Method of printing digital images
US11044383B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 1, 2018 |
| Grant date | Jun 22, 2021 |
| Priority date | — |
| Expiry date | Aug 1, 2038 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/2054
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of printing using a print head comprising first and second print arrays, each comprising a plurality of nozzles. Each of the first print array nozzles emits a droplet of a first volume and each of the second print array nozzles emits a droplet of a second volume, wherein the first volume is less than the second volume. The method comprises: a. receiving image data comprising a received tone value for a pixel; b. selecting one of the print arrays corresponding to the pixel location; c. mapping the received tone value to a mapped tone value using a tone mapping for the selected print array; d. comparing the mapped tone value with a threshold value for the location of the pixel; and e. generating a control signal for the selected print array if the mapped tone value corresponds to the threshold value in a predetermined manner.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.