Sheet medium detection device and sheet medium processing device
US8910937B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 18, 2011 |
| Grant date | Dec 16, 2014 |
| Priority date | — |
| Expiry date | Nov 18, 2031 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H2801/06
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present invention provides a sheet medium detection device, which comprises a light guide bar (2) provided on one side of a medium conveying passage (4) and provided with a plurality of reflection surfaces (21) arranged with Intervals along a length direction of the light guide bar, wherein each of the reflection surfaces (21) reflects the light within the light guide bar (2) to the other side of the medium conveying passage (4); a plurality of light receivers (31), each of which, being opposite to a reflection surface (21) of the light guide bar, is provided on the other side of the medium conveying passage (4); and a point light source (1) provided at least on one end of the light guide bar along the length direction of the light guide bar, wherein each of the reflection surfaces (21) is provided obliquely to form an obtuse angle relative to the light guide bar (2) on the side where the point light source (1) locates. The present invention also provides a sheet medium processing device which comprises the detection device described above. The sheet medium detection device has a low cost and high adaptability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.