Method of manufacturing rotary scale, rotary scale, rotary encoder, driving apparatus, image pickup apparatus and robot apparatus
US10094684B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 3, 2015 |
| Grant date | Oct 9, 2018 |
| Priority date | — |
| Expiry date | Aug 29, 2036 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S901/47
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of manufacturing a rotary scale to be fixed to a rotating shaft of a rotating member includes a first step of forming, on a scale substrate, a scale pattern and a mark indicating an outer shape of the rotating shaft positioned such that a center axis of the rotating shaft coincides with a center axis of the scale pattern, a second step of cutting a first area of the scale substrate including the mark and having a first width, and a third step of cutting a second area including the mark that remains after the cutting of the first area, having a length in a circumferential direction of the scale substrate shorter than that in the first area and having a second width narrower than the first width.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.