Patent ID: 8086146
Filing Date: 2011-12-27
Classification: G03G

Abstract:
1. A developer container containing a two-component developer including a carrier and toner, the developer container comprising: a developer containing portion configured to include a plurality of surfaces and to accommodate the two-component developer, the developer containing portion including a plurality of previously formed folds along which the developer container portion can be folded, and at least one reinforcing member on at least one exterior surface of the developer container portion; and a cap configured to communicate to a suction pump so that the two-component developer is sucked by the suction pump and is conveyed to a developing unit, wherein: the developer containing portion is configured to include an internal space of which at least 12% is an air space measured after the two-component developer is packed in the developer containing portion and left still for at least 24 hours, and wherein: the two-component developer in the developer containing portion is electrically charged to have an amount of toner charge in a range from approximately −20 mC/g to approximately −30 mC/g.