Method for compensating for transfer characteristics of a printing system in a halftone screening process
US5625716A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 15, 1994 |
| Grant date | Apr 29, 1997 |
| Priority date | — |
| Expiry date | Mar 15, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/4051
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of compensating for a predetermined transfer characteristic of a printing device in a halftoning process for screening an image containing a particular gray level value selected from a predetermined finite number of gray level values, including the steps of (1) selecting for the particular gray level value a bit pattern from a large plurality of bit patterns which is larger than the predetermined finite number of gray levels, the selection being based upon the application of a predetermined transfer characteristic of the printing system; and (2) printing the area of the image having the particular selected gray level value using the selected bit pattern, or storing the selected bit pattern as part of a threshold array.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.