Tri-level xerographic two-color forms printer with slide attachment
US5030531A · kind A · utility
5Cited by
5References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 4, 1990 |
| Grant date | Jul 9, 1991 |
| Priority date | — |
| Expiry date | Apr 4, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K15/129
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Highlight color imaging apparatus wherein tri-level images are created by using a transparency with optical densities suitable for forming a bi-level image having relatively high and intermediate voltage levels. A modulated light source is then employed to form a third voltage level on the imaging surface by reducing the intermediate voltage level to a relatively low residual voltage level.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.