Patent ID: 8837979
Filing Date: 2014-09-16
Classification: G03G

Abstract:
1. An image-forming device comprising: a casing; a developing unit that is mounted in the casing and formed with a developer supply hole and a developer return hole, the developer unit having a developer carrying member carrying a developer, the developer carrying member configured to rotate about a rotational axis; and a developer cartridge that is configured to be detachably mounted in the casing and accommodate the developer, and is formed with a cartridge supply opening and a cartridge return opening, the cartridge supply opening and the developer supply hole configured to communicate with each other when the developer cartridge is mounted in the casing, the cartridge return opening and the developer return hole configured to communicate with each other when the developer cartridge is mounted in the casing, wherein the developer is configured to be conveyed from the developer cartridge to the developing unit through the cartridge supply opening and the developer supply hole, wherein the developer is configured to be conveyed from the developing unit to the developer cartridge through the developer return hole and the cartridge return opening, wherein the developer cartridge has a cartridge auger configured to convey the developer in a direction parallel to the rotational axis towards the cartridge supply opening, the cartridge auger having an axis extending in a direction parallel to the rotational axis.