Magnetic card reader with head stop arrangement

Details Magnetic card reader with head stop arrangement Magnetic card reader with head stop arrangement

1986-03-18

1988-10-11

McElheny, Jr., Donald

Dynamic magnetic information storage or retrieval

Recording on or reproducing from an element of diverse utility

Card

360109, 360137, 340686, 81461, G11B 548, G11B 2116

Patent

active

047775408

ABSTRACT:
A magnetic stripe reader adapted for reading stripes on media of different thicknesses includes a magnetic head with a position which adjusts to the medium thickness. A head stop arrangement permits a simple technique for setting the maximum head position to be used. A special tool is inserted in a bracket fixed to a reader wear plate. A bracket is positioned to mate with a head which is displaced its maximum distance from an opposing rail. A conducting shim is placed between the head and the opposing rail and a current flowing through an electric circuit including the head and the shim is measured by an ohmmeter in the circuit. The bracket rotates about a pin to adjust the position of the head until continuity of the circuit is broken. The bracket then is secured into position.

REFERENCES:
patent: 4259699 (1981-03-01), Yoshida
patent: 4410922 (1983-10-01), Babow et al.
patent: 4589040 (1986-05-01), Kawasi
patent: 4616280 (1986-10-01), Kobayashi et al.
patent: 4628386 (1986-12-01), Chabrolle
patent: 4683507 (1987-07-01), Roberts
patent: 4684794 (1987-08-01), Holland-Letz

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