Image forming apparatus and method of adjusting color shift
US7777767B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 1, 2006 |
| Grant date | Aug 17, 2010 |
| Priority date | — |
| Expiry date | May 4, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/0161
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An image forming apparatus includes an image forming unit that forms a color image in which a plurality of color component images are superimposed; and a formation controlling unit that allows the image forming unit to form images for adjustment of formation positions of the respective color component images. The formation controlling unit allows the image forming unit to form, for each color, a plurality of adjustment images having different tilts with respect to a main scanning direction. A shift of a detected position of each adjustment image from a reference position in which each adjustment image should be formed is calculated, a tilt and an intercept of a regression line that uses the reference positions and the calculated shifts as variables are calculated, and a shift in the main scanning direction and a shift in a sub-scanning direction are determined based on the calculated tilt and intercept.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.