Additive color printing method and apparatus
AssigneeDe luxe General, Incorporated
InventorsRobert Paul Gyori, Thomas Tullio
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Abstract
Illumination for printing, including that reflected from a color negative, is sensed as to spectral content by a plurality of light-responsive sensors of mutually-exclusive spectral characteristics. That response is employed to control the spectral characteristic of the illumination for printing, as may be desired. The illumination for printing is homogeneously integrated as to intensity and spectral content prior to impinging upon the color negative by a hollow housing having both specularly and non-specularly reflective surfaces.
Claims12
The method of additive color printing which includes the steps of;
- a. illuminating the color negative to be printed with integrated light of a preselected spectral character that is adjustable,
- b. separately accepting plural portions of said light according to mutually-exclusive spectral characteristics with the particular said color negative to be printed in place, and including light reflected only therefrom,
- c. reintegrating the combined light, and
- d. automatically adjusting the spectral characteristic of the light illuminating said color negative according to each said mutually-exclusive spectral portion to retain the preselected color printing spectral characteristic.
Light-emissive apparatus, comprising:
- a. a hollow housing (1) having a translucent transparency-receiving surface (7) and plural light sources (3, 4, 5, 6) of different spectral characteristics spaced from said surface,
- b. a specularly reflective surface (8, 9, 10, 11) within said housing adjacent to said translucent surface,
- c. a non-specularly reflective surface (14, 15, 16, 17, 18) within said housing adjacent to said light sources,
- d. plural light-responsive means (27, 28, 29) positioned adjacent to said translucent transparency-receiving surface, and
- e. control means (33) connected to said plural light-responsive means and to said plural light source for the respective individual control of the output of said plural light sources of different spectral characteristics.
Dependencies are inferred from the claim text.