| 摘要 |
PROBLEM TO BE SOLVED: To prevent a splashed developer from being stuck to the bottom part of a developer housing part by providing the developer housing part with a sheet-like low resistance part which is hard to be electrified by low resistance at the bottom part opposed to a holding means for detachably holding another developing unit. SOLUTION: A toner housing part 21BG is provided with a bottom part opposed to a holding means for detachably holding another developing unit. Then, a low-resistance cover sheet 21BR being a low resistance member is stuck to the bottom surface of the bottom part. The sheet 21BR is constituted of a super high molecular polyethylene sheet material whose surface resistance is <=106 Ω. Since the resistance of the sheet 21BR is low, the surface thereof is not remarkably electrified. Besides, since the sheet 21BR is constituted of the sheet material such as the super high molecular polyethylene sheet material whose friction coefficient is low, the surface thereof is excellent in slidability. By these two characteristics, color toner suspending in a printer main body can be prevented from being stuck. |
