Method and device for measuring the density of color layers of p

Details Method and device for measuring the density of color layers of p Method and device for measuring the density of color layers of p

1983-03-23

1986-03-11

Evans, F. L.

Optics: measuring and testing

By polarized light examination

Of surface reflection

356446, G01N 2147

Patent

active

045752494

ABSTRACT:
A method and device for measuring the density of color layers of printing inks that are still wet is provided in which a polarized light source is directed toward the color layer along an axis of illumination which is inclined at the Brewster angle relative to the surface normal line of the color layer.

REFERENCES:
patent: 3623818 (1971-11-01), Gardner et al.
Reisinger et al., "Alternative to Ellipsometry for Characterizing Transparent Thin Films", Optical Engineering, Jan./Feb. 1981, vol. 20, No. 1, pp. 111-114.

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