Method for halftone reproduction of continuous tone images
US4081828A · kind A · utility
17Cited by
5References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 15, 1976 |
| Grant date | Mar 28, 1978 |
| Priority date | — |
| Expiry date | Mar 15, 1996 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/40043
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method for halftone reproduction of continuous tone images, in black and white or color, wherein improved tonal density characteristics are achieved, is disclosed. By plotting a first set of dot fields upon a recording medium, such as photographic film, and then plotting successive sets of dot fields upon the same reocording medium with some dots of the successive sets being superimposed upon some of the dots of the first set, an increased number of different tonal densities is made possible.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.