Exposure control process and photographic color copying apparatus
US5036351A · kind A · utility
6Cited by
13References
29Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 28, 1990 |
| Grant date | Jul 30, 1991 |
| Priority date | — |
| Expiry date | Sep 28, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B27/735
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A exposure control process and a photographic color copying apparatus make possible the optimal adaptation of the evaluation of a copy master to the varying spectral sensitivities of different copy materials, without having to change the measuring filters. The measuring light components of each of the basic colors are detected by a wavelength selective detection device in at least two closely adjacent spectral ranges and the resultant measured values combined into prevailing color extract values.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.