Optical scanner and image forming apparatus
US7532227B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 1, 2003 |
| Grant date | May 12, 2009 |
| Priority date | — |
| Expiry date | Jul 1, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2201/04793
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An optical scanner is capable of effectively correcting a difference with respect to the sub-scanning direction between the positions of optical spots for scanning photoconductor drums of a tandem type color image forming apparatus. The optical scanner includes an optical axis adjusting part. The optical axis adjusting part uses a deflecting mirror or a wedge-shaped prism to deflect the optical axis of an optical beam with respect to the sub-scanning direction. As a result, it is possible to accurately correct a resist difference among individual image forming stations and form a high-quality color image without any color displacement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.