Photoelectric measuring head for the contactless scanning of mea

Details Photoelectric measuring head for the contactless scanning of mea Photoelectric measuring head for the contactless scanning of mea

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.

REFERENCES:
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patent: 5126648 (1992-06-01), Jacobs
patent: 5208655 (1993-05-01), Cox et al.

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