Selenium drum capable of adjusting torque of powder feeding roller

Abstract

A selenium drum capable of adjusting torque of a powder feeding roller relates to the technical field of laser printers and comprises a powder bin, an adjusting support and a powder feeding roller gear set. The two ends of the powder bin are each provided with an adjusting support mounting hole with the radius larger than that of an iron shaft of the powder feeding roller, a pair of chute bayonetswhich are symmetrical about the central axis and parallel to the axis are formed in each hole, and two sunken circular steps coaxial with the mounting holes are arranged on the outer side of each adjusting support mounting hole at the gear end of the powder bin. Each adjusting support is a cylinder containing a circular hole with different circle centers, two buckles are arranged at one end of each adjusting support, the other end of each adjusting support is in a D shape, and an outer ring is arranged on the side, close to the middle of the cylinder, of the D shape. The powder feeding rollergear set is formed in the mode that a powder feeding roller gear is internally meshed with a composite gear formed by an inner gear and an outer gear. As the inner circular holes of the adjusting supports and the outer cylinder are non-concentric, the axis distance between a developing roller and the powder feeding roller can be changed when the adjusting supports is rotated, the purpose of adjusting the torque of the powder feeding roller is achieved, and the product quality is improved.

Description

technical field [0001] A toner cartridge with adjustable torque of a powder feeding roller relates to the technical field of laser printers, in particular to a toner cartridge with adjustable torque of a powder feeding roller. Background technique [0002] The toner of the toner cartridge can be divided into magnetic toner and non-magnetic toner. The transmission methods of the two toners are also different. The magnetic powder uses a magnetic roller to absorb it on the surface of the magnetic roller, while the non-magnetic powder needs to rely on The powder feeding roller supplies the toner to the surface of the developing roller. When the toner drum of non-magnetic toner is running, it must rely on the mutual friction between the developing roller, the powder feeding roller and the toner, so that the toner is charged with enough static electricity. If the friction force is too large, the torque of the toner cartridge will be too large, and the machine cannot drive the tone...

AI Technical Summary

Problems solved by technology

Factors that affect the friction between the developing roller, powder feeding roller, and toner include: the outer diameter of the developing roller and powder feeding roller, the material of the outer sponge of the powder feeding roller, the particle size of the toner, and the gap between the developing roller and the powder feeding roller. It can be seen that the torque of the toner cartridge with non-magnetic toner has many influencing factors and is not easy to control.

Images