Samsung CLP-770ND - Fuser Unit Components and Function

Product spec and feature
Service Manual
2-28
Samsung Electronics
2.4.9 Fuser Unit
This unit consists of Heat Roller, a Thermostat, and Thermistors, etc. It melts and fuses the toner, transferred
by the transfer roller onto the paper, by applying pressure and high temperature to complete printing job.
- Fusing Type : [Dual Lamp Heating, 800W/500W]
- Heat Roller : Pipe Type (Lamp Inside)
- Pressure Roller
- Thermistor – Temperature Detecting Sensor
contact thermistor 2EA
- Thermostat – Overheat Protection Device
1. Thermostat
When a heat lamp is overheated, a Thermostat cuts off the main power to prevent over-heating.
- Non-Contact type Thermostat
2. Fuser Belt
The fuser belt transfers the heat from the lamp to apply a heat on the paper.
The surface of the fuser belt is coated with Teon, so toner does not stick to the surface.
3. Pressure roller
A pressure roller mounted under a Fuser roller is made of a silicon resin, and the surface also is coated with
Teon. When a paper passes between a Fuser roller and a pressure roller, toner adheres to the surface of a
paper permanently.