Gray tone generation
US3977007A · kind A · utility
70Cited by
4References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 2, 1975 |
| Grant date | Aug 24, 1976 |
| Priority date | — |
| Expiry date | Jun 2, 1995 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/185
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An ink jet printer in which refined half-tones or shades of gray are produced while retaining high contrast capability using a dot matrix in which the dots are of the same density for the same shading plus or minus one drop of ink at selected dot locations within the matrix but with each dot being printed in response to an individual shading density or darkness input signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.