Fuser Operation; Fuser Roller; Thermistor Assembly; Pressure Roller - Panasonic DP-8020E Service Manual

6.4.3.

Fuser Operation

The paper passes through the Fuser Roller and is subjected to heat and pressure in the Fuser Unit.
Pressure between the Fuser Roller and Pressure Roller fuses or bonds the toner into the paper.
Separators

Pressure Roller

Fuser Roller

A Teflon coated roller supplies heat for bonding the toner to the paper. The temperature of the surface is
kept constant at approximately 180°C (± 10°C) or 356°F. (Approximately 190°C (± 10°C) or 374°F for
DP-8020 only.)
Fuser Lamp
Located in the Fuser Roller is the Fuser Lamp that serve as the heat source for the Fuser Roller.

Thermistor Assembly

A heat sensitive resistor, in contact with the Fuser Roller, monitors the surface temperature and keeps
the temperature at the specified level by controlling the Fuser .
Thermostat and Thermal Fuse
The Thermostat and the Thermal Fuse are installed in the Fuser Roller, providing an extra overheat
protection.
Printer Motor
The Main Motor provides the driving force to the Fuser Roller through the Fuser Roller Gears.
Pressure Roller
This converted PFA tube Silicon Sponge Roller applies pressure to the Fuser Roller, assisting in bonding
the toner to the paper.
When the Fuser Unit does not reach the specified temperature within a certain period of time, an Error code
is shown on the display, stopping the operation.
When the Thermistor Assembly is disconnected or the surface temperature of the Fuser Roller is out of
limit, an Error code is shown on the display, stopping the operation.
Ver. 1.0
Fuser Lamp
315
DP-8020E/8020P/8016P
Recording Paper
Exit Roller
Fuser Roller
Thermistor Assembly
Thermostat
Thermal Fuse
SEP 2006