Method and apparatus for increasing number of available printing gradations on an ink jet printer
US6488351B1 · kind B1 · utility
7Cited by
7References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 27, 2001 |
| Grant date | Dec 3, 2002 |
| Priority date | — |
| Expiry date | Aug 27, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/2128
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An ink jet printer apparatus and method of printing wherein image data representing a predetermined number of gray levels of pixels to be printed are accommodated in an inkjet printer for recording on a receiver medium. The printer has the capability of producing fewer numbers of gray levels at respective pixel positions than the data requires. The inkjet printer prints an increased number of the gray levels by applying multitone printing to pixels locations on a reference raster and provides supplementary ink drops to respective adjacent pixel locations on a shifted raster.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.