| 摘要 |
PROBLEM TO BE SOLVED: To solve such a problem of a developing device for electrophotographic device that, when toner concentration is low, carrier particles are connected one to another due to magnetic force, because of that a developing magnetic roll is short-circuited to the housing of the developing device via the carrier particles and becomes incapable of maintaining potential applied to the developing magnetic roll at normal level that causes print quality degradation such as a thin print and void. SOLUTION: The developing device for electrophotographic device is provided with a housing that is used for storing toner and carrier and formed from an aluminum alloy the internal surface of which is covered with a fluorine film having a thickness of 30 to 150 μm, to solve the problem. |
