Patent ID: 8005378

Claim:
A method for controlling a print engine in a printing system, the method comprising: translating a photoreceptor structure along a process direction in the printing system, the photoreceptor structure having first and second lateral edges generally parallel to the process direction and a first side extending between the first and second lateral edges; creating a plurality of images on the first side of the photoreceptor structure, each image being located within a corresponding predefined customer image area of the photoreceptor first side with successive customer image areas being separated from one another along the process direction by an inter-document zone, where the customer image areas have a first lateral boundary laterally inward of the first photoreceptor edge and defining a first edge zone of the first side with a first portion laterally outside the customer image area between the first lateral boundary and the first photoreceptor edge and a second portion extending laterally outwardly of the first lateral boundary through the inter-document zone, and wherein the customer image areas have a second lateral boundary laterally inward of the second photoreceptor edge and defining a second edge zone with a first portion laterally outside the customer image area between the second lateral boundary and the second photoreceptor edge and a second portion extending laterally outwardly of the second lateral boundary through the inter-document zone; creating a plurality of process control patch images entirely within the second portion of the first edge zone of the photoreceptor without creating any process control patch images within the first portion of the first edge zone; creating another process control patch image within the second edge zone of the photoreceptor; and sensing the control patch images within the first and second edge zones of the photoreceptor to generate measured control patch feedback information; and controlling the creation of the plurality of images in closed-loop fashion at least partially according to the measured control patch feedback information.