▎ 摘　　要

NOVELTY - The utility model claims a new one of a kind of improved structure of charging roller, comprising roller shaft, foaming sponge layer electric conduction, electric conduction nylon sleeve, the roller shaft out surrounding set with electric conduction sponge foaming, the foaming sponge layer except around electric conduction electric conduction set with nylon sleeve, the nylon tube outside surface electric conduction around uniformly provided with graphene. This new utility model because of evenly distributed at electric conduction nylon tube outside surface with graphene, graphene uniform surface charge can make each power supply power evenly, make print out image depth is consistent.