| 摘要 |
Method and device for determining the effective volume of the roughness (10) per unit surface area (V) of an object (5), comprising the following steps: - exactly filling, flush with its edge, the roughness (10) belonging to the predetermined surface area (S) of the object (5), with an ink (12) having known characteristics, - recovering, in a container (40), the ink cells belonging only to the predetermined surface (S), by washing with a colourless diluent, - continuing the dilution of the ink recovered by adding colourless diluent up to a predetermined volume (B) in the container (40), - measuring the absorption of the diluted ink with a colorimeter, making it possible to calculate the concentration of colorant in the diluted ink, and then the volume of the roughness per unit surface area (V) of the cylinder. <IMAGE>
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