Dot percentage measuring device

Details Dot percentage measuring device Dot percentage measuring device

1980-09-23

1983-02-01

Arnold, Bruce Y.

Optics: measuring and testing

For light transmission or absorption

G01N 2101

Patent

active

043712657

ABSTRACT:
In printing with dots, a dot percentage is one of the important factors which determine the quality of a printed matter, and accordingly it is essential to control the dot percentage throughout the printing process from makeup to printing. In order to readily and quickly measure the dot percentage with high accuracy, a microscope section and a display section are formed as one unit, and a correction circuit for light transmittance is provided.

REFERENCES:
patent: 3053181 (1962-09-01), Jorgensen
patent: 3375751 (1968-04-01), Engborg et al.
patent: 3393602 (1968-07-01), Stouffer
patent: 4029958 (1977-06-01), Wright

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