Apparatus and method for detecting documents having ferrous obje

Details Apparatus and method for detecting documents having ferrous obje Apparatus and method for detecting documents having ferrous obje

1997-12-12

2000-09-05

Nguyen, Tuan N.

Classifying, separating, and assorting solids

Sorting special items, and certain methods and apparatus for...

Condition responsive means controls separating means

209900, 324235, 324243, B07C 500, G01N 2772

Patent

active

061146463

ABSTRACT:
A ferrous object detection circuit for use with automated document processing devices is provided for detecting and sorting documents affixed with ferrous objects such as staples and paper clips. A static magnetic field is positioned to intersect a document path. At least one inductive transducer is positioned relative to the magnetic field to detect changes in the magnetic field resulting from documents traveling along the document path. The movement of ferrous objects through the static magnetic field produces a detection signal in the inductive transducer, identifying the document as having a ferrous object.

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