| 摘要 |
<p>A belt tension mechanism (100, 200, 300) includes a tension roller (80) disposed on a side of a photoconductive belt (54) for pressing the photoconductive belt (54), a first elastic component (102, 202, 302) connected to the tension roller (80) for providing the elastic force to the tension roller (80), and a releasing device (104, 204, 304) disposed on the other side of the photoconductive belt (54). The releasing device (104, 204, 304) includes an actuating component (106, 206, 306) for moving in a first direction and separating from the tension roller (80) when being electrified so that the first elastic component (102, 202, 302) can drive the tension roller (80) to a position where the tension roller (80) can press the photoconductive belt (54), and a second elastic component (108, 208, 308) connected to the actuating component (106, 206, 306) for driving the actuating component (1 06, 206, 306) to a second direction opposite to the first direction when the actuating component (1 06, 206, 306) is not electrified so that the actuating component (106, 206, 306) can drive the tension roller (80) to a position where the tension roller (80) cannot press the photoconductive belt (54).</p> |
