Method for compensating for failed printing nozzles in an inkjet printing machine by using deviating nozzles
US10207518B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 26, 2017 |
| Grant date | Feb 19, 2019 |
| Priority date | — |
| Expiry date | Jun 26, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K15/10
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A method for compensating for failed printing nozzles in an inkjet printing machine uses a computer to provide an increased ink drop volume of adjacent nozzles. All existing printing nozzles are measured regarding print failure and deviation of a printed dot beyond a specific threshold, so that the printing nozzles are marked either as functioning, failed, or printing a dot deviating in a direction transverse to the printing direction, and the results are saved on the computer. The computer hides all functioning printing nozzles and marks all remaining isolated printing nozzles as failed nozzles. The computer groups adjacent remaining printing nozzles by marking nozzles printing a dot deviating in a direction transverse to the printing direction as functioning printing nozzles contributing to the compensation or as failed printing nozzles in accordance with a rule, and the computer compensates for all printing nozzles having been marked as failed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.