Patent ID: 6189879
Filing Date: 2001-02-20
Classification: B65H,G01B

Abstract:
An apparatus for measuring the thickness of flat products comprising:a first and a second roller, the first roller being arranged against the second roller to form a nip therebetween for receiving flat product, wherein the first roller is deflectable when a flat product enters the nip;a first reflecting element arranged on the first roller for reflecting incident light;a light source for directing light to said first reflecting element;a first sensor element for sensing light reflected from said first reflecting element and for producing a first sensor signal; andan evaluating unit coupled to said first sensor element for calculating the thickness based on said first sensor signal, wherein the first and second rollers and said first sensor element are mounted on a movable transporting device, and said light source and said evaluating unit are arranged stationary, apart from said movable transporting device.