Real time mottle measuring device and method

Details Real time mottle measuring device and method Real time mottle measuring device and method

1988-12-05

1990-10-30

McGraw, Vincent P.

Optics: measuring and testing

For optical fiber or waveguide inspection

250571, 356369, 356446, G01N 2147, G01N 2157, G01J 400

Patent

active

049664557

ABSTRACT:
Devices and methods for measuring mottle of paper-like materials are provided. the invention includes directing a radiation over a paper-like material and scanning it in a plurality of directions. Radiation scattered by the paper-like material is detected to produce an output. This output is processed to provide a reading proportional to the mottle of the paper-like material. The invention uses electro-optical devices and signal processing to quantify mottle as an appearance property. Gloss measurements of the paper-like material can also be quantified and simultaneously displayed.

REFERENCES:
patent: 2755702 (1956-07-01), Cook
patent: 4213708 (1980-07-01), Lucas
patent: 4831264 (1989-05-01), Fujiwara

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