Exposure control system for color printers
US4150894A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 27, 1978 |
| Grant date | Apr 24, 1979 |
| Priority date | — |
| Expiry date | Jan 27, 1998 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B27/735
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An exposure control system for color printers having electro/optical means for spectral analysis of different types of original material for printing to determine different spectral coefficients for each material. Each coefficient is classified according to a reference range of values, each range being associated with a different original material. Photoelectric means are provided to determine the color densities of an original and a store stores sets of exposure parameters, each set being associated with a different original material. Automatic selection means responsive to the classification is provided to select whichever parameter set is associated with a coefficient reference range in which the coefficient has been classified during classification.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.