Control of magnetic printed sheets

Details Control of magnetic printed sheets Control of magnetic printed sheets

1998-04-16

2000-03-07

Olszewski, Robert P.

Check-actuated control mechanisms

Control mechanism actuated by check, other than coin , which...

By pliant currency

271 181, 271207, 324228, 324239, 324243, G07F 704, B65H 316, B65H 3100, G01N 2772

Patent

active

060327790

ABSTRACT:
Banknotes printed with magnetic ink pass through a tri-color age detector 34, and then between a pair of premagnetization rollers (10,12) having opposite magnetic polarity of such strength that the magnetic signature of all banknotes is enhanced to the same level; the notes are then stacked 50 in an electromagnetic stacker 42. Such notes, having magnetic signatures of the same level, can also be recognized and/or validated by magnetic techniques also.

REFERENCES:
patent: 2341639 (1944-02-01), Mathiesen
patent: 2814398 (1957-11-01), Coleman et al.
patent: 2950799 (1960-08-01), Timms
patent: 3485358 (1969-12-01), Hooker
patent: 4283708 (1981-08-01), Lee
patent: 4958715 (1990-09-01), Suris

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