Image forming apparatus
US7446794B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 10, 2005 |
| Grant date | Nov 4, 2008 |
| Priority date | — |
| Expiry date | Apr 21, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/506
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The optical path of scanning light E1 reaching the photosensitive drum 82a closest to the installation plane S of a plurality of photosensitive drums 82a, 82b, 82c, and 82d is provided at the photosensitive drum side with respect to the optical path of scanning light E2 deflected and scanned on the same side as the side of polygon mirror 10 for deflecting and scanning the laser beam, from the polygon mirror 10 to folding mirrors 24, 26. The invention presents a technology capable of equalizing the length of optical paths if the regulation of optical unit in height direction is different at both sides of the rotary polyhedral mirror.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.