Method and apparatus for single-pass failed nozzle compensation
US9914309B2 · kind B2 · utility
18Cited by
1References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 13, 2014 |
| Grant date | Mar 13, 2018 |
| Priority date | — |
| Expiry date | Jun 13, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/603
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Compensation algorithms are applied to hide failed nozzles or, at least, reduce the objectionable effect of such nozzles in a printed image. Once a failed nozzle or under-performing nozzle is detected in a single-pass printing system, it is shut-off and the image data that was intended to be printed by this nozzle is redistributed to its neighboring nozzles. Embodiments of the invention use of a 1-D look-up table and stochastically distribute the duty cycle to each neighboring nozzle. In this way, failed nozzles are effectively hidden in the final print.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.