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Summary of Product 4.2.7 Toner Cartridge The toner cartridge is an integral unit containing the OPC unit and toner unit. The OPC unit consists of the OPC drum and charging roller, and the toner cartridge unit consists of the toner, supply roller, developing roller, and blade (Doctor blade) - Developing Method: Non magnetic 1 element contacting method - Toner: Non magnetic 1 element shatter type toner - The life span of toner: 3,000 sheets (ISO 19752) - Toner remaining amount detecting sensor: Yes - OPC Cleaning: Electrostatic process - Management of waste toner: Collect the toner using a Cleaning Blade - OPC Drum protecting Shutter: Yes - Classifying device for toner cartridge: ID is classified by interruption of the frame channel -430V -950V -580V 4-8 Service Manual Samsung Electronics