Device for detecting thickness of sheet-type medium and method thereof
US9683840B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 1, 2013 |
| Grant date | Jun 20, 2017 |
| Priority date | — |
| Expiry date | Oct 11, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01B2210/42
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and a device for continuously detecting thickness of a sheet-type medium in a continuous conveying process can achieve a more accurate and stable detected thickness value. The device for detecting thickness of a sheet-type medium comprises a conveying roller; a detection roller, the detection roller being arranged opposite to the conveying roller, and an elastic displacement existing between the detection roller and the conveying roller; a plate spring, arranged by pressing opposite to the other side of the detection roller relative to the conveying roller; a sensor, arranged above the plate spring; and a thickness calculation unit, calculating a thickness value of the sheet-type medium according to a distance detection value and a standard zero value; and further comprises a zero value correction unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.