Samsung SCX4521F - B/W Laser - All-in-One Service Manual page 31

3.3 Deverope Process
- Developing Method : Non magnetic 1 element contacting method
- Toner : Non magnetic 1 element shatter type toner
- Toner Qty:35gf /60gf (1k/3k)
- The life span of toner 1k/3k sheets (ISO 5% Coverage )
- Toner Residual Sensor : None
- OPC Cleaning : Use the conventional cleaning blade
- Handling of wasted toner : Discard by collecting waste-toner at waste-toner bin.
- OPC Drum Protecting Shutter : None
- Classifying device for toner cartridge: ID is classified by interruption of the frame channel.
- Development Roller type : conductive elastic roller
- Doctor BLADE Type : Regulating toner layer by pressure
- Charge Roller Type : Conductive Roller Contact-Charge
3.3.1 Fuser Specification
1) Heat Lamp
- Heat Lamp Terminal Shape : Terminal Single Type
- Voltage 120 V : 115
- Capacity : 600 Watt
- Light Qty Distribution : 140%
- Life : 3000 Hr
2) Thermostat
- Thermostat Type : Non-Contact type THERMOSTAT
- Control Temperature : 150°C
3) Thermistor
- Thermistor Type : HF-R0060 (SEMITEC 364FL Type)
- Temperature Resistance : 7 k (180 °C)
- SYSTEM Temperature SETTING
Stand by : 165
Printing : 175
Overshoot: 200°C or less
Overheat :210°C or less
4) Safety Relevant Facts
- Protecting device when overheating
1st protecting device : H/W cuts off when detecting an overheating
2st protecting device : S/W cuts off when detecting overheating
3st protecting device : Thermostat cuts off the power
- Safety device
The power of Fuser is cut-off after front cover is open.
The overheating safety device for customer
The surface temperature of the Fuser Cover is under 80°C
Samsung Electronics
5 %, 220 V : 230 5 %
30 W
5°C
5°C
5°C(5 minutes before)
170°C 5°C(5 minutes after)
System Overview
Service Manual
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