TN880 series innovative structure toner cartridge

The utility model discloses a TN880 series carbon powder box with an innovative structure, which has the advantages that the qualification rate is improved, the production cost is reduced and the assembly is reduced. The toner cartridge comprises a toner cartridge body, the toner cartridge body comprises a toner bin, the two ends of the toner cartridge body are provided with a conductive end support and a gear end support respectively, the upper ends of the conductive end support and the gear end support are both provided with developing roller installation groove holes, a developing roller is installed between the two developing roller installation groove holes, and the developing roller is arranged in the toner bin. The lower end of the developing roller is provided with a powder outlet knife located at a powder outlet of the powder bin, and the outer side of the gear end support is provided with an integrated fixed limiting gear protecting cover connected with one end of the developing roller. The integrat