Patent ID: 8073361
Filing Date: 2011-12-06
Classification: G03G

Abstract:
1. A preset case for keeping therein unused initial fill of developer, the preset case being disposed on top of a developer transportation unit of a developing apparatus, the developing apparatus comprising: a developer container having the developer transportation unit that transports, while mixing, a developer containing a toner and a carrier along an axis of rotation by a rotatable mixing transportation member; and a cover member provided, out of an entire region as seen in a direction of transportation of the developer, in part of the developer transportation unit so as to cover an upper portion of the mixing transportation member, the preset case comprising: a developer feed port provided on that bottom surface of the preset case which lies on a side of the developer container; a sealing member that seals the developer feed port, the sealing member being mounted so as to be removable, when putting the preset case to use, in a longitudinal direction of the mixing transportation member, wherein the developer feed port is provided except for a position that lies opposite to the cover member disposed in the developer transportation unit.