| 摘要 |
<p>Aspects of the invention can include an internal heating system for an image transfer drum that can include a box having a plurality of sides, an open side facing the drum (14) and a heater element (100,200,400,500). The box can have small gaps between it and the internal drum surface to maximize thermal efficiency of the internal heating system. The heater element can include first and second support structures (201,202) that are disposed on a central support structure, the first support structure having an end connector (208) at one side away from the second support structure. Further, a first coil (203b) can be formed around the first support structure, and a second coil (203a) can be formed around the second support structure and one end of the second coil can be coupled by an electrical line that extends within the central support structure through the second support structure towards the end connector. The heater element can alternatively include a support structure, an electrical wire wound in a coil around the support structure and electrical terminals extending away from the support structure connected to the coil by a fastener (507). The heater system can also include at least two circuits, two channels and a relay switch, with the relay switch (606) operating to switch the circuits into a series or parallel electrical configuration.</p> |
