Exposure control system for color printers

Details Exposure control system for color printers Exposure control system for color printers

1978-01-27

1979-04-24

Hix, L. T.

Photocopying

Projection printing and copying cameras

Multicolor picture

356404, 356443, G03B 2778, G01N 2106, G01N 2122

Patent

active

041508947

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.

REFERENCES:
patent: 3447871 (1969-06-01), Neale
patent: 3482916 (1969-12-01), Mey et al.
patent: 3724947 (1973-04-01), Paulus
patent: 3873201 (1975-03-01), Amano
patent: 3888580 (1975-06-01), Amano et al.

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