Optics: measuring and testing – Of light reflection
Patent
1994-12-22
1996-12-24
Gonzalez, Frank
Optics: measuring and testing
Of light reflection
356425, G01N 2155, G01J 346
Patent
active
055877966
ABSTRACT:
A photoelectric measuring head for the contactless scanning of measurement regions, particularly of measurement fields on a printing sheet resting flat. The measuring head having outlet orifices for compressed air on its underside to generated an air cushion between the measuring head and the printing sheet. A measuring head of this kind, suspended on an air cushion provides for high stability, and the least possible distance from the base. This is achieved in that the outlet orifice for the compressed air are formed from a plate which, by virtue of a microporous structure, is air-permeable.
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Rakitsch Peter
Zehentbauer Hans
Eisenberg Jason D.
Gonzalez Frank
MAN Roland Druckmaschinen AG
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