Detector

Details Detector Detector

2006-10-31

2006-10-31

Paik, Steven S. (Department: 2876)

Registers

Systems controlled by data bearing records

Banking systems

C271S256000

Reexamination Certificate

active

07128259

ABSTRACT:
A detector (10) for detecting an object (42) in a media item (40), such as a check or banknote is described. The detector (10) comprises first electrically conducting means (14), such as a roller, disposed on one side of a media path (32); second electrically conducting means (16), such as another roller, disposed on an opposing side of the media path (32); insulating means (30a,b) for electrically insulating the first and second conducting means (14,16); and impedance measuring means (38) for measuring the impedance between the first and second electrically conducting means (14,16). By measuring the impedance between the conducting means (14,16) it is possible to determine if an electrically conducting object (42) is being carried by a media item (40).

REFERENCES:
patent: 4639666 (1987-01-01), Strosser et al.
patent: 5087027 (1992-02-01), Acquaviva
patent: 5480083 (1996-01-01), Achelpohl
patent: 5798650 (1998-08-01), Guth
patent: 1 232 987 (1971-05-01), None
patent: 1 313 992 (1973-04-01), None
patent: 2 034 898 (1980-06-01), None
patent: 2 248 301 (1992-04-01), None
Japanese Appln. No. 63-37639, Feb. 22, 1988, laid open as No. 1-213,671A, Aug. 28, 1989, to H. Yushimo (Ricoh Co. Ltd.).

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