Leak-proof device for powder addition of selenium drum

Abstract

The invention discloses a leak-proof device for powder addition of a selenium drum. The selenium drum is provided with a powder storage bin, wherein a circle of clamping bulge is arranged on an innerwall of the powder storage bin in a surrounding manner; the leak-proof device is detachably propped against the top end of the clamping bulge and comprises a connection pipe, a first powder leaking pipe, a second powder leaking pipe, a blocking assembly and a bracket; a first support net is horizontally clamped into the connection pipe; a second support net is horizontally clamped into the first powder leaking pipe; the second powder leaking pipe communicates with the first powder leaking pipe; the blocking assembly comprises a support column, a limiting plug, a sealing plug and a first springwhich are fixedly connected in sequence from bottom to top; the bracket comprises a pair of L-shaped support rods, a pair of connecting rods and a positioning frame; an inner thread matched with an opening of a carbon powder bottle is arranged in the upper end of the first powder leaking pipe; and the positioning frame is pushed, the edge of the lower end of the second powder leaking pipe is propped against limiting lugs and carbon powder in the carbon powder bottle enters the powder storage bin. The leak-proof device is simple in structure, convenient to use, free of carbon powder leakage and high in powder adding efficiency, pollution-free powder addition is achieved and powder addition can be immediately stopped at any time.

Description

technical field [0001] The invention relates to the technical field of printer toner cartridges. More specifically, the present invention relates to a powder leakage prevention device for toner cartridge filling. Background technique [0002] Because of its fast and high-definition printing quality, laser printers occupy an increasingly important position in daily office printing devices. In laser printers, the toner cartridge, one of the core components, carries the key to the electrostatic latent image in the laser printing process. Task. The toner cartridges used in existing laser printers on the market are mostly disposable and discarded after use, which makes office printing costs higher, and then there are separate toner cartridges that can add toner multiple times. When adding toner, due to The toner powder is very fine, and if it is handled improperly, it is easy to leak out and cause pollution. If the toner powder enters the toner storage bin, if the distribution ...

AI Technical Summary

Problems solved by technology

The toner cartridges used in the existing laser printers on the market are mostly disposable and discarded after use, which makes the cost of office printing higher, and then there are separate toner cartridges that can add toner multiple times. When adding toner, due to The toner powder is very fine, and if it is handled improperly, it is easy to leak out and cause pollution, and if the toner powder enters the toner storage bin, if the distribution is uneven, it will lead to partly clear and partly unclear writing on the printing place, which will affect the printing quality

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