| 摘要 |
PURPOSE:To stably form a toner layer on a developer carrier for a long time by projecting and attaching a soft elastic body, which is placed on a pressing and contacting part between a supporting body having a specific spring plate and the developer carrier from the tip part of the supporting body to a toner amount regulating member. CONSTITUTION:The toner amount regulating member 7 consists of the supporting body 7a having the spring plate with >= 15kg f/mm<2> tensile strength and >= 10kg f/mm<2> bearing force, and the soft elastic body 7b placed on the pressing and contacting part between the supporting body 7a and the developer carrier 6 on the supporting body. In addition, the soft elastic body 7b is projected from the tip of the supporting body 7a to be attached. Thus, contact pressure of the toner amount regulating member 7 to the developer carrier 6 can be decreased drastically; moreover, the tip of the soft elastic member 7b is uniformly pressed in the axis direction and the peripheral direction on the developer carrier even when the toner amount regulating member 7 comes into contact with the developer carrier 6 with low pressure. Therefore, an image of a uniform and stable toner amount can be formed on the developer carrier. |
