Optical: systems and elements – Deflection using a moving element – Using a periodically moving element
Patent
1995-05-10
1996-04-16
Phan, James
Optical: systems and elements
Deflection using a moving element
Using a periodically moving element
359212, 359220, 358493, 347259, 250236, G02B 2608
Patent
active
055088376
ABSTRACT:
An optical scanning system wherein a moving cylinder supporting a segment of recording media on its inner surface is axially moved over a pair of fixed cylinders. A slit is provided between the fixed cylinders, and a light beam is radially scanned by the system through and along the slit to scan the surface of the supported segment of media as the moving cylinder moves in an axial direction over the fixed cylinders and across the slit. A pressure source provides air to the moving cylinder, with the supplied air expelled from an inner surface of the moving cylinder against the fixed cylinders to form an air bearing. Air is also expelled into the area between the fixed and moving cylinders to float the media therein during media advancement. A vacuum source is also provided to draw air through the moving cylinder from the area between the fixed and moving cylinders holding the media against the inner surface of the moving cylinder while the media is being scanned by the light beam.
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Boardman John D.
Gangstead Mervin L.
E-Systems Inc.
Meier Harold E.
Phan James
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