Developer roller and developing device

显影辊及显影装置

Abstract

Disclosed are a developer roller and a developing device. The developer roller is abutted on a photosensitive drum via uniform crimping force in the length direction and comprises a hollow roller body, an elastic layer and flanges, wherein the elastic layer is coated on the circumference of the roller body, the flanges are jointed with the ends of the roller body and provided with abutting surfaces abutted upon the photosensitive drum, the length from the axis of the developer roller to the surface of the elastic layer is L1, the axis of the developer roller to the abutting surface of each flange is L2, and the length from the axis of the developer roller to the circumference of the roller body is L3, and the L1, the L2 and the L3 meet the relation: L1>L2>L3.
一种显影辊及显影装置。使显影辊在长度方向上以均匀的压接力与感光鼓抵接。本实用新型的显影辊,包括:中空的辊主体;弹性层,包覆所述辊主体的圆周面;以及凸缘,与辊主体的端部嵌合,具有用于与感光鼓抵接的抵接面,设显影辊的轴心至弹性层的表面为止的长度为L1,显影辊的轴心至凸缘的抵接面为止的长度为L2,显影辊的轴心至辊主体的圆周面为止的长度为L3时,L1>L2>L3。

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