Abstract

The calculation of the tristimulus specifications of subtractive dye mixtures consists of three parts: the calculation of the spectral density of the mixture, the conversion to the spectral reflectance or transmittance, and the deduction of the tristimulus values and chromaticity coordinates. With a standard IBM 604 electronic calculating punch, three runs are needed and the yield is about 24 to 60 color points an hour, according the desired accuracy. It is shown that with an expanded type, the 604-004, the complete calculation can be performed in one single run. In this way the yield attained is 60 to 150 color points an hour.

© 1958 Optical Society of America

Computation of Trichromatic Coordinate Using the IBM 604 Electronic Calculating Punch

Albert J. Derr
J. Opt. Soc. Am. 45(9) 772-772 (1955)

Colorimetric Analysis of Dye Mixtures*

David L. MacAdam
J. Opt. Soc. Am. 39(1) 22-30 (1949)

Accuracy of Tristimulus Computations*

J. L. F. De Kerf
J. Opt. Soc. Am. 48(5) 334-338 (1958)

Application of Punched Card Equipment to the Analysis of Complex Spectra

J. V. Atanasoff and A. E. Brandt
J. Opt. Soc. Am. 26(2) 83-88 (1936)

Instrument for Selecting Visually Neutral Photographic Dye Images

A. J. Sant and O. E. Miller
J. Opt. Soc. Am. 48(1) 4-8 (1958)