Halftoning printing with a page-wide-array printer
US8848251B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 30, 2013 |
| Grant date | Sep 30, 2014 |
| Priority date | — |
| Expiry date | Jan 30, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/4052
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A page-wide-array printer has a print unit including an array of print-heads, wherein a printing direction is defined by a relative movement between the print unit and a print medium during a printing process. The page-wide-array printer receives a continuous tone image and divides the continuous tone image into a series of slices along a printing direction. Halftone image data is generated from each of the slices using error diffusion halftoning. The error diffusion halftoning comprises processing, with regard to error diffusion, each slice pixel-by-pixel following a processing pattern mainly oriented along a main processing direction which is parallel to the printing direction. The page-wide-array printer prints the halftone image data along the printing direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.