Write head for a MICR reader having an adjustable field profile

Details Write head for a MICR reader having an adjustable field profile Write head for a MICR reader having an adjustable field profile

1993-09-24

1995-05-09

Moore, David K.

Image analysis

Image sensing

Magnetic

382135, 235450, 360119, 335298, G06K 708, G11B 523, H01F 300

Patent

active

054147832

ABSTRACT:
A write head magnetizes magnetic-ink characters for a MICR system. A magnetic assembly defines a first pole in a first location and an opposite pole in a second location. A first pole piece and a second pole piece, spaced by a gap therebetween, are provided, the first pole piece disposed adjacent the first location and adapted to conduct a magnetic field from the first pole to the gap. A selectably positionable member is disposed between the second location and the second pole piece, the positionable member being adapted to affect a magnetic field from the second location through the second pole piece to the gap, thereby facilitating selectable alteration of a magnetic field profile across the gap.

REFERENCES:
patent: 2850581 (1958-09-01), Gratian
patent: 3417356 (1968-12-01), Tschopp
patent: 3546398 (1970-12-01), French
patent: 3890582 (1975-06-01), Jeong
patent: 4423451 (1983-12-01), Chi
patent: 4804879 (1989-02-01), Fukumoto
patent: 4922086 (1990-05-01), Milford
patent: 5345207 (1994-09-01), Gebele

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