Image forming apparatus for scanning light beam at non-uniform scan speed and exposing photosensitive member
US10372060B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 8, 2018 |
| Grant date | Aug 6, 2019 |
| Priority date | — |
| Expiry date | May 8, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2201/04768
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image forming apparatus includes: a halftone processing unit configured to perform halftone processing on image data by a dither matrix that includes a plurality of submatrices and decide an exposure region of an image. In at least one of a first dither matrix corresponding to a first section, and a second dither matrix corresponding to a second section adjacent to the first dither matrix in the main scanning direction and corresponding to a second section different from the first section in tone value, at least a size of an exposure region of an image formed by using a first submatrix corresponding to a predetermined tone value in the dither matrix and a size of an exposure region of an image formed by using a second submatrix corresponding to the predetermined tone value are different.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.