Image forming apparatus with exposure, size, and position correction for pixels
US5438437A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 13, 1992 |
| Grant date | Aug 1, 1995 |
| Priority date | — |
| Expiry date | Oct 13, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/2045
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An electrophotographic color image forming machine registers which a second color toner image on a first color toner image which has been previously formed on an image carrier to form a color image. The registered images are then transferred onto a recording sheet. The machine includes control apparatus that includes first and second exposure control modulators which respectively control an exposure amount of at least one of the first color toner images and the second color toner image. A smoothing processor controls at least one of a size and a position of at least one of the first and second color toner dot images within each of a plurality of pixels and a discriminator determines whether one of the size and the position of the dot image should be controlled. A hue corrector is provided which adjusts a ratio of the exposure amounts provided by the first and second exposure control modulators to control the first and second exposure control modulators on the basis of a discriminator result of the discriminator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.