Predicting depleted printing device colorant from color fading
US10999452B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 25, 2018 |
| Grant date | May 4, 2021 |
| Priority date | — |
| Expiry date | Jan 25, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/605
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Pixel blocks of a user-generated print job raster page are clustered into raster color clusters, and pixel blocks of a corresponding scanned page are clustered into scanned color clusters. For each raster color cluster, if a color difference between the cluster and a corresponding scanned color cluster is greater than a threshold, color fading of the cluster is determined from simulated depletion of each colorant of a printing device, and a likely depleted colorant is determined based on the corresponding scanned color cluster and the determined color fading. A most likely depleted colorant is determined from the likely depleted colorant predicted for each raster color cluster for which the determined color difference is greater than the threshold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.