Optical inspection method for determining machinability
US4320567A · kind A · utility
0Cited by
7References
3Claims
0Family size
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Key dates
| Filing date | Jun 30, 1980 |
| Grant date | Mar 23, 1982 |
| Priority date | — |
| Expiry date | Jun 30, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49769
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
In a method for determining the machinability of a metal substrate for use in an electromechanical recording apparatus a surface of a foundation is coated with a layer of metal. The metal layer is machined such that the metalized surface of the foundation is substantially flat and smooth. After the machining step, the metal surface is inspected for depressions with a microscope using a differential interference contrast technique. The number of depressions observed is indicative of the machinability of the coated foundation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.