Original Publication Date: 1979-Aug-31
Included in the Prior Art Database: 2004-Apr-02
Xerox Disclosure Journal
A light aperture 6 is supported for rotation by friction journals 7 in close proximity to xerographic photoreceptor drum 8. Knob 9 permits manual adjustment of the rotational position of aperture 6 and hence the amount of light reaching photo-receptor drum 8.