Charging roll used for laser printing machine and its manufacturing method
A technology of laser printers and charging rollers, applied in the direction of circuits, applications, electrical components, etc., can solve problems such as degradation and softening of the silicone rubber conductive elastic layer, and achieve good bite, clear images, and moderate elasticity.
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[0030] Such as figure 1 The shown charging roller for a laser printer includes a metal core 1, an adhesive layer 5 on the outer peripheral surface of the metal core 1 bonded with a low-hardness conductive silicone rubber elastic layer 2, and the low-hardness conductive silicone rubber The adhesive layer 5 on the outer peripheral surface of the elastic layer 2 adheres the conductive fluorine paint protective layer 4 .
[0031] The low-hardness conductive silicone rubber elastic layer: select 100 parts by weight of silicone rubber with a molecular weight of 500,000-600,000, reinforce with 15 parts by weight of white carbon black, use 0.6-0.8 parts by weight of 2,5-dimethyl 2, 5 bis(tert-butyl peroxy) hexane crosslinking, kneading into rubber compound; 100 parts by weight of rubber compound, plus 8-9 parts by weight of conductive carbon black, 6-10 parts by weight of graphite Refined into a low-hardness conductive silicone rubber elastic layer material, the resistance value is c...
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