Edge detection apparatus and method
US6850264B2 · kind B2 · utility
1Cited by
3References
22Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 28, 2003 |
| Grant date | Feb 1, 2005 |
| Priority date | — |
| Expiry date | Jan 28, 2023 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J11/0095
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An edge detection apparatus for detecting an edge on a surface. The apparatus comprises a source of coherent radiation for generating a radiation beam and directing the beam onto the surface. A radiation detector is located so as to detect radiation diffusely reflected, but not specularly reflected, from the surface. A system is provided for causing relative scanning movement between the radiation beam and the surface. A monitor is coupled to the detector for monitoring the intensity of the detected radiation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.