| 摘要 |
PURPOSE:To obtain excellent stirring efficiency by regulating the height of a developer to the height of a stirring member. CONSTITUTION:Excellent stirring efficiency is obtained when 0.8XH>h>0.2XH, where H is the height from the bottom part 1a of a casing 1 to the upper end of the stirring member 2 and (h) is the height from the bottom part 1a of the casing 1 to the developer. Even when the shape of the stirring member 2 is diversified, the stirring efficiency is improved by satisfying the relation between the height H of the stirring member 2 and the height (h) of the developer top surface. |
