PHOTORECEPTOR BELTS PROGRAMMED WITH DEFECT LOCATIONS
Original Publication Date: 1997-Dec-31
Included in the Prior Art Database: 2004-Apr-08
Xerox Disclosure Journal
A photoreceptor web is scanned with a vision system during the coating process to map the location of defects which might impact its performance in a xerographic printer or copier. Rather than discard sections of the photoreceptor web where these defects are minimal, the defect information can be encoded optically or magnetically on the edge of the photoreceptor in a final step of the web coating process. Alternatively, the information can be downloaded to an electronic device such as a ROM chip which is later inserted into the photoreceptor housing. Software in the printer or copier would compare the image to be printed with the defect map. Such software would dynamically control the position of the photoreceptor belt to assure that the defects are located in non-printing areas. For defects which lead to deletions or the absence of toner, it would be a relatively simple task to assure that they fall between lines of text. Dark spots can be registered within characters or solid areas.