Error reduction by print masks
US7261388B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 28, 2005 |
| Grant date | Aug 28, 2007 |
| Priority date | — |
| Expiry date | Mar 27, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K2215/0085
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In a method of printing a plurality of pages during a print job, a page-wide-array printing device having redundant dot-forming elements is used. Print masks distribute dot-forming-element activity between the redundant dot-forming elements in a manner taking into account known malfunctions of dot-forming elements to hide such malfunctions, or reduce a visible effect of such malfunctions in the pages printed. The method includes generating a plurality of print masks which are different, as they distribute the dot-forming-element activity in different ways, but are equivalent, since they are based on the same knowledge of dot-forming-element malfunctions; dividing the print job into page-sets of at least one page; and printing the different page-sets of the print job using different equivalent print masks, thereby distributing the dot-forming-element activity in different ways from page-set to page-set.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.