Patent ID: 7526229
Filing Date: 2009-04-28
Classification: G03G

Abstract:
1. A belt tension mechanism comprising: a tension roller disposed on the inside of a photoconductive belt for pressing the photoconductive belt so as to provide tension to the photoconductive belt; a first elastic component connected to the tension roller for providing elastic force to the tension roller so that the tension roller adapted for tensioning the photoconductive belt; and a releasing device disposed on the outside of the photoconductive belt, the releasing device comprising: an actuating component for moving in a first direction and separating from the tension roller when the actuating component is electrified so that the first elastic component drives the tension roller to a position where the tension roller provides tension to the photoconductive belt; and a second elastic component connected to the actuating component for driving the actuating component to a second direction opposite to the first direction when the actuating component is not electrified so that the actuating component drives the tension roller to a position where the tension roller does not provide tension to the photoconductive belt.