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reflection density

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reflection density [ri′flek·shən ‚den·səd·ē]
(optics)
The common logarithm of the ratio of the luminance of a nonabsorbing perfect diffuser to that of the surface under consideration, when both are illuminated at an angle of 45° to the normal and the direction of measurement is perpendicular to the surface.


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56 on Printing Inks, ASTM D 7305, "Test Method for Reflection Density of Printed Matter," is designed to help achieve consistent color reproduction of printed color on flat surfaces.
Values in brackets are density units (D) as measured on the processed film, closest to gray card reflection density of 0.
56 on Printing Inks is working on a number of revisions and also new methods for the emulsification assessment of lithographic inks and for measuring reflection density of printed matter.
 
 
 
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