The machine's fixing system is an on-demand type, and its fixing assembly consists of the fixing film unit: the fixing film has a built-in fixing heater, thermistor,

and thermal fuse.

Its rollers are driven by the main motor (M1).

When print paper carrying a toner image arrives in the fixing assembly, the machine uses the heat from the fixing heater and the pressure from the pressure roller

to permanently fuse the toner with the fibers of the print paper before it moves out of the fixing assembly.

Once outside the fixing assembly, the print paper is delivered to the delivery tray by the work of the face-down delivery roller upon detection by the delivery sensor

(PS803).

6.2 Various Control Mechanisms

6.2.1 Controlling the Temperature of the Fixing Unit

6.2.1.1 Heater Temperature Control

The heater temperature control mechanism consists in monitoring the surface temperature of the fixing heater and controlling the fixing heater drive signal so that

the temperature of the fixing heater is identical to the target temperature.

[2]

[1]

[1] Fixing film unit

[2] Pressure roller

[3] Face-down delivery roller

[3]

PS803

F-6-1

T-6-1

[PS803] Delivery sensor

[M1] Main motor