Method and apparatus for improving image quality
US5997132A · kind A · utility
13Cited by
11References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 22, 1996 |
| Grant date | Dec 7, 1999 |
| Priority date | — |
| Expiry date | Oct 22, 2016 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/2117
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Achromatic Component Addition technique for producing printed ink-jet images of high quality, low granularity, and increased resolution of dithered gradients. Drops of chromatic inks are combined with drops of achromatic ink in any predetermined ratio and in any predetermined order on predetermined areas on a printing medium to produce imaged areas having differing lightness and lower chroma. The technique increases the number of color levels without increasing printer resolution and effectively increases resolution of dithered gradients by requiring fewer addressable pixels to produce the same color transition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.