AIR DEFLECTOR SLIT AND STRAY LIGHT ABSORBER IN A RASTER OUTPUT SCANNER
Original Publication Date: 1988-Oct-31
Included in the Prior Art Database: 2004-Apr-04
Xerox Disclosure Journal
Referring to the drawing Figure, the polygon of a raster output scanner rotates at a very high RPM, i.e., 22,000 RPM. At that speed, the polygon acts as a blower impeller, blowing air through the laser opening in the polygon housing 1 toward the scanner optical system and lens 5. As a result, contaminates borne by the air can deposit on the lens.