LIGHT PIPE EDGE ERASE FOR USE WITH LASER SCANNING SYSTEMS
Original Publication Date: 1990-Aug-31
Included in the Prior Art Database: 2004-Apr-05
Xerox Disclosure Journal
Very high precision, very high copy quality laser scanning systems may require scan line lengths which are less than the process width to be cost effective. These systems will also require an edge erase device. The function of the edge erase device is to reduce the charge on the photoreceptor to the background level. Very high copy quality systems may have low development latitudes. In these cases the exposure and alignment of the edge erase device must be precisely adjusted. Exposure adjustments is required to avoid toner or bead development. Alignment is required to "stitch" the ROS and edge erase devices exposures such that there is limited overlap and no void. Overlap can cause bead development. A void will cause toner development. Toner development will contaminate the process with dirt. Bead development will damage the photoreceptor and cleaner, and deplete developer from the sump.