Optics: measuring and testing – By monitoring of webs or thread – For flaws or imperfections
Patent
1997-02-20
1999-03-23
Kim, Robert
Optics: measuring and testing
By monitoring of webs or thread
For flaws or imperfections
356238, 356431, 2505594, G01N 2184
Patent
active
058867899
ABSTRACT:
A surface testing device, operating by reflection, for linearly moving, tape-like materials, for example paper or polymer films, is suitable for automatic online registration of linear irregularities transverse to the direction of movement. The testing device includes a suitable test distance, at least two optical inspection units and at least one electronic circuit arrangement for detecting both the individual signals of the inspection units and the coincidence signals. In addition, a magnetic information medium wound in the form of a roll on a hub is tested by the surface testing device and carries a machine-readable and/or visually readable quality identification.
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Koller Albrecht
Scholtysik Bernd
EMTEC Magnetics GmbH
Kim Robert
LandOfFree
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