| 摘要 |
PURPOSE:To prevent the toner from unnecessarily leaking out by attaching the toner box to the case of the developing device in freely attachable and detachable, and linking the opening-closing of a first shutter for shutting the the toner discharge port in the toner box with a second shutter for shutting the toner entry port in the agitation room. CONSTITUTION:The second shutter 43 is attached to the arm 48 rotatably provided to the boss part 49 on the outer periphery of the supporting groove 46 of a pair of left and right brackets 28 in the case 27, while the first shutter 41 is disposed on the lever 55 turning around the supporting shaft 47 of the toner box 26. When the lever 55 is turned in the state of inserting the supporting shaft 47 in the supporting groove 46, the engaging protrusion 60 disposed on the lever 55 is positioned in the insertion groove 51 on the arm 48 side, thus the arm 48 is turned, therefore the first shutter 41 and the second shutter 43 are turned to be opened and closed in the state of overlapping with each other. |
