Adhesion amount inspection method and paper dust adhering amount inspection apparatus of paper dust

摘要

PROBLEM TO BE SOLVED: To provide a paper dust adhesion amount inspection method and a paper dust adhesion amount inspection device capable of precisely inspecting adhesion amount of paper dust adhered as particles on cut-planes of a flat paper of a lamination item including plural flat papers.;SOLUTION: The paper dust adhesion amount inspection device takes images of flat paper cut-planes 1a-1d using imaging apparatuses 10-13 while illuminating flat paper cut-planes 1a-1d of a lamination item 1 with illumination light 24 and calculates an average brightness of the flat paper cut-planes from the images obtained by the imaging apparatuses 10-13. The paper dust adhesion amount inspection device detects a low brightness area where the brightness value is higher than the average brightness and the average brightness value is smaller than a preset threshold value and high brightness pixels neighboring at the light source-side of the illumination light from the images obtained by the imaging apparatuses. An area of paper dust adhered on the flat paper cut-plane is calculated based on the number of the detected high brightness pixels. The adhesion amount of the paper dust is inspected by comparing a value obtained by dividing the calculation value of the adhesion area by an area of the flat paper cut-plane 1a-1d with a reference value.;COPYRIGHT: (C)2014,JPO&INPIT