Method and device to improve print quality of gray scales and color for printers
US5801838A · kind A · utility
4Cited by
14References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 20, 1997 |
| Grant date | Sep 1, 1998 |
| Priority date | — |
| Expiry date | May 20, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/4057
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Method to improve the printing quality at reproduction of half-tone originals by means of printers of the type, in which a number of dots are brought together in a cell (pixel). A minimum of two dots form a cell where each dot in the cell is controlled individually with respect to the size and/or the color value. The dots form a pattern in each cell, which is variable with respect to the number of dots, the dot size and/or the dot color value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.