Light transmissive device for optical testing of transported bil

Details Light transmissive device for optical testing of transported bil Light transmissive device for optical testing of transported bil

1996-10-10

1999-05-11

Kim, Robert

Optics: measuring and testing

Document pattern analysis or verification

250555, G06K9/74

Patent

active

059033398

ABSTRACT:
This optical scanner for testing the validity of a bill transported through a bill validator includes lower and upper members spaced to allow a bill to pass therebetween, at least one member including a light transmissive area. A light emitting element is arranged to direct light through the light transmissive area and a light receiving sensor is arranged to receive light from the light emitting element during passage of bill (B) therebetween. The light transmissive area includes a recessed portion to provide non-contact face portions of the light transmissive area spaced from the bill to preclude the transfer and build-up of dirt and abrasion of these areas.

REFERENCES:
patent: 4451530 (1984-05-01), Kaule et al.
patent: 4452843 (1984-06-01), Kaule et al.
patent: 4723072 (1988-02-01), Naruse
patent: 5034616 (1991-07-01), Berrovitz

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