Image forming apparatus, image processing apparatus and method
US7431210B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 1, 2006 |
| Grant date | Oct 7, 2008 |
| Priority date | — |
| Expiry date | Nov 2, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/40006
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image forming apparatus includes: an image processing section for performing tone correction of an image signal; and an image output section for outputting an image in accordance with an image recording signal output, wherein the image processing section includes: a tone correction processing unit which, in accordance with an input image signal, outputs the image signal having undergone tone correction; a density calculation unit for calculating a density value at a given position in a scanning direction of a test pattern image in accordance with an image signal pertaining to the input test pattern image; and a discrimination unit for discriminating whether or not density inconsistencies having arisen at the given position in the scanning direction can be corrected by the tone correction processing unit, on the basis of the density value calculated by the density calculation unit and a predetermined threshold value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.