Color imaging process and apparatus
US5051341A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 20, 1989 |
| Grant date | Sep 24, 1991 |
| Priority date | — |
| Expiry date | Oct 20, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C7/3041
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
There is described a process for recording a positive or negative continuous tone color copy having the same or lower contrast than a continuous tone original image, comprising the steps of: PA0 providing a photographic element comprising a support having thereon a silver halide emulsion unit capable of forming a yellow image, a silver halide emulsion unit capable of formign a cyan image, and a silver halide emulsion unit capable of forming a magnenta image, each image-forming unit having a maximum spectral sensitivity at a different wavelength of radiation, and at least one of the image-forming units having a gamma as described herein, PA0 receiving image data representing the densities of the yellow, magenta, and cyan records of the original image, PA0 modifying said image data and using it to control three exposure sources, each emitting radiation in the region of maximum spectral sensitivity for a corresponding one of the image-forming units, so that, after exposure, the recorded image density range for at least one of the yellow, magenta, and cyan image-forming units is substantially the same as or lower than the image density range for the corresponding yellow, magenta, and c…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.