Method for color and black and white reproduction and formulation used therewith
US4879267A · kind A · utility
0Cited by
1References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 14, 1987 |
| Grant date | Nov 7, 1989 |
| Priority date | — |
| Expiry date | Dec 14, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03F3/02
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A more efficient and versatile method for color and halftone reproduction of artwork utilizing a colorless formulation that can be incorporated into art materials. When a mildly acidic spray is applied to the artwork which contains the formulation, the formulation turns blue. The blue color allows reproduction of red and yellow in certain photographic systems and can also be used in halftone reproduction to preserve light colors during the exposure step to eliminate dots from the background areas.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.