HARMONIC OSCILLATING PHOTODIODES
Original Publication Date: 1983-Apr-30
Included in the Prior Art Database: 2004-Apr-04
Xerox Disclosure Journal
Frequently, in an electrophotographic printing machine, light emitting diodes are employed either in conjunction with fiber optics or independently, to illuminate selected areas of the photoconductive surface. In order to completely illuminate the desired area of the photoconductive surface, the light rays emitted from the light emitting diodes must overlap one another. Thus, a sufficient number of light emitting diodes must be employed to insure that a continuous light pattern is formed on the photoconductive surface. In order to reduce the number of light emitting diodes, the support housing the. diodes may be oscillated in a direction substantially normal to the path of movement of the photoconductive member. In this way, a smaller number of diodes may be employed in order to achieve the same light pattern.