Optical scanning method, optical scanner and image forming apparatus
US7593028B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 31, 2005 |
| Grant date | Sep 22, 2009 |
| Priority date | — |
| Expiry date | Jan 12, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2201/04791
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An optical scanner can write a full-color image without occurrence of writing position differences even if a record density is switched. The optical scanner includes a black writing illuminant for optically writing an image at a plurality of record densities and a color writing illuminant for optically writing the image at a predetermined record density. The optical scanner adjusts a resist position for a full-color image with respect to the main and sub-scanning directions by switching a writing position of the black writing illuminant in accordance with a requested record density and then writes the full-color image at that writing position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.