Patent ID: 7907875

Claim:
A developer cartridge comprising: a cartridge cabinet configured to accommodate developer, the cartridge cabinet comprising: a cartridge-side opening that allows communication between an inside of the cartridge cabinet and an outside of the cartridge cabinet; a slope provided at a lower edge of the cartridge-side opening, the slope inclining in a direction crossing a horizontal direction when the cartridge-side opening is oriented in a horizontal direction; an outside cabinet comprising an outer opening that allows communication between an inside of the outside cabinet and an outside of the outside cabinet; and an inside cabinet that is housed in the outside cabinet and is configured to accommodate the developer, the inside cabinet comprising an inside opening that is locatable in a position opposed to the outside opening, wherein the cartridge-side opening includes the outside opening and the inside opening, and wherein the slope is provided at a lower edge of the outside opening in the outside cabinet and at a lower edge of the inside opening in the inside cabinet.