Light transmissive device for optical testing of transported bills
US5903339A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 10, 1996 |
| Grant date | May 11, 1999 |
| Priority date | — |
| Expiry date | Oct 10, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07D7/121
- WIPO fieldControl
- WIPO sectorInstruments
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.