Single gap magnetic read head

Details Single gap magnetic read head Single gap magnetic read head

1976-06-25

1978-06-27

Tupper, Robert S.

Dynamic magnetic information storage or retrieval

Head

Core

360121, 235449, G11B 516, G06K 700

Patent

active

040979105

ABSTRACT:
Magnetic ink characters on a document 1A are sensed by a single gap magnetic reading head which employs a segmented linear array having adjoining magnetic sensing elements. Each sensing element is a C-shaped laminated core with the reading head comprising an array of contiguously aligned cores where the core gaps are on an axis perpendicular to a document travel path. A pickoff coil encircles the vertical member of one arm of each laminated core and pickoff coils for juxtapositioned sensing elements are staggered on either side of the core gap so that no two coils are immediately adjacent. A chrome over copper plate about the core gaps is employed to improve the read head wear life and narrow the side-view angle of the sensing elements. The resolution and signal to noise ratio of the sensing element responses thereby is improved.

REFERENCES:
patent: 3417386 (1968-12-01), Schneider
patent: 3479662 (1969-11-01), Bradford et al.
patent: 3701858 (1972-10-01), Prival et al.
patent: 3716677 (1973-02-01), Tanaka et al.
patent: 3999286 (1976-12-01), Richardson et al.

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