The fusing unit of the previous machine [A] and fusing unit of this machine [B] are basically the same but with some minor differences.
- The configuration of the heating roller [1] has changed (described below).
- The composition of the surface of the hot roller [2] has been modified.
- The web cleaning unit [3] features a simpler design that makes it much easier to service the unit. The new dis-assembly procedure is described in detail in the Replacement and Adjustment section.
Heating roller
The configuration of the heating roller has changed.
- The heating roller of the previous machine [A] has four fusing lamps [1].
- The heating roller of this machine [B] has three fusing lamps [2].
- The diameter of the heating roller of this machine was increased slightly in order to accommodate the addition of four heat pipes [3] set around the inner surface of the hollow roller. This comprises a closed condenser system that keeps the heat evenly spread over the surface of the heating roller.
Pressure roller lift motor
The pressure roller lift motor, a stepper motor [A] in the previous machine, is replaced by a DC motor [B] in this machine.
Pressure roller lift motor coupling
The shape of the coupling [A] of the previous machine has been changed slightly [B] to accommodate the replacement of the stepper motor with a DC motor.
Fusing Cleaning Unit
The fusing cleaning unit is much easier to service. The web roller supply roller [A] and contact roller [B] can be removed independent of one another.