Samsung ML-2851ND - Page 25

Service Manual
Product spec and feature
2-16
Samsung Electronics
2.2.2.6 Print Cartridge
By using the electronic photo process, it creates a visual image. In the print cartridge, the OPC unit and
the toner cartridge unit are in a body. The OPC unit has OPC drum and charging roller, and the toner
cartridge unit has toner, supply roller, developing roller, and blade (Doctor blade)
- Developing Method: Non-contacting method
- Toner : Non magnetic 1 component pulverized type toner
- The life span of toner : 2,000 or 5,000 pages (LSA Pattern/A4 standard)
- Toner remaining amount detecting sensor : Yes
- OPC Cleaning : Cleaning blade type
- Management of disusable toner : Collect the toner by using Cleaning Blade
- OPC Drum protecting Shutter : No
- Classifying device for toner cartridge : ID is classified by CRUM. except for initial cartridge.
Cleaning Roller
Cleaning Blade
-750V
0.32mW
-250V
-1.25KV ~ -1.45KV
V
D = -430V
V
S = -680V
1
2
3
4
5
6
7
8
+4.2kV
-130V
+
-
<Toner Cartridge Layout>