发明授权
US4872418A Magnet roll developing apparatus 失效
磁铁辊显影装置

Magnet roll developing apparatus
摘要:
A magnet roll, comprising a main body portion of a soft material and having a surface portion which is permanently magnetized, and a supporting portion integrally formed with the main body portion by the same soft material as of the main body portion for mounting the main body portion to a member to which the main body is to be mounted.
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