Image scanning apparatus
US6175666A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 18, 1997 |
| Grant date | Jan 16, 2001 |
| Priority date | — |
| Expiry date | Dec 18, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/121
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
There is provided an image scanning apparatus which can restrict unevenness in rotation of a transmission, and can substantially make constant a sub-scanning interval so as to prevent lowering of an image quality. In the case where a movement rate of sub-scanning is set with use of a stepping motor 16, an integer rotation of a first gear 12 is controlled so as to be set as one step of sub-scanning movement. Further, in the case where a transmission means is composed of a plurality of gears (first gear 12, second gear 14), the plurality of gears have the number of teeth which is set so that when one (the second gear 14) of gears meshing with each other makes one rotation, the other (the first gear 12) thereof makes an integer rotation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.