Apparatus for removing particles of dust from the surfaces of flat objects
AssigneeAgfa-Gevaert
InventorsErnst Biedermann, Heinz Rapp
Life of this patent
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Abstract
Apparatus for removing dust from the flat surfaces of stationary or moving sheets, webs, plates or similar objects has a unit which converts a low-pressure laminar air stream into a pulsating air stream. The pulsating stream contacts the surface of an object simultaneously with ultrasonic radiation. The direction of flow of the pulsating air stream, which can be ionized, may be parallel with or at right angles to the direction of propagation of ultrasonic radiation.
Claims18
Apparatus for removing particles of dust or similar contaminants from the surface of a substantially flat object, comprising means for generating a pulsating air stream;
- means for contacting the surface of the object with the pulsating air stream;
- and a source of ultrasonic radiation arranged to direct such radiation against the surface of the object while the surface is contacted by the pulsating air stream.
Dependencies are inferred from the claim text.