Paper Cooling
The fusing heat pipe roller [A] cools the paper ejected from the fusing unit. The fusing heat pipe roller [A] has a fin [B] at one end. The fusing heat pipe cooling fan [C] cools the fin in order to cool the entire pipe.
The heat improves the heat transfer efficiency.
The heat pipe is a sealed pipe made of metal. It is filled with a small amount of water as the working fluid. When one side of the heat pipe is heated while the other side is cooled, the working fluid at the heating side evaporates. The evaporated working fluid turns into steam and it moves to the cooling side at high speed. When the steam makes contact with the inner wall of the heat pipe at the cooling side, the steam condenses. The condensed fluid moves to the heating side by capillary action. The machine efficiently transfers the heat by repeating this cycle (The working fluid evaporates -> The steam moves to the cooling side -> The steam condenses).
Fusing Heat Pipe Guide Plate
When a paper jam occurs and the paper remains between the fusing heat pipe roller [A] and the fusing heat pipe guide plate [B], the fusing heat pipe guide plate [B] can be lifted by pulling out the paper as shown below, so that the paper is not caught by the fusing heat pipe guide plate and the jammed paper can be easily removed. This mechanism prevents the jammed paper from tearing into pieces.
Straight Through Output (Face-up Output)
With straight through output, paper from the fusing unit passes under the fusing heat pipe roller [A]. When the inverter junction gate motor [C] drives counterclockwise for a certain time, the inverter junction gate [B] is pushed down and the paper is sent to the exit roller [D]. This roller transfers the paper to the downstream device, under the control of the exit motor.
Inverter Output (Face-down Output)
With inverter output (face-down output), the paper that is passed under the fusing heat pipe roller is sent to the inverter exit path with the inverter junction gate [A]. The inverter junction gate motor keeps driving clockwise for a certain time, and then stops.
The leading edge of the paper reaches the exit inverter roller, then the duplex inverter entrance motor [B] starts and transports the paper to the inverter section. After the trailing edge of the paper is ejected from the fusing heat pipe roller, the machine speeds up the duplex inverter entrance motor [B] and the exit inverter motor [C] .
When the inverter exit sensor [A] detects the trailing edge of the paper, the exit inverter motor [B] rotates in reverse and transports the paper to the exit section (inverter transport). In the exit section, the paper exit motor [C] drives the paper exit roller [D] and the inverter exit roller [E] to eject the paper.