Conductive foaming tube and preparation method

Abstract

The invention relates to the field of electro-static latent image and discloses a conductive foaming tube and its preparation method. The foaming tube is prepared from a material A and a material B. the weight ratio (by part) of the material A to the material B is 100:5-7. The material A is ethylene propylene rubber mixed with conductive carbon black. The weight ratio (by part) of conductive carbon black to ethylene propylene rubber is 30-40:100. The material B is a foaming agent mixed with a vulcanizing agent. The weight ratio (by part) of the vulcanizing agent to the foaming agent is 11-20:100. The conductive foaming tube provided by the invention can be used along with a plastic film, can completely replace a present printer charging roll, has very strict requirements on resistance, and has very appropriate elasticity and foaming aperture. The size of the conductive foaming tube is controlled appropriately, and can meet requirements of the charging roll. In addition, the conductive foaming tube has advantages of no pollution, high efficiency and low cost, and can be recovered and reutilized.

Description

technical field [0001] The invention relates to the technical field of electrostatic latent images, in particular to a conductive foam tube suitable for the fields of printers, copiers and facsimile machines and a preparation method thereof. Background technique [0002] Charging rollers are widely used in the fields of printers, copiers, and fax machines. Printers, copiers, and fax machines charge and expose the photosensitive drum through the charging roller to form an electrostatic latent image, and then transfer the toner to the electrostatic latent image on the photosensitive drum through the developing roller. , the toner latent image is transferred to the paper for heating and setting to form the final printed text image. The existing charging roller generally includes a metal shaft and a foam tube sleeved on the outside of the metal shaft. The extruded foam tubes currently made in China are all low-end, relatively cheap and non-conductive rubber tubes. The main func...

AI Technical Summary

Problems solved by technology

The extruded foam tubes currently made in China are some low-end, relatively cheap and non-conductive rubber tubes. The main function is to be used as thermal insulation materials, and they cannot be used for the electrical conductivity of the charging roller of the printer.

[0003] At present, the general sponge is not conductive, there is no requirement for the resistance value, it is only a simple insulation sponge or a sealing strip

Its manufacturing process and materials are relatively simple, and some materials have poor elasticity, which is prone to blooming and pollution during use, and has no resistance value, so it cannot be used for electrical conduction

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