credit cards. The test card produces an electrical playback signal which varies in magnitude with head alignment at a second rate greater than a first rate produced during conventional recording. The test card is read repeatedly and alignment of the head is adjusted until a maximum electrical playback signal is produced indicating that the head is set within the alignment specification.

REFERENCES:
patent: 3949424 (1976-04-01), Jollyman
patent: 4088216 (1978-05-01), LaManna et al.
patent: 4180837 (1979-12-01), Michaud
patent: 4969760 (1990-11-01), LaManna et al.
International Standard ISO 7811/2, 1st Ed. Dec. 15, 1985 pp. 1-8.

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