Patent ID: 7423738

Claim:
Inspecting system for thin security documents, comprising: a transportation device comprised of a rotating cylinder ( 10 ) provided with transparent sectors ( 10 a , 10 b ) of a size at least equal to a size of a portion of a security document to be inspected; a transparency inspecting device comprised of i) an image acquiring device, ii) an illuminating device ( 3 ), and iii) an electromagnetic inspecting beam arranged between the image acquiring device and the illuminating device; the transportation device comprising elements to transport said security document past the image acquiring device, wherein, said transparency inspecting device is placed partially inside and partially outside the cylinder so that the electromagnetic inspecting beam is intercepted by said security document held lying onto said transparent sectors, said transportation cylinder comprises a gripping system for said security document, said gripping system having a pivoting gripping element ( 11 ) cooperating with at least a radially movable block ( 12 ), and the gripping point of the security document is able to be lowered relative to the nominal rotational diameter thereof so as not to interfere with calibration blades ( 13 ) fixedly placed in proximity of the inspection axis and strictly adjacent to said rotating cylinder.