Patent ID: 7801469
Filing Date: 2010-09-21
Classification: G03G

Abstract:
1. A toner cartridge comprising: a toner storing container of a rectangular shape having a toner feeding opening in an angular portion thereof; and a stirring conveying member that is rotatably disposed inside the toner storing container in a predetermined rotation direction and that stirs and conveys toner toward the toner feeding opening in the toner storing container, wherein compression ratio defined by the following equation (1) of the toner stored in the toner storing container is 0.25 to 0.38, (Provided that in the equation (1), P represents a packed bulk density of toner and A represents an aerated bulk density of toner), wherein the stirring conveying member has an insertion portion insertable to the toner feeding opening at the tip side of the stirring conveying portion and a sliding portion that is disposed adjacent to the insertion portion, the sliding portion having a length from the rotation center longer than the insertion portion and sliding on the inside wall of the toner storing container.