The paper may have number of dirt specks or contraries. These specks can be any unwanted foreign particle that is visible to the eye such as bark, undigested wood (shives), pitch, rust, plastic, slime etc. For pulp, paper and board the number or area covered by such specks on both surfaces and sometimes in the body of the material, can be estimated in either reflected or transmitted light.
Principle
The number of specks of each area are expressed either as mm2/Kg for pulp or mm2/m2 for paper
Dirt Content (PAPRICAN MICRO-SCANNER)
Construction
VGA and Customized personal Computer (CPU)
Monitor display
Keyboard
Light Control Unit (LCU)
Voltage regulator
Table with strip feeder and transmitted light source
An optical density (OD) filter holder
A Fluorescent ring lamp reflective light source
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