CHARACTERIZATION OF PHOTORECEPTOR SENSITIVITY CHANGES DUE TO MATERIALS/MANUFACTURING PROCESSES
Original Publication Date: 1991-Feb-28
Included in the Prior Art Database: 2004-Apr-05
Xerox Disclosure Journal
An approach to improved xerographic copy quality incorporates optical bar codes onto photoreceptor non-image areas. The bar codes contain information pertaining to the electrical and imaging characteristics of the imaging area of the photoreceptor. The information is retrieved by a scanner in the machine from the photoreceptor surface. The information is transmitted to a controller of the copier or printer for use in automatic subsystem set-up, adjustment and print quality optimization. Such an approach may compensate for typical lot-to-lot variations found in photoreceptor materials and manufacturing processes. Machine performance and reliability maybe improved by reducing failures and enhancing the compatibility and interactions between photoreceptor, paper stock, printing hardware and marking materials. A related concept involving bar coding of individual copy sheets has been previously disclosed by Robinson in the Xerox Disclosure Journal, Volume 13, Number 4, page 191, July/August 1988.