Exhaust and particle wastes collecting device for laser etching
US5362941A · kind A · utility
16Cited by
3References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 11, 1992 |
| Grant date | Nov 8, 1994 |
| Priority date | — |
| Expiry date | Jun 11, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B23/505
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The current invention provides an apparatus and method of collecting waste materials produced during laser etching of a floptical medium without blocking access to the medium surface. The invention also improves collection efficiency by applying a uniform low-pressure air around the outer edge of the medium. Because the air pressure is applied around the edge, there is no necessity to coordinate a movement or timing of the current invention with respect to the laser etching unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.