Process and system for variable contrast color photographic imaging
OwnerPeter Krauseinventor
Life of this patent
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Abstract
A color photographic imaging process and system uses a photographic film and/or printing paper wherein blue, green and red light is radiated on corresponding yellow, magenta and cyan dyes to obtain an image and the peak transmittances of the blue, green and red light are modulated to vary the resulting contrast of the color image.
Claims14
In a color photographic printing system wherein blue, green and red light of desired relative intensities is radiated on corresponding yellow, magenta and cyan dyes to obtain a color balanced dye image and including means for selecting a desired contrast for the dye image, the improvement wherein the means for selecting a desired contrast for the dye image comprises means for modulating the wavelength range and the wavelength of the peak transmittances of the blue, green and red light while maintaining their relative intensities with respect to the dyes.
In a process for color photographic printing wherein yellow, magenta and cyan dyes are irradiated with blue, green and red light of desired relative intensities to obtain a color balanced dye image and a desired contrast is selected for the dye image, the improvement wherein the step of selecting the contrast comprises modulating the wavelength range and the wavelength to the peak transmittances of the blue, green, and red light while maintaining the relative intensities with respect to the dyes.
Dependencies are inferred from the claim text.