System and method for inoperative inkjet compensation
US9463638B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 3, 2015 |
| Grant date | Oct 11, 2016 |
| Priority date | — |
| Expiry date | Jun 6, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/4053
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method for operating an imaging device identifies inoperative inkjets in an imaging device and modifies non-image data values in response to the identification of the inoperative inkjets. The method halftones image data for forming an image by generating halftoned image data with reference to modified non-image data values to compensate for identified inoperative inkjets. The method operates inkjets using the generated halftoned image data to form the image. The non-image data values modified in response to identified inoperative inkjets and later referenced while halftoning may include halftone threshold array, per-output raster column “RasterType” or TRC data values.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.