Patent ID: 8180266
Filing Date: 2012-05-15
Classification: G03G

Abstract:
1. A method of registering a transfer of an image from a belt to a media substrate associated with a printing device, the printing device including an image transfer belt operatively coupled to one or more primary image transfer devices configured to transfer an image to the image transfer belt, an image transfer point configured to transfer an image from the image transfer belt to the media substrate, an image transfer belt location target fixed to the image transfer belt, a first belt location sensor operatively connected to a controller for timing the transfer of images from the primary image transfer devices to the image transfer belt, a second belt location sensor located downstream of a belt tensioning device and upstream of the image transfer point, the second belt location sensor operatively connected to the controller for timing the transfer of an image from the image transfer belt to the media substrate at the image transfer point, and a master clock operatively connected to the controller for timing the transfer of an image to the image transfer belt and the transfer of an image from the image transfer belt to the media substrate, the method comprising: a) detecting the presence of the belt location target by the first belt location sensor and initiating the counting of master clock counts; b) transferring an image to the image transfer belt from one or more of the primary image transfer devices after a first predetermined number of master clock counts; c) detecting the presence of the belt location target by the second belt location sensor; and d) transferring the image from the image transfer belt to a media substrate after a second predetermined number of master clock counts whereby the second predetermined number of master clock counts corresponds to the time required for the image transfer belt to travel the distance from the second belt location sensor to the image transfer point.