Color drift error correcting method and image forming apparatus
US7729024B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 4, 2006 |
| Grant date | Jun 1, 2010 |
| Priority date | — |
| Expiry date | Jan 12, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/0161
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A color-drift correcting method in an image forming apparatus includes a first and a second color-drift correcting. The first color-drift correcting includes correcting the color-drift amount in a sub scanning direction and a skew relative to the reference color image being based on each color-drift amount of at least three mark-patterns, each of which mark-pattern is formed each color image, so as to decide a corrected-image line as a virtual image line for each color, assumed when the color images are superposed onto a transfer media. A second color-drift correcting includes correcting the color-drift amount in the sub scanning direction so that the virtual image lines corresponding to each of the colors other than the reference color intersect with the virtual image line of the reference color at at least two points.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.