Magnetic sensor for tray acceptor

Details Magnetic sensor for tray acceptor Magnetic sensor for tray acceptor

1984-02-27

1986-05-06

Trafton, David L.

Registers

Coded record sensors

Particular sensor structure

235475, 360 2, 360104, G06K 708

Patent

active

045874123

ABSTRACT:
A magnetic reading head is provided in a tray acceptor for determining the presence of magnetic characteristics in a paper tendered as a valid currency or note. Fundamentally, the invention comprises a spring assembly, receiving a magnetic reading head, which is adjustable to position the reading head in sensing engagement with the paper maintained in the tray and offered for validation. The magnetic reading head provides a series of pulses corresponding to the presence of magnetic characteristics in the paper to a capacitor which charges upon the receipt of each pulse. When the tray reaches a set position, the charge on the capacitor is sensed, and a determination is made as to whether the paper has sufficient magnetic characteristics to constitute a valid note or currency. A time delay circuit is provided such that the magnetic sensing function can be performed only once during a preset time period.

REFERENCES:
patent: 3509535 (1970-04-01), Bernbe
patent: 3836753 (1974-09-01), Pass
patent: 4358103 (1982-11-01), Koike et al.

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